May be an issue printing to STDOUT, HPC sometimes redirect STDOUT to some other log files. Maybe try redirecting your PetscInfo() or PetscPrintf() output to a file. For PetscInfo its just a filename after the info flag: ./yourCode -info somefile . As for the PetscPrintf you will have to change those calls in your src to PetscFPrintf().
Best regards, Jacob Faibussowitsch (Jacob Fai - booss - oh - vitch) Cell: (312) 694-3391 > On Mar 16, 2020, at 9:26 PM, Mark Adams <mfad...@lbl.gov> wrote: > > > > On Mon, Mar 16, 2020 at 9:50 PM Jacob Faibussowitsch <jacob....@gmail.com > <mailto:jacob....@gmail.com>> wrote: > Hello Mark, > > If you are using PetscInfo to print, PetscInfo requires that you pass “-info” > as a command line flag in order to print anything. Sounds simple enough to > miss, did you run your code with it? i.e. ./yourCode -info? > > Yea, I added -info. > > > For what its worth, PetscPrintf on PETSC_COMM_WORLD will always print but > only from proc 0. PetscSynchronizedPrintf prints from all in order. Might be > more useful for debugging than PetscInfo! > > Yea, I started with PetscPrintf. Started with WORLD then tried SELF. Still no > output but I can step through the code and see the print statements, but > nothing. > > This is on Cori/Haswell. I have now used printf on my Mac and it works. I did > not do an install on my Mac, but I would not think that would matter... I > should test that I suppose. > > > Best regards, > > Jacob Faibussowitsch > (Jacob Fai - booss - oh - vitch) > Cell: (312) 694-3391 > >> On Mar 16, 2020, at 7:54 PM, Mark Adams <mfad...@lbl.gov >> <mailto:mfad...@lbl.gov>> wrote: >> >> I am trying to debug an application code that works with v3.7 but fails with >> master. The code works for "normal" solvers but for a solver that uses >> FieldSplit it fails. It looks like vectors are not getting created from >> MatCreateVecs with a matrix that is a MatNest (I can't run the code). >> >> I have put print statements in the interface files to try to see what is >> going on but the print statements seem to disappear somehow. (I added the >> same print statements in my installation of v3.7 to see what is different) I >> was using PetscPrint and then found and example of a Fortran PetscInfo and >> switched to that. I stepped through the code with DDT and see the print >> statements but nothing goes to the output. I did this DDT stuff with >> ex73f90t, which has a MatCreateNest. >> >> I am completely baffled. Does anyone have any ideas? >> >> Thanks, >> Mark >
