Re: Running out of process VM
Re: Running out of process VM
- Subject: Re: Running out of process VM
- From: John Stiles <email@hidden>
- Date: Thu, 13 Apr 2006 15:34:56 -0700
Today's Intel machines do not support 64 bits.
Mac state-of-the-art is 64-bit on G5 only, and only in a command-line
process. Expect Apple to improve this situation in the future, as
Intel catches up to PowerPC and the OS matures.
You may find that you can allocate the amount of memory you want to
allocate, but not in one big slab. Heap fragmentation is almost
certainly playing a role here.
On Apr 13, 2006, at 3:31 PM, Tom Marchand wrote:
I didn't think the Intel machines supported 64 bits.
On Apr 13, 2006, at 6:23 PM, M. Carlson wrote:
I'm writing a Cocoa app (10.4.6, Xcode 2.2, PM 2xG5 2GHz, 8GB),
and I'm loading large tensor matrices, 1.1 GB each. The problem is
that I can only load one, the second one crashes the app with
malloc complaining "cannot allocate memory". I've verified in gdb
that the size I'm requesting is correct.
Base VM of the app is 380 MB. After loading one of the tensor
matrices, it goes up to 1.48 GB. But why should loading the next
1.1 GB tensor matrix cause the app to blow? Adding the next one
should only bring it up to 2.58 GB (Safari currently is sitting at
2.66 GB). Don't I have 4 GB (or thereabouts) of VM available to
the app? Do the new Intel machines have a 64-bit VM address space?
-Matt
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