[Cbc] Question about memory usage & std::string

[Christoph Cullmann]

Hi,

I just profile the memory usage of the solving of some of our large scale ILPs.

The biggest usage is by far the stored column/row names (>> 70-80% of used memory).

It seems that they are internally coppied a lot (e.g. during presolving, simplex, ...).
That seems to be ok, for std::strings that are copy-on-write, like older GCCs,
but with more recent GCCs (and libstdc++) versions or clang/MSVC, you have no copy-on-write.

Is that a known issue or is there an easy way to rectify this?

Greetings
Christoph

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