[Symphony] Symphony

[leandro.mengue at stihl.com.br]

Hello Ted,

I think that the error (...'std::bad_alloc'... ) is not a "out of memory problem", because the process in task manager appear with  1.058.704 Kb ( < 2Gb ).

I reduce the problem (number of variables ) and get the same error, but I see that the process appears with a maximum of 900.000 Kb  ( < Gb 1 < 2Gb ).

If I reduce the problem (number of variables ) in 50%, it works fine (using 457.000 Kb in task manager).

System1: Intel Core 2 Duo with Windows XP 32-bit, 2 Gb memory

System2: Intel Xeon with Windows 2003 Server 32-bit, 12 Gb memory

Best regards,

Leandro
 

-----Original Message-----
From: Ted Ralphs [mailto:tkralphs at Lehigh.EDU] 
Sent: Thursday, October 08, 2009 9:14 PM
To: BR/ATI-me Mengue da Silva, Leandro
Cc: Menal Guzelsoy; Ashutosh Mahajan; symphony
Subject: Re: Symphony

There's no limit within SYMPHONY itself. Windows, however, limits
processes to at most 2G of memory:

http://msdn.microsoft.com/en-us/library/aa366778%28VS.85%29.aspx

I assume you must be running the 64-bit Windows? What version? In any
case, having 12G does not actually buy you an increase in the memory
accessible by a single process.

Cheers,

Ted

On Thu, Oct 8, 2009 at 5:13 PM,  <leandro.mengue at stihl.com.br> wrote:
> Hello Ted,
>
> Congratulation for your software! It´s very good!
>
> The installer for Windows works very well.
>
> I have a question for you:
>
> Symphony have any memory utilization limit? Because I run my LP problem and
> receive a "memory allocation problem" like this:
>
> Starting Preprocessing...
> Preprocessing finished...
>          coefficients modified: 753290
>          bounds improved: 363
>          constraints removed: 10330
>          variables fixed: 2638
> Problem has
>          763758 constraints
>          781637 variables
>          1548679 nonzero coefficients
>
> Solving...
> terminate called after throwing an instance of 'std::bad_alloc'
>   what():  std::bad_alloc
>
> This application has requested the Runtime to terminate it in an unusual
> way.
> Please contact the application's support team for more information.
>
>
> I can see in the task manager that the memory utilization stops at 1.058.704
> Kb...
>
> I am running it in a machine with 12Gb of memory.
>
> Best regards,
>
> Leandro Mengue
> Porto Alegre - RS - Brazil
>
>
>
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-- 
Dr. Ted Ralphs
Associate Professor, Lehigh University
(610) 628-1280
ted 'at' lehigh 'dot' edu
coral.ie.lehigh.edu/~ted
____________________________________________________________________________

Esta mensagem, e qualquer de seus anexos, eh confidencial e privilegiada.
Caso voce nao seja o destinatario, nao esta autorizado a reproduzir ou
divulgar a terceiros o conteudo desta mensagem e de qualquer anexo da mesma
e deve apagar com os seus respectivos anexos. 

If you are not the legitimate recipient, please send the e-mail back and delete it
on your system. Any unauthorized use or transfer of confidential information
may have legal consequences.