[Ipopt] Restoration failed in IPOPT/GAMS

Nhi Nguyen ninguyen2204 at gmail.com
Mon Jan 26 11:20:16 EST 2015

Hi all,

I'm solving a large-scale RMINLP model in GAMS using IPOPT. Since my model
is too big (more than 500.000 variables, more than 500.000 inequality
constraints and about 400.000 equality constraints), it ends up with:
Restoration failed!. I already set the option mump_mem_percent to a very
small value to save memory but it is still out of memory.

Could anyone tell me how to deal with this problem?

Thank you very much!

Kind regards,
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