Polyhedron benchmark on Opteron

[Tim Prince]

Tim Prince wrote:
> François-Xavier Coudert wrote:
> 
>> Unfortunately, there are also tests for which Intel is a clear winner:
>>  -- aermod, by 44%
>>  -- air, by 30%

air speeds up by 8% with gfortran, and 25% (on Intel Core 2 Duo) with 
ifort, if some obvious inner/outer loop swaps are written in.  I'm 
somewhat surprised that none of the referenced compilers appear capable 
of doing this automatically.