[Ipopt] Size of KKT matrix

[Tony Kelman]

There may be slack variables being introduced for inequality constraints. 
Some more of the output information (how many variables, bounds, constraints 
Ipopt thinks your problem has) and/or description of your problem structure 
would be helpful to figure out what you're seeing vs what you're expecting.

-Tony


-----Original Message----- 
From: Senses,Begum
Sent: Sunday, October 27, 2013 6:38 PM
To: ipopt at list.coin-or.org
Subject: [Ipopt] Size of KKT matrix



Hello everyone,

When I print the KKT matrix right before IPOPT calls MA57, size of this
KKT matrix is larger than I am expecting to get. I know that IPOPT
removes fixed variables from KKT matrix but I am sure why IPOPT is
adding some rows to hessian (and some columns to Jacobian).

Thanks
-- 
Senses, Begum
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