On Mon, Jan 7, 2013 at 4:23 PM, Mark F. Adams <mark.adams at columbia.edu>wrote:
> '-pc_ml_reuse_interpolation true' does seem to get ML to reuse some mesh > setup. The setup time goes from .3 to .1 sec on one of my tests from the > first to the second solve. > > Hong: this looks like a way to infer ML's RAP times. I think the second > solves are just redoing the RAP with this flag, like what GAMG does by > default. > Huh, it's changing the sparsity of the coarse grid. $ ./ex15 -da_grid_x 20 -da_grid_y 20 -p 1.2 -ksp_converged_reason -pc_type ml -pc_ml_reuse_interpolation Linear solve converged due to CONVERGED_RTOL iterations 6 [0]PETSC ERROR: --------------------- Error Message ------------------------------------ [0]PETSC ERROR: Argument out of range! [0]PETSC ERROR: New nonzero at (0,8) caused a malloc! [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: Petsc Development HG revision: cb29460836d903f43276d687c4ba9f5917bf6651 HG Date: Sun Jan 06 14:49:14 2013 -0600 [0]PETSC ERROR: See docs/changes/index.html for recent updates. [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting. [0]PETSC ERROR: See docs/index.html for manual pages. [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: ./ex15 on a mpich named batura by jed Tue Jan 8 08:06:37 2013 [0]PETSC ERROR: Libraries linked from /home/jed/petsc/mpich/lib [0]PETSC ERROR: Configure run at Sun Jan 6 15:19:56 2013 [0]PETSC ERROR: Configure options --download-ams --download-blacs --download-chaco --download-generator --download-hypre --download-ml --download-spai --download-spooles --download-sundials --download-superlu --download-superlu_dist --download-triangle --with-blas-lapack=/usr --with-c2html --with-cholmod-dir=/usr --with-clique-dir=/home/jed/usr/clique-mpich --with-elemental-dir=/home/jed/usr/clique-mpich --with-exodusii-dir=/usr --with-hdf5-dir=/opt/mpich --with-lgrind --with-metis-dir=/home/jed/usr/clique-mpich --with-mpi-dir=/opt/mpich --with-netcdf-dir=/usr --with-openmp --with-parmetis-dir=/home/jed/usr/clique-mpich --with-pcbddc --with-pthreadclasses --with-shared-libraries --with-single-library=0 --with-sowing --with-threadcomm --with-umfpack-dir=/usr --with-x -PETSC_ARCH=mpich [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: MatSetValues_SeqAIJ() line 352 in /home/jed/petsc/src/mat/impls/aij/seq/aij.c [0]PETSC ERROR: MatSetValues() line 1083 in /home/jed/petsc/src/mat/interface/matrix.c [0]PETSC ERROR: MatWrapML_SeqAIJ() line 348 in /home/jed/petsc/src/ksp/pc/impls/ml/ml.c [0]PETSC ERROR: PCSetUp_ML() line 639 in /home/jed/petsc/src/ksp/pc/impls/ml/ml.c [0]PETSC ERROR: PCSetUp() line 832 in /home/jed/petsc/src/ksp/pc/interface/precon.c [0]PETSC ERROR: KSPSetUp() line 267 in /home/jed/petsc/src/ksp/ksp/interface/itfunc.c [0]PETSC ERROR: KSPSolve() line 376 in /home/jed/petsc/src/ksp/ksp/interface/itfunc.c [0]PETSC ERROR: SNES_KSPSolve() line 4460 in /home/jed/petsc/src/snes/interface/snes.c [0]PETSC ERROR: SNESSolve_NEWTONLS() line 216 in /home/jed/petsc/src/snes/impls/ls/ls.c [0]PETSC ERROR: SNESSolve() line 3678 in /home/jed/petsc/src/snes/interface/snes.c [0]PETSC ERROR: main() line 221 in src/snes/examples/tutorials/ex15.c application called MPI_Abort(MPI_COMM_WORLD, 63) - process 0 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130108/c442f2c9/attachment.html>
