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[Gcl-devel] Re: 32bit GCL


From: Matt Kaufmann
Subject: [Gcl-devel] Re: 32bit GCL
Date: Mon, 9 Aug 2010 02:34:29 -0500

Hi, Camm  --

Thanks for the fix!  At one time, that same form (setq
si::*multiply-stacks* 2), also failed on Windows.  Does it work on
Windows now?

I haven't forgotten to get you a fix for the issue of moving .cert
files in ACL2.  I have a fix, but I'm considering just doing a new
ACL2 release.  Let me know if you have any particular timetable for
getting the fix.

Thanks --
-- Matt
   Cc: address@hidden, address@hidden, address@hidden
   From: Camm Maguire <address@hidden>
   Date: Sun, 08 Aug 2010 22:53:49 -0400
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   Greetings!

   Matt Kaufmann <address@hidden> writes:

   > Hi, Camm --
   >
   > I've just grabbed the latest cvs version of GCL 2.6.8pre and built
   > ACL2 with it, on my Intel Mac running Mac OS 10.6.4.  The build
   > succeeded, as did a run of the ACL2 regression suite (using a
   > development copy of ACL2, not much different from ACL2 4.0) -- well,
   > almost.  (But almost is still great -- thanks!)  Here's the story.
   >
   > I first removed the progn form near the end of source file init.lisp
   > that contains the form
   >
   > (setq si::*multiply-stacks* 2)
   >
   > because that form caused an error (though maybe the build would have
   > succeeded; I'm not sure).  Here's a simple log from my Mac, not
   > involving ACL2:
   >

   Thanks for spotting this -- looks like its very old.  In any case,
   should be fixed now.  Please let me know if problems persist.

   Take care,

   >   ~$ /Users/kaufmann/lisps/gcl/gcl-2.6.8pre/unixport/saved_gcl
   >   GCL (GNU Common Lisp)  2.6.8 CLtL1    Aug  6 2010 11:51:51
   >   Source License: LGPL(gcl,gmp), GPL(unexec,bfd,xgcl)
   >   Binary License:  GPL due to GPL'ed components: (READLINE UNEXEC)
   >   Modifications of this banner must retain notice of a compatible license
   >   Dedicated to the memory of W. Schelter
   >
   >   Use (help) to get some basic information on how to use GCL.
   >   Temporary directory for compiler files set to 
/var/folders/6S/6ScqCriVFE8aH0vpDjfNK++++TI/-Tmp-/
   >
   >   >(setq si::*multiply-stacks* 2)
   >
   >   2
   >
   >   >
   >   Error: Caught fatal error [memory may be damaged]
   >   Fast links are on: do (si::use-fast-links nil) for debugging
   >   Error signalled by an anonymous function.
   >
   >   Error: 4 is an illegal ihs index.
   >   Fast links are on: do (si::use-fast-links nil) for debugging
   >   Error signalled by SYSTEM:UNIVERSAL-ERROR-HANDLER.
   >   Broken at SYSTEM:SCH-FRS-BASE.
   >   >>>:b
   >   Backtrace: system:universal-error-handler > SYSTEM:SCH-FRS-BASE
   >   NIL
   >   >>>
   >
   > Perhaps there's a different way I should increase stack size?  One
   > regression test failed, namely books/serialize/serialize-tests.lisp,
   > with "Invocation history stack overflow.".  I'm guessing it's because
   > I didn't double the stack size, though I'm not sure.
   >
   > Thanks --
   > -- Matt
   >    Cc: address@hidden, address@hidden, Robert Krug <address@hidden>
   >    From: Camm Maguire <address@hidden>
   >    Date: Fri, 06 Aug 2010 15:12:15 -0400
   >    X-SpamAssassin-Status: No, hits=-2.6 required=5.0
   >    X-UTCS-Spam-Status: No, hits=-252 required=165
   >
   >    Greetings!  Wonderful to hear from you too!
   >
   >    "Warren A. Hunt Jr." <address@hidden> writes:
   >
   >    > Hi Camm,
   >    >
   >    > It's good to hear that you are back at work on GCL.
   >    >
   >    >   It appears we're getting close to a gcl release.  You might recall 
out
   >    >   [typo?; probably should be be "our"]
   >    >   having used static builds in the past to enable 32bit linux machines
   >    >   to use up to 3gig memory as opposed to the usual 1gig limit (imposed
   >    >   by the load address of shared libraries.)  Warren told me at one 
time
   >    >   that this was useful in getting the most out of 32bit, especially as
   >    >   64bit comes with its own overhead of bigger pointers.  In addition,
   >    >   the binary of course is completely portable.  Is this important to
   >    >   support?  There appear to have been some libc developments which 
will
   >    >   have to be worked around to get it working now.
   >    >
   >    > I believe there will be interest in 32-bit computing
   >    > for many years to come; I believe the embedded world of
   >    > computing will become almost entirely based on 32-bit
   >    > ARM and X86 platforms.  The number of embedded systems
   >    > (phones, tablets, set-top boxes, utility meters, etc.)
   >    > far exceeds the number of general-purpose computing
   >    > systems.  For instance, the device that measures the
   >    > electric power used in my home is an embedded Linux
   >    > system running on a Pico ITX board with a X86
   >    > processor.  So, for embedded computing, I think getting
   >    > what one can from the 32-bit X86 architecture is
   >    > valuable.
   >    >
   >    > Some years ago, Boyer and I didn't have ready access to
   >    > 64-bit computers so we were motivated to get as much
   >    > out of our 32-bit computers as possible.  However, now
   >    > even my laptop contains a 64-bit (Intel Core 2 Duo)
   >    > microprocessor with 8 GBytes RAM, so now I always work
   >    > on a 64-bit machine.  Therefore, I don't expect to be a
   >    > future customer of 32-bit GCL for general-purpose
   >    > computing.
   >    >
   >
   >    Good thing then I guess that I put in the extra work to get 64bit
   >    working on the mac.  There is a special configure option needed as
   >    explained in README.macosx.  The standard configure tools detect the
   >    box as 32bit by default.
   >
   >    In any case, this mac stuff appears done now.  If anyone finds it
   >    useful enough to try it out and report back, that of course would be
   >    great.  No need of course unless it is of genuine use to some real mac
   >    user. 
   >
   >    Take care,
   >
   >    > Cheers,
   >    >
   >    > Warren
   >    >
   >    >
   >    >
   >    >
   >
   >    -- 
   >    Camm Maguire                                        address@hidden
   >    
==========================================================================
   >    "The earth is but one country, and mankind its citizens."  --  
Baha'u'llah
   >
   >
   >
   >

   -- 
   Camm Maguire                                     address@hidden
   ==========================================================================
   "The earth is but one country, and mankind its citizens."  --  Baha'u'llah



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