mirror of
https://github.com/mudler/LocalAI.git
synced 2024-12-18 20:27:57 +00:00
650 lines
17 KiB
Go
650 lines
17 KiB
Go
package api
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import (
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"sync"
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"github.com/donomii/go-rwkv.cpp"
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"github.com/go-skynet/LocalAI/pkg/langchain"
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model "github.com/go-skynet/LocalAI/pkg/model"
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"github.com/go-skynet/LocalAI/pkg/stablediffusion"
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"github.com/go-skynet/bloomz.cpp"
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bert "github.com/go-skynet/go-bert.cpp"
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transformers "github.com/go-skynet/go-ggml-transformers.cpp"
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llama "github.com/go-skynet/go-llama.cpp"
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gpt4all "github.com/nomic-ai/gpt4all/gpt4all-bindings/golang"
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)
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// mutex still needed, see: https://github.com/ggerganov/llama.cpp/discussions/784
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var mutexMap sync.Mutex
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var mutexes map[string]*sync.Mutex = make(map[string]*sync.Mutex)
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func defaultLLamaOpts(c Config) []llama.ModelOption {
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llamaOpts := []llama.ModelOption{}
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if c.ContextSize != 0 {
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llamaOpts = append(llamaOpts, llama.SetContext(c.ContextSize))
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}
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if c.F16 {
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llamaOpts = append(llamaOpts, llama.EnableF16Memory)
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}
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if c.Embeddings {
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llamaOpts = append(llamaOpts, llama.EnableEmbeddings)
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}
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if c.NGPULayers != 0 {
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llamaOpts = append(llamaOpts, llama.SetGPULayers(c.NGPULayers))
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}
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llamaOpts = append(llamaOpts, llama.SetMMap(c.MMap))
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llamaOpts = append(llamaOpts, llama.SetMainGPU(c.MainGPU))
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llamaOpts = append(llamaOpts, llama.SetTensorSplit(c.TensorSplit))
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if c.Batch != 0 {
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llamaOpts = append(llamaOpts, llama.SetNBatch(c.Batch))
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} else {
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llamaOpts = append(llamaOpts, llama.SetNBatch(512))
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}
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if c.NUMA {
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llamaOpts = append(llamaOpts, llama.EnableNUMA)
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}
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if c.LowVRAM {
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llamaOpts = append(llamaOpts, llama.EnabelLowVRAM)
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}
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return llamaOpts
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}
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func ImageGeneration(height, width, mode, step, seed int, positive_prompt, negative_prompt, dst string, loader *model.ModelLoader, c Config, o *Option) (func() error, error) {
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if c.Backend != model.StableDiffusionBackend {
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return nil, fmt.Errorf("endpoint only working with stablediffusion models")
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}
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inferenceModel, err := loader.BackendLoader(c.Backend, c.ImageGenerationAssets, []llama.ModelOption{}, uint32(c.Threads), o.assetsDestination)
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if err != nil {
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return nil, err
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}
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var fn func() error
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switch model := inferenceModel.(type) {
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case *stablediffusion.StableDiffusion:
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fn = func() error {
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return model.GenerateImage(height, width, mode, step, seed, positive_prompt, negative_prompt, dst)
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}
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default:
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fn = func() error {
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return fmt.Errorf("creation of images not supported by the backend")
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}
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}
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return func() error {
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// This is still needed, see: https://github.com/ggerganov/llama.cpp/discussions/784
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mutexMap.Lock()
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l, ok := mutexes[c.Backend]
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if !ok {
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m := &sync.Mutex{}
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mutexes[c.Backend] = m
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l = m
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}
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mutexMap.Unlock()
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l.Lock()
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defer l.Unlock()
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return fn()
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}, nil
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}
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func ModelEmbedding(s string, tokens []int, loader *model.ModelLoader, c Config, o *Option) (func() ([]float32, error), error) {
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if !c.Embeddings {
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return nil, fmt.Errorf("endpoint disabled for this model by API configuration")
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}
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modelFile := c.Model
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llamaOpts := defaultLLamaOpts(c)
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var inferenceModel interface{}
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var err error
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if c.Backend == "" {
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inferenceModel, err = loader.GreedyLoader(modelFile, llamaOpts, uint32(c.Threads), o.assetsDestination)
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} else {
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inferenceModel, err = loader.BackendLoader(c.Backend, modelFile, llamaOpts, uint32(c.Threads), o.assetsDestination)
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}
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if err != nil {
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return nil, err
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}
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var fn func() ([]float32, error)
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switch model := inferenceModel.(type) {
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case *llama.LLama:
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fn = func() ([]float32, error) {
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predictOptions := buildLLamaPredictOptions(c, loader.ModelPath)
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if len(tokens) > 0 {
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return model.TokenEmbeddings(tokens, predictOptions...)
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}
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return model.Embeddings(s, predictOptions...)
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}
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// bert embeddings
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case *bert.Bert:
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fn = func() ([]float32, error) {
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if len(tokens) > 0 {
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return model.TokenEmbeddings(tokens, bert.SetThreads(c.Threads))
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}
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return model.Embeddings(s, bert.SetThreads(c.Threads))
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}
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default:
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fn = func() ([]float32, error) {
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return nil, fmt.Errorf("embeddings not supported by the backend")
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}
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}
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return func() ([]float32, error) {
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// This is still needed, see: https://github.com/ggerganov/llama.cpp/discussions/784
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mutexMap.Lock()
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l, ok := mutexes[modelFile]
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if !ok {
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m := &sync.Mutex{}
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mutexes[modelFile] = m
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l = m
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}
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mutexMap.Unlock()
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l.Lock()
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defer l.Unlock()
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embeds, err := fn()
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if err != nil {
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return embeds, err
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}
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// Remove trailing 0s
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for i := len(embeds) - 1; i >= 0; i-- {
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if embeds[i] == 0.0 {
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embeds = embeds[:i]
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} else {
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break
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}
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}
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return embeds, nil
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}, nil
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}
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func buildLLamaPredictOptions(c Config, modelPath string) []llama.PredictOption {
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// Generate the prediction using the language model
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predictOptions := []llama.PredictOption{
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llama.SetTemperature(c.Temperature),
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llama.SetTopP(c.TopP),
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llama.SetTopK(c.TopK),
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llama.SetTokens(c.Maxtokens),
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llama.SetThreads(c.Threads),
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}
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if c.PromptCacheAll {
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predictOptions = append(predictOptions, llama.EnablePromptCacheAll)
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}
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if c.PromptCacheRO {
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predictOptions = append(predictOptions, llama.EnablePromptCacheRO)
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}
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predictOptions = append(predictOptions, llama.WithGrammar(c.Grammar))
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if c.PromptCachePath != "" {
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// Create parent directory
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p := filepath.Join(modelPath, c.PromptCachePath)
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os.MkdirAll(filepath.Dir(p), 0755)
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predictOptions = append(predictOptions, llama.SetPathPromptCache(p))
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}
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if c.Mirostat != 0 {
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predictOptions = append(predictOptions, llama.SetMirostat(c.Mirostat))
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}
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if c.MirostatETA != 0 {
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predictOptions = append(predictOptions, llama.SetMirostatETA(c.MirostatETA))
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}
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if c.MirostatTAU != 0 {
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predictOptions = append(predictOptions, llama.SetMirostatTAU(c.MirostatTAU))
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}
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if c.Debug {
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predictOptions = append(predictOptions, llama.Debug)
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}
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predictOptions = append(predictOptions, llama.SetStopWords(c.StopWords...))
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if c.RepeatPenalty != 0 {
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predictOptions = append(predictOptions, llama.SetPenalty(c.RepeatPenalty))
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}
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if c.Keep != 0 {
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predictOptions = append(predictOptions, llama.SetNKeep(c.Keep))
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, llama.SetBatch(c.Batch))
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}
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if c.F16 {
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predictOptions = append(predictOptions, llama.EnableF16KV)
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}
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if c.IgnoreEOS {
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predictOptions = append(predictOptions, llama.IgnoreEOS)
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, llama.SetSeed(c.Seed))
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}
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//predictOptions = append(predictOptions, llama.SetLogitBias(c.Seed))
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predictOptions = append(predictOptions, llama.SetFrequencyPenalty(c.FrequencyPenalty))
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predictOptions = append(predictOptions, llama.SetMlock(c.MMlock))
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predictOptions = append(predictOptions, llama.SetMemoryMap(c.MMap))
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predictOptions = append(predictOptions, llama.SetPredictionMainGPU(c.MainGPU))
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predictOptions = append(predictOptions, llama.SetPredictionTensorSplit(c.TensorSplit))
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predictOptions = append(predictOptions, llama.SetTailFreeSamplingZ(c.TFZ))
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predictOptions = append(predictOptions, llama.SetTypicalP(c.TypicalP))
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return predictOptions
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}
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func ModelInference(s string, loader *model.ModelLoader, c Config, o *Option, tokenCallback func(string) bool) (func() (string, error), error) {
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supportStreams := false
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modelFile := c.Model
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llamaOpts := defaultLLamaOpts(c)
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var inferenceModel interface{}
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var err error
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if c.Backend == "" {
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inferenceModel, err = loader.GreedyLoader(modelFile, llamaOpts, uint32(c.Threads), o.assetsDestination)
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} else {
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inferenceModel, err = loader.BackendLoader(c.Backend, modelFile, llamaOpts, uint32(c.Threads), o.assetsDestination)
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}
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if err != nil {
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return nil, err
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}
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var fn func() (string, error)
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switch model := inferenceModel.(type) {
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case *rwkv.RwkvState:
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supportStreams = true
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fn = func() (string, error) {
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stopWord := "\n"
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if len(c.StopWords) > 0 {
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stopWord = c.StopWords[0]
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}
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if err := model.ProcessInput(s); err != nil {
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return "", err
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}
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response := model.GenerateResponse(c.Maxtokens, stopWord, float32(c.Temperature), float32(c.TopP), tokenCallback)
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return response, nil
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}
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case *transformers.GPTNeoX:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *transformers.Replit:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *transformers.Starcoder:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *transformers.MPT:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *bloomz.Bloomz:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []bloomz.PredictOption{
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bloomz.SetTemperature(c.Temperature),
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bloomz.SetTopP(c.TopP),
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bloomz.SetTopK(c.TopK),
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bloomz.SetTokens(c.Maxtokens),
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bloomz.SetThreads(c.Threads),
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, bloomz.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *transformers.Falcon:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *transformers.GPTJ:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *transformers.Dolly:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *transformers.GPT2:
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fn = func() (string, error) {
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// Generate the prediction using the language model
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predictOptions := []transformers.PredictOption{
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transformers.SetTemperature(c.Temperature),
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transformers.SetTopP(c.TopP),
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transformers.SetTopK(c.TopK),
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transformers.SetTokens(c.Maxtokens),
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transformers.SetThreads(c.Threads),
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}
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if c.Batch != 0 {
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predictOptions = append(predictOptions, transformers.SetBatch(c.Batch))
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}
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if c.Seed != 0 {
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predictOptions = append(predictOptions, transformers.SetSeed(c.Seed))
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}
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return model.Predict(
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s,
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predictOptions...,
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)
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}
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case *gpt4all.Model:
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supportStreams = true
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fn = func() (string, error) {
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if tokenCallback != nil {
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model.SetTokenCallback(tokenCallback)
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}
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// Generate the prediction using the language model
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predictOptions := []gpt4all.PredictOption{
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gpt4all.SetTemperature(c.Temperature),
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gpt4all.SetTopP(c.TopP),
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gpt4all.SetTopK(c.TopK),
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gpt4all.SetTokens(c.Maxtokens),
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}
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|
|
if c.Batch != 0 {
|
|
predictOptions = append(predictOptions, gpt4all.SetBatch(c.Batch))
|
|
}
|
|
|
|
str, er := model.Predict(
|
|
s,
|
|
predictOptions...,
|
|
)
|
|
// Seems that if we don't free the callback explicitly we leave functions registered (that might try to send on closed channels)
|
|
// For instance otherwise the API returns: {"error":{"code":500,"message":"send on closed channel","type":""}}
|
|
// after a stream event has occurred
|
|
model.SetTokenCallback(nil)
|
|
return str, er
|
|
}
|
|
case *llama.LLama:
|
|
supportStreams = true
|
|
fn = func() (string, error) {
|
|
|
|
if tokenCallback != nil {
|
|
model.SetTokenCallback(tokenCallback)
|
|
}
|
|
|
|
predictOptions := buildLLamaPredictOptions(c, loader.ModelPath)
|
|
|
|
str, er := model.Predict(
|
|
s,
|
|
predictOptions...,
|
|
)
|
|
// Seems that if we don't free the callback explicitly we leave functions registered (that might try to send on closed channels)
|
|
// For instance otherwise the API returns: {"error":{"code":500,"message":"send on closed channel","type":""}}
|
|
// after a stream event has occurred
|
|
model.SetTokenCallback(nil)
|
|
return str, er
|
|
}
|
|
case *langchain.HuggingFace:
|
|
fn = func() (string, error) {
|
|
|
|
// Generate the prediction using the language model
|
|
predictOptions := []langchain.PredictOption{
|
|
langchain.SetModel(c.Model),
|
|
langchain.SetMaxTokens(c.Maxtokens),
|
|
langchain.SetTemperature(c.Temperature),
|
|
langchain.SetStopWords(c.StopWords),
|
|
}
|
|
|
|
pred, er := model.PredictHuggingFace(s, predictOptions...)
|
|
if er != nil {
|
|
return "", er
|
|
}
|
|
return pred.Completion, nil
|
|
}
|
|
}
|
|
|
|
return func() (string, error) {
|
|
// This is still needed, see: https://github.com/ggerganov/llama.cpp/discussions/784
|
|
mutexMap.Lock()
|
|
l, ok := mutexes[modelFile]
|
|
if !ok {
|
|
m := &sync.Mutex{}
|
|
mutexes[modelFile] = m
|
|
l = m
|
|
}
|
|
mutexMap.Unlock()
|
|
l.Lock()
|
|
defer l.Unlock()
|
|
|
|
res, err := fn()
|
|
if tokenCallback != nil && !supportStreams {
|
|
tokenCallback(res)
|
|
}
|
|
return res, err
|
|
}, nil
|
|
}
|
|
|
|
func ComputeChoices(predInput string, input *OpenAIRequest, config *Config, o *Option, loader *model.ModelLoader, cb func(string, *[]Choice), tokenCallback func(string) bool) ([]Choice, error) {
|
|
result := []Choice{}
|
|
|
|
n := input.N
|
|
|
|
if input.N == 0 {
|
|
n = 1
|
|
}
|
|
|
|
// get the model function to call for the result
|
|
predFunc, err := ModelInference(predInput, loader, *config, o, tokenCallback)
|
|
if err != nil {
|
|
return result, err
|
|
}
|
|
|
|
for i := 0; i < n; i++ {
|
|
prediction, err := predFunc()
|
|
if err != nil {
|
|
return result, err
|
|
}
|
|
|
|
prediction = Finetune(*config, predInput, prediction)
|
|
cb(prediction, &result)
|
|
|
|
//result = append(result, Choice{Text: prediction})
|
|
|
|
}
|
|
return result, err
|
|
}
|
|
|
|
var cutstrings map[string]*regexp.Regexp = make(map[string]*regexp.Regexp)
|
|
var mu sync.Mutex = sync.Mutex{}
|
|
|
|
func Finetune(config Config, input, prediction string) string {
|
|
if config.Echo {
|
|
prediction = input + prediction
|
|
}
|
|
|
|
for _, c := range config.Cutstrings {
|
|
mu.Lock()
|
|
reg, ok := cutstrings[c]
|
|
if !ok {
|
|
cutstrings[c] = regexp.MustCompile(c)
|
|
reg = cutstrings[c]
|
|
}
|
|
mu.Unlock()
|
|
prediction = reg.ReplaceAllString(prediction, "")
|
|
}
|
|
|
|
for _, c := range config.TrimSpace {
|
|
prediction = strings.TrimSpace(strings.TrimPrefix(prediction, c))
|
|
}
|
|
return prediction
|
|
|
|
}
|