ptrendx opened a new pull request #17028: Workaround problem with fusion in CUDA 9 URL: https://github.com/apache/incubator-mxnet/pull/17028 ## Description ## Fixes #17020 The problem comes from the bug in how NVRTC in CUDA 9 handles the `default-device` flag. That flag is supposed to mark all the functions in the file as `__device__` functions, but it should leave the functions decorated differently (like kernels decorated with `__global__`) alone. This is the behavior in CUDA 10+. In CUDA 9, however, this `__device__` attribute is applied to every function (including kernels), which is incompatible with `__launch_bounds__()` attribute that we use for kernels. This PR removes the usage of `default-device` flag for NVRTC compilation and instead manually decorates all the required functions as `__device__`
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