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Put cray-mpich's libraries on LD_LIBRARY_PATH in Perlmutter templates #541

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Merged
xylar merged 2 commits into from
Oct 23, 2026
Merged

Put cray-mpich's libraries on LD_LIBRARY_PATH in Perlmutter templates #541

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3bbc3be
Put cray-mpich and CUDA libs on pm-gpu gnugpu's LD_LIBRARY_PATH
xylar Oct 23, 2026
50df93a
Put each Perlmutter template's cray-mpich on LD_LIBRARY_PATH
xylar Oct 23, 2026
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5 changes: 4 additions & 1 deletion mache/spack/templates/pm-cpu_gnu_mpich.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -129,7 +129,10 @@ spack:
# libfabric module is already loaded, so reloading it as
# an external module restores nothing. The Cray wrappers
# link MPI into every executable, so the linker needs it.
LD_LIBRARY_PATH: "/opt/cray/libfabric/2.3.1/lib64"
# cray-mpich's libraries come first so that executables
# run during a build do not pick up the default
# cray-mpich's from /opt/cray/pe/lib64 instead.
LD_LIBRARY_PATH: "/opt/cray/pe/mpich/9.0.1/ofi/gnu/12.3/lib:/opt/cray/libfabric/2.3.1/lib64"
buildable: false
cray-mpich:
externals:
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5 changes: 4 additions & 1 deletion mache/spack/templates/pm-cpu_intel_mpich.yaml
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Expand Up @@ -139,7 +139,10 @@ spack:
# libfabric module is already loaded, so reloading it as
# an external module restores nothing. The Cray wrappers
# link MPI into every executable, so the linker needs it.
LD_LIBRARY_PATH: "/opt/cray/libfabric/2.3.1/lib64"
# cray-mpich's libraries come first so that executables
# run during a build do not pick up the default
# cray-mpich's from /opt/cray/pe/lib64 instead.
LD_LIBRARY_PATH: "/opt/cray/pe/mpich/9.0.1/ofi/intel/2022.1/lib:/opt/cray/libfabric/2.3.1/lib64"
buildable: false
cray-mpich:
externals:
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5 changes: 4 additions & 1 deletion mache/spack/templates/pm-cpu_nvidia_mpich.yaml
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Expand Up @@ -156,5 +156,8 @@ spack:
# libfabric module is already loaded, so reloading it as
# an external module restores nothing. The Cray wrappers
# link MPI into every executable, so the linker needs it.
LD_LIBRARY_PATH: "/opt/cray/libfabric/2.3.1/lib64"
# cray-mpich's libraries come first so that executables
# run during a build do not pick up the default
# cray-mpich's from /opt/cray/pe/lib64 instead.
LD_LIBRARY_PATH: "/opt/cray/pe/mpich/9.0.1/ofi/nvidia/23.3/lib:/opt/cray/libfabric/2.3.1/lib64"
buildable: false
6 changes: 5 additions & 1 deletion mache/spack/templates/pm-gpu_gnugpu_mpich.yaml
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Expand Up @@ -124,7 +124,11 @@ spack:
# libfabric module is already loaded, so reloading it as
# an external module restores nothing. The Cray wrappers
# link MPI into every executable, so the linker needs it.
LD_LIBRARY_PATH: "/opt/cray/libfabric/2.3.1/lib64"
# cray-mpich's libraries (including the GTL) and CUDA come
# first so that executables run during a build do not pick
# up the default cray-mpich's from /opt/cray/pe/lib64,
# which need a different CUDA.
LD_LIBRARY_PATH: "/opt/cray/pe/mpich/9.0.1/ofi/gnu/12.3/lib:/opt/nvidia/hpc_sdk/Linux_x86_64/25.5/cuda/12.9/lib64:/opt/cray/libfabric/2.3.1/lib64"
buildable: false
cuda:
externals:
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6 changes: 5 additions & 1 deletion mache/spack/templates/pm-gpu_intelgpu_mpich.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -139,7 +139,11 @@ spack:
# libfabric module is already loaded, so reloading it as
# an external module restores nothing. The Cray wrappers
# link MPI into every executable, so the linker needs it.
LD_LIBRARY_PATH: "/opt/cray/libfabric/2.3.1/lib64"
# cray-mpich's libraries (including the GTL) and CUDA come
# first so that executables run during a build do not pick
# up the default cray-mpich's from /opt/cray/pe/lib64,
# which need a different CUDA.
LD_LIBRARY_PATH: "/opt/cray/pe/mpich/9.0.1/ofi/intel/2022.1/lib:/opt/nvidia/hpc_sdk/Linux_x86_64/25.5/cuda/12.9/lib64:/opt/cray/libfabric/2.3.1/lib64"
buildable: false
cuda:
externals:
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6 changes: 5 additions & 1 deletion mache/spack/templates/pm-gpu_nvidiagpu_mpich.yaml
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Expand Up @@ -171,5 +171,9 @@ spack:
# libfabric module is already loaded, so reloading it as
# an external module restores nothing. The Cray wrappers
# link MPI into every executable, so the linker needs it.
LD_LIBRARY_PATH: "/opt/cray/libfabric/2.3.1/lib64"
# cray-mpich's libraries (including the GTL) and CUDA come
# first so that executables run during a build do not pick
# up the default cray-mpich's from /opt/cray/pe/lib64,
# which need a different CUDA.
LD_LIBRARY_PATH: "/opt/cray/pe/mpich/9.0.1/ofi/nvidia/23.3/lib:/opt/nvidia/hpc_sdk/Linux_x86_64/25.5/cuda/12.9/lib64:/opt/cray/libfabric/2.3.1/lib64"
buildable: false
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