ExternalVendorCode/whisper.cpp
1
0
Fork 0
mirror of https://github.com/ggerganov/whisper.cpp.git synced 2024-12-19 20:57:52 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

talk-llama : sync llama.cpp

Browse Source
This commit is contained in:
Georgi Gerganov 2024-09-24 13:22:55 +03:00
parent 234f9bd320
commit fe18c29ab8
14 changed files with 4319 additions and 1214 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Makefile
View File

@ -1080,10 +1080,12 @@ lsp: examples/lsp/lsp.cpp \
$(CXX) $(CXXFLAGS) $(CFLAGS_SDL) -c $< -o $(call GET_OBJ_FILE, $<)
$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS) $(LDFLAGS_SDL)
talk: examples/talk/talk.cpp examples/talk/gpt-2.cpp \
$(OBJ_GGML) $(OBJ_WHISPER) $(OBJ_COMMON) $(OBJ_SDL)
$(CXX) $(CXXFLAGS) $(CFLAGS_SDL) -c $< -o $(call GET_OBJ_FILE, $<)
$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS) $(LDFLAGS_SDL)
# TODO: disabled until update
# https://github.com/ggerganov/whisper.cpp/issues/1818
#talk: examples/talk/talk.cpp examples/talk/gpt-2.cpp \
# $(OBJ_GGML) $(OBJ_WHISPER) $(OBJ_COMMON) $(OBJ_SDL)
# $(CXX) $(CXXFLAGS) $(CFLAGS_SDL) -c $< -o $(call GET_OBJ_FILE, $<)
# $(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS) $(LDFLAGS_SDL)
talk-llama: examples/talk-llama/talk-llama.cpp examples/talk-llama/llama.cpp examples/talk-llama/llama-vocab.cpp examples/talk-llama/llama-grammar.cpp examples/talk-llama/llama-sampling.cpp examples/talk-llama/unicode.cpp examples/talk-llama/unicode-data.cpp \
$(OBJ_GGML) $(OBJ_WHISPER) $(OBJ_COMMON) $(OBJ_SDL)

6
examples/CMakeLists.txt
View File

@ -127,8 +127,10 @@ endif (WHISPER_SDL2)
add_subdirectory(quantize)
set_target_properties(quantize PROPERTIES FOLDER "examples")
if (WHISPER_SDL2)
add_subdirectory(talk)
set_target_properties(talk PROPERTIES FOLDER "examples")
# TODO: disabled until update
# https://github.com/ggerganov/whisper.cpp/issues/1818
#add_subdirectory(talk)
#set_target_properties(talk PROPERTIES FOLDER "examples")
add_subdirectory(talk-llama)
set_target_properties(talk-llama PROPERTIES FOLDER "examples")
add_subdirectory(lsp)

861
examples/talk-llama/llama-grammar.cpp
View File

@ -3,11 +3,31 @@
#include "llama-vocab.h"
#include "llama-sampling.h"
#include <cmath>
#include <algorithm>
#include <stdexcept>
// Decodes a UTF-8 string which may end in an incomplete sequence. Adds a terminating 0 for use as
// pointer. If an invalid sequence is encountered, returns `llama_partial_utf8.n_remain == -1`.
std::pair<std::vector<uint32_t>, llama_partial_utf8> decode_utf8(
//
// helpers
//
// NOTE: assumes valid utf8 (but checks for overrun)
static std::pair<uint32_t, const char *> decode_utf8(const char * src) {
static const int lookup[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 4 };
uint8_t first_byte = static_cast<uint8_t>(*src);
uint8_t highbits = first_byte >> 4;
int len = lookup[highbits];
uint8_t mask = (1 << (8 - len)) - 1;
uint32_t value = first_byte & mask;
const char * end = src + len; // may overrun!
const char * pos = src + 1;
for ( ; pos < end && *pos; pos++) {
value = (value << 6) + (static_cast<uint8_t>(*pos) & 0x3F);
}
return std::make_pair(value, pos);
}
static std::pair<std::vector<uint32_t>, llama_partial_utf8> decode_utf8(
const std::string & src,
llama_partial_utf8 partial_start) {
static const int lookup[] = { 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 3, 4 };
@ -40,7 +60,7 @@ std::pair<std::vector<uint32_t>, llama_partial_utf8> decode_utf8(
while (*pos != 0) {
uint8_t first_byte = static_cast<uint8_t>(*pos);
uint8_t highbits = first_byte >> 4;
n_remain = lookup[highbits] - 1;
n_remain = lookup[highbits] - 1;
if (n_remain < 0) {
// invalid sequence, abort
@ -50,7 +70,7 @@ std::pair<std::vector<uint32_t>, llama_partial_utf8> decode_utf8(
}
uint8_t mask = (1 << (7 - n_remain)) - 1;
value = first_byte & mask;
value = first_byte & mask;
++pos;
while (*pos != 0 && n_remain > 0) {
@ -67,12 +87,510 @@ std::pair<std::vector<uint32_t>, llama_partial_utf8> decode_utf8(
return std::make_pair(std::move(code_points), llama_partial_utf8{ value, n_remain });
}
const llama_grammar_rules & llama_grammar_get_rules(const struct llama_grammar * grammar) {
return grammar->rules;
static bool is_digit_char(char c) {
return '0' <= c && c <= '9';
}
llama_grammar_stacks & llama_grammar_get_stacks(struct llama_grammar * grammar) {
return grammar->stacks;
static bool is_word_char(char c) {
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '-' || is_digit_char(c);
}
static std::pair<uint32_t, const char *> parse_hex(const char * src, int size) {
const char * pos = src;
const char * end = src + size;
uint32_t value = 0;
for ( ; pos < end && *pos; pos++) {
value <<= 4;
char c = *pos;
if ('a' <= c && c <= 'f') {
value += c - 'a' + 10;
} else if ('A' <= c && c <= 'F') {
value += c - 'A' + 10;
} else if ('0' <= c && c <= '9') {
value += c - '0';
} else {
break;
}
}
if (pos != end) {
throw std::runtime_error("expecting " + std::to_string(size) + " hex chars at " + src);
}
return std::make_pair(value, pos);
}
static const char * parse_space(const char * src, bool newline_ok) {
const char * pos = src;
while (*pos == ' ' || *pos == '\t' || *pos == '#' ||
(newline_ok && (*pos == '\r' || *pos == '\n'))) {
if (*pos == '#') {
while (*pos && *pos != '\r' && *pos != '\n') {
pos++;
}
} else {
pos++;
}
}
return pos;
}
static const char * parse_name(const char * src) {
const char * pos = src;
while (is_word_char(*pos)) {
pos++;
}
if (pos == src) {
throw std::runtime_error(std::string("expecting name at ") + src);
}
return pos;
}
static const char * parse_int(const char * src) {
const char * pos = src;
while (is_digit_char(*pos)) {
pos++;
}
if (pos == src) {
throw std::runtime_error(std::string("expecting integer at ") + src);
}
return pos;
}
static std::pair<uint32_t, const char *> parse_char(const char * src) {
if (*src == '\\') {
switch (src[1]) {
case 'x': return parse_hex(src + 2, 2);
case 'u': return parse_hex(src + 2, 4);
case 'U': return parse_hex(src + 2, 8);
case 't': return std::make_pair('\t', src + 2);
case 'r': return std::make_pair('\r', src + 2);
case 'n': return std::make_pair('\n', src + 2);
case '\\':
case '"':
case '[':
case ']':
return std::make_pair(src[1], src + 2);
default:
throw std::runtime_error(std::string("unknown escape at ") + src);
}
} else if (*src) {
return decode_utf8(src);
}
throw std::runtime_error("unexpected end of input");
}
static void print_grammar_char(FILE * file, uint32_t c) {
if (0x20 <= c && c <= 0x7f) {
fprintf(file, "%c", static_cast<char>(c));
} else {
// cop out of encoding UTF-8
fprintf(file, "<U+%04X>", c);
}
}
static bool is_char_element(llama_grammar_element elem) {
switch (elem.type) {
case LLAMA_GRETYPE_CHAR: return true;
case LLAMA_GRETYPE_CHAR_NOT: return true;
case LLAMA_GRETYPE_CHAR_ALT: return true;
case LLAMA_GRETYPE_CHAR_RNG_UPPER: return true;
case LLAMA_GRETYPE_CHAR_ANY: return true;
default: return false;
}
}
static void print_rule_binary(FILE * file, const llama_grammar_rule & rule) {
for (auto elem : rule) {
switch (elem.type) {
case LLAMA_GRETYPE_END: fprintf(file, "END"); break;
case LLAMA_GRETYPE_ALT: fprintf(file, "ALT"); break;
case LLAMA_GRETYPE_RULE_REF: fprintf(file, "RULE_REF"); break;
case LLAMA_GRETYPE_CHAR: fprintf(file, "CHAR"); break;
case LLAMA_GRETYPE_CHAR_NOT: fprintf(file, "CHAR_NOT"); break;
case LLAMA_GRETYPE_CHAR_RNG_UPPER: fprintf(file, "CHAR_RNG_UPPER"); break;
case LLAMA_GRETYPE_CHAR_ALT: fprintf(file, "CHAR_ALT"); break;
case LLAMA_GRETYPE_CHAR_ANY: fprintf(file, "CHAR_ANY"); break;
}
switch (elem.type) {
case LLAMA_GRETYPE_END:
case LLAMA_GRETYPE_ALT:
case LLAMA_GRETYPE_RULE_REF:
fprintf(file, "(%u) ", elem.value);
break;
case LLAMA_GRETYPE_CHAR:
case LLAMA_GRETYPE_CHAR_NOT:
case LLAMA_GRETYPE_CHAR_RNG_UPPER:
case LLAMA_GRETYPE_CHAR_ALT:
case LLAMA_GRETYPE_CHAR_ANY:
fprintf(file, "(\"");
print_grammar_char(file, elem.value);
fprintf(file, "\") ");
break;
}
}
fprintf(file, "\n");
}
static void print_rule(
FILE * file,
uint32_t rule_id,
const llama_grammar_rule & rule,
const std::map<uint32_t, std::string> & symbol_id_names) {
if (rule.empty() || rule.back().type != LLAMA_GRETYPE_END) {
throw std::runtime_error(
"malformed rule, does not end with LLAMA_GRETYPE_END: " + std::to_string(rule_id));
}
fprintf(file, "%s ::= ", symbol_id_names.at(rule_id).c_str());
for (size_t i = 0, end = rule.size() - 1; i < end; i++) {
llama_grammar_element elem = rule[i];
switch (elem.type) {
case LLAMA_GRETYPE_END:
throw std::runtime_error(
"unexpected end of rule: " + std::to_string(rule_id) + "," +
std::to_string(i));
case LLAMA_GRETYPE_ALT:
fprintf(file, "| ");
break;
case LLAMA_GRETYPE_RULE_REF:
fprintf(file, "%s ", symbol_id_names.at(elem.value).c_str());
break;
case LLAMA_GRETYPE_CHAR:
fprintf(file, "[");
print_grammar_char(file, elem.value);
break;
case LLAMA_GRETYPE_CHAR_NOT:
fprintf(file, "[^");
print_grammar_char(file, elem.value);
break;
case LLAMA_GRETYPE_CHAR_RNG_UPPER:
if (i == 0 || !is_char_element(rule[i - 1])) {
throw std::runtime_error(
"LLAMA_GRETYPE_CHAR_RNG_UPPER without preceding char: " +
std::to_string(rule_id) + "," + std::to_string(i));
}
fprintf(file, "-");
print_grammar_char(file, elem.value);
break;
case LLAMA_GRETYPE_CHAR_ALT:
if (i == 0 || !is_char_element(rule[i - 1])) {
throw std::runtime_error(
"LLAMA_GRETYPE_CHAR_ALT without preceding char: " +
std::to_string(rule_id) + "," + std::to_string(i));
}
print_grammar_char(file, elem.value);
break;
case LLAMA_GRETYPE_CHAR_ANY:
fprintf(file, ".");
break;
}
if (is_char_element(elem)) {
switch (rule[i + 1].type) {
case LLAMA_GRETYPE_CHAR_ALT:
case LLAMA_GRETYPE_CHAR_RNG_UPPER:
case LLAMA_GRETYPE_CHAR_ANY:
break;
default:
fprintf(file, "] ");
}
}
}
fprintf(file, "\n");
}
//
// implementation
//
uint32_t llama_grammar_parser::get_symbol_id(const char * src, size_t len) {
uint32_t next_id = static_cast<uint32_t>(symbol_ids.size());
auto result = symbol_ids.emplace(std::string(src, len), next_id);
return result.first->second;
}
uint32_t llama_grammar_parser::generate_symbol_id(const std::string & base_name) {
uint32_t next_id = static_cast<uint32_t>(symbol_ids.size());
symbol_ids[base_name + '_' + std::to_string(next_id)] = next_id;
return next_id;
}
void llama_grammar_parser::add_rule(uint32_t rule_id, const llama_grammar_rule & rule) {
if (rules.size() <= rule_id) {
rules.resize(rule_id + 1);
}
rules[rule_id] = rule;
}
const char * llama_grammar_parser::parse_alternates(
const char * src,
const std::string & rule_name,
uint32_t rule_id,
bool is_nested) {
llama_grammar_rule rule;
const char * pos = parse_sequence(src, rule_name, rule, is_nested);
while (*pos == '|') {
rule.push_back({LLAMA_GRETYPE_ALT, 0});
pos = parse_space(pos + 1, true);
pos = parse_sequence(pos, rule_name, rule, is_nested);
}
rule.push_back({LLAMA_GRETYPE_END, 0});
add_rule(rule_id, rule);
return pos;
}
const char * llama_grammar_parser::parse_sequence(
const char * src,
const std::string & rule_name,
llama_grammar_rule & rule,
bool is_nested) {
size_t last_sym_start = rule.size();
const char * pos = src;
auto handle_repetitions = [&](int min_times, int max_times) {
if (last_sym_start == rule.size()) {
throw std::runtime_error(std::string("expecting preceding item to */+/?/{ at ") + pos);
}
// apply transformation to previous symbol (last_sym_start to end) according to
// the following rewrite rules:
// S{m,n} --> S S S (m times) S'(n-m)
// S'(x) ::= S S'(x-1) |
// (... n-m definitions of these S' rules ...)
// S'(1) ::= S |
// S{m,} --> S S S (m times) S'
// S' ::= S S' |
// S* --> S{0,}
// --> S' ::= S S' |
// S+ --> S{1,}
// --> S S'
// S' ::= S S' |
// S? --> S{0,1}
// --> S'
// S' ::= S |
llama_grammar_rule prev_rule(rule.begin() + last_sym_start, rule.end());
if (min_times == 0) {
rule.resize(last_sym_start);
} else {
// Repeat the previous elements (min_times - 1) times
for (int i = 1; i < min_times; i++) {
rule.insert(rule.end(), prev_rule.begin(), prev_rule.end());
}
}
uint32_t last_rec_rule_id = 0;
auto n_opt = max_times < 0 ? 1 : max_times - min_times;
llama_grammar_rule rec_rule(prev_rule);
for (int i = 0; i < n_opt; i++) {
rec_rule.resize(prev_rule.size());
uint32_t rec_rule_id = generate_symbol_id( rule_name);
if (i > 0 || max_times < 0) {
rec_rule.push_back({LLAMA_GRETYPE_RULE_REF, max_times < 0 ? rec_rule_id : last_rec_rule_id});
}
rec_rule.push_back({LLAMA_GRETYPE_ALT, 0});
rec_rule.push_back({LLAMA_GRETYPE_END, 0});
add_rule( rec_rule_id, rec_rule);
last_rec_rule_id = rec_rule_id;
}
if (n_opt > 0) {
rule.push_back({LLAMA_GRETYPE_RULE_REF, last_rec_rule_id});
}
};
while (*pos) {
if (*pos == '"') { // literal string
pos++;
last_sym_start = rule.size();
while (*pos != '"') {
if (!*pos) {
throw std::runtime_error("unexpected end of input");
}
auto char_pair = parse_char(pos);
pos = char_pair.second;
rule.push_back({LLAMA_GRETYPE_CHAR, char_pair.first});
}
pos = parse_space(pos + 1, is_nested);
} else if (*pos == '[') { // char range(s)
pos++;
enum llama_gretype start_type = LLAMA_GRETYPE_CHAR;
if (*pos == '^') {
pos++;
start_type = LLAMA_GRETYPE_CHAR_NOT;
}
last_sym_start = rule.size();
while (*pos != ']') {
if (!*pos) {
throw std::runtime_error("unexpected end of input");
}
auto char_pair = parse_char(pos);
pos = char_pair.second;
enum llama_gretype type = last_sym_start < rule.size()
? LLAMA_GRETYPE_CHAR_ALT
: start_type;
rule.push_back({type, char_pair.first});
if (pos[0] == '-' && pos[1] != ']') {
if (!pos[1]) {
throw std::runtime_error("unexpected end of input");
}
auto endchar_pair = parse_char(pos + 1);
pos = endchar_pair.second;
rule.push_back({LLAMA_GRETYPE_CHAR_RNG_UPPER, endchar_pair.first});
}
}
pos = parse_space(pos + 1, is_nested);
} else if (is_word_char(*pos)) { // rule reference
const char * name_end = parse_name(pos);
uint32_t ref_rule_id = get_symbol_id(pos, name_end - pos);
pos = parse_space(name_end, is_nested);
last_sym_start = rule.size();
rule.push_back({LLAMA_GRETYPE_RULE_REF, ref_rule_id});
} else if (*pos == '(') { // grouping
// parse nested alternates into synthesized rule
pos = parse_space(pos + 1, true);
uint32_t sub_rule_id = generate_symbol_id(rule_name);
pos = parse_alternates(pos, rule_name, sub_rule_id, true);
last_sym_start = rule.size();
// output reference to synthesized rule
rule.push_back({LLAMA_GRETYPE_RULE_REF, sub_rule_id});
if (*pos != ')') {
throw std::runtime_error(std::string("expecting ')' at ") + pos);
}
pos = parse_space(pos + 1, is_nested);
} else if (*pos == '.') { // any char
last_sym_start = rule.size();
rule.push_back({LLAMA_GRETYPE_CHAR_ANY, 0});
pos = parse_space(pos + 1, is_nested);
} else if (*pos == '*') {
pos = parse_space(pos + 1, is_nested);
handle_repetitions(0, -1);
} else if (*pos == '+') {
pos = parse_space(pos + 1, is_nested);
handle_repetitions(1, -1);
} else if (*pos == '?') {
pos = parse_space(pos + 1, is_nested);
handle_repetitions(0, 1);
} else if (*pos == '{') {
pos = parse_space(pos + 1, is_nested);
if (!is_digit_char(*pos)) {
throw std::runtime_error(std::string("expecting an int at ") + pos);
}
const char * int_end = parse_int(pos);
int min_times = std::stoul(std::string(pos, int_end - pos));
pos = parse_space(int_end, is_nested);
int max_times = -1;
if (*pos == '}') {
max_times = min_times;
pos = parse_space(pos + 1, is_nested);
} else if (*pos == ',') {
pos = parse_space(pos + 1, is_nested);
if (is_digit_char(*pos)) {
const char * int_end = parse_int(pos);
max_times = std::stoul(std::string(pos, int_end - pos));
pos = parse_space(int_end, is_nested);
}
if (*pos != '}') {
throw std::runtime_error(std::string("expecting '}' at ") + pos);
}
pos = parse_space(pos + 1, is_nested);
} else {
throw std::runtime_error(std::string("expecting ',' at ") + pos);
}
handle_repetitions(min_times, max_times);
} else {
break;
}
}
return pos;
}
const char * llama_grammar_parser::parse_rule(const char * src) {
const char * name_end = parse_name(src);
const char * pos = parse_space(name_end, false);
size_t name_len = name_end - src;
uint32_t rule_id = get_symbol_id(src, name_len);
const std::string name(src, name_len);
if (!(pos[0] == ':' && pos[1] == ':' && pos[2] == '=')) {
throw std::runtime_error(std::string("expecting ::= at ") + pos);
}
pos = parse_space(pos + 3, true);
pos = parse_alternates(pos, name, rule_id, false);
if (*pos == '\r') {
pos += pos[1] == '\n' ? 2 : 1;
} else if (*pos == '\n') {
pos++;
} else if (*pos) {
throw std::runtime_error(std::string("expecting newline or end at ") + pos);
}
return parse_space(pos, true);
}
bool llama_grammar_parser::parse(const char * src) {
try {
const char * pos = parse_space(src, true);
while (*pos) {
pos = parse_rule(pos);
}
// Validate the state to ensure that all rules are defined
for (const auto & rule : rules) {
if (rule.empty()) {
throw std::runtime_error("Undefined rule");
}
for (const auto & elem : rule) {
if (elem.type == LLAMA_GRETYPE_RULE_REF) {
// Ensure that the rule at that location exists
if (elem.value >= rules.size() || rules[elem.value].empty()) {
// Get the name of the rule that is missing
for (const auto & kv : symbol_ids) {
if (kv.second == elem.value) {
throw std::runtime_error("Undefined rule identifier '" + kv.first + "'");
}
}
}
}
}
}
} catch (const std::exception & err) {
fprintf(stderr, "%s: error parsing grammar: %s\n", __func__, err.what());
rules.clear();
return false;
}
return true;
}
void llama_grammar_parser::print(FILE * file) {
try {
std::map<uint32_t, std::string> symbol_id_names;
for (const auto & kv : symbol_ids) {
symbol_id_names[kv.second] = kv.first;
}
for (size_t i = 0, end = rules.size(); i < end; i++) {
// fprintf(file, "%zu: ", i);
// print_rule_binary(file, rules[i]);
print_rule(file, uint32_t(i), rules[i], symbol_id_names);
// fprintf(file, "\n");
}
} catch (const std::exception & err) {
fprintf(stderr, "\n%s: error printing grammar: %s\n", __func__, err.what());
}
}
llama_grammar_stack llama_grammar_parser::c_rules() const {
llama_grammar_stack ret;
ret.reserve(rules.size());
for (const auto & rule : rules) {
ret.push_back(rule.data());
}
return ret;
}
// returns true iff pos points to the end of one of the definitions of a rule
@ -89,7 +607,6 @@ static bool llama_grammar_is_end_of_sequence(const llama_grammar_element * pos)
static std::pair<bool, const llama_grammar_element *> llama_grammar_match_char(
const llama_grammar_element * pos,
const uint32_t chr) {
bool found = false;
bool is_positive_char = pos->type == LLAMA_GRETYPE_CHAR || pos->type == LLAMA_GRETYPE_CHAR_ANY;
@ -225,16 +742,93 @@ static void llama_grammar_advance_stack(
}
}
// takes a set of possible pushdown stacks on a grammar, which are required to
// be positioned at a character range (see `llama_grammar_advance_stack`), and
// produces the N possible stacks if the given char is accepted at those
// positions
static llama_grammar_candidates llama_grammar_reject_candidates(
const llama_grammar_rules & rules,
const llama_grammar_stacks & stacks,
const llama_grammar_candidates & candidates) {
GGML_ASSERT(!stacks.empty()); // REVIEW
if (candidates.empty()) {
return {};
}
auto rejects = llama_grammar_reject_candidates_for_stack(rules, stacks.front(), candidates);
for (size_t i = 1, size = stacks.size(); i < size; ++i) {
rejects = llama_grammar_reject_candidates_for_stack(rules, stacks[i], rejects);
}
return rejects;
}
static bool llama_grammar_detect_left_recursion(
const llama_grammar_rules & rules,
size_t rule_index,
std::vector<bool> * rules_visited,
std::vector<bool> * rules_in_progress,
std::vector<bool> * rules_may_be_empty) {
if ((*rules_in_progress)[rule_index]) {
return true;
}
(*rules_in_progress)[rule_index] = true;
const llama_grammar_rule & rule = rules[rule_index];
// First check if the rule might produce the empty string. This could be done combined with the second
// step but it's more readable as two steps.
bool at_rule_start = true;
for (size_t i = 0; i < rule.size(); i++) {
if (llama_grammar_is_end_of_sequence(&rule[i])) {
if (at_rule_start) {
(*rules_may_be_empty)[rule_index] = true;
break;
}
at_rule_start = true;
} else {
at_rule_start = false;
}
}
// Second, recurse into leftmost nonterminals (or next-leftmost as long as the previous nonterminal may
// be empty)
bool recurse_into_nonterminal = true;
for (size_t i = 0; i < rule.size(); i++) {
if (rule[i].type == LLAMA_GRETYPE_RULE_REF && recurse_into_nonterminal) {
if (llama_grammar_detect_left_recursion(rules, (size_t)rule[i].value, rules_visited, rules_in_progress, rules_may_be_empty)) {
return true;
}
if (!((*rules_may_be_empty)[(size_t)rule[i].value])) {
recurse_into_nonterminal = false;
}
} else if (llama_grammar_is_end_of_sequence(&rule[i])) {
recurse_into_nonterminal = true;
} else {
recurse_into_nonterminal = false;
}
}
(*rules_in_progress)[rule_index] = false;
(*rules_visited)[rule_index] = true;
return false;
}
const llama_grammar_rules & llama_grammar_get_rules(const struct llama_grammar * grammar) {
return grammar->rules;
}
llama_grammar_stacks & llama_grammar_get_stacks(struct llama_grammar * grammar) {
return grammar->stacks;
}
void llama_grammar_accept(
const llama_grammar_rules & rules,
const llama_grammar_stacks & stacks,
const uint32_t chr,
llama_grammar_stacks & new_stacks) {
new_stacks.clear();
llama_grammar_stacks & stacks_new) {
stacks_new.clear();
stacks_new.reserve(stacks.size());
for (const auto & stack : stacks) {
if (stack.empty()) {
@ -250,29 +844,11 @@ void llama_grammar_accept(
if (!llama_grammar_is_end_of_sequence(pos)) {
new_stack.push_back(pos);
}
llama_grammar_advance_stack(rules, new_stack, new_stacks);
llama_grammar_advance_stack(rules, new_stack, stacks_new);
}
}
}
static llama_grammar_candidates llama_grammar_reject_candidates(
const llama_grammar_rules & rules,
const llama_grammar_stacks & stacks,
const llama_grammar_candidates & candidates) {
GGML_ASSERT(!stacks.empty()); // REVIEW
if (candidates.empty()) {
return {};
}
auto rejects = llama_grammar_reject_candidates_for_stack(rules, stacks.front(), candidates);
for (size_t i = 1, size = stacks.size(); i < size; ++i) {
rejects = llama_grammar_reject_candidates_for_stack(rules, stacks[i], rejects);
}
return rejects;
}
llama_grammar_candidates llama_grammar_reject_candidates_for_stack(
const llama_grammar_rules & rules,
const llama_grammar_stack & stack,
@ -328,66 +904,13 @@ llama_grammar_candidates llama_grammar_reject_candidates_for_stack(
return rejects;
}
static bool llama_grammar_detect_left_recursion(
const llama_grammar_rules & rules,
size_t rule_index,
std::vector<bool> * rules_visited,
std::vector<bool> * rules_in_progress,
std::vector<bool> * rules_may_be_empty) {
if ((*rules_in_progress)[rule_index]) {
return true;
}
(*rules_in_progress)[rule_index] = true;
const llama_grammar_rule & rule = rules[rule_index];
// First check if the rule might produce the empty string. This could be done combined with the second
// step but it's more readable as two steps.
bool at_rule_start = true;
for (size_t i = 0; i < rule.size(); i++) {
if (llama_grammar_is_end_of_sequence(&rule[i])) {
if (at_rule_start) {
(*rules_may_be_empty)[rule_index] = true;
break;
}
at_rule_start = true;
} else {
at_rule_start = false;
}
}
// Second, recurse into leftmost nonterminals (or next-leftmost as long as the previous nonterminal may
// be empty)
bool recurse_into_nonterminal = true;
for (size_t i = 0; i < rule.size(); i++) {
if (rule[i].type == LLAMA_GRETYPE_RULE_REF && recurse_into_nonterminal) {
if (llama_grammar_detect_left_recursion(rules, (size_t)rule[i].value, rules_visited, rules_in_progress, rules_may_be_empty)) {
return true;
}
if (!((*rules_may_be_empty)[(size_t)rule[i].value])) {
recurse_into_nonterminal = false;
}
} else if (llama_grammar_is_end_of_sequence(&rule[i])) {
recurse_into_nonterminal = true;
} else {
recurse_into_nonterminal = false;
}
}
(*rules_in_progress)[rule_index] = false;
(*rules_visited)[rule_index] = true;
return false;
}
//
// grammar - external
//
////////////////////
struct llama_grammar * llama_grammar_init_impl(
const llama_grammar_element ** rules,
size_t n_rules,
size_t start_rule_index) {
const struct llama_vocab * vocab,
const llama_grammar_element ** rules,
size_t n_rules,
size_t start_rule_index) {
const llama_grammar_element * pos;
// copy rule definitions into vectors
@ -438,22 +961,104 @@ struct llama_grammar * llama_grammar_init_impl(
// Important: vec_rules has to be moved here, not copied, because stacks contains
// pointers to elements of vec_rules. If vec_rules were copied into llama_grammar
// then the pointers would be invalidated when the local vec_rules goes out of scope.
return new llama_grammar{ std::move(vec_rules), std::move(stacks), {} };
return new llama_grammar { vocab, std::move(vec_rules), std::move(stacks), {}, };
}
struct llama_grammar * llama_grammar_init_impl(const struct llama_vocab * vocab, const char * grammar_str, const char * grammar_root) {
llama_grammar_parser parser;
// if there is a grammar, parse it
if (!parser.parse(grammar_str)) {
return nullptr;
}
// will be empty (default) if there are parse errors
if (parser.rules.empty()) {
fprintf(stderr, "%s: failed to parse grammar\n", __func__);
return nullptr;
}
// Ensure that there is a "root" node.
if (parser.symbol_ids.find("root") == parser.symbol_ids.end()) {
fprintf(stderr, "%s: grammar does not contain a 'root' symbol\n", __func__);
return nullptr;
}
std::vector<const llama_grammar_element *> grammar_rules(parser.c_rules());
const size_t n_rules = grammar_rules.size();
const size_t start_rule_index = parser.symbol_ids.at(grammar_root);
const llama_grammar_element * pos;
// copy rule definitions into vectors
llama_grammar_rules vec_rules(n_rules);
for (size_t i = 0; i < n_rules; i++) {
for (pos = grammar_rules[i]; pos->type != LLAMA_GRETYPE_END; pos++) {
vec_rules[i].push_back(*pos);
}
vec_rules[i].push_back({LLAMA_GRETYPE_END, 0});
}
// Check for left recursion
std::vector<bool> rules_visited(n_rules);
std::vector<bool> rules_in_progress(n_rules);
std::vector<bool> rules_may_be_empty(n_rules);
for (size_t i = 0; i < n_rules; i++) {
if (rules_visited[i]) {
continue;
}
if (llama_grammar_detect_left_recursion(vec_rules, i, &rules_visited, &rules_in_progress, &rules_may_be_empty)) {
LLAMA_LOG_ERROR("unsupported grammar, left recursion detected for nonterminal at index %zu", i);
return nullptr;
}
}
// loop over alternates of start rule to build initial stacks
llama_grammar_stacks stacks;
pos = vec_rules[start_rule_index].data();
do {
llama_grammar_stack stack;
if (!llama_grammar_is_end_of_sequence(pos)) {
// if alternate is nonempty, add to stack
stack.push_back(pos);
}
llama_grammar_advance_stack(vec_rules, stack, stacks);
while (!llama_grammar_is_end_of_sequence(pos)) {
// scan to end of alternate def
pos++;
}
if (pos->type == LLAMA_GRETYPE_ALT) {
// there's another alternate def of this rule to process
pos++;
} else {
break;
}
} while (true);
// Important: vec_rules has to be moved here, not copied, because stacks contains
// pointers to elements of vec_rules. If vec_rules were copied into llama_grammar
// then the pointers would be invalidated when the local vec_rules goes out of scope.
return new llama_grammar { vocab, std::move(vec_rules), std::move(stacks), {}, };
}
void llama_grammar_free_impl(struct llama_grammar * grammar) {
if (grammar == nullptr) {
return;
}
delete grammar;
}
struct llama_grammar * llama_grammar_copy_impl(const struct llama_grammar * grammar) {
llama_grammar * result = new llama_grammar{ grammar->rules, grammar->stacks, grammar->partial_utf8 };
struct llama_grammar * llama_grammar_clone_impl(const struct llama_grammar & grammar) {
llama_grammar * result = new llama_grammar { grammar.vocab, grammar.rules, grammar.stacks, grammar.partial_utf8, };
// redirect elements in stacks to point to new rules
for (size_t is = 0; is < result->stacks.size(); is++) {
for (size_t ie = 0; ie < result->stacks[is].size(); ie++) {
for (size_t ir0 = 0; ir0 < grammar->rules.size(); ir0++) {
for (size_t ir1 = 0; ir1 < grammar->rules[ir0].size(); ir1++) {
if (grammar->stacks[is][ie] == &grammar->rules[ir0][ir1]) {
for (size_t ir0 = 0; ir0 < grammar.rules.size(); ir0++) {
for (size_t ir1 = 0; ir1 < grammar.rules[ir0].size(); ir1++) {
if (grammar.stacks[is][ie] == &grammar.rules[ir0][ir1]) {
result->stacks[is][ie] = &result->rules[ir0][ir1];
}
}
@ -464,14 +1069,11 @@ struct llama_grammar * llama_grammar_copy_impl(const struct llama_grammar * gram
return result;
}
void llama_grammar_sample_impl(const struct llama_grammar * grammar, const struct llama_vocab * vocab, const struct llama_sampling * smpl, llama_token_data_array * candidates) {
GGML_ASSERT(grammar);
GGML_ASSERT(vocab);
int64_t t_start_sample_us = ggml_time_us();
void llama_grammar_apply_impl(const struct llama_grammar & grammar, llama_token_data_array * cur_p) {
GGML_ASSERT(grammar.vocab != nullptr);
bool allow_eog = false;
for (const auto & stack : grammar->stacks) {
for (const auto & stack : grammar.stacks) {
if (stack.empty()) {
allow_eog = true;
break;
@ -479,40 +1081,38 @@ void llama_grammar_sample_impl(const struct llama_grammar * grammar, const struc
}
std::vector<std::pair<std::vector<uint32_t>, llama_partial_utf8>> candidates_decoded;
candidates_decoded.reserve(candidates->size);
candidates_decoded.reserve(cur_p->size);
llama_grammar_candidates candidates_grammar;
candidates_grammar.reserve(candidates->size);
candidates_grammar.reserve(cur_p->size);
for (size_t i = 0; i < candidates->size; ++i) {
const llama_token id = candidates->data[i].id;
const std::string & piece = vocab->cache_token_to_piece.at(id);
for (size_t i = 0; i < cur_p->size; ++i) {
const llama_token id = cur_p->data[i].id;
const std::string & piece = grammar.vocab->cache_token_to_piece.at(id);
if (llama_token_is_eog_impl(*vocab, id)) {
if (llama_token_is_eog_impl(*grammar.vocab, id)) {
if (!allow_eog) {
candidates->data[i].logit = -INFINITY;
cur_p->data[i].logit = -INFINITY;
}
} else if (piece.empty() || piece[0] == 0) {
candidates->data[i].logit = -INFINITY;
cur_p->data[i].logit = -INFINITY;
} else {
candidates_decoded.push_back(decode_utf8(piece, grammar->partial_utf8));
candidates_decoded.push_back(decode_utf8(piece, grammar.partial_utf8));
candidates_grammar.push_back({ i, candidates_decoded.back().first.data(), candidates_decoded.back().second });
}
}
const auto rejects = llama_grammar_reject_candidates(grammar->rules, grammar->stacks, candidates_grammar);
const auto rejects = llama_grammar_reject_candidates(grammar.rules, grammar.stacks, candidates_grammar);
for (const auto & reject : rejects) {
candidates->data[reject.index].logit = -INFINITY;
cur_p->data[reject.index].logit = -INFINITY;
}
smpl->t_sample_us += ggml_time_us() - t_start_sample_us;
}
void llama_grammar_accept_token_impl(struct llama_grammar * grammar, const struct llama_vocab * vocab, const struct llama_sampling * smpl, llama_token token) {
const int64_t t_start_sample_us = ggml_time_us();
void llama_grammar_accept_impl(struct llama_grammar & grammar, llama_token token) {
GGML_ASSERT(grammar.vocab != nullptr);
if (llama_token_is_eog_impl(*vocab, token)) {
for (const auto & stack : grammar->stacks) {
if (llama_token_is_eog_impl(*grammar.vocab, token)) {
for (const auto & stack : grammar.stacks) {
if (stack.empty()) {
return;
}
@ -520,20 +1120,19 @@ void llama_grammar_accept_token_impl(struct llama_grammar * grammar, const struc
GGML_ABORT("fatal error");
}
const std::string & piece = vocab->cache_token_to_piece.at(token);
const std::string & piece = grammar.vocab->cache_token_to_piece.at(token);
// Note terminating 0 in decoded string
const auto decoded = decode_utf8(piece, grammar->partial_utf8);
const auto decoded = decode_utf8(piece, grammar.partial_utf8);
const auto & code_points = decoded.first;
llama_grammar_stacks tmp_new_stacks;
llama_grammar_stacks stacks_new;
for (auto it = code_points.begin(), end = code_points.end() - 1; it != end; ++it) {
llama_grammar_accept(grammar->rules, grammar->stacks, *it, tmp_new_stacks);
grammar->stacks = tmp_new_stacks;
llama_grammar_accept(grammar.rules, grammar.stacks, *it, stacks_new);
grammar.stacks = std::move(stacks_new);
}
grammar->partial_utf8 = decoded.second;
GGML_ASSERT(!grammar->stacks.empty());
smpl->t_sample_us += ggml_time_us() - t_start_sample_us;
grammar.partial_utf8 = decoded.second;
GGML_ASSERT(!grammar.stacks.empty());
}

135
examples/talk-llama/llama-grammar.h
View File

@ -2,11 +2,115 @@
#include "llama-impl.h"
#include <map>
struct llama_vocab;
struct llama_sampling;
// grammar element type
enum llama_gretype {
// end of rule definition
LLAMA_GRETYPE_END = 0,
// start of alternate definition for rule
LLAMA_GRETYPE_ALT = 1,
// non-terminal element: reference to rule
LLAMA_GRETYPE_RULE_REF = 2,
// terminal element: character (code point)
LLAMA_GRETYPE_CHAR = 3,
// inverse char(s) ([^a], [^a-b] [^abc])
LLAMA_GRETYPE_CHAR_NOT = 4,
// modifies a preceding LLAMA_GRETYPE_CHAR or LLAMA_GRETYPE_CHAR_ALT to
// be an inclusive range ([a-z])
LLAMA_GRETYPE_CHAR_RNG_UPPER = 5,
// modifies a preceding LLAMA_GRETYPE_CHAR or
// LLAMA_GRETYPE_CHAR_RNG_UPPER to add an alternate char to match ([ab], [a-zA])
LLAMA_GRETYPE_CHAR_ALT = 6,
// any character (.)
LLAMA_GRETYPE_CHAR_ANY = 7,
};
typedef struct llama_grammar_element {
enum llama_gretype type;
uint32_t value; // Unicode code point or rule ID
} llama_grammar_element;
struct llama_partial_utf8 {
uint32_t value; // bit value so far (unshifted)
int n_remain; // num bytes remaining; -1 indicates invalid sequence
};
struct llama_grammar_candidate {
size_t index;
const uint32_t * code_points;
llama_partial_utf8 partial_utf8;
};
using llama_grammar_rule = std::vector< llama_grammar_element>;
using llama_grammar_stack = std::vector<const llama_grammar_element *>;
using llama_grammar_rules = std::vector<llama_grammar_rule>;
using llama_grammar_stacks = std::vector<llama_grammar_stack>;
using llama_grammar_candidates = std::vector<llama_grammar_candidate>;
const llama_grammar_rules & llama_grammar_get_rules (const struct llama_grammar * grammar);
llama_grammar_stacks & llama_grammar_get_stacks( struct llama_grammar * grammar);
// takes a set of possible pushdown stacks on a grammar, which are required to
// be positioned at a character range (see `llama_grammar_advance_stack`), and
// produces the N possible stacks if the given char is accepted at those
// positions
void llama_grammar_accept(
const llama_grammar_rules & rules,
const llama_grammar_stacks & stacks,
uint32_t chr,
llama_grammar_stacks & stacks_new);
std::vector<llama_grammar_candidate> llama_grammar_reject_candidates_for_stack(
const llama_grammar_rules & rules,
const llama_grammar_stack & stack,
const llama_grammar_candidates & candidates);
struct llama_grammar_parser {
std::map<std::string, uint32_t> symbol_ids;
llama_grammar_rules rules;
llama_grammar_stack c_rules() const;
uint32_t get_symbol_id(const char * src, size_t len);
uint32_t generate_symbol_id(const std::string & base_name);
void add_rule(uint32_t rule_id, const llama_grammar_rule & rule);
const char * parse_alternates(
const char * src,
const std::string & rule_name,
uint32_t rule_id,
bool is_nested);
const char * parse_sequence(
const char * src,
const std::string & rule_name,
llama_grammar_rule & rule,
bool is_nested);
const char * parse_rule(const char * src);
bool parse(const char * src);
void print(FILE * file);
};
struct llama_grammar {
const llama_grammar_rules rules;
// note: allow null vocab for testing (not great)
const llama_vocab * vocab;
const llama_grammar_rules rules; // TODO: shared ptr
llama_grammar_stacks stacks;
// buffer for partially generated UTF-8 sequence from accepted tokens
@ -17,23 +121,24 @@ struct llama_grammar {
// internal API
//
// note: needed for tests (not great)
struct llama_grammar * llama_grammar_init_impl(
const llama_grammar_element ** rules,
size_t n_rules,
size_t start_rule_index);
const struct llama_vocab * vocab,
const llama_grammar_element ** rules,
size_t n_rules,
size_t start_rule_index);
struct llama_grammar * llama_grammar_init_impl(const struct llama_vocab * vocab, const char * grammar_str, const char * grammar_root);
void llama_grammar_free_impl(struct llama_grammar * grammar);
struct llama_grammar * llama_grammar_copy_impl(const struct llama_grammar * grammar);
struct llama_grammar * llama_grammar_clone_impl(const struct llama_grammar & grammar);
void llama_grammar_sample_impl(
const struct llama_grammar * grammar,
const struct llama_vocab * vocab,
const struct llama_sampling * smpl,
llama_token_data_array * candidates);
// TODO: move the API below as member functions of llama_grammar
void llama_grammar_apply_impl(
const struct llama_grammar & grammar,
llama_token_data_array * cur_p);
void llama_grammar_accept_token_impl(
struct llama_grammar * grammar,
const struct llama_vocab * vocab,
const struct llama_sampling * smpl,
void llama_grammar_accept_impl(
struct llama_grammar & grammar,
llama_token token);

136
examples/talk-llama/llama-impl.h
View File

@ -1,8 +1,11 @@
#pragma once
#define LLAMA_API_INTERNAL
#include "llama.h"
#include <string>
#include <vector>
#include <stdexcept>
#ifdef __GNUC__
#ifdef __MINGW32__
#define LLAMA_ATTRIBUTE_FORMAT(...) __attribute__((format(gnu_printf, __VA_ARGS__)))
@ -21,14 +24,31 @@ LLAMA_ATTRIBUTE_FORMAT(2, 3)
void llama_log_internal (ggml_log_level level, const char * format, ...);
void llama_log_callback_default(ggml_log_level level, const char * text, void * user_data);
#define LLAMA_LOG(...) llama_log_internal(GGML_LOG_LEVEL_NONE , __VA_ARGS__)
#define LLAMA_LOG_INFO(...) llama_log_internal(GGML_LOG_LEVEL_INFO , __VA_ARGS__)
#define LLAMA_LOG_WARN(...) llama_log_internal(GGML_LOG_LEVEL_WARN , __VA_ARGS__)
#define LLAMA_LOG_ERROR(...) llama_log_internal(GGML_LOG_LEVEL_ERROR, __VA_ARGS__)
#define LLAMA_LOG_DEBUG(...) llama_log_internal(GGML_LOG_LEVEL_DEBUG, __VA_ARGS__)
#define LLAMA_LOG_CONT(...) llama_log_internal(GGML_LOG_LEVEL_CONT , __VA_ARGS__)
//
// helpers
//
struct time_meas {
time_meas(int64_t & t_acc, bool disable = false) : t_start_us(disable ? -1 : ggml_time_us()), t_acc(t_acc) {}
~time_meas() {
if (t_start_us >= 0) {
t_acc += ggml_time_us() - t_start_us;
}
}
const int64_t t_start_us;
int64_t & t_acc;
};
static void replace_all(std::string & s, const std::string & search, const std::string & replace) {
if (search.empty()) {
return;
@ -45,3 +65,117 @@ static void replace_all(std::string & s, const std::string & search, const std::
builder.append(s, last_pos, std::string::npos);
s = std::move(builder);
}
const std::vector<std::pair<std::string, struct ggml_tensor *>> & llama_internal_get_tensor_map(
struct llama_context * ctx
);
// the ring buffer works similarly to std::deque, but with a fixed capacity
template<typename T>
struct ring_buffer {
ring_buffer(size_t cap) : capacity(cap), data(cap) {}
T & front() {
if (sz == 0) {
throw std::runtime_error("ring buffer is empty");
}
return data[first];
}
const T & front() const {
if (sz == 0) {
throw std::runtime_error("ring buffer is empty");
}
return data[first];
}
T & back() {
if (sz == 0) {
throw std::runtime_error("ring buffer is empty");
}
return data[pos];
}
const T & back() const {
if (sz == 0) {
throw std::runtime_error("ring buffer is empty");
}
return data[pos];
}
void push_back(const T & value) {
if (capacity == 0) {
throw std::runtime_error("ring buffer: capacity is zero");
}
if (sz == capacity) {
// advance the start when buffer is full
first = (first + 1) % capacity;
} else {
sz++;
}
data[pos] = value;
pos = (pos + 1) % capacity;
}
T pop_front() {
if (sz == 0) {
throw std::runtime_error("ring buffer is empty");
}
T value = data[first];
first = (first + 1) % capacity;
sz--;
return value;
}
//T & operator[](size_t i) {
// if (i >= sz) {
// throw std::runtime_error("ring buffer: index out of bounds");
// }
// return data[(first + i) % capacity];
//}
//const T & at(size_t i) const {
// if (i >= sz) {
// throw std::runtime_error("ring buffer: index out of bounds");
// }
// return data[(first + i) % capacity];
//}
const T & rat(size_t i) const {
if (i >= sz) {
throw std::runtime_error("ring buffer: index out of bounds");
}
return data[(first + sz - i - 1) % capacity];
}
std::vector<T> to_vector() const {
std::vector<T> result;
result.reserve(sz);
for (size_t i = 0; i < sz; i++) {
result.push_back(data[(first + i) % capacity]);
}
return result;
}
void clear() {
// here only reset the status of the buffer
sz = 0;
first = 0;
pos = 0;
}
bool empty() const {
return sz == 0;
}
size_t size() const {
return sz;
}
size_t capacity = 0;
size_t sz = 0;
size_t first = 0;
size_t pos = 0;
std::vector<T> data;
};

1770
examples/talk-llama/llama-sampling.cpp
View File

File diff suppressed because it is too large Load Diff

67
examples/talk-llama/llama-sampling.h
View File

@ -1,56 +1,29 @@
#pragma once
#include "llama-impl.h"
// TODO: rename llama-sampling.h/.cpp to llama-sampler.h/.cpp ?
struct llama_sampling {
llama_sampling(int32_t n_vocab) : n_vocab(n_vocab) {}
#include "llama-grammar.h"
std::mt19937 rng;
#include <unordered_map>
int32_t n_vocab = 0;
struct llama_vocab;
struct llama_grammar;
mutable int64_t t_sample_us = 0;
mutable int32_t n_sample = 0;
// sampler chain
void reset_timings() const {
t_sample_us = 0;
n_sample = 0;
}
struct llama_sampler_chain {
llama_sampler_chain_params params;
std::vector<struct llama_sampler *> samplers;
// timing
mutable int64_t t_sample_us;
mutable int32_t n_sample;
};
//
// internal API
//
void llama_set_rng_seed_impl(struct llama_sampling * smpl, uint32_t seed);
void llama_sample_softmax_impl (struct llama_sampling * smpl, llama_token_data_array * candidates);
void llama_sample_top_k_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, int32_t k, size_t min_keep);
void llama_sample_top_p_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, float p, size_t min_keep);
void llama_sample_min_p_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, float p, size_t min_keep);
void llama_sample_tail_free_impl(struct llama_sampling * smpl, llama_token_data_array * candidates, float z, size_t min_keep);
void llama_sample_typical_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, float p, size_t min_keep);
void llama_sample_entropy_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, float min_temp, float max_temp, float exponent_val);
void llama_sample_temp_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, float temp);
void llama_sample_repetition_penalties_impl(
struct llama_sampling * smpl,
llama_token_data_array * candidates,
const llama_token * last_tokens,
size_t penalty_last_n,
float penalty_repeat,
float penalty_freq,
float penalty_present);
void llama_sample_apply_guidance_impl(
struct llama_sampling * smpl,
float * logits,
float * logits_guidance,
float scale);
llama_token llama_sample_token_mirostat_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, float tau, float eta, int32_t m, float * mu);
llama_token llama_sample_token_mirostat_v2_impl(struct llama_sampling * smpl, llama_token_data_array * candidates, float tau, float eta, float * mu);
llama_token llama_sample_token_greedy_impl (struct llama_sampling * smpl, llama_token_data_array * candidates);
llama_token llama_sample_token_with_rng_impl (struct llama_sampling * smpl, llama_token_data_array * candidates, std::mt19937 & rng);
llama_token llama_sample_token_impl (struct llama_sampling * smpl, llama_token_data_array * candidates);
struct llama_sampler * llama_sampler_init_grammar_impl(
const struct llama_vocab & vocab,
const char * grammar_str,
const char * grammar_root);

153
examples/talk-llama/llama-vocab.cpp
View File

@ -58,17 +58,17 @@ struct naive_trie {
auto res = children.find(c);
if (res != children.end()) {
return res->second.get_longest_prefix(key, len, offset + 1);
} else {
return std::make_pair(key, offset);
}
return std::make_pair(key, offset);
}
struct naive_trie * traverse(const char c) {
const struct naive_trie * traverse(const char c) const {
auto res = children.find(c);
if (res != children.end()) {
return &res->second;
} else {
return NULL;
}
return NULL;
}
std::map<char, struct naive_trie> children;
bool has_value;
@ -843,7 +843,7 @@ struct llm_tokenizer_ugm {
// traverse the token matcher trie to find a matching token
bool single_codepoint_token_found = false;
const struct best_tokenization & current_best = tokenization_results[input_offset];
struct naive_trie * node = token_matcher.traverse(normalized[prefix_offset++]);
const struct naive_trie * node = token_matcher.traverse(normalized[prefix_offset++]);
while (prefix_offset <= input_len && node != NULL) {
// check if we found valid token in prefix
@ -963,7 +963,7 @@ private:
/*
* This structure is a view wrapper for XOR-compressed double array (XCDA)
* See Shunsuke Kanda (2018). Space- and Time-Efficient String Dictionaries.
* Eeach bit-packed entry contains:
* Each bit-packed entry contains:
* - BASE array value in bits 10-30
* - LCHECK array value in bits 0-7
* - LEAF array value in bit 9
@ -1097,6 +1097,111 @@ private:
struct naive_trie token_matcher;
};
//
// RWKV tokenizer
//
static std::vector<uint8_t> llama_unescape_rwkv_token(const std::string & escaped) {
std::vector<uint8_t> output;
output.reserve(escaped.size());
// Parser state
bool escaping = false;
uint8_t hex_remaining = 0;
uint8_t hex_acc = 0;
// Step through characters, performing parsing
for (const char & c : escaped) {
// If we're parsing a hex code, interpret the next character
if (hex_remaining != 0) {
uint8_t value = (c >= 'a') ? (c - 'a' + 10) : (c - '0');
hex_acc = (hex_acc << 4) + value;
hex_remaining -= 1;
if (hex_remaining == 0) {
output.push_back(hex_acc);
hex_acc = 0;
}
continue;
}
// If we got an escape character, interpret it
if (escaping) {
if (c == 't') {
output.push_back('\t');
} else if (c == 'n') {
output.push_back('\n');
} else if (c == 'r') {
output.push_back('\r');
} else if (c == 'x') {
hex_remaining = 2;
} else {
output.push_back(c);
}
escaping = false;
continue;
}
if (c == '\\') {
escaping = true;
continue;
}
output.push_back(c);
}
return output;
}
struct llm_tokenizer_rwkv {
llm_tokenizer_rwkv(const llama_vocab & vocab): vocab(vocab) {
// RWKV supports arbitrary byte tokens, but the vocab struct only supports string tokens.
// For now, we decode the vocab here into the lookup we'll use for tokenization.
// build trie
for (unsigned int id = 0; id < vocab.id_to_token.size(); ++id) {
const auto & token = vocab.id_to_token[id];
const auto data = llama_unescape_rwkv_token(token.text);
token_matcher.insert((const char *) data.data(), data.size(), id);
}
}
void tokenize(const std::string & text, std::vector<llama_vocab::id> & output) {
uint32_t position = 0;
while (position < text.size()) {
const struct naive_trie * node = token_matcher.traverse(text[position]);
if (node == NULL) {
// no matching token found, add unknown token
output.push_back(vocab.special_unk_id);
position += 1;
continue;
}
// traverse the trie to find the longest matching token
uint32_t token_id = 0;
uint32_t token_length = 0;
while (node != NULL) {
if (node->has_value) {
token_id = node->value;
token_length = position + 1;
}
node = node->traverse(text[++position]);
}
// add the longest matching token
output.push_back(token_id);
position = token_length;
}
}
const llama_vocab & vocab;
struct naive_trie token_matcher;
};
//
// (de-) tokenize
//
@ -1401,6 +1506,23 @@ std::vector<llama_vocab::id> llama_tokenize_internal(const llama_vocab & vocab,
output.push_back(vocab.special_eos_id);
}
} break;
case LLAMA_VOCAB_TYPE_RWKV:
{
for (const auto & fragment : fragment_buffer) {
if (fragment.type == FRAGMENT_BUFFER_VARIANT_TYPE_RAW_TEXT) {
auto raw_text = fragment.raw_text.substr(fragment.offset, fragment.length);
#ifdef PRETOKENIZERDEBUG
LLAMA_LOG_WARN("TT: (%ld %ld %ld) '%s'\n", raw_text.length(), fragment.offset, fragment.length, raw_text.c_str());
#endif
llm_tokenizer_rwkv tokenizer(vocab);
tokenizer.tokenize(raw_text, output);
} else { // if (fragment.type == FRAGMENT_BUFFER_VARIANT_TYPE_TOKEN)
output.push_back(fragment.token);
}
}
} break;
case LLAMA_VOCAB_TYPE_NONE:
GGML_ABORT("fatal error");
}
@ -1448,11 +1570,7 @@ llama_token_attr llama_token_get_attr_impl(const struct llama_vocab & vocab, lla
}
bool llama_token_is_eog_impl(const struct llama_vocab & vocab, llama_token token) {
return token != -1 && (
token == llama_token_eos_impl(vocab) ||
token == llama_token_eot_impl(vocab) ||
token == llama_token_eom_impl(vocab)
);
return token != -1 && vocab.special_eog_ids.count(token) > 0;
}
bool llama_token_is_control_impl(const struct llama_vocab & vocab, llama_token token) {
@ -1616,6 +1734,17 @@ int32_t llama_token_to_piece_impl(const struct llama_vocab & vocab, llama_token
}
break;
}
case LLAMA_VOCAB_TYPE_RWKV: {
std::vector<uint8_t> result = llama_unescape_rwkv_token(token_text);
// If we don't have enough space, return an error
if (result.size() > (size_t)length) {
return -(int)result.size();
}
memcpy(buf, result.data(), result.size());
return (int)result.size();
}
default:
GGML_ABORT("fatal error");
}

19
examples/talk-llama/llama-vocab.h
View File

@ -6,6 +6,7 @@
#include <vector>
#include <unordered_map>
#include <map>
#include <set>
struct llama_vocab {
using id = llama_token;
@ -18,6 +19,8 @@ struct llama_vocab {
tattr attr;
};
uint32_t n_vocab = 0; // TODO: not great because has to keep in sync with hparams.n_vocab
enum llama_vocab_type type = LLAMA_VOCAB_TYPE_SPM;
enum llama_vocab_pre_type type_pre = LLAMA_VOCAB_PRE_TYPE_DEFAULT;
@ -47,12 +50,15 @@ struct llama_vocab {
id special_eot_id = -1; // TODO: move above after "eos_id", and here add "file separator" token
id special_eom_id = -1;
// set of all tokens that cause "end of generation"
std::set<id> special_eog_ids;
// tokenizer flags
bool tokenizer_add_space_prefix = false;
bool tokenizer_add_bos = false;
bool tokenizer_add_eos = false;
bool tokenizer_ignore_merges = false;
bool tokenizer_clean_spaces = false; // clean_up_tokenization_spaces
bool tokenizer_add_space_prefix = false;
bool tokenizer_add_bos = false;
bool tokenizer_add_eos = false;
bool tokenizer_ignore_merges = false;
bool tokenizer_clean_spaces = false; // clean_up_tokenization_spaces
bool tokenizer_remove_extra_whitespaces = false;
bool tokenizer_escape_whitespaces = true;
bool tokenizer_treat_whitespace_as_suffix = false;
@ -62,8 +68,6 @@ struct llama_vocab {
int find_bpe_rank(const std::string & token_left, const std::string & token_right) const;
};
const struct llama_vocab * llama_get_vocab(const struct llama_context * ctx);
//
// internal API
//
@ -76,6 +80,7 @@ std::vector<llama_vocab::id> llama_tokenize_internal(
bool add_special,
bool parse_special = false);
// TODO: move the API below as member functions of llama_vocab
llama_token llama_byte_to_token_impl(const llama_vocab & vocab, uint8_t ch);
const char * llama_token_get_text_impl(const struct llama_vocab & vocab, llama_token token);

1836
examples/talk-llama/llama.cpp
View File

File diff suppressed because it is too large Load Diff

463
examples/talk-llama/llama.h
View File

@ -33,12 +33,15 @@
#define LLAMA_DEFAULT_SEED 0xFFFFFFFF
// TODO: use everywhere in the implementation
#define LLAMA_TOKEN_NULL -1
#define LLAMA_FILE_MAGIC_GGLA 0x67676c61u // 'ggla'
#define LLAMA_FILE_MAGIC_GGSN 0x6767736eu // 'ggsn'
#define LLAMA_FILE_MAGIC_GGSQ 0x67677371u // 'ggsq'
#define LLAMA_SESSION_MAGIC LLAMA_FILE_MAGIC_GGSN
#define LLAMA_SESSION_VERSION 8
#define LLAMA_SESSION_VERSION 9
#define LLAMA_STATE_SEQ_MAGIC LLAMA_FILE_MAGIC_GGSQ
#define LLAMA_STATE_SEQ_VERSION 2
@ -53,8 +56,10 @@ extern "C" {
// TODO: show sample usage
//
// struct llama_vocab; // TODO: add in the future
struct llama_model;
struct llama_context;
struct llama_sampler;
typedef int32_t llama_pos;
typedef int32_t llama_token;
@ -66,6 +71,7 @@ extern "C" {
LLAMA_VOCAB_TYPE_BPE = 2, // GPT-2 tokenizer based on byte-level BPE
LLAMA_VOCAB_TYPE_WPM = 3, // BERT tokenizer based on WordPiece
LLAMA_VOCAB_TYPE_UGM = 4, // T5 tokenizer based on Unigram
LLAMA_VOCAB_TYPE_RWKV = 5, // RWKV tokenizer based on greedy tokenization
};
// pre-tokenization types
@ -166,6 +172,8 @@ extern "C" {
LLAMA_FTYPE_MOSTLY_Q4_0_4_4 = 33, // except 1d tensors
LLAMA_FTYPE_MOSTLY_Q4_0_4_8 = 34, // except 1d tensors
LLAMA_FTYPE_MOSTLY_Q4_0_8_8 = 35, // except 1d tensors
LLAMA_FTYPE_MOSTLY_TQ1_0 = 36, // except 1d tensors
LLAMA_FTYPE_MOSTLY_TQ2_0 = 37, // except 1d tensors
LLAMA_FTYPE_GUESSED = 1024, // not specified in the model file
};
@ -198,6 +206,7 @@ extern "C" {
LLAMA_SPLIT_MODE_ROW = 2, // split rows across GPUs
};
// TODO: simplify (https://github.com/ggerganov/llama.cpp/pull/9294#pullrequestreview-2286561979)
typedef struct llama_token_data {
llama_token id; // token id
float logit; // log-odds of the token
@ -205,8 +214,10 @@ extern "C" {
} llama_token_data;
typedef struct llama_token_data_array {
// TODO: consider SoA
llama_token_data * data;
size_t size;
int64_t selected; // this is the index in the data array (i.e. not the token id)
bool sorted;
} llama_token_data_array;
@ -267,9 +278,9 @@ extern "C" {
enum llama_split_mode split_mode; // how to split the model across multiple GPUs
// main_gpu interpretation depends on split_mode:
// LLAMA_SPLIT_NONE: the GPU that is used for the entire model
// LLAMA_SPLIT_ROW: the GPU that is used for small tensors and intermediate results
// LLAMA_SPLIT_LAYER: ignored
// LLAMA_SPLIT_MODE_NONE: the GPU that is used for the entire model
// LLAMA_SPLIT_MODE_ROW: the GPU that is used for small tensors and intermediate results
// LLAMA_SPLIT_MODE_LAYER: ignored
int32_t main_gpu;
// proportion of the model (layers or rows) to offload to each GPU, size: llama_max_devices()
@ -299,13 +310,12 @@ extern "C" {
// NOTE: changing the default values of parameters marked as [EXPERIMENTAL] may cause crashes or incorrect results in certain configurations
// https://github.com/ggerganov/llama.cpp/pull/7544
struct llama_context_params {
uint32_t seed; // RNG seed, -1 for random
uint32_t n_ctx; // text context, 0 = from model
uint32_t n_batch; // logical maximum batch size that can be submitted to llama_decode
uint32_t n_ubatch; // physical maximum batch size
uint32_t n_seq_max; // max number of sequences (i.e. distinct states for recurrent models)
uint32_t n_threads; // number of threads to use for generation
uint32_t n_threads_batch; // number of threads to use for batch processing
int32_t n_threads; // number of threads to use for generation
int32_t n_threads_batch; // number of threads to use for batch processing
enum llama_rope_scaling_type rope_scaling_type; // RoPE scaling type, from `enum llama_rope_scaling_type`
enum llama_pooling_type pooling_type; // whether to pool (sum) embedding results by sequence id
@ -327,11 +337,13 @@ extern "C" {
enum ggml_type type_k; // data type for K cache [EXPERIMENTAL]
enum ggml_type type_v; // data type for V cache [EXPERIMENTAL]
// Keep the booleans together to avoid misalignment during copy-by-value.
// Keep the booleans together and at the end of the struct to avoid misalignment during copy-by-value.
// TODO: move at the end of the struct
bool logits_all; // the llama_decode() call computes all logits, not just the last one (DEPRECATED - set llama_batch.logits instead)
bool embeddings; // if true, extract embeddings (together with logits)
bool offload_kqv; // whether to offload the KQV ops (including the KV cache) to GPU
bool flash_attn; // whether to use flash attention [EXPERIMENTAL]
bool no_perf; // whether to measure performance timings
// Abort callback
// if it returns true, execution of llama_decode() will be aborted
@ -355,56 +367,14 @@ extern "C" {
void * kv_overrides; // pointer to vector containing overrides
} llama_model_quantize_params;
// grammar types
struct llama_grammar;
typedef struct llama_logit_bias {
llama_token token;
float bias;
} llama_logit_bias;
// grammar element type
enum llama_gretype {
// end of rule definition
LLAMA_GRETYPE_END = 0,
// start of alternate definition for rule
LLAMA_GRETYPE_ALT = 1,
// non-terminal element: reference to rule
LLAMA_GRETYPE_RULE_REF = 2,
// terminal element: character (code point)
LLAMA_GRETYPE_CHAR = 3,
// inverse char(s) ([^a], [^a-b] [^abc])
LLAMA_GRETYPE_CHAR_NOT = 4,
// modifies a preceding LLAMA_GRETYPE_CHAR or LLAMA_GRETYPE_CHAR_ALT to
// be an inclusive range ([a-z])
LLAMA_GRETYPE_CHAR_RNG_UPPER = 5,
// modifies a preceding LLAMA_GRETYPE_CHAR or
// LLAMA_GRETYPE_CHAR_RNG_UPPER to add an alternate char to match ([ab], [a-zA])
LLAMA_GRETYPE_CHAR_ALT = 6,
// any character (.)
LLAMA_GRETYPE_CHAR_ANY = 7,
};
typedef struct llama_grammar_element {
enum llama_gretype type;
uint32_t value; // Unicode code point or rule ID
} llama_grammar_element;
// performance timing information
struct llama_timings {
double t_start_ms;
double t_end_ms;
double t_load_ms;
double t_sample_ms;
double t_p_eval_ms;
double t_eval_ms;
int32_t n_sample;
int32_t n_p_eval;
int32_t n_eval;
};
typedef struct llama_sampler_chain_params {
bool no_perf; // whether to measure performance timings
} llama_sampler_chain_params;
// used in chat template
typedef struct llama_chat_message {
@ -416,8 +386,10 @@ extern "C" {
struct llama_lora_adapter;
// Helpers for getting default parameters
LLAMA_API struct llama_model_params llama_model_default_params(void);
LLAMA_API struct llama_context_params llama_context_default_params(void);
// TODO: update API to start accepting pointers to params structs (https://github.com/ggerganov/llama.cpp/discussions/9172)
LLAMA_API struct llama_model_params llama_model_default_params(void);
LLAMA_API struct llama_context_params llama_context_default_params(void);
LLAMA_API struct llama_sampler_chain_params llama_sampler_chain_default_params(void);
LLAMA_API struct llama_model_quantize_params llama_model_quantize_default_params(void);
// Initialize the llama + ggml backend
@ -428,15 +400,23 @@ extern "C" {
//optional:
LLAMA_API void llama_numa_init(enum ggml_numa_strategy numa);
// Optional: an auto threadpool gets created in ggml if not passed explicitly
LLAMA_API void llama_attach_threadpool(
struct llama_context * ctx,
ggml_threadpool_t threadpool,
ggml_threadpool_t threadpool_batch);
LLAMA_API void llama_detach_threadpool(struct llama_context * ctx);
// Call once at the end of the program - currently only used for MPI
LLAMA_API void llama_backend_free(void);
LLAMA_API struct llama_model * llama_load_model_from_file(
const char * path_model,
struct llama_model_params params);
struct llama_model_params params);
LLAMA_API void llama_free_model(struct llama_model * model);
// TODO: rename to llama_init_from_model
LLAMA_API struct llama_context * llama_new_context_with_model(
struct llama_model * model,
struct llama_context_params params);
@ -452,22 +432,22 @@ extern "C" {
LLAMA_API bool llama_supports_mlock (void);
LLAMA_API bool llama_supports_gpu_offload(void);
LLAMA_API const struct llama_model * llama_get_model(const struct llama_context * ctx);
LLAMA_API uint32_t llama_n_ctx (const struct llama_context * ctx);
LLAMA_API uint32_t llama_n_batch (const struct llama_context * ctx);
LLAMA_API uint32_t llama_n_ubatch (const struct llama_context * ctx);
LLAMA_API uint32_t llama_n_seq_max (const struct llama_context * ctx);
LLAMA_API enum llama_pooling_type llama_pooling_type(const struct llama_context * ctx);
LLAMA_API enum llama_vocab_type llama_vocab_type (const struct llama_model * model);
LLAMA_API enum llama_rope_type llama_rope_type (const struct llama_model * model);
LLAMA_API int32_t llama_n_vocab (const struct llama_model * model);
LLAMA_API int32_t llama_n_ctx_train(const struct llama_model * model);
LLAMA_API int32_t llama_n_embd (const struct llama_model * model);
LLAMA_API int32_t llama_n_layer (const struct llama_model * model);
LLAMA_API int32_t llama_n_head (const struct llama_model * model);
LLAMA_API const struct llama_model * llama_get_model(const struct llama_context * ctx);
LLAMA_API enum llama_pooling_type llama_pooling_type(const struct llama_context * ctx);
LLAMA_API enum llama_vocab_type llama_vocab_type (const struct llama_model * model);
LLAMA_API enum llama_rope_type llama_rope_type (const struct llama_model * model);
// Get the model's RoPE frequency scaling factor
LLAMA_API float llama_rope_freq_scale_train(const struct llama_model * model);
@ -696,7 +676,7 @@ extern "C" {
//
// Returns the *actual* size in bytes of the state
// (rng, logits, embedding and kv_cache)
// (logits, embedding and kv_cache)
// Only use when saving the state, not when restoring it, otherwise the size may be too small.
LLAMA_API size_t llama_state_get_size(struct llama_context * ctx);
LLAMA_API DEPRECATED(size_t llama_get_state_size(struct llama_context * ctx),
@ -837,13 +817,13 @@ extern "C" {
// Set the number of threads used for decoding
// n_threads is the number of threads used for generation (single token)
// n_threads_batch is the number of threads used for prompt and batch processing (multiple tokens)
LLAMA_API void llama_set_n_threads(struct llama_context * ctx, uint32_t n_threads, uint32_t n_threads_batch);
LLAMA_API void llama_set_n_threads(struct llama_context * ctx, int32_t n_threads, int32_t n_threads_batch);
// Get the number of threads used for generation of a single token.
LLAMA_API uint32_t llama_n_threads(struct llama_context * ctx);
LLAMA_API int32_t llama_n_threads(struct llama_context * ctx);
// Get the number of threads used for prompt and batch processing (multiple token).
LLAMA_API uint32_t llama_n_threads_batch(struct llama_context * ctx);
LLAMA_API int32_t llama_n_threads_batch(struct llama_context * ctx);
// Set whether the model is in embeddings mode or not
// If true, embeddings will be returned but logits will not
@ -999,121 +979,114 @@ extern "C" {
int32_t length);
//
// Grammar
// Sampling API
//
// Sample usage:
//
// // prepare the sampling chain at the start
// auto sparams = llama_sampler_chain_default_params();
//
// llama_sampler * smpl = llama_sampler_chain_init(sparams);
//
// llama_sampler_chain_add(smpl, llama_sampler_init_top_k(50));
// llama_sampler_chain_add(smpl, llama_sampler_init_top_p(0.9, 1));
// llama_sampler_chain_add(smpl, llama_sampler_init_temp (0.8));
//
// // typically, the chain should end with a sampler such as "greedy", "dist" or "mirostat"
// // this sampler will be responsible to select the actual token
// llama_sampler_chain_add(smpl, llama_sampler_init_dist(seed));
//
// ...
//
// // decoding loop:
// while (...) {
// ...
//
// llama_decode(ctx, batch);
//
// // sample from the logits of the last token in the batch
// const llama_token id = llama_sampler_sample(smpl, ctx, -1);
//
// // accepting the token updates the internal state of certain samplers (e.g. grammar, repetition, etc.)
// llama_sampler_accept(smpl, id);
// ...
// }
//
// llama_sampler_free(smpl);
//
// TODO: In the future, llama_sampler will be utilized to offload the sampling to the backends (e.g. GPU).
// TODO: in the future, the entire sampling API that uses llama_model should start using llama_vocab
//
/// Initialize a llama_grammar.
///
/// @param rules The rule elements of the grammar to initialize.
/// @param n_rules The number of rules.
/// @param start_rule_index The index of the root rule (the starting point of the grammar).
/// @return The initialized llama_grammar or nullptr if initialization failed.
LLAMA_API struct llama_grammar * llama_grammar_init(
const llama_grammar_element ** rules,
size_t n_rules,
size_t start_rule_index);
typedef void * llama_sampler_context_t;
LLAMA_API void llama_grammar_free(struct llama_grammar * grammar);
// user code can implement the interface below in order to create custom llama_sampler
struct llama_sampler_i {
const char * (*name) (const struct llama_sampler * smpl); // can be NULL
void (*accept)( struct llama_sampler * smpl, llama_token token); // can be NULL
void (*apply) ( struct llama_sampler * smpl, llama_token_data_array * cur_p); // required
void (*reset) ( struct llama_sampler * smpl); // can be NULL
struct llama_sampler * (*clone) (const struct llama_sampler * smpl); // can be NULL if ctx is NULL
void (*free) ( struct llama_sampler * smpl); // can be NULL if ctx is NULL
LLAMA_API struct llama_grammar * llama_grammar_copy(const struct llama_grammar * grammar);
// TODO: API for internal libllama usage for appending the sampling to an existing ggml_cgraph
//void (*apply_ggml) (struct llama_sampler * smpl, ...);
};
/// @details Apply constraints from grammar
LLAMA_API void llama_grammar_sample(
const struct llama_grammar * grammar,
const struct llama_context * ctx,
llama_token_data_array * candidates);
LLAMA_API DEPRECATED(void llama_sample_grammar(
struct llama_context * ctx,
llama_token_data_array * candidates,
const struct llama_grammar * grammar),
"use llama_grammar_sample instead");
struct llama_sampler {
struct llama_sampler_i * iface;
llama_sampler_context_t ctx;
};
/// @details Accepts the sampled token into the grammar
LLAMA_API void llama_grammar_accept_token(
struct llama_grammar * grammar,
struct llama_context * ctx,
llama_token token);
// mirror of llama_sampler_i:
LLAMA_API const char * llama_sampler_name (const struct llama_sampler * smpl);
LLAMA_API void llama_sampler_accept( struct llama_sampler * smpl, llama_token token);
LLAMA_API void llama_sampler_apply ( struct llama_sampler * smpl, llama_token_data_array * cur_p);
LLAMA_API void llama_sampler_reset ( struct llama_sampler * smpl);
LLAMA_API struct llama_sampler * llama_sampler_clone (const struct llama_sampler * smpl);
// important: do not free if the sampler has been added to a llama_sampler_chain (via llama_sampler_chain_add)
LLAMA_API void llama_sampler_free ( struct llama_sampler * smpl);
//
// Sampling functions
//
// llama_sampler_chain
// a type of llama_sampler that can chain multiple samplers one after another
// Sets the current rng seed.
LLAMA_API void llama_set_rng_seed(struct llama_context * ctx, uint32_t seed);
LLAMA_API struct llama_sampler * llama_sampler_chain_init(struct llama_sampler_chain_params params);
/// @details Repetition penalty described in CTRL academic paper https://arxiv.org/abs/1909.05858, with negative logit fix.
/// @details Frequency and presence penalties described in OpenAI API https://platform.openai.com/docs/api-reference/parameter-details.
LLAMA_API void llama_sample_repetition_penalties(
struct llama_context * ctx,
llama_token_data_array * candidates,
const llama_token * last_tokens,
size_t penalty_last_n,
float penalty_repeat,
float penalty_freq,
float penalty_present);
// important: takes ownership of the sampler object and will free it when llama_sampler_free is called
LLAMA_API void llama_sampler_chain_add( struct llama_sampler * chain, struct llama_sampler * smpl);
LLAMA_API struct llama_sampler * llama_sampler_chain_get(const struct llama_sampler * chain, int32_t i);
LLAMA_API int llama_sampler_chain_n (const struct llama_sampler * chain);
/// @details Apply classifier-free guidance to the logits as described in academic paper "Stay on topic with Classifier-Free Guidance" https://arxiv.org/abs/2306.17806
/// @param logits Logits extracted from the original generation context.
/// @param logits_guidance Logits extracted from a separate context from the same model. Other than a negative prompt at the beginning, it should have all generated and user input tokens copied from the main context.
/// @param scale Guidance strength. 1.0f means no guidance. Higher values mean stronger guidance.
LLAMA_API void llama_sample_apply_guidance(
struct llama_context * ctx,
float * logits,
float * logits_guidance,
float scale);
// after removing a sampler, the chain will no longer own it, and it will not be freed when the chain is freed
LLAMA_API struct llama_sampler * llama_sampler_chain_remove( struct llama_sampler * chain, int32_t i);
// available samplers:
LLAMA_API struct llama_sampler * llama_sampler_init_greedy (void);
LLAMA_API struct llama_sampler * llama_sampler_init_dist (uint32_t seed);
/// @details Sorts candidate tokens by their logits in descending order and calculate probabilities based on logits.
LLAMA_API void llama_sample_softmax(
struct llama_context * ctx,
llama_token_data_array * candidates);
/// NOTE: Avoid using on the full vocabulary as the sorting can become slow. For example, apply top-k or top-p sampling first.
LLAMA_API struct llama_sampler * llama_sampler_init_softmax (void);
/// @details Top-K sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751
LLAMA_API void llama_sample_top_k(
struct llama_context * ctx,
llama_token_data_array * candidates,
int32_t k,
size_t min_keep);
LLAMA_API struct llama_sampler * llama_sampler_init_top_k (int32_t k);
/// @details Nucleus sampling described in academic paper "The Curious Case of Neural Text Degeneration" https://arxiv.org/abs/1904.09751
LLAMA_API void llama_sample_top_p(
struct llama_context * ctx,
llama_token_data_array * candidates,
float p,
size_t min_keep);
LLAMA_API struct llama_sampler * llama_sampler_init_top_p (float p, size_t min_keep);
/// @details Minimum P sampling as described in https://github.com/ggerganov/llama.cpp/pull/3841
LLAMA_API void llama_sample_min_p(
struct llama_context * ctx,
llama_token_data_array * candidates,
float p,
size_t min_keep);
LLAMA_API struct llama_sampler * llama_sampler_init_min_p (float p, size_t min_keep);
/// @details Tail Free Sampling described in https://www.trentonbricken.com/Tail-Free-Sampling/.
LLAMA_API void llama_sample_tail_free(
struct llama_context * ctx,
llama_token_data_array * candidates,
float z,
size_t min_keep);
LLAMA_API struct llama_sampler * llama_sampler_init_tail_free (float z, size_t min_keep);
/// @details Locally Typical Sampling implementation described in the paper https://arxiv.org/abs/2202.00666.
LLAMA_API void llama_sample_typical(
struct llama_context * ctx,
llama_token_data_array * candidates,
float p,
size_t min_keep);
LLAMA_API struct llama_sampler * llama_sampler_init_typical (float p, size_t min_keep);
LLAMA_API struct llama_sampler * llama_sampler_init_temp (float t);
/// @details Dynamic temperature implementation described in the paper https://arxiv.org/abs/2309.02772.
LLAMA_API void llama_sample_entropy(
struct llama_context * ctx,
llama_token_data_array * candidates_p,
float min_temp,
float max_temp,
float exponent_val);
LLAMA_API void llama_sample_temp(
struct llama_context * ctx,
llama_token_data_array * candidates,
float temp);
/// @details Dynamic temperature implementation (a.k.a. entropy) described in the paper https://arxiv.org/abs/2309.02772.
LLAMA_API struct llama_sampler * llama_sampler_init_temp_ext (float t, float delta, float exponent);
/// @details Mirostat 1.0 algorithm described in the paper https://arxiv.org/abs/2007.14966. Uses tokens instead of words.
/// @param candidates A vector of `llama_token_data` containing the candidate tokens, their probabilities (p), and log-odds (logit) for the current position in the generated text.
@ -1121,36 +1094,62 @@ extern "C" {
/// @param eta The learning rate used to update `mu` based on the error between the target and observed surprisal of the sampled word. A larger learning rate will cause `mu` to be updated more quickly, while a smaller learning rate will result in slower updates.
/// @param m The number of tokens considered in the estimation of `s_hat`. This is an arbitrary value that is used to calculate `s_hat`, which in turn helps to calculate the value of `k`. In the paper, they use `m = 100`, but you can experiment with different values to see how it affects the performance of the algorithm.
/// @param mu Maximum cross-entropy. This value is initialized to be twice the target cross-entropy (`2 * tau`) and is updated in the algorithm based on the error between the target and observed surprisal.
LLAMA_API llama_token llama_sample_token_mirostat(
struct llama_context * ctx,
llama_token_data_array * candidates,
float tau,
float eta,
int32_t m,
float * mu);
LLAMA_API struct llama_sampler * llama_sampler_init_mirostat(
int32_t n_vocab,
uint32_t seed,
float tau,
float eta,
int32_t m);
/// @details Mirostat 2.0 algorithm described in the paper https://arxiv.org/abs/2007.14966. Uses tokens instead of words.
/// @param candidates A vector of `llama_token_data` containing the candidate tokens, their probabilities (p), and log-odds (logit) for the current position in the generated text.
/// @param tau The target cross-entropy (or surprise) value you want to achieve for the generated text. A higher value corresponds to more surprising or less predictable text, while a lower value corresponds to less surprising or more predictable text.
/// @param eta The learning rate used to update `mu` based on the error between the target and observed surprisal of the sampled word. A larger learning rate will cause `mu` to be updated more quickly, while a smaller learning rate will result in slower updates.
/// @param mu Maximum cross-entropy. This value is initialized to be twice the target cross-entropy (`2 * tau`) and is updated in the algorithm based on the error between the target and observed surprisal.
LLAMA_API llama_token llama_sample_token_mirostat_v2(
struct llama_context * ctx,
llama_token_data_array * candidates,
float tau,
float eta,
float * mu);
LLAMA_API struct llama_sampler * llama_sampler_init_mirostat_v2(
uint32_t seed,
float tau,
float eta);
/// @details Selects the token with the highest probability.
/// Does not compute the token probabilities. Use llama_sample_softmax() instead.
LLAMA_API llama_token llama_sample_token_greedy(
struct llama_context * ctx,
llama_token_data_array * candidates);
LLAMA_API struct llama_sampler * llama_sampler_init_grammar(
const struct llama_model * model,
const char * grammar_str,
const char * grammar_root);
/// @details Randomly selects a token from the candidates based on their probabilities using the RNG of ctx.
LLAMA_API llama_token llama_sample_token(
struct llama_context * ctx,
llama_token_data_array * candidates);
LLAMA_API struct llama_sampler * llama_sampler_init_penalties(
int32_t n_vocab, // llama_n_vocab()
llama_token special_eos_id, // llama_token_eos()
llama_token linefeed_id, // llama_token_nl()
int32_t penalty_last_n, // last n tokens to penalize (0 = disable penalty, -1 = context size)
float penalty_repeat, // 1.0 = disabled
float penalty_freq, // 0.0 = disabled
float penalty_present, // 0.0 = disabled
bool penalize_nl, // consider newlines as a repeatable token
bool ignore_eos); // ignore the end-of-sequence token
LLAMA_API struct llama_sampler * llama_sampler_init_logit_bias(
int32_t n_vocab,
int32_t n_logit_bias,
const llama_logit_bias * logit_bias);
// Returns the seed used by the sampler if applicable, LLAMA_DEFAULT_SEED otherwise
LLAMA_API uint32_t llama_sampler_get_seed(const struct llama_sampler * smpl);
/// @details Sample and accept a token from the idx-th output of the last evaluation
//
// Shorthand for:
// const auto * logits = llama_get_logits_ith(ctx, idx);
// llama_token_data_array cur_p = { ... init from logits ... };
// llama_sampler_apply(smpl, &cur_p);
// auto token = cur_p.data[cur_p.selected].id;
// llama_sampler_accept(smpl, token);
// return token;
// Returns the sampled token
LLAMA_API llama_token llama_sampler_sample(struct llama_sampler * smpl, struct llama_context * ctx, int32_t idx);
// TODO: extend in the future
//LLAMA_API void llama_decode_with_sampler(struct llama_context * ctx, struct llama_sampler * smpl, struct llama_batch batch, ...);
//
// Model split
@ -1166,12 +1165,6 @@ extern "C" {
// Returns the split_prefix length.
LLAMA_API int llama_split_prefix(char * split_prefix, size_t maxlen, const char * split_path, int split_no, int split_count);
// Performance information
LLAMA_API struct llama_timings llama_get_timings(struct llama_context * ctx);
LLAMA_API void llama_print_timings(struct llama_context * ctx);
LLAMA_API void llama_reset_timings(struct llama_context * ctx);
// Print system information
LLAMA_API const char * llama_print_system_info(void);
@ -1179,65 +1172,41 @@ extern "C" {
// If this is not called, or NULL is supplied, everything is output on stderr.
LLAMA_API void llama_log_set(ggml_log_callback log_callback, void * user_data);
LLAMA_API void llama_dump_timing_info_yaml(FILE * stream, const struct llama_context * ctx);
//
// Performance utils
//
// NOTE: Used by llama.cpp examples, avoid using in third-party apps. Instead, do your own performance measurements.
//
struct llama_perf_context_data {
double t_start_ms;
double t_load_ms;
double t_p_eval_ms;
double t_eval_ms;
int32_t n_p_eval;
int32_t n_eval;
};
struct llama_perf_sampler_data {
double t_sample_ms;
int32_t n_sample;
};
LLAMA_API struct llama_perf_context_data llama_perf_context (const struct llama_context * ctx);
LLAMA_API void llama_perf_context_print(const struct llama_context * ctx);
LLAMA_API void llama_perf_context_reset( struct llama_context * ctx);
// NOTE: the following work only with samplers constructed via llama_sampler_chain_init
LLAMA_API struct llama_perf_sampler_data llama_perf_sampler (const struct llama_sampler * chain);
LLAMA_API void llama_perf_sampler_print(const struct llama_sampler * chain);
LLAMA_API void llama_perf_sampler_reset( struct llama_sampler * chain);
LLAMA_API void llama_perf_dump_yaml(FILE * stream, const struct llama_context * ctx);
#ifdef __cplusplus
}
#endif
// Internal API to be implemented by llama.cpp and used by tests/benchmarks only
#ifdef LLAMA_API_INTERNAL
#include <random>
#include <string>
#include <vector>
struct ggml_tensor;
const std::vector<std::pair<std::string, struct ggml_tensor *>> & llama_internal_get_tensor_map(
struct llama_context * ctx
);
struct llama_partial_utf8 {
uint32_t value; // bit value so far (unshifted)
int n_remain; // num bytes remaining; -1 indicates invalid sequence
};
struct llama_grammar_candidate {
size_t index;
const uint32_t * code_points;
llama_partial_utf8 partial_utf8;
};
using llama_grammar_rule = std::vector< llama_grammar_element>;
using llama_grammar_stack = std::vector<const llama_grammar_element *>;
using llama_grammar_rules = std::vector<llama_grammar_rule>;
using llama_grammar_stacks = std::vector<llama_grammar_stack>;
using llama_grammar_candidates = std::vector<llama_grammar_candidate>;
const llama_grammar_rules & llama_grammar_get_rules (const struct llama_grammar * grammar);
llama_grammar_stacks & llama_grammar_get_stacks( struct llama_grammar * grammar);
void llama_grammar_accept(
const llama_grammar_rules & rules,
const llama_grammar_stacks & stacks,
const uint32_t chr,
llama_grammar_stacks & new_stacks);
std::vector<llama_grammar_candidate> llama_grammar_reject_candidates_for_stack(
const llama_grammar_rules & rules,
const llama_grammar_stack & stack,
const llama_grammar_candidates & candidates);
std::pair<std::vector<uint32_t>, llama_partial_utf8> decode_utf8(
const std::string & src,
llama_partial_utf8 partial_start);
// Randomly selects a token from the candidates based on their probabilities using given std::mt19937.
// This is a temporary workaround in order to fix race conditions when sampling with multiple sequences.
llama_token llama_sample_token_with_rng(struct llama_context * ctx, llama_token_data_array * candidates, std::mt19937 & rng);
#endif // LLAMA_API_INTERNAL
#endif // LLAMA_H

72
examples/talk-llama/talk-llama.cpp
View File

@ -314,7 +314,6 @@ int main(int argc, char ** argv) {
// tune these to your liking
lcparams.n_ctx = 2048;
lcparams.seed = 1;
lcparams.n_threads = params.n_threads;
lcparams.flash_attn = params.flash_attn;
@ -402,6 +401,26 @@ int main(int argc, char ** argv) {
llama_batch batch = llama_batch_init(llama_n_ctx(ctx_llama), 0, 1);
// init sampler
const float top_k = 5;
const float top_p = 0.80f;
const float temp = 0.30f;
const int seed = 0;
auto sparams = llama_sampler_chain_default_params();
llama_sampler * smpl = llama_sampler_chain_init(sparams);
if (temp > 0.0f) {
llama_sampler_chain_add(smpl, llama_sampler_init_top_k(top_k));
llama_sampler_chain_add(smpl, llama_sampler_init_top_p(top_p, 1));
llama_sampler_chain_add(smpl, llama_sampler_init_temp (temp));
llama_sampler_chain_add(smpl, llama_sampler_init_dist (seed));
} else {
llama_sampler_chain_add(smpl, llama_sampler_init_greedy());
}
// init session
std::string path_session = params.path_session;
std::vector<llama_token> session_tokens;
@ -700,54 +719,13 @@ int main(int argc, char ** argv) {
{
// out of user input, sample next token
const float top_k = 5;
const float top_p = 0.80f;
const float temp = 0.30f;
const float repeat_penalty = 1.1764f;
const int repeat_last_n = 256;
if (!path_session.empty() && need_to_save_session) {
need_to_save_session = false;
llama_state_save_file(ctx_llama, path_session.c_str(), session_tokens.data(), session_tokens.size());
}
llama_token id = 0;
{
auto logits = llama_get_logits(ctx_llama);
auto n_vocab = llama_n_vocab(model_llama);
logits[llama_token_eos(model_llama)] = 0;
std::vector<llama_token_data> candidates;
candidates.reserve(n_vocab);
for (llama_token token_id = 0; token_id < n_vocab; token_id++) {
candidates.emplace_back(llama_token_data{token_id, logits[token_id], 0.0f});
}
llama_token_data_array candidates_p = { candidates.data(), candidates.size(), false };
// apply repeat penalty
const float nl_logit = logits[llama_token_nl(model_llama)];
llama_sample_repetition_penalties(ctx_llama, &candidates_p,
embd_inp.data() + std::max(0, n_past - repeat_last_n),
repeat_last_n, repeat_penalty, 0.0, 0.0f);
logits[llama_token_nl(model_llama)] = nl_logit;
if (temp <= 0) {
// Greedy sampling
id = llama_sample_token_greedy(ctx_llama, &candidates_p);
} else {
// Temperature sampling
llama_sample_top_k(ctx_llama, &candidates_p, top_k, 1);
llama_sample_top_p(ctx_llama, &candidates_p, top_p, 1);
llama_sample_temp (ctx_llama, &candidates_p, temp);
id = llama_sample_token(ctx_llama, &candidates_p);
}
}
const llama_token id = llama_sampler_sample(smpl, ctx_llama, -1);
if (id != llama_token_eos(model_llama)) {
// add it to the context
@ -797,8 +775,14 @@ int main(int argc, char ** argv) {
whisper_print_timings(ctx_wsp);
whisper_free(ctx_wsp);
llama_print_timings(ctx_llama);
llama_perf_sampler_print(smpl);
llama_perf_context_print(ctx_llama);
llama_sampler_free(smpl);
llama_batch_free(batch);
llama_free(ctx_llama);
llama_backend_free();
return 0;
}

1
examples/talk-llama/unicode.cpp
View File

@ -5,6 +5,7 @@
#include "unicode.h"
#include "unicode-data.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstdint>

4
src/whisper.cpp
View File

@ -177,7 +177,7 @@ static bool ggml_graph_compute_helper(
int n_threads,
ggml_abort_callback abort_callback,
void * abort_callback_data) {
struct ggml_cplan plan = ggml_graph_plan(graph, n_threads);
struct ggml_cplan plan = ggml_graph_plan(graph, n_threads, nullptr);
plan.abort_callback = abort_callback;
plan.abort_callback_data = abort_callback_data;
@ -2894,7 +2894,7 @@ static bool whisper_decode_internal(
ggml_backend_tensor_set(KQ_mask, wstate.inp_mask.data(), 0, ggml_nelements(KQ_mask)*sizeof(float));
}
logits = gf->nodes[gf->n_nodes - 1];
logits = ggml_graph_node(gf, -1);
if (!ggml_graph_compute_helper(sched, gf, n_threads)) {
return false;