use IndexList to improve performance of instance_norm op#25132
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zhangting2020 merged 3 commits intoPaddlePaddle:developfrom Oct 12, 2020
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use IndexList to improve performance of instance_norm op#25132zhangting2020 merged 3 commits intoPaddlePaddle:developfrom
zhangting2020 merged 3 commits intoPaddlePaddle:developfrom
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If the compiler is older
多老的编译器？比如gcc4.8能否支持呢？
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目前由于windows上eigen版本未升级，因此直接替换为IndexList会导致编译错误。待windows也升级了eigen后，可以直接使用IndexList
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…e#25132) * use IndexList to improve performance, test=develop * remove EIGEN_HAS_INDEX_LIST, test=develop * use IndexList only when EIGEN_HAS_INDEX_LIST is true
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PR types
Performance optimizationPR changes
OPsDescribe
IndexList in Eigen is used to encode a set of Tensor dimensions/indices. The indices in the list can be known at compile time or at runtime. A mix of static and dynamic indices can also be provided if needed. The tensor code will attempt to take advantage of the indices that are known at compile time to optimize the code it generates. Using IndexList instead of arrays of indices can speed up CPU and GPU performance.
Note:
EIGEN_HAS_INDEX_LISTis used in the code.Performance
CPU：