What is the underlying API of COPT 32-bit or 64 bit

[Betristor]

Lately I have encountered a problem that Gurobi.jl will crush the machine when the number of variables exceeds 2147483647. I have some discussions with @odow, see here. The machine crushed because Gurobi.jl wraps 32-bit C API, leading to a limit of 2147483647 and my problem is oversized. I'm wondering if there is the same limit with COPT.jl.

[joachimdahl]

I think the same issue will happen in COPT.jl

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On Thu, Oct 31, 2024 at 3:50 AM Yuheng Zhang ***@***.***> wrote: Lately I have encountered a problem that Gurobi.jl will crush the machine when the number of variables exceeds 2147483647. I have some discussions with @odow <https://github.com/odow>, see here <https://discourse.julialang.org/t/large-scale-model-using-gurobi-causes-machine-crushed/121988/6>. The machine crushed because Gurobi.jl wraps 32-bit C API, leading to a limit of 2147483647 and my problem is oversized. I'm wondering if there is the same limit with COPT.jl. — Reply to this email directly, view it on GitHub <#42>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABNFJRQTNTTWRRJSVURQ3ELZ6GLFTAVCNFSM6AAAAABQ5NBYZKVHI2DSMVQWIX3LMV43ASLTON2WKOZSGYZDKOBVGQ4DEMA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[Betristor]

Ok, thanks. Same question as in the post, is there any plan to extend the limit?

[joachimdahl]

Maybe eventually, but I don't think we will change this in the short term.

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On Thu, Oct 31, 2024 at 9:42 AM Yuheng Zhang ***@***.***> wrote: Ok, thanks. Same question as in the post, is there any plan to extend the limit? — Reply to this email directly, view it on GitHub <#42 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABNFJRTXOYI2TKVZI5ITLDTZ6HUPVAVCNFSM6AAAAABQ5NBYZKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDINBZGMZDQNRVGE> . You are receiving this because you commented.Message ID: <COPT-Public/COPT .***@***.***>

[Betristor]

Thanks, now I do think it's necessary to reduce the problem size and I shall close this issue.