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ggml : reading the runtime sve config of the cpu (llama/8709)

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* ggml : reading the runtime sve config of the cpu

* change to one time init to prevent performance drop

* prefix variable to avoid possible conflicts

* revert xxhash fix and add brackets

---------

Co-authored-by: domke <673751-domke@users.noreply.gitlab.com>
This commit is contained in:
jdomke
2024-08-04 01:34:41 +09:00
committed by Georgi Gerganov
parent 6cb38c3673
commit a902fb4ab2
5 changed files with 30 additions and 16 deletions
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9
ggml/src/ggml.c
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@ -37,6 +37,9 @@
#include <unistd.h>
#endif
#if defined(__ARM_FEATURE_SVE)
int ggml_sve_cnt_b = 0;
#endif
#if defined(__ARM_FEATURE_SVE) || defined(__ARM_FEATURE_MATMUL_INT8)
#undef GGML_USE_LLAMAFILE
#endif
@ -3561,6 +3564,12 @@ struct ggml_context * ggml_init(struct ggml_init_params params) {
GGML_ASSERT_ALIGNED(ctx->mem_buffer);
#if defined(__ARM_FEATURE_SVE)
if (!ggml_sve_cnt_b) {
ggml_sve_cnt_b = PR_SVE_VL_LEN_MASK & prctl(PR_SVE_GET_VL);
}
#endif
GGML_PRINT_DEBUG("%s: context initialized\n", __func__);
ggml_critical_section_end();