happyz
/
llama.cpp
mirror of https://github.com/ggerganov/llama.cpp.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

use scalar for __ARM_FEATURE_SVE

This commit is contained in:
Xuan Son Nguyen 2025-07-09 12:16:40 +02:00
parent 4ea74b04e5
commit cd1703a3bc
1 changed files with 25 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
ggml/src/ggml-cpu/vec.h
View File

@ -355,27 +355,33 @@ inline static void ggml_vec_mad1_f32(const int n, float * y, const float s, cons
#if defined(GGML_USE_ACCELERATE)
vDSP_vsmsa(y, 1, &s, &b, y, 1, n);
#elif defined(GGML_SIMD)
// TODO: #if defined(__ARM_FEATURE_SVE)
const int np = (n & ~(GGML_F32_STEP - 1));
GGML_F32_VEC vs = GGML_F32_VEC_SET1(s);
GGML_F32_VEC vb = GGML_F32_VEC_SET1(b);
GGML_F32_VEC ay[GGML_F32_ARR];
for (int i = 0; i < np; i += GGML_F32_STEP) {
for (int j = 0; j < GGML_F32_ARR; j++) {
ay[j] = GGML_F32_VEC_LOAD(y + i + j*GGML_F32_EPR);
ay[j] = GGML_F32_VEC_FMA(ay[j], vs, vb);
GGML_F32_VEC_STORE(y + i + j*GGML_F32_EPR, ay[j]);
#if defined(__ARM_FEATURE_SVE)
// scalar ; TODO: Write SVE code
for (int i = 0; i < n; ++i) {
y[i] = y[i]*s + b;
}
}
#else
const int np = (n & ~(GGML_F32_STEP - 1));
// leftovers
for (int i = np; i < n; ++i) {
y[i] = y[i]*s + b;
}
GGML_F32_VEC vs = GGML_F32_VEC_SET1(s);
GGML_F32_VEC vb = GGML_F32_VEC_SET1(b);
GGML_F32_VEC ay[GGML_F32_ARR];
for (int i = 0; i < np; i += GGML_F32_STEP) {
for (int j = 0; j < GGML_F32_ARR; j++) {
ay[j] = GGML_F32_VEC_LOAD(y + i + j*GGML_F32_EPR);
ay[j] = GGML_F32_VEC_FMA(ay[j], vs, vb);
GGML_F32_VEC_STORE(y + i + j*GGML_F32_EPR, ay[j]);
}
}
// leftovers
for (int i = np; i < n; ++i) {
y[i] = y[i]*s + b;
}
#endif
#else
// scalar
for (int i = 0; i < n; ++i) {