Re: Lisp vs. Java vs. C++ speed comparison time? [LONG]
Subject: Re: Lisp vs. Java vs. C++ speed comparison time? [LONG]
From: Camm Maguire
Date: 08 Jul 2004 12:04:31 -0400
Greetings!
"Vadim V. Zhytnikov" <vvzhy@mail.ru> writes:
> Valery Pipin writes:
>
> > On Saturday 03 July 2004 01:42, Camm Maguire wrote:
> > <snipped>
> >
> >>All lisps here are the latest versions in Debian unstable. GCL was
> >>run in ANSI mode. The machine was a dual Xeon 2.4Ghz. We already
> >>know that the relative GCL/CMUCL performance can vary somewhat by
> >>machine, presumably influenced by cache size and cpu/memory bandwidth
> >>ratios. It is clear for example that CMUCL is doing a better job on
> >>the memory layout/access times which predominate in the gc time
> >> component.
> > Is that the reason why I do not observe the memory leakage with maxima computations that done with cmucl
> > implementation. In opposite, the gcl implementation can consume so much memory that I force to restart the x-session
> > or even to reboot PC.
> >
>
> I don't think this is memory leak. Gcl memory layout is less
> compact compared to one of cmucl. The same computation on GCL
> require more RAM and it starts swapping earlier.
>
This is an interesting observation. If you can quantify this with
some reproducible examples, we might be able to take a look at it.
Take care,
> --
> Vadim V. Zhytnikov
>
> <vvzhy@netorn.ru>
>
> _______________________________________________
> Maxima mailing list
> Maxima@www.math.utexas.edu
> http://www.math.utexas.edu/mailman/listinfo/maxima
>
>
>
--
Camm Maguire camm@enhanced.com
==========================================================================
"The earth is but one country, and mankind its citizens." -- Baha'u'llah