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Old   May 12, 2016, 10:07
Default Parallel Computation Troubles
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Hello everyone,

I am a new SU2 user and I have been working my way through the tutorials to gain a better understanding of the program. As of current I have been completing all simulations in serial however I have now chosen to swap over to parallel to take full advantage of my computer. To do this I have re-downloaded SU2 and ran the needed to configuration to enable MPI and METIS. However when I attempt to run the ONERAM6 turbulent test case the system appears to run 12 serial computations (one on each core) rather than a single parallel computation. The mesh and configuration files I have used were both provided by SU2 so I feel that the error must be either in my installation of the parallel code or in the command line input. To aid in your understanding I have attached a .txt file containing the terminal readout which includes the initial command line input. Any help that you guys can provide me with would be great appreciated.

All the Best,
Blair
Attached Files
File Type: txt SU2_turb_ONERAM6_Readout.txt (109.7 KB, 3 views)
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Old   May 13, 2016, 01:24
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Quote:
Originally Posted by climenha View Post
Hello everyone,

I am a new SU2 user and I have been working my way through the tutorials to gain a better understanding of the program. As of current I have been completing all simulations in serial however I have now chosen to swap over to parallel to take full advantage of my computer. To do this I have re-downloaded SU2 and ran the needed to configuration to enable MPI and METIS. However when I attempt to run the ONERAM6 turbulent test case the system appears to run 12 serial computations (one on each core) rather than a single parallel computation. The mesh and configuration files I have used were both provided by SU2 so I feel that the error must be either in my installation of the parallel code or in the command line input. To aid in your understanding I have attached a .txt file containing the terminal readout which includes the initial command line input. Any help that you guys can provide me with would be great appreciated.

All the Best,
Blair
This is a sign that the code has not been compiled correctly for parallel computations. One thing to check is to make sure that no previous installations are being called, and otherwise to double check that you have configured for parallel installation and installed all dependencies (mpi).

https://github.com/su2code/SU2/wiki/Parallel-Build
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Old   May 13, 2016, 12:45
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Hi Heather,

Thank you for your reply, I had the same suspicion as you that a previous installation of SU2 was being called. How would one check for/change which installation is being called? I must apologize for my lack of knowledge, I am extremely new to Linux.
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Old   May 16, 2016, 09:40
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Solved the problem. The problem arose from the "--with-cc=/path/to/mpicc" input during the configuration process.
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