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[Runtime] ParallelFor skipping thread backend for unit extent #16508

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Merged
jinhongyii merged 1 commit into from
Feb 2, 2024
Merged

[Runtime] ParallelFor skipping thread backend for unit extent #16508

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5 changes: 5 additions & 0 deletions include/tvm/runtime/threading_backend.h
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Original file line number Diff line number Diff line change
Expand Up @@ -203,6 +203,11 @@ inline void parallel_launch_with_threading_backend(T flambda) {

template <typename T>
inline void parallel_for_with_threading_backend(T flambda, int64_t begin, int64_t end) {
if (end - begin == 1) {
flambda(begin);
return;
}

auto flaunch = [begin, end, flambda](int task_id, int num_task) {
// For each thread, do static division and call into flambda.
int64_t total_len = end - begin;
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