Just so you don't have to wait for 1.4.3 to be released, here is the patch. Ralph
iof.diff
Description: Binary data
On Jul 12, 2010, at 2:44 AM, jody wrote: > yes, i'm using 1.4.2 > > Thanks > Jody > > On Mon, Jul 12, 2010 at 10:38 AM, Ralph Castain <r...@open-mpi.org> wrote: >> >> On Jul 12, 2010, at 2:17 AM, jody wrote: >> >>> Hi >>> >>> I have a master process which spawns a number of workers of which i'd >>> like to save the output in separate files. >>> >>> Usually i use the '-output-filename' option in such a situation. >>> However, if i do >>> mpirun -np 1 -output-filename work_out master arg1 arg2 >>> all the files work_out.1, work_out.2, ... are ok, >>> but work_out.0 contains both outputs of the master process(process 0 >>> in COMM_WORLD) and >>> of the first worker (process 0 in the communicator of the spawned >>> processes). >> >> Crud - that's a bug. >> >>> >>> I also tried the '-tag-output' option, but this involves several >>> additional steps, >>> because i have to separate the combined outputs >>> mpirun -np 1 -tag-output master arg1 arg2 > total.out >>> grep "\[1,0\]" total.out | sed 's/\[1,0\]<stdout>://' > master.out >>> grep "\[2,0\]" outA | sed 's/\[2,0\]<stdout>://' > worker_0.out >>> grep "\[2,1\]" outA | sed 's/\[2,1\]<stdout>://' > worker_1.out >>> ... >>> Of course, this could be wrapped in a script, but it is a bit cumbersome >>> (and i am not sure if the job-ids are always "1" and "2") ... >>> >>> Is there some simpler way to separate the output of the two streams? >> >> Not really. >> >>> >>> If not, would it be possible to extend the -output-filename option i >>> such a way that it >>> would also combine job-id and rank withe the output file: >>> work_out.1.0 >>> for the master's output, and >>> work_out.2.0 >>> work_out.2.1 >>> work_out.2.2 >>> ... >>> for the worker's output? >> >> Yeah, I can do that - will put something together. Are you doing this in the >> 1.4 series? >> >>> >>> Thank You >>> Jody >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
