I faced with the problem that is very similar: ‘reduce failed to synchronize: device-side assert triggered’,and the problem occurred in the circumstance that I used the BCEloss.finally I found the cause that my output is a mat consists of the elements that is negative numbers,but the implement of BCEloss is about log(),which has no meaning in the negative area, thus I add a sigmoid to constrain the output between 0-1and my problem is solved.
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