vbatts/llama.cpp
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ggml : add ggml_flash_attn_ext API

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Georgi Gerganov 2024-01-18 17:42:55 +02:00
parent ad19812cda
commit a1c004ef2e
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GPG key ID: 449E073F9DC10735
6 changed files with 456 additions and 38 deletions
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28
tests/test-backend-ops.cpp
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@ -1384,6 +1384,32 @@ struct test_leaky_relu : public test_case {
}
};
// GGML_OP_FLASH_ATTN_EXT
struct test_flash_attn_ext : public test_case {
const ggml_type typeq;
const int64_t hs; // head size
const int64_t nh; // num heads
const int64_t kv; // kv size
const int64_t nt; // tokens
std::string vars() override {
return VARS_TO_STR5(typeq, hs, nh, kv, nt);
}
test_flash_attn_ext(ggml_type typeq = GGML_TYPE_F16,
int64_t hs = 128, int64_t nh = 32, int64_t kv = 96, int64_t nt = 8)
: typeq(typeq), hs(hs), nh(nh), kv(kv), nt(nt) {}
ggml_tensor * build_graph(ggml_context * ctx) override {
ggml_tensor * q = ggml_new_tensor_4d(ctx, typeq, hs, nt, nh, 1);
ggml_tensor * k = ggml_new_tensor_4d(ctx, GGML_TYPE_F16, hs, kv, nh, 1);
ggml_tensor * v = ggml_new_tensor_4d(ctx, GGML_TYPE_F16, kv, hs, nh, 1);
ggml_tensor * mask = ggml_new_tensor_4d(ctx, GGML_TYPE_F32, kv, nt, 1, 1);
ggml_tensor * out = ggml_flash_attn_ext(ctx, q, k, v, mask, 1.0f/sqrtf(hs));
return out;
}
};
// Mixtral MOE
struct test_moe : public test_case {
const int n_experts;
@ -1650,6 +1676,8 @@ static bool test_backend(ggml_backend_t backend, test_mode mode, const char * op
test_cases.emplace_back(new test_pad());
test_cases.emplace_back(new test_leaky_relu());
test_cases.emplace_back(new test_flash_attn_ext(GGML_TYPE_F16, 128, 32, 96, 8));
#if !defined(__SANITIZE_THREAD__)
// FIXME: these tests use too much memory with thread sanitizer
test_cases.emplace_back(new test_moe(8, 2, 1, 4096, 8*1024));