----- "John Hearns" <[email protected]> wrote: > A commercial compiler - Intel / Pathscale /Portland > will always give you better performance from an application.
The feedback from a number of our users on our Barcelona/ Shanghai cluster is that GCC beats the Intel compilers hands down [1] and that the PGI ones don't tend to hold a significant margin over GCC either. Interestingly using the -march=amdfam10 option in GCC 4.3.3 to emit Barcelona specific optimisations produces real application code that runs slower than the standard optimisation options (confirmed by a couple of users). I've built GCC 4.4.0, but we've not tested with it (or announced it to users) yet. [1] - Not surprising, it's hardly their home turf. ;-) cheers, Chris -- Christopher Samuel - (03) 9925 4751 - Systems Manager The Victorian Partnership for Advanced Computing P.O. Box 201, Carlton South, VIC 3053, Australia VPAC is a not-for-profit Registered Research Agency _______________________________________________ Beowulf mailing list, [email protected] sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
