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[CINN]Fix compilation cache re-use same fn_ptr wrongly by Aurelius84 · Pull Request #64718 · PaddlePaddle/Paddle · GitHub
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[CINN]Fix compilation cache re-use same fn_ptr wrongly #64718
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Merged
Aurelius84
merged 2 commits into
PaddlePaddle:develop
from
Aurelius84:fix_compile_cache
May 30, 2024
Merged
[CINN]Fix compilation cache re-use same fn_ptr wrongly #64718
Aurelius84
merged 2 commits into
PaddlePaddle:develop
from
Aurelius84:fix_compile_cache
May 30, 2024
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你的PR提交成功，感谢你对开源项目的贡献! |
Aurelius84
commented
May 29, 2024
| @@ -20,7 +20,7 @@ | |||
| #include "paddle/phi/core/kernel_registry.h" | |||
| #include "paddle/phi/core/tensor_utils.h" | |||
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| static constexpr float kAtolValue = 1e-5; | |||
| static constexpr float kAtolValue = 1e-8; | |||
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此处 atol 和 rtol 的阈值与numpy.allclose的默认值对齐
phlrain
approved these changes
May 30, 2024
cxxly
approved these changes
May 30, 2024
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LGTM
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PR Category
CINN
PR Types
Bug fixes
Description
Pcard-67164
问题背景
在科学计算LDC模型上，关闭缓存，如下kernel有8个:
fn_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_add_elementwise_add_yield_store_elementwise_mul_elementwise_add_elementwise_add_elementwise_add_elementwise_add_elementwise_add_开启缓存，如下kernel会复用成1个：
fn_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_mul_elementwise_add_elementwise_add_yield_store_elementwise_mul_elementwise_add_elementwise_add_elementwise_add_elementwise_add_elementwise_add__2对应是如下两个子图Case，其实在计算%16时，依赖的上游算子顺序是有差别的，一个是L6+L7+L8，一个是L5+L7+L8.
这几个上游算子，其实从Op层面，他们的ValueInfo、OpInfo完全一样的（即Hash一样），但内在中间算子依赖的顺序不同，对于生成的函数，可能导致输入Argument Tensor解析&映射的顺序有差异，会导致下图中两个红框的CodeGen函数代码段有不同的var，若命中缓存，则引起计算错误。
解决方案
fusion_info.cc中的FusionOpInfo数据结构里inner_deps_除了要考虑依赖的上游算子hash，也要考虑依赖的上游算子index