[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Speed reduction of 2.1.48 wrt 2.1.36 for structures
From: |
David Bateman |
Subject: |
Re: Speed reduction of 2.1.48 wrt 2.1.36 for structures |
Date: |
Fri, 30 May 2003 14:17:35 +0200 |
User-agent: |
Mutt/1.3.28i |
According to John W. Eaton <address@hidden> (on 05/28/03):
>
> At some point (I don't know the precise version numbers or dates, but
> you could figure this out from the ChangeLogs, I suppose), structures
> were modified to be structure arrays instead. So now there is some
> extra overhead for scalar structures. Perhaps that accounts for the
> difference.
>
> jwe
Dear John,
You're certainly right. The problem is this affects cases that can't be
vectorized (like the trellis in a viterbi) quite badly. Now that I know
about it, this just makes the need to convert such code into an oct-file
more pressing...
Cheers
David
--
David Bateman address@hidden
Motorola CRM +33 1 69 35 25 00 (Ph)
Espace Technologique, Commune de St Aubin +33 1 69 35 25 01 (Fax)
91193 Gif-Sur-Yvette FRANCE
The information contained in this communication has been classified as:
[x] General Business Information
[ ] Motorola Internal Use Only
[ ] Motorola Confidential Proprietary