On Tue, Oct 2, 2018 at 10:59 AM David Sommer <[email protected]> wrote:
> Hello, > > i was trying to solve a linear system with a MPIDENSE matrix. I did > PC pc; > KSPGetPC(solver, &pc); > PCSetType(pc, PCLU); > KSPSetOperators(solver, a_petsc, a_petsc); > for some KSP solver and some Mat a_petsc. When i run the code sequentially > (mpirun -n 1) it works, but once i start it in parallel it breaks with the > error message > > > > > > > > *[0]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > [0]PETSC ERROR: See > http://www.mcs.anl.gov/petsc/documentation/linearsolvertable.html > <http://www.mcs.anl.gov/petsc/documentation/linearsolvertable.html> for > possible LU and Cholesky > solvers > [0]PETSC ERROR: Could not locate a solver package. Perhaps you must > ./configure with > --download-<package> > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > <http://www.mcs.anl.gov/petsc/documentation/faq.html> for trouble > shooting. > [0]PETSC ERROR: Petsc Release Version 3.9.3, > unknown > [0]PETSC ERROR: Unknown Name on a arch-linux2-c-debug named manjaroDesktop > by david Tue Oct 2 16:47:10 > 2018 > [0]PETSC ERROR: Configure options --download-superlu_dist > --download-parmetis --download-metis > --download-ptscotch > [0]PETSC ERROR: #1 MatGetFactor() line 4328 in > /home/david/lib/petsc/src/mat/interface/matrix.c * > > I recompiled petsc with the recommended options (and also trying some > other options) but the error persists. on the linear solve table there is > an X at the required solver package column for dense LU. What does it mean? > On > https://www.mcs.anl.gov/petsc/petsc-3.2/docs/linearsolvertable.html > it says "PLAPACK". Did you deprecate it? What is the replacement? > I do not see PLAPACK. You want Elemental. Thanks, Matt > Thanks > > David Sommer > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
