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Re: [Help-glpk] glpk - memory problem

From: Xiaolan Zhang
Subject: Re: [Help-glpk] glpk - memory problem
Date: Sat, 08 Apr 2006 18:41:35 -0500
User-agent: Thunderbird 1.5 (Windows/20051201)

Thank you for your help. However, I am quite a beginner in the area.
Could you help how to compile my program by gcc in 64bit mode? Because
my current problem is the parameter "ne" for lpx_load_matrix exceeds the
size of 32 bit "int". I have to use "long int" to represent "ne". Then,
lpx_load_matrix will have a warning of none comparative parameter. Thank


Andrew Makhorin wrote:
>> I have the same memory problem as well. I don't know how to run a big
>> problem set which is larger than "int".  I just wonder if glpk has
>> package for large problem size. I looked at Andrea's post. However, I
>> cannot find lpx_free_env in my installed packet on Solaris. Would you
>> please tell me more about that?
> It is called lib_free_env and placed in file 'glplib2.c'.
> If you wish to compile glpk on a 64-bit platform, you need to
> define the preprocessor variable _GLPLIB_HUGEMEM; otherwise the
> memory available to glpk routines is limited by sizeof(int) bytes,
> that is 2Gb.

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