fix bug when the cuda kernel config exceeds dims max#33748
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zhiqiu merged 1 commit intoPaddlePaddle:developfrom Jun 24, 2021
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fix bug when the cuda kernel config exceeds dims max#33748zhiqiu merged 1 commit intoPaddlePaddle:developfrom
zhiqiu merged 1 commit intoPaddlePaddle:developfrom
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PR types
Bug fixes
PR changes
OPs
Describe
fix bug when the cuda kernel config exceeds dims max
close PaddlePaddle/PaddleClas#685, #33107
When use 3D dim3 config for the blocks of cuda kernel, the limit of each dim is (1024, 1024, 64). For example
The condition shouble be: x <=1024, y <=1024, z <=64, otherwise, "cudaErrorInvalidConfiguration" will be raised.
In layer_norm_grad, it uses 3D dim3 (1, batch_size, 1) as blocks config. While, batch_size may > 1024.
This PR change
3D dim3 (1, batch_size, 1)to1D dim3 (batch_size)to solve the problem.