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Reply To: Multi GPUs Calculation


Dear Adrian,

Sorry for interrupting your holliday.

I could do mpirun with -mca btl_smcuda_use_cuda_ipc 0.
Thank you so much.

By the way, some instractions for the multiple GPUs calculation , for examples “gpu::cuda::device::synchronize();”, are written in the examples/laminar/cavity3dBenchmark/cavity3d.cpp.

Is it necessary to write in my cpp too for mpirun with multiple GPUs?
I think it is not necessary to write it for CPU mpirun. But I am not sure for GPU.
Moreover I want to know where openMPI and openMP instractions in openLB (both CPU and GPU).