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Make the CUDA kernel of concat correct and fix unit tests. #11541

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merged 2 commits into from
Jun 19, 2018
Merged

Make the CUDA kernel of concat correct and fix unit tests. #11541

merged 2 commits into from
Jun 19, 2018

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qingqing01
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Fix #11540

chengduoZH
chengduoZH reviewed Jun 19, 2018
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paddle/fluid/operators/math/concat.cu Outdated
T curr_col_offset;
while ((curr_col_offset = input_cols[curr_segment + 1]) <= tid_x) {
int curr_segment = 0;
int curr_offset = input_cols[0];
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It seems that line 31~32 can be out of loop.

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Done. Thanks!

@chengduoZH
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@qingqing01
I know the reason what causes the illegal memory access, I use T as the type of curr_col_offset, when the T is a float, and the input shape is too big to excess the representation of a float, it will cause the program to crash. It is my fault.

chengduoZH
chengduoZH approved these changes Jun 19, 2018
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LGTM

@qingqing01 qingqing01 merged commit 9c90dc9 into PaddlePaddle:develop Jun 19, 2018
@qingqing01 qingqing01 deleted the concat_cuda_kernel branch November 14, 2019 05:26
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@qingqing01 @chengduoZH