Re: [Help-glpk] [Fwd: No Memory Available Error]

[glpk xypron]

Hello Aly,

a 32bit application can not address more than 2**32 bytes (4GB).

You can use the task manager to analyze which application is using how much 
memory.

Please, read
https://en.wikibooks.org/wiki/GLPK/ODBC#Machine_architecture

I suggest you put your data into a SQL data base like MySQL and use the 64bit 
version of GLPK.

Best regards

Xypron

> -------- Forwarded Message --------
> Subject: No Memory Available Error
> Date: Wed, 15 Aug 2012 09:58:24 -0400 (EDT)
> 
> Hi guys,
> 
> I have two questions:
> 
> 
> I am trying to solve a model that I generate its data from Excel
> (connecting to it through ODBC). After the model is generated, glpk 
> terminates with
> a memory error. The message is:
> 
> glp_malloc: no memory available
> Error detercted in file ..\src\glpenv05.c at line 70.
> 
> Then, it terminates with a Microsoft Visual C++ Runtime Library runtime
> error.
> 
> I am using glpk 32 bit on a 64 bit windows 7 machine, and I use a 32 bit
> Excel. Any ideas how to get rid of this error? Seems like GLPK is not using
> all the available memory, since I also did solve the same model on a
> machine with 50 GB of Ram, and I still got the same error. Would using a 64 
> bit
> GLPK solve this? And in such case, would it work with the 32 bit Excel? or
> how could I force glpk in general to use all the available memory and solve
> this error?
> 
> 
> 2. Is there any way I can call CPLEX or Gurobi as the solver for the
> models I generate on GLPK?
> 
> Your help will be highly appreciated. Thanks a lot.
> Aly