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Date:      Mon, 03 Feb 2003 14:20:44 +0100
From:      Dag-Erling Smorgrav <des@ofug.org>
To:        Bakul Shah <bakul@bitblocks.com>
Cc:        Mark Murray <mark@grondar.org>, "Jeroen C. van Gelderen" <jeroen@vangelderen.org>, phk@FreeBSD.ORG, current@FreeBSD.ORG
Subject:   Re: rand() is broken
Message-ID:  <xzpptq9a4b7.fsf@flood.ping.uio.no>
In-Reply-To: <200302021848.NAA19508@agamemnon.cnchost.com> (Bakul Shah's message of "Sun, 02 Feb 2003 10:48:00 -0800")
References:  <200302021848.NAA19508@agamemnon.cnchost.com>

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Bakul Shah <bakul@bitblocks.com> writes:
> Guys, please realize that random() is also used in generating
> simulation inputs (or timing or whatever).  If you go change
> the underlying algorithm or its parameters one can't generate
> the same sequence from the same seed when repeating a test.
> Some chip bug symptoms show up after hours/days of simulation
> time and only with specific inputs so repeatablity is a
> requirement.

Go to <URL:http://stat.fsu.edu/pub/diehard/cdrom/>; for free download
of up to 480,000,000 random bits, which ought to be enough for most
simulations.

DES
-- 
Dag-Erling Smorgrav - des@ofug.org

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