[gmx-users] Intel compilers
lindahl at stanford.edu
Mon Mar 25 19:00:38 CET 2002
Alan Wilter Sousa da Silva wrote:
> Does Intel compiler work well with AMD processors? And how to get
>a free license?
Just go to http://www.intel.com/software/products
Note that there is no separate C compiler - it's included in the C++ one.
Rumor actually says AMD Athlon benefits even more than Pentium III's
from these compilers, but I haven't tried it myself.
I don't expect Gromacs to benefit from this compiler on an Athlon either
since we already use SSE and/or 3DNow loops.
For good general performance it's important to use the flags that
produce code with Katmai instructions (Pentium III or later, this will
work with Athlon XP/MP too, but not older Athlons.).
If you want good double precision performance you need a pentium4 and
should use the Willamette instructions. I don't remember the flags by
heart, but don't worry - there are good manuals included in the packages.
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