[phenixbb] supported compilers for source builds
Ralf W. Grosse-Kunstleve
rwgk at cci.lbl.gov
Tue Sep 22 15:10:03 PDT 2009
> Interesting. I think I have my 9.1 tarballs around somewhere. Is this
> true for both linux and OS X?
> 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++).
More information about the phenixbb