[ADMB Users] 4 Gb limits

[Allan.Hicks at noaa.gov]

Hi John,

I have a couple of thoughts, probably of which you have already taken
care of. But, here goes:

1) Make sure that you are using ADMB 10.1. I noticed that the inputs
were still long int in version 10.0.

2) Make sure that AMB10.1 is compiled as 64-bit. I noticed that there
are no 64-bit downloads on the website for ADMB 10.1 in Linux.  I also
could not find 64-bit executables for Linux gcc on Buildbot (I see a
64-bit version for gcc 4.5 has been successfully built, but I do not see
executables). But, given that you are using gcc 4.6, you probably
compiled it yourself, but I just wanted to make sure.

3) You may want to try setting the cbs value in the tpl file, just to
make sure that there is no issue with the reading in from the command line.

If these aren't the answer, I'm not exactly sure where the problem is. 
Because it is at the exact breaking point of an unsigned long int
(2^32-1 is the maximum) then I imagine that there is something in the
code that is declared as an unsigned long int and there is a conversion
issue.  This is a bit over my head, and you warned me a while ago that
converting to 64-bit is not as straightforward as simply changing some
declarations.

In the meantime, I will try to compile ADMB 10.1 in Linux 64-bit and see
if I can reproduce your issue and investigate it further.

Sorry that I can't be of more help,
Allan





----- Original Message -----
From: John Sibert <sibert at hawaii.edu>
Date: Saturday, November 19, 2011 6:31 pm
Subject: Re: [ADMB Users] 4 Gb limits

> Nope. The value of the option behind -cbs is declared as a long 
> long 
> int. See nh99/xmodelm3.cpp.
> 
> Ian Taylor and Alan Hicks resolved this issue for -gbs.
> 
> John
> 
> 
> 
> On 11/19/2011 03:57 PM, Weihai Liu wrote:
> > I would guess the size for cbs was defined as an unsigned long, 
> which 
> > is 32 bit, its range 0 to 4294967295, so 4294967296 will be just 
> out 
> > of range, although it = 2^32.
> >
> >
> > weihai
> >
> > On Sat, Nov 19, 2011 at 8:23 PM, John Sibert <sibert at hawaii.edu 
> > <mailto:sibert at hawaii.edu>> wrote:
> >
> >     Using simple.tpl
> >
> >     simple -cbs 4294967295 works fine
> >     simple -cbs 4294967296 hangs
> >
> >     ubuntu 11.10, 64 bit, 32Gb RAM, gcc 4.6.1
> >
> >     Any thoughts?
> >     John
> >
> >     -- 
> >     John Sibert
> >     Emeritus Researcher, SOEST
> >     University of Hawaii at Manoa
> >
> >     Visit the ADMB project http://admb-project.org/
> >
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> >
> >
> 
> -- 
> John Sibert
> Emeritus Researcher, SOEST
> University of Hawaii at Manoa
> 
> Visit the ADMB project http://admb-project.org/
> 
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