From: "John Hawkes" <hawkes@sgi.com>
To: <linux-kernel@vger.kernel.org>
Cc: <wookie@osdlab.org>
Subject: Re: [BENCHMARK] AIM Independent Resource Benchmark results for kernel-2.5.44
Date: Tue, 29 Oct 2002 12:06:16 -0800 [thread overview]
Message-ID: <015e01c27f86$a42d4290$9865fea9@PCJohn> (raw)
In-Reply-To: fa.f6uq3iv.232305@ifi.uio.no
From: "Jakob Oestergaard" <jakob@unthought.net>
...[snip]...
> The correct way to terminate that loop is, like was already suggested,
> doing a comparison to see if the residual is "numerically zero" or
> "sufficiently zero-ish for the given purpose". Eg. "delta < 1E-12" or
> eventually "fabs(delta) < 1E-12".
Tim Witham at the OSDL told me that he ran some experiments with
different convergent deltas:
zero Rate (ops/sec) Iteration Rate
10-6 331,300 1656.5
10-8 315,049 1575.0
10-10 302,000 1510.0
10-12 292,300 1461.5
10-14 285,400 1427.0
Anything smaller than 10-14 didn't converge.
--
John Hawkes
next parent reply other threads:[~2002-10-29 20:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.e2emdkv.j1ksaf@ifi.uio.no>
[not found] ` <fa.f6uq3iv.232305@ifi.uio.no>
2002-10-29 20:06 ` John Hawkes [this message]
2002-10-29 20:46 ` [BENCHMARK] AIM Independent Resource Benchmark results for kernel-2.5.44 Timothy D. Witham
[not found] <fa.d95885v.1d14t8c@ifi.uio.no>
2002-10-26 0:12 ` John Hawkes
2002-10-28 18:28 ` Nathan Straz
2002-10-28 23:17 ` Jakob Oestergaard
2002-10-29 15:28 ` Nathan Straz
2002-10-29 16:24 ` Cliff White
2002-10-23 7:15 Siva Koti Reddy
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