or certification of such products or brands
by the National Institute of Standards and Technology or Sandia National 
Laboratories.  All trademarks
mentioned herein belong to their respective owners.</H4>

<UL><A HREF="#fortran ug sys mpich">MPICH</A>
<BR><A HREF="#fortran ug sys pacific">Pacific Sierra</A>
<BR><A HREF="#fortran ug sys NAS">NASoftware</A></UL>

<H3>
<A NAME="fortran ug sys mpich"></A>MPICH</H3>
As of version 1.1.2, the MPICH implementation of MPI is not completely
"Fortran 90 friendly." Onl