Configure Open MPI environment variables and paths#352
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Added environment variables and paths for Open MPI relocation.
SeanBryan51
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Recent changes to the xp65 environment [ACCESS-NRI/ACCESS-Analysis-Conda#352](ACCESS-NRI/ACCESS-Analysis-Conda#352) is causing CMake to pick up the wrong MPI library (/g/data/xp65/public/apps/openmpi/4.1.6 instead of /apps/openmpi/4.1.0/). The OPAL_PREFIX environment variable causes the xp65 MPI library to take precedence over any MPI libraries loaded via module load - as a workaround, this change unsets this variable from the build environment to fix this issue.
SeanBryan51
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Jan 12, 2026
Recent changes to the xp65 environment [ACCESS-NRI/ACCESS-Analysis-Conda#352](ACCESS-NRI/ACCESS-Analysis-Conda#352) is causing CMake to pick up the wrong MPI library (/g/data/xp65/public/apps/openmpi/4.1.6 instead of /apps/openmpi/4.1.0/). The OPAL_PREFIX environment variable causes the xp65 MPI library to take precedence over any MPI libraries loaded via module load - as a workaround, this change unsets this variable from the build environment to fix this issue.
SeanBryan51
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Jan 12, 2026
The OPAL_PREFIX environment variable introduced in PR #352 causes the xp65 MPI library to take precedence over any MPI libraries loaded via module load - as a workaround, this change unsets this variable from the build environment to fix this issue. References CABLE-LSM/benchcab#341
SeanBryan51
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that referenced
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The OPAL_PREFIX environment variable introduced in PR #352 causes the xp65 MPI library to take precedence over any MPI libraries loaded via module load - as a workaround, this change unsets this variable from the build environment to fix this issue. References CABLE-LSM/benchcab#341
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This pull request updates the
modules/common_v3environment module to properly configure the Open MPI installation after its relocation from thehh5toxp65filesystem. The changes ensure that all relevant environment variables and paths are set for Open MPI to function correctly.Note that I have used this approach to avoid having to recompile the executable which could have caused back compatibility issues.
Open MPI relocation and environment configuration:
OPAL_PREFIXenvironment variable and update thePATHto include the new Open MPI binary directory (/g/data/xp65/public/apps/openmpi/4.1.6/bin).LD_LIBRARY_PATHto include eitherliborlib64directories from the new Open MPI location, depending on which exists.MANPATHandPKG_CONFIG_PATHwith the appropriate Open MPI directories if they exist, improving usability for developers.Added environment variables and paths for Open MPI relocation.