On Fri, Apr 23, 2021 at 2:57 AM Pierre Jolivet <[email protected]> wrote:
> > > On 22 Apr 2021, at 7:45 PM, Barry Smith <[email protected]> wrote: > > > It would be straightforward to add an option to -info to output only > from a particular MPI_COMM_WORLD global rank. > > Maybe an extra :rank at the end of the info options? > > Open 128k files is nuts. > > > It is what it is, I’ve made peace with the fact that I can’t expect any > meaningful timings for large runs when this option is on. > I'm not talking about timings, I am talking about seeing where a code dies. > As a side note, one would expect that this kind of behavior is consistent > across the library. > But in fact, it isn’t. If you do something like -sub_ksp_view_pmat file > with, for example, DD preconditioners, you end up with a single file with > all local matrices scrambled in. > It would be nice to have the same logic, i.e., file.%p, and be able to > filter ranks that actually print to file like you suggest. > These kind of options are less critical than -info so I can just insert > them in the option database after initialization, if rank == view_this_rank > PetscOptionsInsertString(), but doing that using command line arguments > would be easier and more elegant, IMO. > > Thanks, > Pierre > > Barry > > On Apr 22, 2021, at 11:14 AM, Mark Adams <[email protected]> wrote: > > OK, so -info out.%p would do what I asked. Alas, what I really need it to > reduce the output with 128K processes. > Thanks, > > On Thu, Apr 22, 2021 at 11:54 AM Pierre Jolivet <[email protected]> wrote: > >> >> >> On 22 Apr 2021, at 5:33 PM, Jacob Faibussowitsch <[email protected]> >> wrote: >> >> Not out of the box no. There is -info ::self which makes info only print >> from calls made on PETSC_COMM_SELF, but I don’t think that’s what you want. >> Best advice would be to print to a file and grep the file for any lines >> starting with the rank number you want. >> >> >> There is no need for grep, IMHO, just do -info file and then open file.%p >> >> Thanks, >> Pierre >> >> Best regards, >> >> Jacob Faibussowitsch >> (Jacob Fai - booss - oh - vitch) >> >> On Apr 22, 2021, at 10:16, Mark Adams <[email protected]> wrote: >> >> Can I make -info only print from one process? >> Mark >> >> >> >> > >
