RE: MPICH-GM 1.2.5..9.

Yes, cc=gcc and fc=ifc does work. When building Mpich with gcc, you almost 
never need the Gnu fortran interfaces, as almost nobody builds mpich 
fortran applications with g77. In cases where, at least 
previously, icc-built mpich-gm didn't work properly, this has been a good 
solution for getting an mpich-gm that could use intel fortran compilers. 
The latest mpich-gm release seems to be fine with icc, however, so this 
may be a moot point.

I don't remember precisely, but I think g77 and ifc use the same 
conventions, and pgf77/90 are different. 

On Tue, 25 Feb 2003 [email protected] wrote:

> I believe the issue deals partially with the interoperability of the FORTRAN
> function call interface. (meaning: case, underscores, and implicit string
> length argument placement) 
> Do ifc/efc and g77 use the same conventions?  
> I don't know if cc=gcc and fc=ifc works when compiling mpich. (I would have
> to test)
> 
> Mike
> 
> -----Original Message-----
> From: Greg Lindahl [mailto:[email protected]] 
> Sent: Tuesday, February 25, 2003 3:07 PM
> To: [email protected]
> Subject: Re: [Myrinet] MPICH-GM 1.2.5..9.
> 
> On Tue, Feb 25, 2003 at 01:20:23PM -0700, Christopher D. Maestas wrote:
> 
> > I still maintain that on an end to end approach, the intel compiler suite
> would
> > give better performance than the gcc suite, especially when trying to take
> > advantage of Itanium2 and XEON intructions sets.  So with that in mind,
> there is
> > still an advantage in compiling mpich-gm with the intel compilers over
> gcc.
> 
> I thought you said you'd actually done it and measured the difference.
> 
> If there's no proven performance advantage to compiling the Myrinet
> stuff with the Intel compiler, then why should Myricom work around
> bugs in the Intel compiler?
> 
> greg
> 
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-- 

Chris Jordan
------------
HPC Engineer
Center for High Performance Computing
University of New Mexico  
[email protected]
505.277.8259

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