[Linux-ia64] Itanium gets supercomputing software

Mikhail Kuzminsky kus at free.net
Mon Jul 23 12:44:16 EDT 2012


According to Greg Lindahl
> 
> Open64 has a GPLed IA64 backend. While it's unfortunate that SGI has
> stopped GPLing new work on it, it's still a pretty good compiler.
  It's bad for beowulf community not only because SGI has great
compiler team. IMHO, in the case of IA-64, program optimisation
for next generation chips
is very sensitive to microarchitecture details because of needs 
to prepare simultaneously executed contens in bundles. But like
restrictions (allowing to do parallel execution in bundles) are
changed really (for example from Itanium to Itanium 2) and
it's necessary to re-construct the optimizations block of compiler.
This means that old compilers will lost their efficiency :-(

Mikhail Kuzminsky
Zelinsky Institute of Organic Chemistry
Moscow
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