vbatts/llama.cpp
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Eve 2024-12-27 15:44:59 -05:00
parent f833b75175
commit 25d7ae429d
1 changed files with 8 additions and 6 deletions
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10
ggml/src/ggml-vulkan/vulkan-shaders/mul_mat_vec_q6_k.comp
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@ -10,6 +10,7 @@ layout (constant_id = 0) const uint BLOCK_SIZE = 32;
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];
void compute_outputs(const uint32_t first_row, const uint32_t num_rows) {
@ -57,12 +58,13 @@ 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!
[[unroll]] for (int l = 0; (l < 4) && (i0 + l < num_blocks_per_row); ++l) {
blkcache[l].ql[tid] = data_a_packed16[ib0 + i0 + l].ql[tid];
//
// hacky method of reading beyond ql and the block struct size but it looks like vulkan doesn't care? o_O
// this assumes that the struct is packed in continous 16 bit blocks to work
blkcache[l].ql[64 + tid] = data_a_packed16[ib0 + i0 + l].ql[64 + tid];
[[unroll]] for (int l = 0; l < 7; ++l) {
blkcache[0].ql[tid + 64*l] = data_a_packed16[ib0 + i0].ql[tid + 64*l];
}
sccache[ix][itid] = FLOAT_TYPE(blkcache[ix].scales[itid]);
barrier();
if (i >= num_blocks_per_row)
continue;
@ -100,7 +102,7 @@ void compute_outputs(const uint32_t first_row, const uint32_t num_rows) {
}
[[unroll]] for (int l = 0; l < 4; ++l)
sum[l] *= FLOAT_TYPE(blkcache[ix].scales[s_offset + l*2]);
sum[l] *= sccache[ix][s_offset + l*2];
temp[n] += (sum[0] + sum[1] + sum[2] + sum[3]) * FLOAT_TYPE(blkcache[ix].d);
}
}