My model can run by using pytorch, but and "out of memory" error occurs after converting to libtorch moedel

C++
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My model can run by pytorch1.0.0 and cuda9, after converting to libtorch model, “out of memory” error occurred by using libtorch1.0.0 and cuda9. I use https://pytorch.org/tutorials/advanced/cpp_export.html to convert model

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Can you post the code of your model for debugging?