vbatts/llama.cpp
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This reverts commit ee88a8999f517f60d9f079b7781fadf623cb1f72.

Revert "data b cache example, slower than original"

This reverts commit 97ec5a01403028f0b9c7eeaac858cb9652ff958d.
This commit is contained in:
Eve 2024-12-29 20:36:59 -05:00
parent e9cbe702b6
commit 5641108a33
2 changed files with 43 additions and 19 deletions
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56
ggml/src/ggml-vulkan/vulkan-shaders/mul_mat_vec_q6_k.comp
View file

@ -12,7 +12,6 @@ layout (constant_id = 1) const uint NUM_ROWS = 1;
shared FLOAT_TYPE tmpsh[NUM_ROWS][BLOCK_SIZE];
shared FLOAT_TYPE sccache[BLOCK_SIZE/16][16];
shared block_q6_K_packed16 blkcache[BLOCK_SIZE/16];
shared B_TYPE bycache[BLOCK_SIZE/16][QUANT_K];
void compute_outputs(const uint32_t first_row, const uint32_t num_rows) {
uint a_offset, b_offset, d_offset;
@ -35,6 +34,7 @@ void compute_outputs(const uint32_t first_row, const uint32_t num_rows) {
const uint ql_offset = 64*v_im + l0;
const uint qh_offset = 32*v_im + l0;
const uint s_offset = 8*v_im + is;
const uint y_offset = 128*v_im + l0;
const uint bcs_offset = (itid%2 == 1) ? 8 : 0;
FLOAT_TYPE temp[NUM_ROWS];
@ -45,16 +45,12 @@ void compute_outputs(const uint32_t first_row, const uint32_t num_rows) {
[[unroll]] for (uint i0 = 0; i0 < num_blocks_per_row; i0 += it_size) {
uint i = i0 + ix; // 16 thread group specific counter
const uint y_idx = i0 * QUANT_K;
const int blim = min(int(num_blocks_per_row) - int(i0), 4);
const uint y_idx = i * QUANT_K + y_offset;
// assume 64 threads
[[unroll]] for (int n = 0; n < blim; ++n) {
[[unroll]] for (int l = 0; l < 4; ++l) {
bycache[n][tid + 64*l] = data_b[b_offset + y_idx + QUANT_K*n + tid + 64*l];
}
}
barrier();
B_TYPE_VEC4 by0 = data_b_v4[(b_offset + y_idx) / 4];
B_TYPE_VEC4 by32 = data_b_v4[(b_offset + y_idx) / 4 + 8];
B_TYPE_VEC4 by64 = data_b_v4[(b_offset + y_idx) / 4 + 16];
B_TYPE_VEC4 by96 = data_b_v4[(b_offset + y_idx) / 4 + 24];
uint ibi = first_row*num_blocks_per_row;
[[unroll]] for (uint n = 0; n < num_rows; ++n) {
@ -63,6 +59,7 @@ void compute_outputs(const uint32_t first_row, const uint32_t num_rows) {
// cache full superblock into shared memory with coalesced reads
// we assume 64 threads here!
const int blim = min(int(num_blocks_per_row) - int(i0), 4);
// this is required as this loop is super sensitive to unrolling with hardcoded 4
if (blim == 4) {
if (tid < 52) {
@ -86,14 +83,41 @@ void compute_outputs(const uint32_t first_row, const uint32_t num_rows) {
const FLOAT_TYPE d = FLOAT_TYPE(data_a[ib0 + i].d);
FLOAT_TYPE dq[16];
FLOAT_TYPE sum = 0;
[[unroll]] for (uint l = 0; l < 16; ++l) {
dq[l] = bitfieldExtract(blkcache[ix].blk[l/2], 1, 4) | (bitfieldExtract(blkcache[ix].blk[64 + l], 2, 2) << 4);
sum = fma(FLOAT_TYPE(bycache[ix][16*itid + l]), dq[l], sum);
uint32_t ql0_u32 = uint32_t(blkcache[ix].blk[ql_offset / 2]) | (uint32_t(blkcache[ix].blk[ql_offset / 2 + 1]) << 16);
uint32_t ql32_u32 = uint32_t(blkcache[ix].blk[ql_offset / 2 + 16]) | (uint32_t(blkcache[ix].blk[ql_offset / 2 + 17]) << 16);
uint32_t ql0_u32_lo4 = ql0_u32 & 0x0F0F0F0F;
uint32_t ql0_u32_hi4 = (ql0_u32 >> 4) & 0x0F0F0F0F;
uint32_t ql32_u32_lo4 = ql32_u32 & 0x0F0F0F0F;
uint32_t ql32_u32_hi4 = (ql32_u32 >> 4) & 0x0F0F0F0F;
uint32_t qh_u32 = uint32_t(blkcache[ix].blk[64 + qh_offset / 2]) | (uint32_t(blkcache[ix].blk[64 + qh_offset / 2 + 1]) << 16);
uint32_t qh0_u32 = (qh_u32 & 0x03030303) << 4;
uint32_t qh2_u32 = (qh_u32 & 0x0C0C0C0C) << 2;
uint32_t qh4_u32 = (qh_u32 & 0x30303030);
uint32_t qh6_u32 = (qh_u32 & 0xC0C0C0C0) >> 2;
uint32_t q0_u32 = ql0_u32_lo4 | qh0_u32;
uint32_t q1_u32 = ql32_u32_lo4 | qh2_u32;
uint32_t q2_u32 = ql0_u32_hi4 | qh4_u32;
uint32_t q3_u32 = ql32_u32_hi4 | qh6_u32;
uvec4 q0 = uvec4(unpack8(q0_u32));
uvec4 q1 = uvec4(unpack8(q1_u32));
uvec4 q2 = uvec4(unpack8(q2_u32));
uvec4 q3 = uvec4(unpack8(q3_u32));
FLOAT_TYPE sum[4] = {0, 0, 0, 0};
[[unroll]] for (uint l = 0; l < 4; ++l) {
sum[0] = fma(FLOAT_TYPE(by0[l]), FLOAT_TYPE(int8_t(q0[l]) - 32), sum[0]);
sum[1] = fma(FLOAT_TYPE(by32[l]), FLOAT_TYPE(int8_t(q1[l]) - 32), sum[1]);
sum[2] = fma(FLOAT_TYPE(by64[l]), FLOAT_TYPE(int8_t(q2[l]) - 32), sum[2]);
sum[3] = fma(FLOAT_TYPE(by96[l]), FLOAT_TYPE(int8_t(q3[l]) - 32), sum[3]);
}
temp[n] += sum * sccache[ix][itid] * d;
[[unroll]] for (uint l = 0; l < 4; ++l)
sum[l] *= sccache[ix][s_offset + l*2];
temp[n] += (sum[0] + sum[1] + sum[2] + sum[3]) * d;
}
}

4
ggml/src/ggml-vulkan/vulkan-shaders/types.comp
View file

@ -269,8 +269,8 @@ struct block_q6_K_packed16
{
// blk contains the following:
// uint16_t ql[QUANT_K_Q6_K/2/2];
// uint16_t qh[QUANT_K_Q6_K/4/2]; 64
// uint16_t scales[QUANT_K_Q6_K/8]; 96
// uint16_t qh[QUANT_K_Q6_K/4/2];
// uint16_t scales[QUANT_K_Q6_K/8];
uint16_t blk[104];
float16_t d;
};