ANN_BENCH: AnnGPU::uses_stream() for optional algo GPU sync - #2314
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…needed for a GPU algo between iterations
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) Introduce a new virtual member `uses_stream()` for the `AnnGPU` class. Overriding this allows an algorithm inform the benchmark whether the stream synchronization is needed between benchmark iterations. This is relevant for a potential persistent kernel where the CPU threads use an independent mechanics to synchronize and get the results from the GPU. This is different from just not implementing `AnnGPU` for an algorithm in that it allows the algorithm to decide whether the synchronization is needed (depending on input parameters at runtime), while still providing the `get_sync_stream()` functionality. Authors: - Artem M. Chirkin (https://github.com/achirkin) Approvers: - Corey J. Nolet (https://github.com/cjnolet) URL: NVIDIA#2314
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Introduce a new virtual member
uses_stream()for theAnnGPUclass. Overriding this allows an algorithm inform the benchmark whether the stream synchronization is needed between benchmark iterations.This is relevant for a potential persistent kernel where the CPU threads use an independent mechanics to synchronize and get the results from the GPU.
This is different from just not implementing
AnnGPUfor an algorithm in that it allows the algorithm to decide whether the synchronization is needed (depending on input parameters at runtime), while still providing theget_sync_stream()functionality.