Thank you very much!
Best regards
Roman
----- Original Message -----
From: Ray Zimmerman
To: MATPOWER discussion forum
Sent: Monday, October 06, 2008 4:38 PM
Subject: Re: What does "info" mean?
Hi Roman,
The return value 'info' is a solver-specific return code. In the case of
MINOPF, the values of 'info' have the following meanings ...
0 - optimal solution found
1 - infeasible problem
2 - unbounded or badly scaled
3 - iteration limit reached
4 - stalled
5 - superbasics limit is too small
6 - funobj or funcon requested termination
7 - funobj seems to be giving incorrect gradients
8 - funcon seems to be giving incorrect Jacobians
9 - current point cannot be improved
10 - numerical error satisfying linear constraints
11 - cannot find a superbasic to replace a basic var.
12 - basis factorization requested twice in a row
13 - near optimal solution found
20 - not enough storage for basis factorization
21 - error in basis LU package
22 - singular basis even after several fac. attempts
32 - system error: wrong # of basic variables
42 - not enough workspace to solve the problem
... for detailed explanations of each, you would have to get a copy of the
MINOS manual. Hope this helps.
--
Ray Zimmerman
Senior Research Associate
428-B Phillips Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645
On Oct 3, 2008, at 11:45 AM, Roman Korab wrote:
Hello Ray,
I'd like to ask what does it mean a number associated with variable "info"
in OPF results? I sometimes get 1, sometimes 4 or 5... For example I got:
f =
2.9369e+006
success =
1
info =
1
et =
16.0220
What does "info" mean?
Best regards
Roman
