Hi, Thanks for the reply! It does look like mpirun runs from the same directory as where I launch it, and that the environment has the same value for PATH that I had before (with the relative directory in front), but of course, there are lots of other MPI based environment variables defined - maybe one of those means don't use the relative paths?
Explicitly setting the path with $PWD like you say, yes, I agree that is a good defensive practice, but it is more cumbersome, the actually path looks mpirun -n 1 $PWD/arch/x86_64-rhel7-gcc48-opt/bin/psana best, David Schneider SLAC/LCLS ________________________________________ From: users [users-boun...@lists.open-mpi.org] on behalf of Phil Regier [preg...@penguincomputing.com] Sent: Friday, July 29, 2016 5:12 PM To: Open MPI Users Subject: Re: [OMPI users] mpirun won't find programs from the PATH environment variable that are in directories that are relative paths I might be three steps behind you here, but does "mpirun <args> pwd" show that all your launched processes are running in the same directory as the mpirun command? I assume that "mpirun <args> env" would show that your PATH variable is being passed along correctly, since you don't have any problems with absolute paths. In any event, is PATH=$PWD/dir/bin not an option? Seems to me that this last would be good practice for location-sensitive launches in general, though I do tend to miss things. On Fri, Jul 29, 2016 at 4:34 PM, Schneider, David A. <david...@slac.stanford.edu<mailto:david...@slac.stanford.edu>> wrote: I am finding, on linux, rhel7, with openmpi 1.8.8 and 1.10.3, that mpirun won't find apps that are specified on a relative path, i.e, if I have PATH=dir/bin and I am in a directory which has dir/bin as a subdirectory, and an executable bir/bin/myprogram, I can't do mpirun myprogram I get the error message that mpirun was unable to find the specified executable file, and therefore did not launch the job. whereas if I put an absolute path, something like PATH=/home/me/dir/bin then it works. This causes some problematic silent failure, sometimes we use relative directories to override a 'base' release, so if I had PATH=dir/bin:/central/install/dir/bin and myprogram was in both dir/bin and /central/install/dir/bin, through mpirun, I would be running myprogram from the central install, but otherwise I would run it from my own directory. Do other people find this is the case? I wonder if it is a problem that got introduced through our installation of openmpi. We do create relocatable rpm's, and I'm also trying openmpi from a conda package that is relocatable, I think all the prefix paths in the binary and text files were corrected properly for the install - at least everything else seems to work. best, David Schneider SLAC/LCLS _______________________________________________ users mailing list users@lists.open-mpi.org<mailto:users@lists.open-mpi.org> https://rfd.newmexicoconsortium.org/mailman/listinfo/users -- Phil Regier, Professional Services Engineer preg...@penguincomputing.com<mailto:preg...@penguincomputing.com> 415.954.2864 (office) 415.748.9056 (cell) _______________________________________________ users mailing list users@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/users
