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ggml : reading the runtime sve config of the cpu #8382

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ggml : reading the runtime sve config of the cpu #8382

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6 changes: 5 additions & 1 deletion ggml/src/ggml.c
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,10 @@
#include <unistd.h>
#endif

#if defined(__ARM_FEATURE_SVE)
#include <sys/prctl.h>
#endif

#ifdef __ARM_FEATURE_MATMUL_INT8
#undef GGML_USE_LLAMAFILE
#endif
Expand Down Expand Up @@ -21760,7 +21764,7 @@ int ggml_cpu_has_neon(void) {
int ggml_cpu_has_sve(void) {
#if defined(__ARM_FEATURE_SVE)
// TODO: Currently, SVE 256 bit is only supported.
GGML_ASSERT(svcntb() == QK8_0);
GGML_ASSERT((PR_SVE_VL_LEN_MASK & prctl(PR_SVE_GET_VL)) == QK8_0);
return 1;
#else
return 0;
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