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August 14, 2014, 06:16 |
Tutorial 8 fails
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#1 |
New Member
Join Date: Aug 2014
Posts: 2
Rep Power: 0 |
Hi,
I’m new in SU2 and I am testing all the tutorials. I have had problems with the tutorials 7 and 8. I don’t know if this problem happens due to a bad installation or for another reason. I have run tutorial 7 and 8 as follow: · Tutorial 7 serial (FAILURE): >shape_optimization.py –f rotating_NACA0012.cfg –n 1 · Tutorial7 parallel (SUCCESS): >shape_optimization.py –f rotating_NACA0012.cfg –n 40 · Tutorial8 serial (FAILURE): > shape_optimization.py –f inv_ONERAM6_adv.cfg –n 1 · Tutorial8 parallel (FAILURE): >shape_optimization.py –f inv_ONERAM6_adv.cfg –n 40 Could it be a problem in the input file? I attached the last part of the Tutorial8 (in serial) output. Thanks for your help, Roberto |
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August 22, 2014, 14:54 |
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#2 | |
Super Moderator
Francisco Palacios
Join Date: Jan 2013
Location: Long Beach, CA
Posts: 404
Rep Power: 15 |
Quote:
Sometimes, once you are close to the local minimum, and due to the accuracy of the gradients, the optimizer tries big steps in the design variables that diverge the CFD code. Cheers, Francisco |
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August 27, 2014, 03:05 |
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#3 |
New Member
Join Date: Aug 2014
Posts: 2
Rep Power: 0 |
The tutorial 8 has already converged. However, I don’t understand what happens in tutorial 7, why are the results different in serial and in parallel?
The job has properly finished in parallel (80 iterations), but the job has stopped in serial (24 iterations). |
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