[Ansor] Add HW param for Vulkan tuning #7626
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FrozenGene
reviewed
Mar 10, 2021
src/auto_scheduler/search_task.cc
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| device_api->GetAttr(ctx, tvm::runtime::DeviceAttrKind::kWarpSize, &ret); | ||
| int warp_size = ret; | ||
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| int max_vthread_extent = warp_size / 4; |
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Does warp_size have the possibility to be 1?
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A good catch, indeed the spec only requires warp size to be greater than or equal to 1. In practice it is always greater than 1, but I'll update this to int max_vthread_extent = std::max(1, warp_size / 4).
tmoreau89
approved these changes
Mar 11, 2021
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I have reproduced it on a AMD GPU machine and it is reporting the warp/wave size (64) correctly - thanks! |
trevor-m
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May 6, 2021
* add HW param for VK * query warp size properly * guard against warp_size < 4 case Co-authored-by: Masahiro Masuda <masahi@129@gmail.com>
trevor-m
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that referenced
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May 11, 2021
* add HW param for VK * query warp size properly * guard against warp_size < 4 case Co-authored-by: Masahiro Masuda <masahi@129@gmail.com>
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This introduces support for VK backend in ansor. Also added a proper way to query the warp size using VK api, since it can be different for each platform (AMD uses 64 while others 32 etc).
please review @comaniac @FrozenGene @merrymercy @tmoreau89