ikawrakow/ik_llama.cpp
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Remove forgotten unused code

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Kawrakow
2026-01-26 12:54:21 +00:00
parent 65441c2385
commit 69fdd041c1
1 changed files with 0 additions and 44 deletions
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44
ggml/src/ggml-cuda/fattn.cu
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@@ -107,50 +107,6 @@ void ggml_cuda_flash_attn_ext(ggml_backend_cuda_context & ctx, ggml_tensor * dst
// Hence, we use it only for DeepSeek with MLA enabled, where head sizes are 576, 512,
// so no other implementation works.
//
if (false && new_mma_available(cc) && K->ne[0] == 576 && V->ne[0] == 512 && Q->ne[1] == 1 &&
Q->ne[2]/K->ne[2] == 20 && K->ne[1] > 8192) {
// GLM-4.7-Flash TG hack: split 20 heads into 16+4 heads
auto local_Q = *Q;
auto local_dst = *dst;
ggml_tensor local_K, local_V;
ggml_cuda_pool_alloc<half> K_f16(ctx.pool());
if (ggml_is_quantized(K->type)) {
// We need to dequantize here, else we will dequantize the same cache twice
K_f16.alloc(ggml_nelements(K));
to_fp16_cuda_t to_fp16 = ggml_get_to_fp16_cuda(K->type);
to_fp16(K->data, K_f16.ptr, 1, ggml_nelements(K), ctx.stream());
auto bs = ggml_blck_size(K->type);
auto ts = ggml_type_size(K->type);
local_K = *K;
local_K.data = K_f16.get();
local_K.type = GGML_TYPE_F16;
local_K.nb[0] = sizeof(half);
local_K.nb[1] = local_K.nb[1]*bs*sizeof(half)/ts;
local_K.nb[2] = local_K.nb[2]*bs*sizeof(half)/ts;
local_K.nb[3] = local_K.nb[3]*bs*sizeof(half)/ts;
local_dst.src[1] = &local_K;
local_V = local_K;
local_V.ne[0] = V->ne[0];
local_dst.src[2] = &local_V;
}
local_Q.ne[2] = 16;
local_dst.ne[1] = 16;
local_dst.src[0] = &local_Q;
ggml_cuda_flash_attn_ext_mma_new(ctx, &local_dst);
local_Q.ne[2] = 4;
local_Q.data = (char *)local_Q.data + local_Q.nb[2]*16;
local_dst.ne[1] = 4;
local_dst.data = (char *)local_dst.data + local_dst.nb[1]*16;
ggml_cuda_flash_attn_ext_mma_new(ctx, &local_dst);
return;
}
if (new_mma_available(cc) && ((K->ne[0] == 576 && V->ne[0] == 512) || (K->ne[0] == 192 && V->ne[0] == 128 && mma_better_than_turing(cc)))) {
//printf("Using ggml_cuda_flash_attn_ext_mma_new\n");