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[Gcl-devel] Re: [Maxima] Re: Lisp vs. Java vs. C++ speed comparison time
[Gcl-devel] Re: [Maxima] Re: Lisp vs. Java vs. C++ speed comparison time? [LONG]
08 Jul 2004 12:04:31 -0400
Gnus/5.09 (Gnus v5.9.0) Emacs/21.2
"Vadim V. Zhytnikov" <address@hidden> 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.
> Vadim V. Zhytnikov
> Maxima mailing list
Camm Maguire address@hidden
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