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Previously, cutorch would initialize every CUDA device and enable P2P access between all pairs. This slows down start-up, especially with 8 devices. Now, THCudaInit does not initialize any devices and P2P access is enabled lazily. Setting the random number generator seed also does not initialize the device until random numbers are actually used.
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Previously, cutorch would initialize every CUDA device and enable P2P
access between all pairs. This slows down start-up, especially with 8
devices. Now, THCudaInit does not initialize any devices and P2P access
is enabled lazily. Setting the random number generator seed also does
not initialize the device until random numbers are actually used.