Am 12.08.2016 um 20:34 schrieb r...@open-mpi.org:

> Sorry for the delay - I had to catchup on some other things before I could 
> come back to checking this one. Took me awhile to track this down, but the 
> change is in test for master:
> 
> https://github.com/open-mpi/ompi/pull/1958
> 
> Once complete, I’ll set it up for inclusion in v2.0.1
> 
> Thanks for reporting it!
> Ralph
> 
> 
>> On Jul 29, 2016, at 5:47 PM, Phil Regier <preg...@penguincomputing.com> 
>> wrote:
>> 
>> If I'm reading you right, you're presently unable to do the equivalent 
>> (albeit probably with PATH set on a different line somewhere above) of
>> 
>> PATH=arch/x86_64-rhel7-gcc48-opt/bin mpirun -n 1 psana
>> 
>> I'm mildly curious whether it would help to add a leading "./" to get the 
>> equivalent of
>> 
>> PATH=./arch/x86_64-rhel7-gcc48-opt/bin mpirun -n 1 psana
>> 
>> But to be clear, I'm advocating
>> 
>> PATH=$PWD/arch/x86_64-rhel7-gcc48-opt/bin mpirun -n 1 psana
>> 
>> as opposed to
>> 
>> mpirun -n 1 $PWD/arch/x86_64-rhel7-gcc48-opt/bin/psana
>> 
>> mostly because you still get to set the path once and use it many times 
>> without duplicating code.
>> 
>> 
>> For what it's worth, I've seen Ralph's suggestion generalized to something 
>> like
>> 
>> PREFIX=$PWD/arch/x86_64-rhel7-gcc48-opt/bin mpirun -n 1 $PREFIX/psana

AFAICS $PREFIX is evaluated too early.

$ PREFIX=old_value
$ PREFIX=foobar /bin/echo $PREFIX
old_value

Unless exactly this is the desired effect.

-- Reuti


>> 
>> where PREFIX might be set above in the same script, or sourced from a common 
>> config script or a custom environment module.  I think this style appeals to 
>> many users on many levels.
>> 
>> 
>> In any event, though, if this really is a bug that gets fixed, you've got 
>> lots of options.
>> 
>> 
>> 
>> 
>> On Fri, Jul 29, 2016 at 5:24 PM, Schneider, David A. 
>> <david...@slac.stanford.edu> wrote:
>> 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
>> _______________________________________________
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>> 
>> 
>> 
>> --
>> Phil Regier, Professional Services Engineer
>> preg...@penguincomputing.com<mailto:preg...@penguincomputing.com>
>> 415.954.2864 (office)
>> 415.748.9056 (cell)
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>> 
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> 
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