Dear Dr. Ronald and Dr. Peter, I have a 4 core laptop, and I am using 'Simfactory' command to run the par file. I have tested both of your suggestions. The addition of "--cores=2 --num-threads=1" gives me the attached error while the "--cores=4 --num-threads=2" option gives, "Error: Too many nodes specified: nodes=2 (maxnodes is 1)
Aborting Simfactory". Thanks Best, KS On Tue, Jan 19, 2021 at 11:29 PM <[email protected]> wrote: > Send Users mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.einsteintoolkit.org/mailman/listinfo/users > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Users digest..." > > > Today's Topics: > > 1. TAT/ Slab Error (KARIMA SHAHZAD) > 2. Re: TAT/ Slab Error (Peter Diener) > 3. Agenda for Thursday's Meeting ([email protected]) > 4. Re: TAT/ Slab Error (Roland Haas) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 18 Jan 2021 17:41:04 +0000 > From: KARIMA SHAHZAD <[email protected]> > Subject: [Users] TAT/ Slab Error > To: "[email protected]" <[email protected]> > Message-ID: > < > db7pr07mb5435b609daf0209b60980c8e8c...@db7pr07mb5435.eurprd07.prod.outlook.com > > > > Content-Type: text/plain; charset="iso-8859-1" > > Hello there, > > Here is the error attached I encountered while evolving black holes > binary. The work-around I guess is to increase the number of processes (if > I am not wrong), but I am not quite sure how to do that. I need some help > to get around this issue. > > Thanks in advance > > Best regards, > KS > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://lists.einsteintoolkit.org/pipermail/users/attachments/20210118/64c8b97d/attachment-0001.html > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: bbhHr.err > Type: application/octet-stream > Size: 1075 bytes > Desc: bbhHr.err > Url : > http://lists.einsteintoolkit.org/pipermail/users/attachments/20210118/64c8b97d/attachment-0001.obj > > ------------------------------ > > Message: 2 > Date: Mon, 18 Jan 2021 14:19:02 -0600 (CST) > From: Peter Diener <[email protected]> > Subject: Re: [Users] TAT/ Slab Error > To: KARIMA SHAHZAD <[email protected]> > Cc: "[email protected]" <[email protected]> > Message-ID: <[email protected]> > Content-Type: text/plain; charset="iso-8859-1" > > Hi Karima, > > Yes, that parameter file requires at least 2 mpi processes to run. > > You seem to have submitted using simfactory and ended up running on 1 > mpi process awith 2 openmp threads. If you instead do something like > > simfactory/bin/sim run bbhHr --cores=2 --num-threads=1 > > if you're on a workstation that doesn't use a queueing system or > > simfactory/bin/sim submit bbhHr --cores=2 --num-threads=1 > > if you're on a cluster. This should give you 2 mpi processes running on > 1 openmp thread each. You might have to add other options to simfactory > if you did so in your original run. > > Cheers, > > Peter > > On Monday 2021-01-18 11:41, KARIMA SHAHZAD wrote: > > >Date: Mon, 18 Jan 2021 11:41:04 > >From: KARIMA SHAHZAD <[email protected]> > >To: "[email protected]" <[email protected]> > >Subject: [Users] TAT/ Slab Error > > > >Hello there,? > > > >Here is the error attached I encountered while evolving black holes > binary. > >The work-around I guess is to increase the number of processes (if I am > not > >wrong), but I am not quite sure how to do that. I need some help to get > >around this issue. > > > >Thanks in advance > > > >Best regards, > >KS > > > > > > > > ------------------------------ > > Message: 3 > Date: Mon, 18 Jan 2021 15:18:01 -0600 > From: [email protected] > Subject: [Users] Agenda for Thursday's Meeting > To: [email protected] > Message-ID: <E1l1buT-009sDh-Ev@ekohaes8> > Content-Type: text/plain; charset="ANSI_X3.4-1968" > > Please update the Wiki with agenda items for Thursday's meeting. Thanks! > > https://docs.einsteintoolkit.org/et-docs/meeting_agenda > > --The Maintainers > > > ------------------------------ > > Message: 4 > Date: Mon, 18 Jan 2021 16:17:32 -0600 > From: Roland Haas <[email protected]> > Subject: Re: [Users] TAT/ Slab Error > To: KARIMA SHAHZAD <[email protected]> > Cc: "[email protected]" <[email protected]> > Message-ID: <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > Hello Karima, > > > Here is the error attached I encountered while evolving black holes > > binary. The work-around I guess is to increase the number of > > processes (if I am not wrong), but I am not quite sure how to do > > that. I need some help to get around this issue. > Assuming you use simulation factory you need to pass options to make > sure it creates multiple MPI processes. The auto-detection code tends > to choose a number of threads equal to the the number of cores on your > laptop and and a single MPI rank. > > Eg if you have a 4 core laptop then you have to use: > > ./simfactory/bin/sim submit testrun01 --cores 4 --num-threads 2 > --parfile ... > > which uses a total of 4 cores and starts 2 threads per MPI rank so that > you end up with 4 / 2 = 2 MPI ranks each of which uses 2 threads. > > Similarly on clusters, the basic idea is to set --num-threads so that > there are more than 1 MPI rank started (ie --num-threads is larger than > the value for --cores or --procs [which are synonyms for each other]). > > If not using simulation factory you have to manually use mpirun and > OMP_NUM_THREADS. Eg: > > export OMP_NUM_THREADS=2 > > mpirun -np 2 /home/karima/simulations/bbhHr/SIMFACTORY/exe/cactus_sim > -L 3 /home/karima/simulations/bbhHr/output-0000/BBHHigherRes.par > > which starts 2 MPI ranks each will use 2 OpenMP threads. > > Yours, > Roland > > -- > My email is as private as my paper mail. I therefore support encrypting > and signing email messages. Get my PGP key from http://pgp.mit.edu . > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: not available > Type: application/pgp-signature > Size: 833 bytes > Desc: OpenPGP digital signature > Url : > http://lists.einsteintoolkit.org/pipermail/users/attachments/20210118/78ab7576/attachment-0001.bin > > ------------------------------ > > _______________________________________________ > Users mailing list > [email protected] > http://lists.einsteintoolkit.org/mailman/listinfo/users > > > End of Users Digest, Vol 130, Issue 18 > ************************************** >
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