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[CINN] Support grid reduce for single SR reduce by lshpku · Pull Request #68220 · PaddlePaddle/Paddle · GitHub
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[CINN] Support grid reduce for single SR reduce #68220
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你的PR提交成功，感谢你对开源项目的贡献! |
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Sorry to inform you that 81aa164's CIs have passed for more than 7 days. To prevent PR conflicts, you need to re-run all CIs manually. |
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lshpku
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zyfncg
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| lowered_funcs.push_back(std::move(func)); | ||
| } | ||
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| // collect temp space sizes | ||
| if (lowered_funcs.size() > 1) { |
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这里为什么是 >1 ? 具体的含义是什么？
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lowered_funcs里面cinn kernel排在前面，最后一个是x86 kernel，但是x86 kernel没有temp space，所以判断lowered_funcs数>1就是保证从cinn kernel里拿到temp space信息，如果<=1就说明没有cinn kernel；这个地方之后支持动态shape的时候还要改的，这是静态shape的临时方案
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这里的信息有点隐晦，后续PR里先加上些注释说明吧
zhangbo9674
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PR Category
CINN
PR Types
New features
Description
Support grid reduce (cross-block reduce) for single, static-shaped, SR-layout reduce. Grid reduce improves parallelism for cases where the reduce axis is large.
This PR includes the following modifications:
grid_reduce_numparameter ingroup_tile_config.cctile_first_general_tactic.cccodegen_device_util.cccinn_jit_instruction.ccPcard-85711