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[PHI] Fix contiguous kernel for big tensor by lshpku · Pull Request #73275 · PaddlePaddle/Paddle · GitHub
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[PHI] Fix contiguous kernel for big tensor #73275
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PR Category
Operator Mechanism
PR Types
Bug fixes
Description
修复contiguous kernel的大Tensor问题，该kernel不容易调用到，一般是transpose后接contiguous才会调用，因此错误不容易发现，我是把测试逻辑改了下，在transpose后加上contiguous才测出问题
contiguous有3个Kernel，都是通过将int转成int64来修复：
性能方面，由于这些Kernel的下标本来也是int64的，只是在运算时没有提前cast导致乘法溢出，因此本PR的修改不会对性能造成影响
测试了error_log中全部34个transpose的case，均通过；另外单独测试了ContiguousDefaultFunc函数（因为不容易调用到），也通过
Pcard-85711