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Host Node Allocation (-ssh and -cx) on Linux HPC |
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October 10, 2019, 09:51 |
Host Node Allocation (-ssh and -cx) on Linux HPC
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#1 |
Member
Sebi
Join Date: Mar 2019
Posts: 49
Rep Power: 7 |
Hi All,
When launching fluent from command line, it seems to be setting up "-ssh" for a connection to the host node and then connecting to the host node using a command in my case looks like "-cx nodename:1234:5678". Currently this host node is always the first node alphabetically, which is causing me issues. I would like to manually specify which node is the host node when I launch using the same "-cx" command. I can put the "nodename" in fine, but those numbers afterwards I am struggling with. What are they? They seem to be different depending on the host node, and have seen them in other peoples outputs but can't work out what they are or how its getting them. |
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October 10, 2019, 10:58 |
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#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,754
Rep Power: 66 |
port numbers and/or port number ranges
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October 10, 2019, 11:01 |
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#3 | |
Member
Sebi
Join Date: Mar 2019
Posts: 49
Rep Power: 7 |
Quote:
fluent 3ddp -g -pinfiniband -mpi=intel -t200 -cnf=nodefile -i input.commands Changing this allocation of the host node looks like a total pain, do you know any way to do it? Simply adding "-cx" doesnt work from the command line launch like I intended, it always gets blocked by the firewall presuambly because the ssh isnt setup at that point. |
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October 10, 2019, 11:46 |
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#4 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,754
Rep Power: 66 |
The head node is also determined at the job scheduler level. I.e., the head node is the node that the command gets sent to:
Code:
fluent 3ddp -g -pinfiniband -mpi=intel -t200 -cnf=nodefile -i input.commands What job scheduler are you using? Last edited by LuckyTran; October 10, 2019 at 15:16. |
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Tags |
command, host, hpc, linux, node |
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