[ADMB Users] 4 Gb limits

[John Sibert]

Hi Alan,
The problem seems to be in this initialization loop in df_file.cpp 
Adding the additional #ifdef seems to allow the program to execute.

Dave, is this initialization really necessary? It takes a long time for 
sz>4Gb (at least on the test machine).
> #ifdef __BORLANDC__
>       for (unsigned int i=0;i<sz;i++)
>   #else
>       for (long long int i=0;i<sz;i++)
>   #endif
>       {
>         buff[i]='\0';
>       }
Also I noticed (rather the compiler noticed) a discrepancy in the 
following two declarations:
> df_file.cpp:  extern char ad_random_part[6];
> gradstrc.cpp: extern char ad_random_part[7];
Which is correct?

I will commit the changes eventually.

Cheers,
John


On 11/20/2011 08:39 AM, Allan.Hicks at noaa.gov wrote:
> 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/
>>>
>>>      _______________________________________________
>>>      Users mailing list
>>>      Users at admb-project.org<mailto:Users at admb-project.org>
>>>      http://lists.admb-project.org/mailman/listinfo/users
>>>
>>>
>> -- 
>> John Sibert
>> Emeritus Researcher, SOEST
>> University of Hawaii at Manoa
>>
>> Visit the ADMB project http://admb-project.org/
>>
>> _______________________________________________
>> Users mailing list
>> Users at admb-project.org
>> http://lists.admb-project.org/mailman/listinfo/users
>>

-- 
John Sibert
Emeritus Researcher, SOEST
University of Hawaii at Manoa

Visit the ADMB project http://admb-project.org/