Ubuntu 12.10: 32-bit vs. 64-bit Linux Performance
Written by Michael Larabel in Operating Systems on 14 October 2012 at 05:27 AM EDT. Page 3 of 8. 46 Comments.
For the Fortran-based NAS Parallel Benchmarks, the gains out of the 64-bit builds weren't too dramatic.
Dolfyn though is one of the computational workloads that highly benefits from 64-bit support.