leezu commented on issue #17521: cmake: don't build PTX and 3.5 arch if cuda arch detection fails URL: https://github.com/apache/incubator-mxnet/pull/17521#issuecomment-582517296 > Not including PTX at all would make it impossible to run MXNet on future GPUs without recompilation. That's true, but given the amount of cuda code in MXNet, PTX JIT compilation does not provide a good user experience (program will hang very long?) and is thus not enabled in the Makefile builds as well AFAIK.
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