32 or 64 bit ksp mac7/20/2023 How do I use PETSc for Domain Decomposition? I want to use Hypre boomerAMG without GMRES but when I run -pc_type hypre -pc_hypre_type boomeramg -ksp_type preonly I don’t get a very accurate answer! How can I redirect PETSc’s stdout and stderr when programming with a GUI interface in Windows Developer Studio or to C++ streams? What does it mean when make check errors on PetscOptionsInsertFile()? How to fix the problem: PETSc was configured with one MPICH (or OpenMPI) mpi.h version but now appears to be compiling using a different MPICH (or OpenMPI) mpi.h version How can I find the URL locations of the packages you install using -download-PACKAGE? What Fortran compiler do you recommend on macOS? How do I enable Python bindings (petsc4py) with PETSc? What if I get an internal compiler error? When should/can I use the configure option -with-64-bit-indices? What do I do if my MPI compiler wrappers are invalid? Must I still install and use a version of MPI?Ĭan I install PETSc to not use X windows (either under Unix or Microsoft Windows with GCC)? I want to use PETSc only for uniprocessor programs. ![]() How do I begin using PETSc if the software has already been completely built and installed by someone else? Why doesn’t PETSc use Qd to implement support for extended precision? How come when I run the same linear solver on a different number of processes it takes a different number of iterations?Ĭan PETSc use GPUs to speed up computations? ![]() How come when I run the same program on the same number of processes I get a “different” answer? How do such a small group of people manage to write and maintain such a large and marvelous package as PETSc?įor complex numbers will I get better performance with C++? Why is PETSc written in C, instead of Fortran or C++?ĭoes all the PETSc error checking and logging reduce PETSc’s efficiency? ![]() What kind of license is PETSc released under? What kind of parallel computers or clusters are needed to use PETSc? Or why do I get little speedup? How can I subscribe to the PETSc mailing lists?
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