Parallel processing problem ("cores")

cdgatti · October 29, 2013, 08:05

Hi,

Working in parallel with the 6.3.26 version of Fluent-t8, with a mesh of 7,000,000 elements, read the mesh and perform the setting of the simulation correctly, but to make the run (iterations) do not work the 8 cores and takes so much!

Someone pass the same? to that is the error?

I hope their views

Thank you very much

flow_CH · October 29, 2013, 09:39

It maybe you are not using parallel processing. try this: right click on fluent desktop icon, on the fluent path add -tn (n=no of processor in CPU, e.g. -t2). for my computer it's
C:\Fluent.Inc\ntbin\ntx86\fluent.exe -r6.3.26 2d -t3
you should insert this address
C:\Fluent.Inc\ntbin\ntx86\fluent.exe -r6.3.26 2d -t8
If you are modeling 3d insert 3d

vasava · October 29, 2013, 09:41

Do you have academic license? Those have restrictions about number of nodes you could use.

Are you using any UDF?

cdgatti · October 29, 2013, 09:54

Thanks for the reply flow_CH.

Now I have the commands as you propose: C: \ Fluent.Inc \ ntbin \ win64 \ fluent.exe 3d-t8-r6.3.26

In fact, I made the partition in 8 correctly, starts with FMG perfect, but when iterating cores do not work.

Any other ideas?

cdgatti · October 29, 2013, 09:56

Vasava: not an academic license should not have size limitation problem and do not use a UDF.
In addition, some upper size models working properly.

Any other ideas?

cdgatti · October 29, 2013, 10:04

The model is of a complete vehicle, with ground and rolling wheels. It has two "porous volumes" that model the radiators.

October 29, 2013, 08:05	Parallel processing problem ("cores")	#1
cdgatti New Member Claudio Join Date: Jun 2013 Posts: 8 Rep Power: 13	Hi, Working in parallel with the 6.3.26 version of Fluent-t8, with a mesh of 7,000,000 elements, read the mesh and perform the setting of the simulation correctly, but to make the run (iterations) do not work the 8 cores and takes so much! Someone pass the same? to that is the error? I hope their views Thank you very much

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October 29, 2013, 09:39		#2
flow_CH Senior Member FHydro Join Date: Jan 2013 Posts: 197 Rep Power: 13	It maybe you are not using parallel processing. try this: right click on fluent desktop icon, on the fluent path add -tn (n=no of processor in CPU, e.g. -t2). for my computer it's C:\Fluent.Inc\ntbin\ntx86\fluent.exe -r6.3.26 2d -t3 you should insert this address C:\Fluent.Inc\ntbin\ntx86\fluent.exe -r6.3.26 2d -t8 If you are modeling 3d insert 3d

October 29, 2013, 09:41		#3
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 23	Do you have academic license? Those have restrictions about number of nodes you could use. Are you using any UDF?

October 29, 2013, 09:54		#4
cdgatti New Member Claudio Join Date: Jun 2013 Posts: 8 Rep Power: 13	Thanks for the reply flow_CH. Now I have the commands as you propose: C: \ Fluent.Inc \ ntbin \ win64 \ fluent.exe 3d-t8-r6.3.26 In fact, I made the partition in 8 correctly, starts with FMG perfect, but when iterating cores do not work. Any other ideas?

October 29, 2013, 09:56		#5
cdgatti New Member Claudio Join Date: Jun 2013 Posts: 8 Rep Power: 13	Vasava: not an academic license should not have size limitation problem and do not use a UDF. In addition, some upper size models working properly. Any other ideas?

October 29, 2013, 10:04		#6
cdgatti New Member Claudio Join Date: Jun 2013 Posts: 8 Rep Power: 13	The model is of a complete vehicle, with ground and rolling wheels. It has two "porous volumes" that model the radiators.