Netgen build error #32799
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Issue or question about MOOSEI am building fresh moose distrubution using just-built gcc15.2.0 and openmpi5.0.10. PETSc builds fine, but building libmesh throws an error when building netgen. Specifically, the error is Running diagnostics.sh shows compilers and compiler, linker flags are OK. (Optional) code in question / simulation log / errorsNo response Encountering Errors? Please include diagnostic outputNo response |
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Replies: 2 comments 11 replies
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hello do you need this mesh generator? if not then disable netgen in the install libmesh script to get past this.
there is not much to go off of. I'd delete the libmesh directory and retry it in case something went wrong during the clone |
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/ what is openmpi4 using by default? also do you have numbers on these slowdowns? |
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Not so sure. ChatGBT suggested that 'the remaining “usual suspect” on a single EPYC node is not UCX, but the quality of the shared‑memory transport and NUMA locality in your OpenMPI 5 build.' and suggested' the slowdown is (A) missing single-copy smsc (knem/xpmem) or (B) binding/NUMA differences'. I know my openmpi is missing knem/xpmem. Anyhow, I kind of ran out of gas here, and ChatGBT tends to hallucinate a lot so I am not sure how much I trust its assessment other than the openmpi5 build is missing knem/xpmem. |
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on both versions of openmpi should give us some info |
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The output of ompi_info --all is rather extensive. Is there anything in particular I should look for? |
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no I m fishing. feel free to email me the logs instead of posting here |
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Hi Guillaume. No, I don't need it. I figured out how to disable netgen and build is proceeding. (ipdate_and_rebuild_libmesh.sh --disable-netgen) |
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hello
do you need this mesh generator?
https://mooseframework.inl.gov/source/meshgenerators/XYZDelaunayGenerator.html
if not then disable netgen in the install libmesh script to get past this.
there is not much to go off of. I'd delete the libmesh directory and retry it in case something went wrong during the clone