[Perf] Streams 1-4#410

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hughperkins merged 208 commits into

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hp/streams-quadrantsic-4-stream-pool

May 7, 2026

Commits on Mar 11, 2026

Add CUDA stream and event API for concurrent kernel execution
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Add AMDGPU/HIP stream support and async memory operations
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Add qd.stream_parallel() context manager for implicit stream parallelism
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Commits on Mar 12, 2026

Address review feedback for CUDA streams PR
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Merge branch 'hp/streams-quadrantsic-1-cuda-streams' into hp/streams-quadrantsic-2-amdgpu-cpu
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Move AMDGPU mem_free_async before transfers sync to match CUDA ordering
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Convert AMDGPU sync memcpy_host_to_device to async on active_stream
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Document ROCm >= 5.4 requirement for hipMallocAsync/hipFreeAsync
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Relax concurrency test threshold and log timings
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Add handle==0 guard to AMDGPU stream_synchronize and make stream_ thread_local
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Merge branch 'hp/streams-quadrantsic-2-amdgpu-cpu' into hp/streams-quadrantsic-3-stream-parallel
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Clear stream_parallel_group_id in ForLoopDecoratorRecorder::reset()
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Reject nested stream_parallel blocks
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Document stream_parallel launcher design: per-launch streams, shared context safety
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Revert "Relax concurrency test threshold and log timings"
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Merge branch 'hp/streams-quadrantsic-2-amdgpu-cpu' into hp/streams-quadrantsic-3-stream-parallel
hughperkins
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Merge branch 'hp/streams-quadrantsic-2-amdgpu-cpu' into hp/streams-quadrantsic-3-stream-parallel
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Add stream pool to reuse GPU streams across kernel launches
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Merge branch 'hp/streams-quadrantsic-3-stream-parallel' into hp/streams-quadrantsic-4-stream-pool
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Add test for stream pool reuse across repeated kernel launches
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Destroy pooled streams in CUDAContext and AMDGPUContext destructors
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Commits on Apr 19, 2026

Merge remote-tracking branch 'origin/main' into hp/streams-quadrantsic-1-cuda-streams
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Commits on Apr 20, 2026

Commits on Apr 24, 2026

Commits on Apr 28, 2026

Commits on May 1, 2026

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Commits on May 4, 2026

Merge branch 'main' into hp/streams-quadrantsic-4-stream-pool
hughperkins
authored

Commits on May 7, 2026