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From: jm@sics.se (Johan Montelius)
Newsgroups: comp.lang.prolog
Subject: Re: Speed of Prologs
Message-ID: <1991Apr4.113822.26491@sics.se>
Date: 4 Apr 91 11:38:22 GMT
References: <1991Apr2.193926.22117@cl.cam.ac.uk>
Sender: news@sics.se
Organization: Swedish Institute of Computer Science, Kista
Lines: 17
In-Reply-To: ksh@ely.cl.cam.ac.uk's message of 2 Apr 91 19: 39:26 GMT


A word of warning if you want to compare speed of Prolog systems.

Prolog systems can have different opinion of 'runtime' . I think that
Quintus include GC time in runtime where'as SICStus does not. Also there
might be differencies in what time that is used, user-time (time
executing in user-mode only) or user-time + system-time (including
time executing in kernel mode). I know that SICStus and Sepia (as 
described in the manual) uses user-time only.




--
Johan Montelius 
SICS, PO Box 1263, S-164 28 Kista, Sweden.	
Phone: +46 8 752 15 68     Telefax: +46 8 751 72 30       Internet: jm@sics.se