[MITgcm-support] building with MPI on a dual-core mac

[Klymak Jody]

On 20-Jul-09, at 7:33 AM, Constantinos Evangelinos wrote:

> There is an issue with the timing calls when using the double
> underscore f2c name mangling/argument passing convention but it  
> should not be
> there with gfortran.

Right you are.  -tc worked fine.  Must have been a holdover from my  
f77 compiles...

While I suppose I can guess, what is the technical difference between  
"user", "system" and "wallclock"?  I suppose a large difference  
between "wallclock" and "system" means lots of MPI overhead?

Thanks,  Jody