parallel and serial

ehooi · January 12, 2011, 04:44

Hi guys,
I have a question on FLUENT parallel processing. When I start up my FLUENT, I selected parallel for the processing option and 4 processors in a local machine (Win64 workstation, running Ansys 12).

However, I did not do any manual or auto-partitioning on my model. In that case, when I solve my problem, is it still being solved through a parallel processing option or a serial option?

The reason I am asking is because I am developing UDFs and I am not sure if my UDF should be written for a parallel processing problem. My current UDFs has been having problems compiling. I do not get the successful compilation message as mentioned in the FLUENT UDF manual.

Thanks in advance.

Cheers,
EH

DoHander · January 12, 2011, 08:06

Hello,
you can simply check on Windows if your Fluent actually runs in parallel by launching Taskmanager, check the resources tab and you should see all your processors up.

If you intend to use a UDF with the parallel solver, you need to code this for parallelism (see UDF manual). Also the compilation must be done after you've launched Fluent parallel.

Do

January 12, 2011, 04:44	parallel and serial	#1
ehooi Member EH Join Date: Dec 2010 Posts: 61 Rep Power: 15	Hi guys, I have a question on FLUENT parallel processing. When I start up my FLUENT, I selected parallel for the processing option and 4 processors in a local machine (Win64 workstation, running Ansys 12). However, I did not do any manual or auto-partitioning on my model. In that case, when I solve my problem, is it still being solved through a parallel processing option or a serial option? The reason I am asking is because I am developing UDFs and I am not sure if my UDF should be written for a parallel processing problem. My current UDFs has been having problems compiling. I do not get the successful compilation message as mentioned in the FLUENT UDF manual. Thanks in advance. Cheers, EH

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Poisson eq w setReference works serial diverges in parallel	tehache	OpenFOAM Running, Solving & CFD	5	August 29, 2012 09:41
Serial vs parallel different results	luca	OpenFOAM Bugs	2	December 3, 2008 10:12
Differences between serial and parallel runs	carsten	OpenFOAM Bugs	11	September 12, 2008 11:16
Help: Serial code to parallel but even slower	Zonexo	Main CFD Forum	4	May 14, 2008 10:26
Parallel convergence worse than serial!	Michael B	FLUENT	3	December 9, 2006 21:46

January 12, 2011, 08:06		#2
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 19	Hello, you can simply check on Windows if your Fluent actually runs in parallel by launching Taskmanager, check the resources tab and you should see all your processors up. If you intend to use a UDF with the parallel solver, you need to code this for parallelism (see UDF manual). Also the compilation must be done after you've launched Fluent parallel. Do