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Re: [Axiom-developer] Re: Axiom and Sage

From: Waldek Hebisch
Subject: Re: [Axiom-developer] Re: Axiom and Sage
Date: Mon, 10 Dec 2007 04:53:12 +0100 (CET)

Tim Daly wote:
> >The main plus of this packaging for sage is that it builds from
> >source quickly (in a few minutes) using precompiled clisp files.
> Well, on my 2Ghz machine with 2 Gig of memory running VMWare and
> using the sage vmware image (but upgrading the VM to have 1G memory)
> I started the package-install at 3:30am this morning. It is now
> 2:10pm and the build is still "in-process". They are heavy things,
> your minutes :-)

Tim, do you have a large lisp subdirectory tree in your home
directory?  By default clisp tries to load lisp files from
this directory -- it this directory is large search can take
a lot of time.  On Linux I had gcl sources in ~/lisp directory
-- clisp needed about 0.5 second on startup to scan the whole
tree.  Given that FriCAS build starts clisp about 1200 times
that add to few minutes.  If you have larger ~/lisp tree or
if VMWare filesystem is slower you will observe much larger
startup times.

This clisp behaviour can be disabled (and newer versions of
FriCAS do this), but IIRC the current Sage package uses
old FriCAS version which has this problem.

                              Waldek Hebisch

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