Dear Sagar, ambavale sagar wrote: > Dear PwScf users, > I am getting MPI error during PWCOND run at particular point. The > standard output gives: > > MPI_Allreduce: invalid communicator: Unknown error 2064 (rank 0, comm 16) > Rank (0, MPI_COMM_WORLD) : Call stack within LAM: > Rank (0, MPI_COMM_WORLD) : -MPI_Allreduce() > Rank (0, MPI_COMM_WORLD) : -main() > ------------------------------------------------------ > One of the processes started by mpirun has exited with a nonzero > exit........ > ... > .. > .. > PID 16077 failed on node n1 (192.168.0.12) with exit status 1. > -----------------------------
Is the error reproducible? Have you managed to run in parallel pw.x+pwcond.x for a smaller system that, let's say, can be done on 2 cpus? > > > I am running espresso-4.0 installed with lam-mpi 7.1.4 and ifort 10.1 on > dual cpu quad core xeon processors. There are 2 machines running in > parallel. Thus 4 cpus or 16 cores are available. However, this > calculation was ran on 4 cores only. The scf and relax calculations do > not crash. One more thing to note is: recently I have enhanced RAM on > both the machines. And after enhnacement did not do any reinstallation > or recompilation of any software including lam-mpi. I don't think this is needed. You simply need to reboot the machine and see if the OS sees the new RAM banks, I suppose. > > Note : Through search on forum archives I found a post by Derek : > http://www.democritos.it/pipermail/pw_forum/2005-November/003219.html > which indicates this might be a problem related to mpi or def.h...... > > > Thank you. > > Regards > Sagar Ambavale > PhD Student > The M.S. Uni. of Baroda > India > > ------------------------------------------------------------------------ > Now, send attachments up to 25MB with Yahoo! India Mail. Learn how > <http://in.rd.yahoo.com/tagline_galaxy_2/*http://in.overview.mail.yahoo.com/photos>. > > > ------------------------------------------------------------------------ > > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://www.democritos.it/mailman/listinfo/pw_forum -- o ------------------------------------------------ o | Gabriele Sclauzero, PhD Student | | c/o: SISSA & CNR-INFM Democritos, | | via Beirut 2-4, 34014 Trieste (Italy) | | email: sclauzer at sissa.it | | phone: +39 040 3787 511 | | skype: gurlonotturno | o ------------------------------------------------ o
