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gq : add amax based method 3

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gq
Georgi Gerganov 2 years ago
parent 0a7debb7bf
commit bf709e45de
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GPG Key ID: 449E073F9DC10735
1 changed files with 325 additions and 13 deletions
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tests/test-mul-mat2.c
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@ -78,6 +78,21 @@ void mul_mat_f32_naive(
// method 1
//
static inline int quantize_1_blocks_per_row(int k) {
return k/QK;
}
static inline int quantize_1_quants_per_block() {
return QK/gq_t_bits;
}
static inline int quantize_1_row_size(int k) {
const int nb = quantize_1_blocks_per_row(k);
const int nq = quantize_1_quants_per_block();
return nb*(2*sizeof(gq_scale_t) + nq*QB*sizeof(gq_quant_t));
}
void quantize_1(const float * src, void * dst, int n, int k) {
char * p0 = dst;
@ -331,7 +346,7 @@ void quantize_2_row(const float * restrict src, void * restrict dst, int k) {
v2 = vmulq_f32(v2, idv);
v3 = vmulq_f32(v3, idv);
#if 0
#if 1
v0[0] += frand(); v0[1] += frand(); v0[2] += frand(); v0[3] += frand();
v1[0] += frand(); v1[1] += frand(); v1[2] += frand(); v1[3] += frand();
v2[0] += frand(); v2[1] += frand(); v2[2] += frand(); v2[3] += frand();
@ -537,34 +552,322 @@ void mul_mat_gq_2(
}
}
//
// method 3
//
static inline int quantize_3_blocks_per_row(int k) {
return k/QK;
}
static inline int quantize_3_quants_per_block() {
return QK/gq_t_bits;
}
static inline int quantize_3_row_size(int k) {
const int nb = quantize_3_blocks_per_row(k);
const int nq = quantize_3_quants_per_block();
return nb*(sizeof(gq_scale_t) + nq*QB*sizeof(gq_quant_t));
}
void quantize_3_row(const float * restrict src, void * restrict dst, int k) {
assert(k % QK == 0);
const int nb = quantize_3_blocks_per_row(k);
const int nq = quantize_3_quants_per_block();
gq_scale_t * restrict pd = (gq_scale_t *) (dst);
gq_quant_t * restrict pb = (gq_quant_t *) (pd + nb);
gq_quant_t pp[QB];
static const int32_t sh[32] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
};
for (int i = 0; i < nb; i++) {
float amax = 0.0f; // abs max
#ifdef __ARM_NEON
{
// min / max
//float32x4_t minv = vdupq_n_f32(FLT_MAX);
//float32x4_t maxv = vdupq_n_f32(-FLT_MAX);
//for (int l = 0; l < QK; l += 4) {
// float32x4_t v = vld1q_f32(src + i*QK + l);
// minv = vminq_f32(minv, v);
// maxv = vmaxq_f32(maxv, v);
//}
//float32x2_t minv32 = vpmin_f32(vget_low_f32(minv), vget_high_f32(minv));
//float32x2_t maxv32 = vpmax_f32(vget_low_f32(maxv), vget_high_f32(maxv));
//min = MIN(vget_lane_f32(minv32, 0), vget_lane_f32(minv32, 1));
//max = MAX(vget_lane_f32(maxv32, 0), vget_lane_f32(maxv32, 1));
// abs max
float32x4_t amaxv = vdupq_n_f32(0.0f);
for (int l = 0; l < QK; l += 4) {
float32x4_t v = vld1q_f32(src + i*QK + l);
amaxv = vmaxq_f32(amaxv, vabsq_f32(v));
}
float32x2_t amaxv32 = vpmax_f32(vget_low_f32(amaxv), vget_high_f32(amaxv));
amax = MAX(vget_lane_f32(amaxv32, 0), vget_lane_f32(amaxv32, 1));
}
#else
{
for (int l = 0; l < QK; l++) {
const float v = src[i*QK + l];
amax = MAX(amax, fabsf(v));
}
}
#endif
const float d = amax / ((1 << (QB - 1)) - 1);
const float id = d ? 1.0/d : 0.0;
pd[i] = GGML_FP32_TO_GQ(d);
for (int s = 0; s < nq; ++s) {
memset(pp, 0, sizeof(pp));
#if 0
for (int l = 0; l < gq_t_bits; l++) {
const float v = src[i*QK + s*gq_t_bits + l];
const uint8_t q = v*id + frand();
for (int b = 0; b < QB; b++) {
pp[b] |= q & (1 << b) ? (1ULL << l) : 0;
}
}
#elif defined(__ARM_NEON)
{
uint32_t ppt[2*4*QB];
float32x4_t idv = vdupq_n_f32(id);
assert(gq_t_bits == 64);
uint32x4_t p0[QB] = { vdupq_n_u32(0) };
uint32x4_t p1[QB] = { vdupq_n_u32(0) };
for (int l = 0; l < gq_t_bits; l += 16) {
float32x4_t v0 = vld1q_f32(src + i*QK + s*gq_t_bits + l + 0);
float32x4_t v1 = vld1q_f32(src + i*QK + s*gq_t_bits + l + 4);
float32x4_t v2 = vld1q_f32(src + i*QK + s*gq_t_bits + l + 8);
float32x4_t v3 = vld1q_f32(src + i*QK + s*gq_t_bits + l + 12);
v0 = vmulq_f32(v0, idv);
v1 = vmulq_f32(v1, idv);
v2 = vmulq_f32(v2, idv);
v3 = vmulq_f32(v3, idv);
#if 1
v0[0] += frand(); v0[1] += frand(); v0[2] += frand(); v0[3] += frand();
v1[0] += frand(); v1[1] += frand(); v1[2] += frand(); v1[3] += frand();
v2[0] += frand(); v2[1] += frand(); v2[2] += frand(); v2[3] += frand();
v3[0] += frand(); v3[1] += frand(); v3[2] += frand(); v3[3] += frand();
#endif
uint32x4_t q0 = vcvtq_u32_f32(v0);
uint32x4_t q1 = vcvtq_u32_f32(v1);
uint32x4_t q2 = vcvtq_u32_f32(v2);
uint32x4_t q3 = vcvtq_u32_f32(v3);
for (int b = 0; b < QB; ++b) {
uint32x4_t m = vdupq_n_u32(1 << b);
uint32x4_t r = vdupq_n_u32(-b);
if (l < 32) {
p0[b] = vorrq_u32(p0[b], vshlq_u32(vshlq_u32(vandq_u32(q0, m), r), vld1q_s32(sh + l + 0)));
p0[b] = vorrq_u32(p0[b], vshlq_u32(vshlq_u32(vandq_u32(q1, m), r), vld1q_s32(sh + l + 4)));
p0[b] = vorrq_u32(p0[b], vshlq_u32(vshlq_u32(vandq_u32(q2, m), r), vld1q_s32(sh + l + 8)));
p0[b] = vorrq_u32(p0[b], vshlq_u32(vshlq_u32(vandq_u32(q3, m), r), vld1q_s32(sh + l + 12)));
} else {
p1[b] = vorrq_u32(p1[b], vshlq_u32(vshlq_u32(vandq_u32(q0, m), r), vld1q_s32(sh + l - 32)));
p1[b] = vorrq_u32(p1[b], vshlq_u32(vshlq_u32(vandq_u32(q1, m), r), vld1q_s32(sh + l - 28)));
p1[b] = vorrq_u32(p1[b], vshlq_u32(vshlq_u32(vandq_u32(q2, m), r), vld1q_s32(sh + l - 24)));
p1[b] = vorrq_u32(p1[b], vshlq_u32(vshlq_u32(vandq_u32(q3, m), r), vld1q_s32(sh + l - 20)));
}
}
}
vst1q_u32((uint32_t *) ppt + 0, p0[0]);
vst1q_u32((uint32_t *) ppt + 4, p1[0]);
vst1q_u32((uint32_t *) ppt + 8, p0[1]);
vst1q_u32((uint32_t *) ppt + 12, p1[1]);
vst1q_u32((uint32_t *) ppt + 16, p0[2]);
vst1q_u32((uint32_t *) ppt + 20, p1[2]);
vst1q_u32((uint32_t *) ppt + 24, p0[3]);
vst1q_u32((uint32_t *) ppt + 28, p1[3]);
pp[0] = (ppt[0] | ppt[1] | ppt[2] | ppt[3] ) | ((uint64_t) (ppt[4] | ppt[5] | ppt[6] | ppt[7]) ) << 32;
pp[1] = (ppt[8] | ppt[9] | ppt[10] | ppt[11]) | ((uint64_t) (ppt[12] | ppt[13] | ppt[14] | ppt[15])) << 32;
pp[2] = (ppt[16] | ppt[17] | ppt[18] | ppt[19]) | ((uint64_t) (ppt[20] | ppt[21] | ppt[22] | ppt[23])) << 32;
pp[3] = (ppt[24] | ppt[25] | ppt[26] | ppt[27]) | ((uint64_t) (ppt[28] | ppt[29] | ppt[30] | ppt[31])) << 32;
}
#endif
memcpy(pb + i*nq*QB + s*QB, pp, sizeof(pp));
}
}
}
// reimplementation of quantize_3 using quantize_3_row
void quantize_3(const float * restrict src, char * restrict dst, int n, int k) {
assert(k % QK == 0);
for (int j = 0; j < n; j++) {
quantize_3_row(src + j*k, dst, k);
dst = (char *) dst + quantize_3_row_size(k);
}
}
void vec_dot_gq_3(const int n, float * restrict s, const void * restrict x, const void * restrict y) {
float sumf[QB*QB];
memset(sumf, 0, sizeof(sumf));
const int nb = quantize_3_blocks_per_row(n);
const int nq = quantize_3_quants_per_block();
const gq_scale_t * restrict pd0 = (const gq_scale_t *) x;
const gq_scale_t * restrict pd1 = (const gq_scale_t *) y;
const gq_quant_t * restrict pb0 = (const gq_quant_t *) (pd0 + nb);
const gq_quant_t * restrict pb1 = (const gq_quant_t *) (pd1 + nb);
#if 1
float s0[QB];
float s1[QB];
for (int i = 0; i < nb; i++) {
const float d0 = GGML_GQ_TO_FP32(pd0[i]);
const float d1 = GGML_GQ_TO_FP32(pd1[i]);
for (int b = 0; b < QB; b++) {
s0[b] = d0*(1 << b);
s1[b] = d1*(1 << b);
}
for (int s = 0; s < nq; ++s) {
for (int q0 = 0; q0 < QB; q0++) {
const gq_quant_t mm0 = pb0[i*nq*QB + s*QB + q0];
for (int q1 = 0; q1 < QB; q1++) {
const gq_quant_t mm1 = pb1[i*nq*QB + s*QB + q1];
sumf[q0*QB + q1] += s0[q0]*s1[q1]*__builtin_popcountll(mm0 & mm1);
}
}
}
}
#else
// SIMD-ify with the assumptions:
// - nb is a multiple of 4
// - gq_scale_t is float
// - gq_quant_t is uint64_t
// - QB == 7
assert(nb % 4 == 0);
#ifdef __ARM_NEON
#else
// TODO
#endif
#endif
for (int q0 = 0; q0 < QB; q0++) {
for (int q1 = 1; q1 < QB; q1++) {
sumf[q0*QB] += sumf[q0*QB + q1];
}
}
*s = sumf[0];
for (int q0 = 1; q0 < QB; q0++) {
*s += sumf[q0*QB];
}
}
// use vec_dot_gq_3 to compute the dot product of two rows
void mul_mat_gq_3(
const void * src0,
const void * src1, // transposed
float * dst,
int m, int n, int k) {
assert(k % QK == 0);
const int nb = quantize_3_blocks_per_row(k);
const int nq = quantize_3_quants_per_block();
for (int ir0 = 0; ir0 < m; ir0++) {
for (int ir1 = 0; ir1 < n; ir1++) {
vec_dot_gq_3(k, dst + ir1, src0, src1);
src1 = (const char *) src1 + quantize_3_row_size(k);
}
src0 = (const char *) src0 + quantize_3_row_size(k);
src1 = (const char *) src1 - n*quantize_3_row_size(k);
dst = (float *) dst + n;
}
}
int main(int argc, const char ** argv) {
assert(sizeof(gq_quant_t)*8 == gq_t_bits);
int method = 0;
if (argc > 1) {
method = atoi(argv[1]);
}
float * src0 = (float *)malloc(sizeof(float)*M*K);
float * src1 = (float *)malloc(sizeof(float)*N*K);
float * dst = (float *)malloc(sizeof(float)*M*N);
for (int i = 0; i < M*K; i++) {
src0[i] = rand() / (float)RAND_MAX;
/*src0[i] = rand() / (float)RAND_MAX;*/
src0[i] = i % 3;
}
for (int i = 0; i < N*K; i++) {
src1[i] = rand() / (float)RAND_MAX;
/*src1[i] = rand() / (float)RAND_MAX;*/
src1[i] = i % 4;
}
void * src0_gq = calloc(1, quantize_2_row_size(K)*M);
void * src1_gq = calloc(1, quantize_2_row_size(K)*N);
void * src0_gq = NULL;
void * src1_gq = NULL;
const size_t sizef16 = sizeof(ggml_fp16_t)*M*K + sizeof(ggml_fp16_t)*N*K;
const size_t sizegq = quantize_2_row_size(K)*M + quantize_2_row_size(K)*N;
size_t sizegq = 0;
printf("compression: %f\n", (float)sizegq/sizef16);
{
if (method == 1) {
src0_gq = calloc(1, quantize_1_row_size(K)*M);
src1_gq = calloc(1, quantize_1_row_size(K)*N);
int method = 0;
if (argc > 1) {
method = atoi(argv[1]);
sizegq = quantize_1_row_size(K)*M + quantize_1_row_size(K)*N;
}
if (method == 2) {
src0_gq = calloc(1, quantize_2_row_size(K)*M);
src1_gq = calloc(1, quantize_2_row_size(K)*N);
sizegq = quantize_2_row_size(K)*M + quantize_2_row_size(K)*N;
}
if (method == 3) {
src0_gq = calloc(1, quantize_3_row_size(K)*M);
src1_gq = calloc(1, quantize_3_row_size(K)*N);
sizegq = quantize_3_row_size(K)*M + quantize_3_row_size(K)*N;
}
}
const size_t sizef16 = sizeof(ggml_fp16_t)*M*K + sizeof(ggml_fp16_t)*N*K;
printf("compression: %f\n", (float)sizegq/sizef16);
// convert fp32 -> gq
{
const uint64_t t_start = get_time_us();
@ -579,6 +882,11 @@ int main(int argc, const char ** argv) {
quantize_2(src1, src1_gq, N, K);
}
if (method == 3) {
quantize_3(src0, src0_gq, M, K);
quantize_3(src1, src1_gq, N, K);
}
const uint64_t t_end = get_time_us();
printf("convert time: %f ms / method = %d\n", (t_end - t_start) / 1000.0, method);
}
@ -606,6 +914,10 @@ int main(int argc, const char ** argv) {
if (method == 2) {
mul_mat_gq_2(src0_gq, src1_gq, dst, M, N, K);
}
if (method == 3) {
mul_mat_gq_3(src0_gq, src1_gq, dst, M, N, K);
}
}
for (int i = 0; i < N; i++) {
@ -625,8 +937,8 @@ int main(int argc, const char ** argv) {
free(src1);
free(dst);
free(src0_gq);
free(src1_gq);
if (src0_gq) free(src0_gq);
if (src1_gq) free(src1_gq);
return 0;
}

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