Dear All,
I have parallel program written on mpi. I am able to run on openmpi environment in our Linux cluster. I found out that it is rather slow. I have heard that it could be faster if it is run on infinipath environment where it has lower latency. I run my program which runs perfectly on openmpi environment first by changing the environment to using (infinipath/core/gcc/2.1 and infinipath/ofed/2.1 in my case ) and submit my job as: qsub -R y -pe infinipath 8 myscript.sh where the script "myscript" contains the command: mpirun -m $TMPDIR/machines -np $NSLOTS ./test where test is the executable file that was produced by running my parallel program test.f90 as mpif90 test.f90 -o test After submitting my jobs with a given number of "Nslots", I got the error message as /usr/local/Cluster-Apps/sge/default/spool/node103/job_scripts/4947620: line 37: mpirun: command not found Any comments are welcome, thankx ? Do I need to change inside my mpi parallel code to run on infinipath environment ? Regards Yacob ----- Original Message ---- From: Andy Georgi <andy.geo...@zih.tu-dresden.de> To: Open MPI Users <us...@open-mpi.org> Sent: Sunday, April 20, 2008 9:23:19 AM Subject: Re: [OMPI users] Deci sion map for MPI collective operations Thanks a lot, i got it. Andy George Bosilca schrieb: > You need access to the source in order to look at the decision maps. > They are in ompi/mca/coll/tuned/coll_tuned_decision_fixed.c file. > > george. > > On Apr 19, 2008, at 3:41 AM, Andy Georgi wrote: > >> hello all, >> >> i want to measure the time needed for collective operations on a cluster >> by using ompi 1.2.5. i read that the algorithm which is used depends on >> msgsize and/or commsize and ompi constructs a decision map for the >> collective on the system. now my question: >> >> where can i find these decision map for my system? >> >> i'm no sysadmin, but i hope there is a way to get this information >> anyway ;-). >> >> regards, >> >> andy >> -- >> >> Dresden University of Technology >> Center for Information Services >> and High Performance Computing (ZIH) >> D-01062 Dresden >> Germany >> >> Phone: (+49) 351/463-38783 >> Fax: (+49) 351/463-38245 >> >> e-mail: andy.geo...@zih.tu-dresden.de >> WWW: http://www.tu-dresden.de/zih >> _______________________________________________ >> 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 -- Dresden University of Technology Center for Information Services and High Performance Computing (ZIH) D-01062 Dresden Germany Phone: (+49) 351/463-38783 Fax: (+49) 351/463-38245 e-mail: andy.geo...@zih.tu-dresden.de WWW: http://www.tu-dresden.de/zih _______________________________________________ users mailing list us...@open-mpi.org http://www.open-mpi.org/mailman/listinfo.cgi/users ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
