From: Ian Lance Taylor <iant@google.com>
To: sonatabar bar <sonatabar@yahoo.com>
Cc: gcc-help@gcc.gnu.org
Subject: Re: Maximum Allocatable Dynamic Memory
Date: Thu, 22 Jun 2006 18:35:00 -0000 [thread overview]
Message-ID: <m364itninu.fsf@localhost.localdomain> (raw)
In-Reply-To: <20060622142626.85577.qmail@web36203.mail.mud.yahoo.com>
sonatabar bar <sonatabar@yahoo.com> writes:
> I am trying to test what is the maximum allocatable
> dynamic memory on a give machine. For my surprise I
> see wonders happening, and I don't have an
> explaination to it. I understand a bit that, it
> doesn't have to do with compilers entirely, and hece
> seeking explaination.
>
> this test fails allocating memory for index 68561
> which means => allocated memory is (68561000000*8)
> bytes =>X
> => X/1024/1024/1024 = 510.82 Gig ???
>
> May be I am missing something, tried running it on a 2
> & 4 Gig phyiscal memory machines, with a swap space of
> 8Gig.
Wrong mailing list. This is not a gcc question. It is a kernel or a
library question.
I believe the answer is that the kernel permits you to allocate as
many pages as you like, but when you actually try to use them and it
looks for a place to put them, it will fail. I am not an expert,
though.
Ian
prev parent reply other threads:[~2006-06-22 18:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-22 14:26 sonatabar bar
2006-06-22 18:35 ` Ian Lance Taylor [this message]
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