No. The PATH variable simply tells the system in which order the directories should be searched for executables.
so in .bash_profile just add the line PATH=/usr/lib/openmpi/1.2.5-gcc/bin:$PATH after the line PATH=$PATH:$HOME/bin Then the system will search in /usr/lib/openmpi/1.2.5-gcc/bin before it will look in the directories it would have looked in anyway. Jody On Tue, Aug 12, 2008 at 11:59 AM, Rayne <lancer6...@yahoo.com> wrote: > My .bash_profile and .bashrc on the server are exactly the same as that on my > PC. However, I can run mpiexec without any problems just using my PC as a > single node, i.e. without trying to login to other servers and using multiple > nodes. I only get the errors on the server. > > In .bash_profile, I see > > PATH=$PATH:$HOME/bin > > If I change this, won't it affect other programs as well? > > Thank you. > > Regards, > Rayne > > --- On Tue, 12/8/08, jody <jody....@gmail.com> wrote: > >> From: jody <jody....@gmail.com> >> Subject: Re: [OMPI users] Setting up Open MPI to run on multiple servers >> To: lancer6...@yahoo.com, "Open MPI Users" <us...@open-mpi.org> >> Date: Tuesday, 12 August, 2008, 5:23 PM >> What are the contents of your $PATH environment variable? >> Make sure that your Open-MPI folder >> (/usr/lib/openmpi/1.2.5-gcc/bin) >> precedes '/usr/bin' in $PATH, >> i.e. >> /usr/lib/openmpi/1.2.5-gcc/bin:/usr/bin >> >> then the Open-MPI version of mpirun or mpiexec will be used >> instead of >> the LAM-versions. >> >> This should also be the case on your other machines. >> >> BTW, since it seems you haven't correctly set your PATH >> variable, i >> suspect you have omitted >> to set LD_LIBRARY_PATH as well... >> see points 1,2 and 3 in >> http://www.open-mpi.org/faq/?category=running >> >> Jody >> >> On Tue, Aug 12, 2008 at 11:10 AM, Rayne >> <lancer6...@yahoo.com> wrote: >> > Hi, >> > >> > I looked for any folders with 'lam', and found >> 2, under /usr/lib/lam and /etc/lam. I don't know if it >> means LAM was previously installed, because my PC also has >> /usr/lib/lam, although the contents are different. I renamed >> the 2 folders, and got the "*** Oops -- I cannot open >> the LAM help file." error below instead. >> > >> > I tried 'whichexec', and it gave me >> /usr/bin/mpiexec. I checked the mpiexec there and it's >> actually a Perl script, and I believe I installed OpenMPI in >> /usr/lib64/openmpi/1.2.5-gcc/ >> > >> > So I tried mpirun instead and it gave me the following >> message: >> > >> > "*** Oops -- I cannot open the LAM help file. >> > *** I tried looking for it in the following places: >> > *** >> > *** $HOME/lam-helpfile >> > *** $HOME/lam-7.0.6-helpfile >> > *** $HOME/etc/lam-helpfile >> > *** $HOME/etc/lam- 7.0.6-helpfile >> > *** $LAMHELPDIR/lam-helpfile >> > *** $LAMHELPDIR/lam-7.0.6-helpfile >> > *** $LAMHOME/etc/lam-helpfile >> > *** $LAMHOME/etc/lam-7.0.6-helpfile >> > *** $SYSCONFDIR/lam-helpfile >> > *** $SYSCONFDIR/lam- 7.0.6-helpfile >> > *** >> > *** You were supposed to get help on the program >> "MPI" >> > *** about the topic "no-lamd" >> > *** >> > *** Sorry!" >> > >> > Firstly, how do I change the settings such that >> mpiexec points to the mpiexec in my installation folder, >> which I believe should be >> > /usr/lib/openmpi/1.2.5-gcc/bin/mpiexec, and the >> mpiexec there seems to be a shortcut that points to >> /usr/lib/openmpi/1.2.5-gcc/bin/orterun. Would this help? >> While I'm at it, it seems that mpirun, which is >> /usr/bin/mpirun currently, should also point to >> /usr/lib/openmpi/1.2.5-gcc/bin/mpirun, which also is a >> shortcut to /usr/lib/openmpi/1.2.5-gcc/bin/orterun. >> > >> > Thank you. >> > >> > Regards, >> > Rayne >> > >> > --- On Tue, 12/8/08, jody <jody....@gmail.com> >> wrote: >> > >> >> From: jody <jody....@gmail.com> >> >> Subject: Re: [OMPI users] Setting up Open MPI to >> run on multiple servers >> >> To: lancer6...@yahoo.com, "Open MPI >> Users" <us...@open-mpi.org> >> >> Date: Tuesday, 12 August, 2008, 3:38 PM >> >> Hi Ryan >> >> Another thing: >> >> Have you checked if the mpiexec you call is really >> the one >> >> from your >> >> Open-MPI installation? >> >> >> >> Try 'which mpiexec' to find out. >> >> >> >> Jody >> >> >> >> On Tue, Aug 12, 2008 at 9:36 AM, jody >> >> <jody....@gmail.com> wrote: >> >> > Hi Ryan >> >> > >> >> > The message "Lamnodes Failed!" >> seems to >> >> indicate that you still have a >> >> > LAM/MPI installation somewhere. >> >> > You should get rid of that first. >> >> > >> >> > Jody >> >> > >> >> > On Tue, Aug 12, 2008 at 9:00 AM, Rayne >> >> <lancer6...@yahoo.com> wrote: >> >> >> Hi, thanks for your reply. >> >> >> >> >> >> I did what you said, set up the >> password-less ssh, >> >> nfs etc, and put the IP address of the server in >> the default >> >> hostfile (in my PC only, the default hostfile in >> the server >> >> does not contain any IP addresses). Then I >> installed Open >> >> MPI in the server under the same directory as my >> PC, e.g. >> >> /usr/lib/openmpi/1.2.5-gcc/ >> >> >> All my MPI programs and executables, e.g. >> a.out >> >> are in the shared folder. However, I have trouble >> running >> >> the MPI programs. >> >> >> >> >> >> After compiling my MPI program on my PC, >> I tried >> >> to run it via "mpiexec -n 2 ./a.out". >> However, I >> >> get the error message >> >> >> >> >> >> "Failed to find or execute the >> following >> >> executable: >> >> >> Host: (the name of the server) >> >> >> Executable: ./a.out >> >> >> >> >> >> Cannot continue" >> >> >> >> >> >> Then when I tried to run the MPI program >> on my >> >> server after compiling, I get the error: >> >> >> >> >> >> "Lamnodes Failed! >> >> >> Check if you had booted lam before >> calling mpiexec >> >> else use -machinefile to pass host file to >> mpiexec" >> >> >> >> >> >> I'm guessing that because the server >> cannot >> >> run the MPI program, I can't run the program >> on my PC as >> >> well. Is there some other configurations I missed >> when using >> >> Open MPI on my server? >> >> >> >> >> >> Thank you. >> >> >> >> >> >> Regards, >> >> >> Rayne >> > >> > >> > Yahoo! Toolbar is now powered with Search >> Assist.Download it now! >> > http://sg.toolbar.yahoo.com/ >> > >> > _______________________________________________ >> > users mailing list >> > us...@open-mpi.org >> > http://www.open-mpi.org/mailman/listinfo.cgi/users >> > > > > New Email names for you! > Get the Email name you've always wanted on the new @ymail and @rocketmail. > Hurry before someone else does! > http://mail.promotions.yahoo.com/newdomains/sg/ > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >
