Date: Sun, 05 Jan 2003 12:05:33 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Rahul Siddharthan <rsidd@online.fr> Cc: Brett Glass <brett@lariat.org>, Greg 'groggy' Lehey <grog@FreeBSD.org>, chat@FreeBSD.org Subject: Re: Bystander shot by a spam filter Message-ID: <3E18900D.10F82814@mindspring.com> References: <3E18073C.68182FE4@mindspring.com> <4.3.2.7.2.20030104201251.029387d0@localhost> <4.3.2.7.2.20030104112015.026a5530@localhost> <4.3.2.7.2.20030104201251.029387d0@localhost> <4.3.2.7.2.20030104202908.03c3b100@localhost> <20030105073804.GA72674@wantadilla.lemis.com> <20030105074923.GA4956@papagena.rockefeller.edu> <3E18073C.68182FE4@mindspring.com> <4.3.2.7.2.20030105120224.029377d0@localhost> <20030105192556.GA526@papagena.rockefeller.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
Rahul Siddharthan wrote: > It is interesting, in fact, that gcc does well in all such problems. > It doesn't do very well in Gauss-Siedel relaxation (which is a fairly > straightforward iterative method) and does quite badly in a > monte-carlo integration (which is basically just one long loop with > calls to a random number generator and the function evaluator). Monte Carlo is where I've personally noticed a difference, FWIW. There are a number of packages commonly used in physics work, out of both Berkeley and LBL, which perform Monte Carlo generation of relativistically invariant P-N and N-N collisions, for the purposes of pair production. You then use your theoretical physics to constrain the resulting allowable values, which then simulates what you can expect, according to your theory, were you to run a physical experiment in a large accelerator/collider. It's a useful way of testing theories vs. observed data, to see where they fall down (or not -- one hopes...). In any case, the Intel compiler gives significantly better numbers. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3E18900D.10F82814>