referencing profile .csv file when solving on HPC

cole18 · July 10, 2021, 00:01

I am trying to run a simulation on my universities cluster to find the aerodynamic damping of an airfoil. I am using mesh deformation with a .csv file from a modal analysis for the profile. I am setting up the simulation on my PC so the profile is pointing towards the .csv file on my computer. The issue I am having now is when I transfer the .def file onto the cluster and try to run it, it cannot find the profile .csv file which is on my computer. Even if I transfer the .csv file also it is still trying to search in the wrong place for it. Is there any way I can get it set up so it will be able to find the csv file while running on the cluster?

aero_head · July 10, 2021, 00:43

I have done what you are describing, so I know it is possible. Are you sure you saved the csv file to the correct folder? Where are you trying to save it and where is it trying to search for it?

cole18 · July 10, 2021, 00:51

I have the csv file in the same folder as the .def file on the cluster. The problem is the path to that file is different on the cluster vs. my computer. So in CFX pre it was set up pointing to the file but that path does not exist on the cluster which is causing the error where it cannot find it.

aero_head · July 10, 2021, 00:54

Oh, so you're running the simulation with a bash script?

cole18 · July 10, 2021, 00:54

Yup, I'm running it with a bash script.

aero_head · July 10, 2021, 01:03

Ah, okay. Sorry, I have only done this with CFX installed on the HPC I was using. I do not know why it isn't working for you... Can't you change the path in the script?

cole18 · July 10, 2021, 01:22

If you can change the path in the script I am not aware of how. Looking at the documentation for cfx5solve I don't see any option that seems like it would change the path.

ghorrocks · July 10, 2021, 05:17

Try changing the path to the csv file to .\FileName.csv, and keep the csv file in the local directory. Hopefully it does not resolve that to the absolute path and just keeps it as a relative path.

cole18 · July 10, 2021, 10:22

That didn't work but trying to do that I figured it out. There was a drop down with default setting of referencing external file that has the option to copy profile data into the file so that ended up working for me. Thanks for all of the help.

Opaque · July 10, 2021, 15:24

What version of the software are you running?

Later versions allow you to include the .csv file into the definition file during import; therefore, there is no longer a need to keep your imported .csv files around.

The cfx5solve script will extract the file at run-time wherever the simulation is being executed.

cole18 · July 10, 2021, 18:09

Quote:

Originally Posted by Opaque

What version of the software are you running?

Later versions allow you to include the .csv file into the definition file during import; therefore, there is no longer a need to keep your imported .csv files around.

The cfx5solve script will extract the file at run-time wherever the simulation is being executed.

2020r2. Yup that worked. I had missed that option earlier because I didn’t think it would have any useful options in the drop down but it did. Thanks

July 10, 2021, 00:01	referencing profile .csv file when solving on HPC	#1
cole18 New Member Join Date: Jul 2021 Posts: 6 Rep Power: 5	I am trying to run a simulation on my universities cluster to find the aerodynamic damping of an airfoil. I am using mesh deformation with a .csv file from a modal analysis for the profile. I am setting up the simulation on my PC so the profile is pointing towards the .csv file on my computer. The issue I am having now is when I transfer the .def file onto the cluster and try to run it, it cannot find the profile .csv file which is on my computer. Even if I transfer the .csv file also it is still trying to search in the wrong place for it. Is there any way I can get it set up so it will be able to find the csv file while running on the cluster?

July 10, 2021, 05:17		#8
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	Try changing the path to the csv file to .\FileName.csv, and keep the csv file in the local directory. Hopefully it does not resolve that to the absolute path and just keeps it as a relative path. aero_head likes this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

July 10, 2021, 10:22		#9
cole18 New Member Join Date: Jul 2021 Posts: 6 Rep Power: 5	That didn't work but trying to do that I figured it out. There was a drop down with default setting of referencing external file that has the option to copy profile data into the file so that ended up working for me. Thanks for all of the help. aero_head likes this.

July 10, 2021, 15:24		#10
Opaque Senior Member Join Date: Jun 2009 Posts: 1,880 Rep Power: 33	What version of the software are you running? Later versions allow you to include the .csv file into the definition file during import; therefore, there is no longer a need to keep your imported .csv files around. The cfx5solve script will extract the file at run-time wherever the simulation is being executed. aero_head likes this. __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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July 10, 2021, 00:43		#2
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 9	I have done what you are describing, so I know it is possible. Are you sure you saved the csv file to the correct folder? Where are you trying to save it and where is it trying to search for it?

July 10, 2021, 00:51		#3
cole18 New Member Join Date: Jul 2021 Posts: 6 Rep Power: 5	I have the csv file in the same folder as the .def file on the cluster. The problem is the path to that file is different on the cluster vs. my computer. So in CFX pre it was set up pointing to the file but that path does not exist on the cluster which is causing the error where it cannot find it.

July 10, 2021, 00:54		#4
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 9	Oh, so you're running the simulation with a bash script?

July 10, 2021, 01:03		#6
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 9	Ah, okay. Sorry, I have only done this with CFX installed on the HPC I was using. I do not know why it isn't working for you... Can't you change the path in the script?

July 10, 2021, 01:22		#7
cole18 New Member Join Date: Jul 2021 Posts: 6 Rep Power: 5	If you can change the path in the script I am not aware of how. Looking at the documentation for cfx5solve I don't see any option that seems like it would change the path.