[Ipopt] Restoration failed in IPOPT/GAMS

[Nhi Nguyen]

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,
Ni
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