Re: [Help-glpk] glpk tells me to contact support team - xmalloc failed.

[Andrew Makhorin]

> Running a rather large model and I get the following output (see
> below), which is solved by AMPL in about 17 minutes (very old 32 bit
> version).

> All other testing runs quickly (smaller models) for this glpk 32 bit
> version (4.47).

> When I try the 64 bit version, I error at line 70 of glpenv05.c almost
> immediately.

> Any thoughts on how to proceed?

To reduce the memory requirements you may try to solve your model in two
stages as follows:

glpsol -m MP_layout.mod -d MP_layout.dat -wlp MP_layout.lp --check
glpsol --lp MP_layout.lp ...

However, being of mip class your model may happen to be hard for glpk
because of its size, so glpsol may not be able to solve it to optimality
for a reasonable time.

Please see:
http://lists.gnu.org/archive/html/help-glpk/2008-07/msg00044.html
for some calculations about the memory requirements.