From: Jonathan Morton <chromi@cyberspace.org>
To: "Gabriel.Leen" <Gabriel.Leen@ul.ie>, linux-mm@kvack.org
Subject: RE: Process not given >890MB on a 4MB machine ?????????
Date: Mon, 24 Sep 2001 23:16:15 +0100 [thread overview]
Message-ID: <a05100302b7d55fc15ab3@[192.168.239.101]> (raw)
In-Reply-To: <5D2F375D116BD111844C00609763076E050D167E@exch-staff1.ul.ie>
> Unfortunately my program which is doing "alot" of calculations still
>needs more space,
>
> Is there some way to enable 64 bit support (or something) and get
>the swap space active,
> and give it another GB or so ?
Nope, I doubt it. The x86 architecture is fundamentally 32-bit, and
thus can't address more than 4Gb for a single process - 1Gb of that
address space is reserved for the kernel. You can confirm this by
looking at the result of sizeof(void*).
You will either need to use a true 64-bit machine (POWER, Alpha,
UltraSPARC or MIPS) or rewrite your program to use large files
instead of large amounts of memory. I suspect the latter would be
less costly.
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from: Jonathan "Chromatix" Morton
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next prev parent reply other threads:[~2001-09-24 22:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-24 21:15 Gabriel.Leen
2001-09-24 22:16 ` Jonathan Morton [this message]
[not found] <5D2F375D116BD111844C00609763076E050D1681@exch-staff1.ul.ie>
2001-09-24 22:49 ` Rik van Riel
-- strict thread matches above, loose matches on Subject: below --
2001-09-24 22:41 Gabriel.Leen
2001-09-24 21:16 ` Joseph A Knapka
2001-09-25 10:59 ` Stephen C. Tweedie
2001-09-25 17:36 ` afei
2001-09-26 7:04 ` Eric W. Biederman
2001-09-26 8:53 ` Stephen C. Tweedie
2001-09-21 16:07 Gabriel.Leen
2001-09-22 2:01 ` Rik van Riel
2001-09-20 19:25 Gabriel.Leen
2001-09-20 19:56 ` brian
2001-09-20 20:36 ` Thierry Vignaud
2001-09-20 20:56 ` Benjamin LaHaise
2001-09-21 8:29 ` Eric W. Biederman
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