From octave-maintainers-request at bevo dot che dot wisc dot edu Fri Jan 23 16:34:12 2004
Subject: Re: randn benchmarks
From: "Dmitri A. Sergatskov" <dmitri at unm dot edu>
To: Dirk Eddelbuettel <edd at debian dot org>,    Paul Kienzle <pkienzle@users.sourceforge.net>
Cc: David Bateman <David dot Bateman at motorola dot com>,    octave-maintainers@bevo.che.wisc.edu
Date: Fri, 23 Jan 2004 15:33:29 -0700

Dirk and Paul,

While we at it. Could someone explain it to me why Dirk's randmt is few times
faster than the randn from octave-forge?


octave:2> tic ; randmt(1000); toc
ans = 0.055763
octave:3> tic ; randmt(3000); toc
ans = 0.77237
octave:4> tic ; randmt(10000); toc
ans = 26.469
octave:5> tic ; randn(1000); toc
ans = 0.31140
octave:6> tic ; randn(3000); toc
ans = 2.7659
octave:7> tic ; randn(10000); toc
ans = 30.786
((( It does seem that times converge for very large arrays...)))
octave:8> which randn
randn is the dynamically-linked function from the file
/usr/local/libexec/octave/2.1.50/site/oct/i686-pc-linux-gnu/octave-forge/randn.oct


Sincerely,

Dmitri.