[petsc-users] Block Number of Grid; Domain Decomposit ion

tang hongwei thw1021 at outlook.com
Sun May 5 08:59:26 CDT 2019


Dear Developers,
      Thanks for your work about PETSc. I am using PETSc (version 3.1) for CFD, but I get confused by some problems, hoping you can help me:

1. Could the block number of grid be more than 1 ? I use pointwise (http://www.pointwise.com<http://www.pointwise.com/>) to draw grid. For some cases, the block number of grid may be more than 1.
2. How PETSc decompose the domain ? In the user manual, I notice that PETSc can decompose the domain automatically.  However, I don't understand how PETSc distributes processors for each sub-domain (How xs, ys, zs, xm, ym, zm get values?)

Best Regards,
Hongwei

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