[mpich-discuss] Upgrading GCC Compilers

[Dave Goodell]

If the only thing you are upgrading is the compiler, you probably don't need to rebuild MPICH2, particularly since it would be a 4.x-->4.x change.  However, depending on how/where you install the new compiler, the mpicc/mpif77/etc compiler wrapper scripts may still point to the old compiler.

You can see the compile/link line that will be used by mpicc by running "mpicc -show".

-Dave

On Aug 30, 2010, at 5:27 AM CDT, saar raas wrote:

> Hello,
> 
> I have installed mpich2 on centos 5.4 x64 and everything seems to be working fine. My current GCC compilers are 4.1.2 and I would like to upgrade to 4.4 or 4.5. I would like to know whether I will need to recompile/reinstall mpich2 after upgrading the GCC compilers.
> 
> Thanks,
> 
> Raasik
> 
> 
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