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[MIT-Scheme-devel] Building with 32 bit pointers?

From: Tim Josling
Subject: [MIT-Scheme-devel] Building with 32 bit pointers?
Date: Sat, 11 Oct 2003 19:52:57 +1000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020830


1. I have Gnu/linux (Red hat 8) and have been using mit-gnu-scheme for a while. I am running into this 16mb heap issue, running out of memory on big genetic algorithm runs...

I have the impression this is due to the use of 8 bits from the pointer as a type. Can I rebuild with 32 bit pointers so I get a large heap? Maybe there is a configuration option or do I need to patch something?

I am on 7.5.17 of scheme but I have downloaded the patest stable release 7.7.1 and can install that if it helps.

I read all the doc and browsed the source for 1/2 hour or so without running into anything obvious. Any help appreciated,

2. In windows one can call arbitrary functions, but not in Unix/Linux. Is there any particular problem with adding this capability to Unix? Has any design or discussion occured about this? Would a patch to add it be in principle acceptable? Do you need a copyright assignment to the FSF?

Tim Josling

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