diff options
| -rw-r--r-- | ggml-cuda.cu | 72 |
1 files changed, 59 insertions, 13 deletions
diff --git a/ggml-cuda.cu b/ggml-cuda.cu index f07bdc7..2c5d157 100644 --- a/ggml-cuda.cu +++ b/ggml-cuda.cu @@ -935,12 +935,18 @@ static __global__ void dequantize_mul_mat_vec_q4_k(const void * __restrict__ vx, uint16_t aux[4]; const uint8_t * sc = (const uint8_t *)aux; +#if K_QUANTS_PER_ITERATION == 2 + uint32_t q32[4]; + const uint8_t * q4 = (const uint8_t *)q32; +#else + uint16_t q16[4]; + const uint8_t * q4 = (const uint8_t *)q16; +#endif + float tmp = 0; // partial sum for thread in warp for (int i = ix; i < num_blocks_per_row; i += K_QUANTS_PER_ITERATION) { - const uint8_t * q1 = x[i].qs + q_offset; - const uint8_t * q2 = q1 + 64; const float * y1 = yy + i*QK_K + y_offset; const float * y2 = y1 + 128; @@ -953,14 +959,41 @@ static __global__ void dequantize_mul_mat_vec_q4_k(const void * __restrict__ vx, aux[2] = ((a[im+4] >> 0) & kmask2) | ((a[im+0] & kmask3) >> 2); aux[3] = ((a[im+4] >> 4) & kmask2) | ((a[im+2] & kmask3) >> 2); +#if K_QUANTS_PER_ITERATION == 2 + const uint32_t * q1 = (const uint32_t *)(x[i].qs + q_offset); + const uint32_t * q2 = q1 + 16; + + q32[0] = q1[0] & 0x0f0f0f0f; + q32[1] = q1[0] & 0xf0f0f0f0; + q32[2] = q2[0] & 0x0f0f0f0f; + q32[3] = q2[0] & 0xf0f0f0f0; + float4 s = {0.f, 0.f, 0.f, 0.f}; float smin = 0; - for (int l = 0; l < n; ++l) { - s.x += y1[l] * (q1[l] & 0xF); s.y += y1[l+32] * (q1[l] >> 4); - s.z += y2[l] * (q2[l] & 0xF); s.w += y2[l+32] * (q2[l] >> 4); + for (int l = 0; l < 4; ++l) { + s.x += y1[l] * q4[l+0]; s.y += y1[l+32] * q4[l+ 4]; + s.z += y2[l] * q4[l+8]; s.w += y2[l+32] * q4[l+12]; smin += y1[l] * sc[2] + y1[l+32] * sc[3] + y2[l] * sc[6] + y2[l+32] * sc[7]; } - tmp += dall * (s.x * sc[0] + s.y * sc[1] + s.z * sc[4] + s.w * sc[5]) - dmin * smin; + tmp += dall * (s.x * sc[0] + s.y * sc[1] * 1.f/16.f + s.z * sc[4] + s.w * sc[5] * 1.f/16.f) - dmin * smin; +#else + const uint16_t * q1 = (const uint16_t *)(x[i].qs + q_offset); + const uint16_t * q2 = q1 + 32; + + q16[0] = q1[0] & 0x0f0f; + q16[1] = q1[0] & 0xf0f0; + q16[2] = q2[0] & 0x0f0f; + q16[3] = q2[0] & 0xf0f0; + + float4 s = {0.f, 0.f, 0.f, 0.f}; + float smin = 0; + for (int l = 0; l < 2; ++l) { + s.x += y1[l] * q4[l+0]; s.y += y1[l+32] * q4[l+2]; + s.z += y2[l] * q4[l+4]; s.w += y2[l+32] * q4[l+6]; + smin += y1[l] * sc[2] + y1[l+32] * sc[3] + y2[l] * sc[6] + y2[l+32] * sc[7]; + } + tmp += dall * (s.x * sc[0] + s.y * sc[1] * 1.f/16.f + s.z * sc[4] + s.w * sc[5] * 1.f/16.f) - dmin * smin; +#endif } #else @@ -1521,7 +1554,7 @@ static __device__ __forceinline__ float vec_dot_q4_K_q8_1( #if __CUDA_ARCH__ >= MIN_CC_DP4A // lowest compute capability for integer intrinsics const block_q4_K * bq4_K = (const block_q4_K *) vbq; - const int bq8_offset = QR4_K * (iqs / QI8_1); + const int bq8_offset = QR4_K * (iqs / QI8_1); // 0, 2, 4, 6 float sumf_d = 0.0f; float sumf_m = 0.0f; @@ -1531,11 +1564,20 @@ static __device__ __forceinline__ float vec_dot_q4_K_q8_1( const int v = *((int *) &bq4_K->qs[sizeof(int) * iqs]); - for (int i = 0; i < QR4_K; ++i) { - const int isc = bq8_offset + i; + const uint16_t * scales = (const uint16_t *)bq4_K->scales; + uint16_t aux[2]; + const int j = bq8_offset/2; + if (j < 2) { + aux[0] = scales[j+0] & 0x3f3f; + aux[1] = scales[j+2] & 0x3f3f; + } else { + aux[0] = ((scales[j+2] >> 0) & 0x0f0f) | ((scales[j-2] & 0xc0c0) >> 2); + aux[1] = ((scales[j+2] >> 4) & 0x0f0f) | ((scales[j-0] & 0xc0c0) >> 2); + } + const uint8_t * sc = (const uint8_t *)aux; + const uint8_t * m = sc + 2; - uint8_t sc, m; - get_scale_min_k4(isc, bq4_K->scales, sc, m); + for (int i = 0; i < QR4_K; ++i) { const block_q8_1 * bq8i = bq8_1 + bq8_offset + i; const int ui = *((int*) &bq8i->qs[sizeof(int) * (iqs % QI8_1)]); @@ -1543,8 +1585,8 @@ static __device__ __forceinline__ float vec_dot_q4_K_q8_1( const int vi = (v >> (4*i)) & 0x0F0F0F0F; - sumf_d += d8i * (__dp4a(vi, ui, 0) * sc); // SIMD dot product - sumf_m += d8i * (__dp4a(0x01010101, ui, 0) * m); // multiply constant part of q4_K with sum of q8_1 values + sumf_d += d8i * (__dp4a(vi, ui, 0) * sc[i]); // SIMD dot product + sumf_m += d8i * (__dp4a(0x01010101, ui, 0) * m[i]); // multiply constant part of q4_K with sum of q8_1 values } return d*sumf_d - dmin*sumf_m; @@ -2497,7 +2539,9 @@ static size_t g_scratch_offset = 0; static int g_device_count = -1; static int g_main_device = 0; +#ifndef GGML_CUDA_FORCE_DMMV static int g_compute_capabilities[GGML_CUDA_MAX_DEVICES]; +#endif static float g_tensor_split[GGML_CUDA_MAX_DEVICES] = {0}; static cublasHandle_t g_cublas_handles[GGML_CUDA_MAX_DEVICES] = {nullptr}; @@ -2520,7 +2564,9 @@ void ggml_init_cublas() { g_tensor_split[id] = total_vram; total_vram += prop.totalGlobalMem; +#ifndef GGML_CUDA_FORCE_DMMV g_compute_capabilities[id] = 100*prop.major + 10*prop.minor; +#endif } for (int id = 0; id < g_device_count; ++id) { g_tensor_split[id] /= total_vram; |