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Add more nvtx range for debug

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This commit is contained in:
Jagrit Digani
2025-08-01 12:49:24 -07:00
parent e74bcdc5e3
commit c28249b81a
1 changed files with 8 additions and 0 deletions
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8
mlx/backend/cuda/scaled_dot_product_attention.cu
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@@ -67,6 +67,8 @@ std::shared_ptr<fe::graph::Graph> get_sdpa_forward_graph(
return it->second;
}
nvtx3::scoped_range r("get_sdpa_forward_graph");
// Set up new graph
auto graph = std::make_shared<fe::graph::Graph>();
@@ -141,6 +143,8 @@ std::shared_ptr<fe::graph::Graph> get_sdpa_forward_graph(
// cuDNN only supports native CUDA graphs for sdpa in 9.6 or above.
if (cudnnGetVersion() < 90600) {
nvtx3::scoped_range r("get_sdpa_forward_graph::graph_building");
auto build_status = graph->build(handle, {fe::HeurMode_t::A});
if (!build_status.is_good()) {
throw std::runtime_error(
@@ -437,6 +441,10 @@ void ScaledDotProductAttention::eval_gpu(
const auto& k = copy_unless(is_matrix_contiguous, k_pre);
const auto& v = copy_unless(is_matrix_contiguous, v_pre);
for (const auto& cp : copies) {
encoder.add_temporary(cp);
}
int64_t str_oD = 1;
int64_t str_oH = o.shape(3);
int64_t str_oL = o.shape(1) * str_oH;