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over 3 hours

Yes, I am using jupyter notebook.  The problem is that it is stuck and it doesn't give any further messages after  Continuing optimization...

What does parameter Heuristics do?  Also, can I write any model as .mps too?  And thanks for answering my original question. 

There are no warnings. The model is written fine. I tested with MIPGap, but since the model is large it consumes too much time to get to MIPGap=0.  When I test a bigger number of elements that I wi...

How much RAM should be enough to run a complex model with  a model with 6336897 rows, 10316000 columns and 148118000 nonzeros Model fingerprint: 0x14661732 Variable types: 2000 continuous, 10314000...

Great advice, I will try them all. Thank you so much. 

So, I got the following: Minimize  0 CostPattern[T0] + 1.1283033680279922e+10 ConstantSubject ToBounds CostPattern[T0] >= 1e+100 Constant = 1End   I think when I was defining the variable CostPatte...

This is the result I got:  which based on my understanding to IIS means none of the constraints is causing infeasibility IIS computed: 0 constraints, 2 bounds IIS runtime: 0.04 seconds

Thank you for your response.  I used jupyter to construct constraints one by one, and I found that 2 constraints in particular take too long to construct. So you're right, that's why timelimit does...