> On Feb 29, 2016, at 12:15 AM, Barry Smith <[email protected]> wrote: > > >> On Feb 27, 2016, at 8:22 PM, Boyce Griffith <[email protected]> wrote: >> >> Barry — >> >> I haven’t been following master, and so maybe these have already been >> addressed, but is there a chance that fixes for the performance issues >> Amneet found (options in setting up lots of KSPs in small-block ASM, > > Thanks for the reminder. I have added a new ./configure option > --with-viewfromoptions=0 which will remove all of that overhead and likely > perform better than the "hack" I suggested to apply earlier. This is in the > branch barry/fixes-for-release-1 and will be in master if it passes all the > test. > > I'll also remind you of the option --with-errorchecking=0 which turns off > additional overhead that in theory is not needed in production runs and could > help a bit more when using many small solvers.
Thanks Barry! Is --with-errorchecking=0 implied by --with-debugging=0 (or vice versa), or are these somewhat independent? We were running the timing tests with --with-debugging=0 but not with --with-errorchecking=0. Amneet, can you please verify that the performance issues you uncovered are fixed with a clean checkout of the PETSc branch Barry mentions above along with the foregoing PETSc configure options? Thanks, -- Boyce > > Please let us know if there are any difficulties. > > Barry > > >> and logging of IS objects) will make it into 3.7? >> >> Thanks, >> >> — Boyce >> >>> On Feb 27, 2016, at 3:36 PM, Barry Smith <[email protected]> wrote: >>> >>> >>> PETSc Users, >>> >>> We are planning the PETSc release 3.7 shortly. If you know of any bugs >>> that need to be fixed or enhancements added before the release please let >>> us know. >>> >>> You can think of the master branch of the PETSc repository obtainable with >>> >>> git clone https://bitbucket.org/petsc/petsc petsc >>> >>> as a release candidate for 3.7. Changes for the release are listed at >>> http://www.mcs.anl.gov/petsc/documentation/changes/dev.html >>> >>> Thanks >>> >>> Barry >>> >>
