Dear Thomas, could you please test the following: srun cfx5solve -batch -parallel -partition $SLURM_NTASKS -def job.def -par-dist "$CFXHOSTS" -start-method "Intel MPI Distributed Parallel". Best Marcus On 2/12/19 11:10 AM, Gier, Thomas wrote:

Hello,

I'm having issues running ANSYS CFX calculations across multiple nodes. Single-node simulations run fine, but multi-node configurations crash because ssh connections are being denied:

" +--------------------------------------------------------------------+ | An error has occurred in cfx5solve: | | | | Remote connection to ncm0791.hpc.itc.rwthaachen.de | | (ncm0791.hpc.itc.rwth-aachen.de) could not be started, or exited | | with return code 255. It gave the following output: | | | | Permission denied (publickey,gssapi-keyex,gssapi-with-mic,pass- | | word,hostbased). | | | | Check that you have typed the hostname correctly, and that you | | have an account "tg084461" on the specified host with access | | permission from this host. You can use the following command to | | check the connection to a UNIX machine: | | | | ssh ncm0791.hpc.itc.rwth-aachen.de uname | +--------------------------------------------------------------------+"

Am I missing something in my submission script, or is this a cluster config issue?

Regards, Thomas Gier

_______________________________________________ claix18-slurm-pilot mailing list -- claix18-slurm-pilot@lists.rwth-aachen.de To unsubscribe send an email to claix18-slurm-pilot-leave@lists.rwth-aachen.de

-- Marcus Wagner, Dipl.-Inf. IT Center Abteilung: Systeme und Betrieb RWTH Aachen University Seffenter Weg 23 52074 Aachen Tel: +49 241 80-24383 Fax: +49 241 80-624383 wagner@itc.rwth-aachen.de www.itc.rwth-aachen.de