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## Julia_multixpu_octopus.md

      
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    Running a multi-GPU Julia app on octopus

Startup steps for Julia CUDA MPI application relying on ParallelStencil.jl and ImplicitGlobalGrid.jl.
GPU cluster config:

CUDA 11.0
CUDA-aware OpenMPI 3.0.6
gcc 8.3

Following steps should enable a successful multi-GPU run:

  
## Julia_GPU_octopus.md

      
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              May 14, 2021 20:49
            
              
                Steps to set up and run a Julia GPU code on octopus using ParallelStencil.jl module.
              
          
    Running a Julia code on a single GPU on octopus

In the shell, prepare the Julia environment on an octopus node:
$ ssh <username>@octopus.unil.ch

$ ssh -YC nodeXX

$ cd /scratch/<username>/<path-to-folder>