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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
rbeucher
approved these changes
Jan 12, 2026
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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