Parallelization of code

Danath · February 18, 2015, 18:46

Hello

I write,add a piece of a code in ParamagneticForce.C. Although the results are very good in serial processing there is a big difference in parallel.

I think that after the decomposition of the geometry the processors are worked only in the domain that they are obligated and not communicate with each other.

Is this true? Am i missing something ?

If this is true , how can i fix the problem ? is there any tutorial ?

the version that i use is OF 2.2.1

alexeym · February 19, 2015, 02:38

Hi,

If you would like to get general answer, then yes, you are right, you are missing something.

If you post the code you have added, people will be able to tell you how to change it to make it run correctly in parallel.

February 18, 2015, 18:46	Parallelization of code	#1
Danath Member Evangelos Join Date: Sep 2011 Posts: 87 Rep Power: 14	Hello I write,add a piece of a code in ParamagneticForce.C. Although the results are very good in serial processing there is a big difference in parallel. I think that after the decomposition of the geometry the processors are worked only in the domain that they are obligated and not communicate with each other. Is this true? Am i missing something ? If this is true , how can i fix the problem ? is there any tutorial ? the version that i use is OF 2.2.1

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
The FOAM Documentation Project - SHUT-DOWN	holger_marschall	OpenFOAM	242	March 7, 2013 12:30
How to make code run in parallel?	cwang5	OpenFOAM Programming & Development	1	May 30, 2011 04:47
Open Source Vs Commercial Software	MechE	OpenFOAM	28	May 16, 2011 11:02
Small 3-D code	Zdravko Stojanovic	Main CFD Forum	2	July 19, 2010 10:11
public CFD Code development	Heinz Wilkening	Main CFD Forum	38	March 5, 1999 11:44

February 19, 2015, 02:38		#2
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	Hi, If you would like to get general answer, then yes, you are right, you are missing something. If you post the code you have added, people will be able to tell you how to change it to make it run correctly in parallel.