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Simulation CFD

Posts: 4
Registered: ‎04-08-2013

Sim 360 CFD Cloud Analysis Hanging/not Completing

143 Views, 2 Replies
07-03-2013 10:42 AM

Hi Team,


I have been having issues with CFD analyses sent to the Cloud not completing. There is generally not a "Failed" response from the Cloud servers... the analysis just seem to hang.


These have generally been on large free surface models that take 24 hours or more to run. The analysis will typically hang after 4-12 hours.


There have been theories that the antivirus on my local machine or the company network firewall is the root cause.


Has anyone else experienced this problem and could you please share any solutions you developed to counteract this problem.


Thank you!

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Product Support
Posts: 972
Registered: ‎08-25-2011

Re: Sim 360 CFD Cloud Analysis Hanging/not Completing

07-04-2013 02:11 AM in reply to: grehod



What stage is this model at within the job manager? Has it completed the run?

I find it usually can take a while to download, expecially if you have many save intervals.


You can reduce the amount of data sent back on these runs by activating these flags:

send_rvq_file 0

send_intermediate_req_files 0

send_res_files 0


You will still be able to animate through the results once you have them locally.


I ran a large free surface model yesterday (12m elements) and I am sure I will have to leave it overnight to download the files...



Jon Wilde
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Posts: 4
Registered: ‎04-08-2013

Re: Sim 360 CFD Cloud Analysis Hanging/not Completing

07-08-2013 11:52 AM in reply to: grehod

Hi Jon,


Sometimes the model will hang around a quarter to halfway through. Other times the screen display will stop updating ~80% through, the job manager will report the job as finished and there will be some large (2.8 GB) zipped files in the "from server" result folders. However the results are not being compiled to be readable.


I have waited 24 hours or more to see if the download will complete or the results will be uncompressed - but no luck yet.


I have been working with Todd Alford on this - but was also hoping to find some users that have found solutions.


Todd suspect antivirus or firewall interference. I need to pin down our IT guys to open some ports in the firewall as a next step test.


Thanks for the reply and support!



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