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ggml: Extend feature detection to include non aarch64 Arm arch

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This commit is contained in:
Dan Johansson 2024-09-19 12:45:11 +02:00
parent ce926fe879
commit 8fd848dd30
1 changed files with 34 additions and 33 deletions
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67
ggml/src/ggml.c
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@ -39,13 +39,13 @@
#include <unistd.h>
#endif
#if defined(__aarch64__)
struct ggml_aarch64_features_type {
#if defined(__ARM_ARCH)
struct ggml_arm_arch_features_type {
int has_neon;
int has_i8mm;
int has_sve;
int sve_cnt;
} ggml_aarch64_features = {-1, -1, -1, 0};
} ggml_arm_arch_features = {-1, -1, -1, 0};
#endif
#if defined(__ARM_FEATURE_SVE) || defined(__ARM_FEATURE_MATMUL_INT8)
@ -3679,24 +3679,25 @@ static inline int ggml_up(int n, int m) {
////////////////////////////////////////////////////////////////////////////////
#if defined(__aarch64__)
#if defined(__ARM_ARCH)
#if defined(__linux__)
#if defined(__linux__) && defined(__aarch64__)
#include <sys/auxv.h>
#elif defined(__APPLE__)
#include <sys/sysctl.h>
#endif
static void ggml_init_aarch64_features(void) {
#if defined(__linux__)
static void ggml_init_arm_arch_features(void) {
#if defined(__linux__) && defined(__aarch64__)
uint32_t hwcap = getauxval(AT_HWCAP);
uint32_t hwcap2 = getauxval(AT_HWCAP2);
ggml_aarch64_features.has_neon = !!(hwcap & HWCAP_ASIMD);
ggml_aarch64_features.has_i8mm = !!(hwcap2 & HWCAP2_I8MM);
ggml_aarch64_features.has_sve = !!(hwcap & HWCAP_SVE);
ggml_arm_arch_features.has_neon = !!(hwcap & HWCAP_ASIMD);
ggml_arm_arch_features.has_i8mm = !!(hwcap2 & HWCAP2_I8MM);
ggml_arm_arch_features.has_sve = !!(hwcap & HWCAP_SVE);
#if defined(__ARM_FEATURE_SVE)
ggml_aarch64_features.sve_cnt = PR_SVE_VL_LEN_MASK & prctl(PR_SVE_GET_VL);
ggml_arm_arch_features.sve_cnt = PR_SVE_VL_LEN_MASK & prctl(PR_SVE_GET_VL);
#endif
#elif defined(__APPLE__)
int oldp = 0;
@ -3704,35 +3705,35 @@ static void ggml_init_aarch64_features(void) {
if (sysctlbyname("hw.optional.AdvSIMD", &oldp, &size, NULL, 0) != 0) {
oldp = 0;
}
ggml_aarch64_features.has_neon = oldp;
ggml_arm_arch_features.has_neon = oldp;
if (sysctlbyname("hw.optional.arm.FEAT_I8MM", &oldp, &size, NULL, 0) != 0) {
oldp = 0;
}
ggml_aarch64_features.has_i8mm = oldp;
ggml_arm_arch_features.has_i8mm = oldp;
ggml_aarch64_features.has_sve = 0;
ggml_aarch64_features.sve_cnt = 0;
ggml_arm_arch_features.has_sve = 0;
ggml_arm_arch_features.sve_cnt = 0;
#else
// Run-time CPU feature detection not implemented for this platform, fallback to compile time
#if defined(__ARM_NEON)
ggml_aarch64_features.has_neon = 1;
ggml_arm_arch_features.has_neon = 1;
#else
ggml_aarch64_features.has_neon = 0;
ggml_arm_arch_features.has_neon = 0;
#endif
#if defined(__ARM_FEATURE_MATMUL_INT8)
ggml_aarch64_features.has_i8mm = 1;
ggml_arm_arch_features.has_i8mm = 1;
#else
ggml_aarch64_features.has_i8mm = 0;
ggml_arm_arch_features.has_i8mm = 0;
#endif
#if defined(__ARM_FEATURE_SVE)
ggml_aarch64_features.has_sve = 1;
ggml_aarch64_features.sve_cnt = 16;
ggml_arm_arch_features.has_sve = 1;
ggml_arm_arch_features.sve_cnt = 16;
#else
ggml_aarch64_features.has_sve = 0;
ggml_aarch64_features.sve_cnt = 0;
ggml_arm_arch_features.has_sve = 0;
ggml_arm_arch_features.sve_cnt = 0;
#endif
#endif
}
@ -3788,8 +3789,8 @@ struct ggml_context * ggml_init(struct ggml_init_params params) {
GGML_PRINT_DEBUG("%s: g_state initialized in %f ms\n", __func__, (t_end - t_start)/1000.0f);
}
#if defined(__aarch64__)
ggml_init_aarch64_features();
#if defined(__ARM_ARCH)
ggml_init_arm_arch_features();
#endif
is_first_call = false;
@ -23641,16 +23642,16 @@ int ggml_cpu_has_fma(void) {
}
int ggml_cpu_has_neon(void) {
#if defined(__aarch64__)
return ggml_aarch64_features.has_neon;
#if defined(__ARM_ARCH)
return ggml_arm_arch_features.has_neon;
#else
return 0;
#endif
}
int ggml_cpu_has_sve(void) {
#if defined(__aarch64__)
return ggml_aarch64_features.has_sve;
#if defined(__ARM_ARCH)
return ggml_arm_arch_features.has_sve;
#else
return 0;
#endif
@ -23797,16 +23798,16 @@ int ggml_cpu_has_vsx(void) {
}
int ggml_cpu_has_matmul_int8(void) {
#if defined(__aarch64__)
return ggml_aarch64_features.has_i8mm;
#if defined(__ARM_ARCH)
return ggml_arm_arch_features.has_i8mm;
#else
return 0;
#endif
}
int ggml_cpu_get_sve_cnt(void) {
#if defined(__aarch64__)
return ggml_aarch64_features.sve_cnt;
#if defined(__ARM_ARCH)
return ggml_arm_arch_features.sve_cnt;
#else
return 0;
#endif