Learning Forum

[user6206]

I have been asked to assist a faculty member with determining what needs to be installed and configured so that their research group can submit Ansys jobs to a remote HPC cluster. I have gathered that they should be able to use Ansys RSM in order to submit the jobs as the remote cluster appears to be using PBS Pro for job scheduling. However, I have two remaining questions that I cannot seem to find concrete answers for:nQ1: Is a particular Ansys license needed in order to submit jobs to a remote HPC cluster? Our account manager has confirmed that we currently have the following licenses:nANSYS Academic Research Mechanical and CFD (5 tasks)nANSYS Academic Teaching Mechanical (25 tasks)nQ2: What exactly needs to be installed on the HPC cluster in order to solve Ansys jobs? I believe they are using the Ansys Structures package on their local workstations. If that's the case, does the Ansys Structures package need to be available on the cluster? Does RSM need to be available on the cluster if we are already running a central RSM locally?nThanks in advance for any advice/assistance that can be offered!n

[ANSYS_MMadore]

Q1: There is no special license needed, though you may want to invest in additional HPC licenses.nQ2: Regarding what to install, you would need to have RSM installed on the cluster as well as the solvers installed on the cluster. If the faculty member has access to the ANSYS Customer Portal there are useful tutorials and guides available in the ANSYS RSM Documentation.nnThanks,nMattn

[user6206]

Matt, thanks so much for the help! I've got a couple of follow up questions:Q1:So when you say additional HPC licenses, are you simply referring to additional ANSYS licenses that would be utilized by the HPC cluster? You are not referring to a HPC-specific ANSYS license, correct? Q2:Just to make sure I understand this correctly, basically the HPC cluster needs to have the same solver version and type(s) available that would be used on the end-user's workstation (if they weren't solving jobs on a HPC cluster), correct? nAfter reading back through some RSM documentation, it sounds like we won't need RSM or the Launcher Server installed on the HPC cluster since we only have access to it via SSH. With SSH-only access, it appears that a local RSM instance will just communicate with PBS on the remote cluster via SSH and use SSH to transfer files. Am I understanding that correctly?

[ANSYS_MMadore]

1) I'm referring to actual HPC specific licenses, licenses which are used entirely to access more cores on an analysis.n2) Correct!nYes, you are correct.n

[user6206]

Q1: Okay, that makes sense. So based on the information I found at the following link [https://www.ansys.com/academic/educator-tools/high-performance-computing], our academic license limits a user to using 16 CPU cores per task. If a user wants to use more cores than that for a solving task, we'll need to purchase add-on HPC licenses. Am I understanding that correctly?n

[ANSYS_MMadore]

Yes, that is exactly right.n

[yskalencat]

Starting Ansys RSM Cluster Node Service ...nThis process is being run as an Administrator.nDatabase Directory is: /root/.ansys/v193/ARCnThe UpdateMasterLoad method failed to update execution node load table to master: nid00032:13193.n

[yskalencat]

I am installing Ansys2019R1 on CRAY HPC but when I tried to excute the arcnode start command it gives the above error. There is no firewall problem but the arcnode on compute-node is not able to communicate to master node on head-node. n