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Fire Dynamics Simulator
https://pages.nist.gov/fds-smv/
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Multiple Mesh communication errors #2383

Closed gforney closed 9 years ago

gforney commented 9 years ago 
Please complete the following lines...

FDS Version: 6.2.0
SVN Revision Number: 22455
Compile Date: Tue, 21 Apr 2015
Smokeview Version/Revision:
Operating System: Linux 

Describe details of the issue below:

Hello Developer,

I stimulated my project case in cluster with FDS 6.2.0, the result shows there is flow
blockage between each floor except the ground floor and the second floor. Please see
the figure and the simplified FDS input.

However, I run the model in my laptop with version 6.1.2 it works. I have tried different
mesh combination and still not able to fix it, can you help me to detect the problem?

Many thanks,
Shawn

Original issue reported on code.google.com by Shawn.situ on 2015-04-28 20:39:38

gforney commented 9 years ago 
I'll take a look at it.

Original issue reported on code.google.com by mcgratta on 2015-04-28 21:23:19

gforney commented 9 years ago 
I see flow crossing all mesh boundaries. What are those pink things in your 6.1.2 image?

Original issue reported on code.google.com by mcgratta on 2015-04-28 21:35:03

gforney commented 9 years ago 
Hi Developer,

Thanks for your help,

Those pink things are the computer servers, they are trying to draw the cold air from
left and right cold corridors and exhaust at common outlet

I have removed it and other major obstructions in the FDS 6.2.0 input file simplified
the process.

Regards,
Shawn

Original issue reported on code.google.com by Shawn.situ on 2015-04-28 21:43:23

gforney commented 9 years ago 
I cannot see what is wrong with your case. It appears that gases are flowing between
meshes. If there is still something wrong, simplify the case to a point where the problem
is obvious.

Original issue reported on code.google.com by mcgratta on 2015-04-29 12:31:08

gforney commented 9 years ago 
I don't know why, from your figure it does show gases flowing between meshes, but i
when  run in the cluster it gave me the result as first figure case2v1d. Do you run
the case is fds_mpi approach?

I also have a simpler case, there is no flow when i used 3 mesh running at cluster.

Thanks for the analysis

Original issue reported on code.google.com by Shawn.situ on 2015-04-29 14:56:26

gforney commented 9 years ago 
I see flow moving through the mesh interfaces. Are you sure the case is running? Are
you sure that three MPI processes have been successfully launched? Look at the .out
file. Do you see that the time stepping has begun?

Original issue reported on code.google.com by mcgratta on 2015-04-29 15:38:43

gforney commented 9 years ago 
Hi developer, the time step is moving. Not sure if I understand you meaning correctly,
so i attached the 3 meshes case out file and the previous case2v1d. out file

Original issue reported on code.google.com by Shawn.situ on 2015-04-29 16:56:51

gforney commented 9 years ago 
Are you compiling the code yourself?

Original issue reported on code.google.com by mcgratta on 2015-04-29 17:09:40

gforney commented 9 years ago 
No, I asked someone who working on the HPC cluster side to install and compile for me.
So is it possible there's something wrong in MPI processing installation?

Original issue reported on code.google.com by Shawn.situ on 2015-04-29 17:27:16

gforney commented 9 years ago 
The SVN number in the .out file is 22455. This is not a release version. It might have
some errors in it. You can check here:

https://code.google.com/p/fds-smv/wiki/Firebot_Build_Status

to see if a particular SVN number has passed our nightly tests. I don't think SVN 22455
passes. I suggest you build the most recent test version (just update your SVN repository
and recompile), or use the official release version.

Original issue reported on code.google.com by mcgratta on 2015-04-29 17:49:40