Re: [Mingw-users] OpenMP Not Using Both Cores? What am I missing?

[Danny S. <dan...@cl...>]

-----Original Message-----
From: min...@li...
[mailto:min...@li...] On Behalf Of Lawrence
Spector
Sent: Thursday, 27 December 2007 5:57 a.m.
To: 'min...@li...'
Subject: [Mingw-users] OpenMP Not Using Both Cores? What am I missing?


I'm on a dual core machine.  To demonstrate the issue I'm having, here's
a simple snippet of code I got from
http://kallipolis.com/openmp/taylor_mp.c (except in this example, I put
it in a source file called OpenMPMain.cpp).  When I run the code in
Visual C++ 2005 with the OpenMP flag, it slams both cores at 100%.  With
the same code in MinGW 4.2.1-dw2, it only slams one core at 100%,
instead of both.  I'm assuming perhaps I've missed a flag or something 

You need to rebuild libgomp with this patch

 http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=128321

Danny