23 Sep
2009
23 Sep
'09
6:10 a.m.
Hi Ben,
Interesting. I think I have my 9.1 tarballs around somewhere. Is this true for both linux and OS X?
Yes.
Also, what do you use as a baseline for benchmarking? One of the phenix.run_example options?
We don't have systematic benchmarks. (Every once in a while we optimize specific (new) algorithms and then move on.) ifort generates much faster executables than gfortran (factor 3-5), but in large part this is because the libc expf is almost amazingly 20 times slower than Intel's, as we found out recently. Intel C++ is hardly faster (except g++ suffers from the same expf problem, which we don't use much from C++). Ralf