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NNTP-Posting-Date: Fri, 25 Mar 2005 18:28:23 -0600
From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Gnat 3.15p & Windows & Hyperthreading Q
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Date: Fri, 25 Mar 2005 18:28:23 -0600
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Date: 2005-03-25T18:28:23-06:00
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  I'm told that a multitask program compiled with Gnat 3.15p and run
under Windows XP Pro on a hyperthreaded machine, runs in the same total
time as the same program using a single task.  OTOH, when compiled with
GNAT 5.02a1 and run on a dual-processor 400 MHz Celeron running Mandrake
Linux 8.2, it runs about 50% faster with two rather than one tasks.
  Is the problem "hyperthreading", Windows, or Gnat 3.15p?