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<span style="font-size:14px;text-wrap:nowrap;">Hello,</span>
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</span> <span style="font-size:14px;text-wrap:nowrap;">Recently I create unstructure mesh from Gmsh and its mesh format is msh file. However the mesh file contain around <span style="text-wrap-mode:nowrap;">100 million</span> nodes, so when I use <span style="font-size:14px;text-wrap:nowrap;color:#000000;"><strong><a href="https://urldefense.us/v3/__https://petsc.org/release/manualpages/DMPlex/DMPlexCreateFromFile/__;!!G_uCfscf7eWS!b8tabJOQMBPGdL853VyP1yu-DrBuHaOQDcvf368RW41TmzhfdTRagLyrwBnZBeZ6OM3g6neOJBuBS2RCNnBwe35XChWNH5S3bg$" style="color:#000000;">DMPlexCreateFromFile</a> </strong></span></span>
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<span style="text-wrap-mode:nowrap;">it only perform on a single CPU process thus out of memory. </span>
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I ask GPT and it said PETSc may parallel perform <strong><a href="https://urldefense.us/v3/__https://petsc.org/release/manualpages/DMPlex/DMPlexCreateFromFile/__;!!G_uCfscf7eWS!b8tabJOQMBPGdL853VyP1yu-DrBuHaOQDcvf368RW41TmzhfdTRagLyrwBnZBeZ6OM3g6neOJBuBS2RCNnBwe35XChWNH5S3bg$" style="color:#000000;">DMPlexCreateFromFile</a> </strong>when the mesh file is HDF5/Exodus II/XDMF, so it will decrease the <span style="text-wrap-mode:nowrap;">Memory pressure</span> for each CPU process.
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So I sent this email for asking help that how can I load such large-scale mesh to create DMPLEX.
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<span style="font-size:14px;text-wrap:nowrap;">Looking forward to your reply!</span><br>
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<span style="font-size:14px;text-wrap:nowrap;">sinserely,</span><br>
<span style="font-size:14px;text-wrap:nowrap;">Cheng.</span><br>
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