From btyner at gmail.com  Tue Mar  5 02:45:20 2013
From: btyner at gmail.com (Benjamin Tyner)
Date: Mon, 04 Mar 2013 20:45:20 -0500
Subject: [Rd] crossprod(): g77 versus gfortran
Message-ID: <51354E30.7090802@gmail.com>

Hi

I've got two builds of R, one using g77 (version 3.4.6) and the other
using gfortran (version 4.1.2). The two builds are otherwise identical
as far as I can tell. The one which used g77 performs crossprod()s
roughly twice as fast as the gfortran one. I'm wondering if this rings a
bell with anyone, and if so, are you aware of any configure settings
which will improve the performance when using gfortran. This is on RHEL 5.

Regards
Ben



[Rd] crossprod(): g77 versus gfortran
Benjamin Tyner