Using Intel compiler for EM64T on x86_64

Hello,
    Does anyone in the list ever use Intel Compiler, which has support 
for EM64T, on Opteron or Athlon64 machine? Does the generated binary 
totally compatible with Opteron? Also, how is the optimization being 
done? Does the program run faster compared with GCC or PGI?
    Sorry if the question seems too stupid. We're having a cluster 
machine with some Scientific applications which require Fortran 90 
compiler, also it accepts only PGI Compiler or Intel Compiler so we 
can't use G95.

Regards

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Somsak Sriprayoonsakul

Scalable Computing Lab
High Performance Computing and Networking Center
Kasetsart University
[email protected]
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