simpleP2P cudaDeviceCanAccessPeer cudaDeviceEnablePeerAccess cudaDeviceDisablePeerAccess cudaEventCreateWithFlags cudaEventElapsedTime cudaMemcpy whole ./ ../ ../../Common Performance Strategies Asynchronous Data Transfers Unified Virtual Address Space Peer to Peer Data Transfers Multi-GPU CUDA Performance multi-GPU support peer to peer true simpleP2P.cu only-64-bit 1:CUDA Basic Topics 1:Performance Strategies sm35 sm37 sm50 sm52 sm60 sm61 sm70 sm72 sm75 sm80 sm86 x86_64 linux windows7 ppc64le linux all exe