NVIDIA / ising-gpu

GPU-accelerated Monte Carlo simulations of 2D Ising Model
MIT License
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Newbie Question regarding MPI and numba.cuda #5

Open treisch opened 4 years ago

treisch commented 4 years ago

Hi, we're excited to get started with this package and are trying to run the basic example right now. We keep having an issue with the line >>> cuda.select_device(rank), and get the error message

numba.cuda.cudadrv.error.CudaSupportError: Error at driver init: 
[803] Call to cuInit results in UNKNOWN_CUDA_ERROR:

We suspect that this is because the package is trying to run the program using MPI, but we only have a single gpu. Is there a flag to run it without MPI? Best, Tobias and Tuan