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Add HWLOC_KEEP_NVIDIA_GPU_NUMA_NODES=0 to MPS wrapper script to avoid GPU NUMA nodes #179

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Merged
merged 2 commits into from
Jul 3, 2025
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Add HWLOC_KEEP_NVIDIA_GPU_NUMA_NODES=0 to MPS wrapper script to avoid GPU NUMA nodes #179

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Add HWLOC_KEEP_NVIDIA_GPU_NUMA_NODES=0 to MPS wrapper script to avoid…
msimberg Jul 2, 2025
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msimberg Jul 3, 2025
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6 changes: 4 additions & 2 deletions docs/running/slurm.md
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Original file line number Diff line number Diff line change
Expand Up @@ -300,8 +300,10 @@ if [[ $SLURM_LOCALID -eq 0 ]]; then
CUDA_VISIBLE_DEVICES=0,1,2,3 nvidia-cuda-mps-control -d
fi

# Set CUDA device
numa_nodes=$(hwloc-calc --physical --intersect NUMAnode $(hwloc-bind --get --taskset))
# Set CUDA device. Disable HWLOC_KEEP_NVIDIA_GPU_NUMA_NODES to avoid GPU NUMA
# nodes appearing in the list of CUDA devices. They start appearing in hwloc
# version 2.11.
numa_nodes=$(HWLOC_KEEP_NVIDIA_GPU_NUMA_NODES=0 hwloc-calc --physical --intersect NUMAnode $(hwloc-bind --get --taskset))
export CUDA_VISIBLE_DEVICES=$numa_nodes

# Wait for MPS to start
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