These are the only PETSc params that I used: -log_summary -options_left false -fp_trap
I last update about 3 weeks ago and I am on a branch. I can redo this with a current master. My repo seems to have been polluted: 13:35 edison12 master> ~/petsc$ git status # On branch master # Your branch is ahead of 'origin/master' by 262 commits. # nothing to commit (working directory clean) I trust this is OK but let me know if you would like me to clone a fresh repo. Mark On Wed, Nov 11, 2015 at 11:21 AM, Barry Smith <[email protected]> wrote: > > Thanks > > do you use a petscrc file or any file with PETSc options in it for the > run? > > Thanks please send me the exact PETSc commit you are built off so I can > see the line numbers in our source when things go bad. > > Barry > > > On Nov 11, 2015, at 7:36 AM, Mark Adams <[email protected]> wrote: > > > > > > > > On Tue, Nov 10, 2015 at 11:15 AM, Barry Smith <[email protected]> > wrote: > > > > Please send me the full output. This is nuts and should be reported > once we understand it better to NERSc as something to be fixed. When I pay > $60 million in taxes to a computing center I expect something that works > fine for free on my laptop to work also there. > > > > Barry > > > > > On Nov 10, 2015, at 7:51 AM, Mark Adams <[email protected]> wrote: > > > > > > I ran an 8 processor job on Edison of a small code for a short run > (just a linear solve) and got 37 Mb of output! > > > > > > Here is a 'Petsc' grep. > > > > > > Perhaps we should build an ignore file for things that we believe is a > false positive. > > > > > > On Tue, Nov 3, 2015 at 11:55 AM, Barry Smith <[email protected]> > wrote: > > > > > > I am more optimistic about valgrind than Mark. I first try valgrind > and if that fails to be helpful then use the debugger. valgrind has the > advantage that it finds the FIRST place that something is wrong, while in > the debugger it is kind of late at the crash. > > > > > > Valgrind should not be noisy, if it is then the > applications/libraries should be cleaned up so that they are valgrind clean > and then valgrind is useful. > > > > > > Barry > > > > > > > > > > > > > On Nov 3, 2015, at 7:47 AM, Mark Adams <[email protected]> wrote: > > > > > > > > BTW, I think that our advice for segv is use a debugger. DDT or > Totalview, and gdb if need be, will get you right to the source code and > will get 90% of bugs diagnosed. Valgrind is noisy and cumbersome to use > but can diagnose 90% of the other 10%. > > > > > > > > On Tue, Nov 3, 2015 at 7:32 AM, Denis Davydov <[email protected]> > wrote: > > > > Hi Jose, > > > > > > > > > On 3 Nov 2015, at 12:20, Jose E. Roman <[email protected]> wrote: > > > > > > > > > > I am answering the SLEPc-related questions: > > > > > - Having different number of iterations when changing the number > of processes is normal. > > > > the change in iterations i mentioned are for different > preconditioners, but the same number of MPI processes. > > > > > > > > > > > > > - Yes, if you do not destroy the EPS solver, then the > preconditioner would be reused. > > > > > > > > > > Regarding the segmentation fault, I have no clue. Not sure if this > is related to GAMG or not. Maybe running under valgrind could provide more > information. > > > > will try that. > > > > > > > > Denis. > > > > > > > > > > > > > <petsc_val.gz> > > > > > > <outval.gz> > >
