long time compiling (1h)- research shortcut

Ternox · July 31, 2014, 08:27

Dear all,

I am by now modifying the way equations are solved in OF221. To be precise, it is the method of solving the equation system with another method.

My problem is that it takes at least ONE hour to compile... and after, when I check the resolution, if I have done a mistake, it will take another hour to copile again.

Is there a shortcut so that I could recompile a part only or a way to be quicker ?

Thank you by advance and have a nice month of august !

Ternox

mturcios777 · August 5, 2014, 14:25

If you have a multicore machine, you can compile in parallel. You need to set the WM_NCOMPPROCs variable to the number of processors you want to use to compile. Other than that, if you are compiling the entire source tree (which seems like you need to if you are changing the solution method to something completely new) there is no shortcut as far as I know I'm afraid.

marupio · August 6, 2014, 04:13

Another thing you can do is create a separate library with your custom solver algorithm. That way you don't have to compile all of OpenFOAM, just the bits you're working with.

July 31, 2014, 08:27	long time compiling (1h)- research shortcut	#1
Ternox New Member Pierre D. Join Date: Dec 2011 Posts: 5 Rep Power: 14	Dear all, I am by now modifying the way equations are solved in OF221. To be precise, it is the method of solving the equation system with another method. My problem is that it takes at least ONE hour to compile... and after, when I check the resolution, if I have done a mistake, it will take another hour to copile again. Is there a shortcut so that I could recompile a part only or a way to be quicker ? Thank you by advance and have a nice month of august ! Ternox

August 6, 2014, 04:13		#3
marupio Senior Member David Gaden Join Date: Apr 2009 Location: Winnipeg, Canada Posts: 437 Rep Power: 21	Another thing you can do is create a separate library with your custom solver algorithm. That way you don't have to compile all of OpenFOAM, just the bits you're working with. __________________ ~~~ Follow me on twitter @DavidGaden

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August 5, 2014, 14:25		#2
mturcios777 Senior Member Marco A. Turcios Join Date: Mar 2009 Location: Vancouver, BC, Canada Posts: 740 Rep Power: 28	If you have a multicore machine, you can compile in parallel. You need to set the WM_NCOMPPROCs variable to the number of processors you want to use to compile. Other than that, if you are compiling the entire source tree (which seems like you need to if you are changing the solution method to something completely new) there is no shortcut as far as I know I'm afraid.