column generation

[Harvey Greenberg]

Is anyone doing column generation with Pyomo?

[Watson, Jean-paul]

Not that I'm aware of.

jpw

Sent from my iPhone

On Apr 13, 2013, at 1:13 PM, "Harvey Greenberg" <hjgre...@gmail.com> wrote:

Is anyone doing column generation with Pyomo?

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[William Hart]

Not now, but our plan is to start soon.  We have a customer who wants this feature.

--Bill

On Sat, Apr 13, 2013 at 1:13 PM, Harvey Greenberg <hjgre...@gmail.com> wrote:

Is anyone doing column generation with Pyomo?

[Optimization team]

Hi Bill, 
I tried to run this code developed by your team 

https://github.com/Pyomo/pyomo/blob/main/examples/pyomo/columngeneration/cutting_stock.py

but I face with the following error 

Could you please advise ? 

[Michael Bynum]

This error is basically saying you need to use one of the persistent solver interfaces (gurobi_persistent, xpress_persistent, cplex_persistent): 

python cutting_stock.py gurobi_persistent

Hope this helps.

Michael