Memory optimization in convolution layer by the grouped im2col and gemm. #6802
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qingqing01
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Except for the unit testing, also tested on the real model. |
hedaoyuan
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Dec 26, 2017
| resizeBuffer<Device>(colShape.getElements()); | ||
| size_t workspaceSize = colShape.getElements() * sizeof(real); | ||
| double memoryLimitBytes = | ||
| static_cast<double>(1LL << 20) * FLAGS_conv_workspace_limit_in_mb; |
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FLAGS_conv_workspace_limit_in_mb这个值，一般用户不会知道该如何设置。这么实现，可以减少临时内存的使用，但代码不够友好，使用起来也比较困难。基于这个思路，可以进一步优化实现，见#7034。
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Fix #6801
im2col+gemm.FLAGS_ conv_workspace_limit_in_mbto determine whether to enable this function.