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Troubleshooting: NVHPC GPU link fails in deep build paths - #2034
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NVHPC names each object's device-code symbol after its full build path, truncated, so in a deep directory different objects collide and the link stops with multiple-definition errors. Seen building at a ~110-character path; the same tree linked at a short one.
sbryngelson
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October 11, 2026 14:18
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Adds a troubleshooting entry for an NVHPC GPU link failure.
NVHPC names each object's device-code symbol (in
.nvFatBinSegment) after its full build path, truncated. In a deep directory the truncated names of different objects collide, and the link stops with errors like:Seen with NVHPC 25.11,
--gpu acc, buildingsimulationfrom a checkout at a ~110-character path. The same commit linked from a short path. The fix is to build from a shorter path.