vbatts/llama.cpp
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tests: Fix memory bandwidth calculation for perf tests

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Add a flops calculation for flash attention.

Add one GGML_OP_CPY perf test.
This commit is contained in:
Jeff Bolz 2024-11-11 12:19:31 -06:00
parent 54ef9cfc72
commit 103f10ca29
1 changed files with 12 additions and 1 deletions
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13
tests/test-backend-ops.cpp
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@ -681,6 +681,7 @@ struct test_case {
// run
int64_t total_time_us = 0;
int64_t total_mem = 0;
int total_runs = 0;
do {
int64_t start_time = ggml_time_us();
@ -688,6 +689,7 @@ struct test_case {
int64_t end_time = ggml_time_us();
total_time_us += end_time - start_time;
total_mem += mem;
total_runs += n_runs;
} while (total_time_us < 1000*1000); // run for at least 1 second
@ -717,7 +719,7 @@ struct test_case {
} else {
printf("%8zu kB/run - \033[1;34m%7.2f GB/s\033[0m",
op_size(out) / 1024,
mem / (total_time_us / 1e6) / 1024.0 / 1024.0 / 1024.0);
total_mem / (total_time_us / 1e6) / 1024.0 / 1024.0 / 1024.0);
}
printf("\n");
@ -2740,6 +2742,13 @@ struct test_flash_attn_ext : public test_case {
return 5e-4;
}
uint64_t op_flops(ggml_tensor * t) override {
GGML_UNUSED(t);
// Just counting matmul costs:
// Q*K^T is nb x hs x kv, P*V is nb x kv x hs, per head
return 2 * 2 * nh * nb * hs * kv;
}
test_flash_attn_ext(int64_t hs = 128, int64_t nh = 32, int64_t kv = 96, int64_t nb = 8,
bool mask = true, float max_bias = 0.0f, float logit_softcap = 0.0f, ggml_type type_KV = GGML_TYPE_F16)
: hs(hs), nh(nh), kv(kv), nb(nb), mask(mask), max_bias(max_bias), logit_softcap(logit_softcap), type_KV(type_KV) {}
@ -3779,6 +3788,8 @@ static std::vector<std::unique_ptr<test_case>> make_test_cases_perf() {
test_cases.emplace_back(new test_bin_bcast(ggml_add, GGML_TYPE_F32, {4096, 1, 1, 1}, {1, 1, 1, 1}));
test_cases.emplace_back(new test_bin_bcast(ggml_add, GGML_TYPE_F32, {4096, 1, 1, 1}, {1, 512, 1, 1}));
test_cases.emplace_back(new test_cpy(GGML_TYPE_F32, GGML_TYPE_F16, {512, 3072, 1, 1}));
for (int bs : {1, 512}) {
for (ggml_type type_a : all_types) {
for (ggml_type type_b : {GGML_TYPE_F32}) {