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
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
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Gier, Thomas -
Marcus Wagner