With a Debian 11 box with two GTX 680 I am unable to get them working. The problem occurred with upgrading from debian 10 to 11 and, from namd 11 to 12 (/NAMD_Git-2021-11-27_Linux-x86_64-multicore-CUDA)
nvidia-driver 460.91.03-1 linux-image-amd64 5.10.84-1 linux kernel 5.10.0-10-amd64 Error when trying a minimization: TCL: Minimizing for 3000 steps FATAL ERROR: CUDA error cudaStreamSynchronize(stream) in file src/CudaTileListKernel.cu, function sortTileLists, line 1577 on Pe 2 (gig64 device 0 pci 0:2:0): an illegal memory access was encountered FATAL ERROR: CUDA error cudaStreamSynchronize(stream) in file src/CudaTileListKernel.cu, function sortTileLists, line 1577 on Pe 2 (gig64 device 0 pci 0:2:0): an illegal memory access was encountered [Partition 0][Node 0] End of program FATAL ERROR: CUDA error cudaStreamSynchronize(stream) in file src/CudaTileListKernel.cu, function sortTileLists, line 1577 on Pe 4 (gig64 device 1 pci 0:3:0): an illegal memory access was encountered FATAL ERROR: CUDA error cudaStreamSynchronize(stream) in file src/CudaTileListKernel.cu, function sortTileLists, line 1577 on Pe 4 (gig64 device 1 pci 0:3:0): an illegal memory access was encountered I have also reconfigured the xserver, at no avail. I have noticed issues about namd12/nvidia on the web, apparently unresolved. Thanks for advice francesco pietra
