Re: [Help-glpk] 64-bit with Mac G5
> how can I change the glpk source code to generate the stand alone glpsol > for my Mac G5 with 64-bit? > According the Changelog, I need only to define the GLPHUGEMEM preprocessor > variable in glplib2.c, but I did not found this variable in this file. > Anyone can help me? You need to define _GLPLIB_HUGEMEM used in glplib2.c. This only will prevent umalloc/ucalloc/ufree from checking the available memory that, by default, is limited by INT_MAX bytes (about 2GB on 32-bit machines). Note that *all* integer quantities in Glpk routines are declared as `int' under the only assumption that sizeof(int) >= 4; so, if you are able to compile Glpk in such a way that sizeof(int) is 8 (rather than 4 on 32-bit platforms), no changes/definitions are needed at all. (May be replacing `int' by `long int' during compilation is a most natural way to port Glpk on a 64-bit machine, however, I've never tried that.) Andrew Makhorin ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
RE: [Help-glpk] 64-bit with Mac G5
Dear Andrew, "(May be replacing `int' by `long int' during compilation is a most natural way to port Glpk on a 64-bit machine, however, I've never tried that.)" Can I do this only with compiler flags? Thank you very much. Marcos Roberto Silva PS.: I am using gcc-3.3 for MAC. ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
Re: [Help-glpk] 64-bit with Mac G5
Hi Marcos, > "(May be replacing `int' by `long int' during compilation is a most > natural way to port Glpk on a 64-bit machine, however, I've never > tried that.)" > > Can I do this only with compiler flags? I don't know because I don't have a 64-bit machine. Looks like gcc translates `int' as well as `long int' to 32-bit integers, and only `long long int' to 64-bit integers; however, it seems to me there is no compiler flag to change `int' to `long long int'. Regards, Andrew Makhorin ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
RE: [Help-glpk] 64-bit with Mac G5
Dear Andrew, unfortunately the definition of the variable _GLPLIB_HUGEMEM of glplib2.c does not work for me. The error output was: *** malloc: vm_allocate(size=8421376) failed (error code=3) *** malloc[3857]: error: Can't allocate region umalloc: size = 8000; malloc failed Thank you very much. Best regards. Marcos -Original Message- From: Andrew Makhorin [mailto:[EMAIL PROTECTED] Sent: Tue 4/19/2005 4:44 PM To: Marcos Roberto Silva Cc: help-glpk@gnu.org Subject: Re: [Help-glpk] 64-bit with Mac G5 Hi Marcos, > "(May be replacing `int' by `long int' during compilation is a most > natural way to port Glpk on a 64-bit machine, however, I've never > tried that.)" > > Can I do this only with compiler flags? I don't know because I don't have a 64-bit machine. Looks like gcc translates `int' as well as `long int' to 32-bit integers, and only `long long int' to 64-bit integers; however, it seems to me there is no compiler flag to change `int' to `long long int'. Regards, Andrew Makhorin ___ Help-glpk mailing list Help-glpk@gnu.org http://lists.gnu.org/mailman/listinfo/help-glpk
