[Coin-discuss] Problem that cbc aborts on

[John J Forrest]

Kim,

Sorry you could not compile branches/devel as problem had been fixed there.
I have corrected error which meant it needed ampl.

Should be OK now in trunk.

John Forrest



                                                                           
             "Kim Hansen"                                                  
             <kimhanse at gmail.c                                             
             om>                                                        To 
             Sent by:                  coin-discuss at list.coin-or.org       
             coin-discuss-boun                                          cc 
             ces at list.coin-or.                                             
             org                                                   Subject 
                                       [Coin-discuss] Problem that cbc     
                                       aborts on                           
             03/16/07 07:33 AM                                             
                                                                           
                                                                           
              Please respond                                               
               to Discussions                                               
             about open source                                             
               software for                                                
                Operations                                                 
                 Research                                                  
             <coin-discuss at lis                                             
              t.coin-or.org>                                               
                                                                           
                                                                           




Hi,  I have found a problem that cbc aborts on without telling me much about
why.  I have created a ticket in the trac:
https://projects.coin-or.org/Cbc/ticket/19

The output when trying to solve it with cbc
is: ========================= Model was imported from ./aborts-2007-03-16.mps
in 0.007999 seconds Optimal - objective value 33555.1 Cgl0006I 1 SOS (32
members out of 506) with 0 overlaps - too much overlap or too many
others Cgl0003I 1 fixed, 25 tightened bounds, 0 strengthened rows, 0
substitutions Cgl0003I 1 fixed, 0 tightened bounds, 0 strengthened rows, 0
substitutions Cgl0004I processed model has 208 rows, 123 columns (123
integer) and 870 elements processed model has 208 rows, 123 columns and 870
elements Optimal - objective value 33555.1 123 integer variables Cbc0009I
Objective coefficients multiple of 1 cutoff increment increased from 1e-05
to 0.999
 Aborted =========================  I have just found out that cbc-generic can
solve it: ========================= Cbc0001I Search completed - best
objective 133420, took 101 iterations and 0 nodes (0.05 seconds)
Result 133420 iterations 101 nodes 0 took 0.111983 seconds - total
0.120982 =========================  Regards, --
Kim Hansen Vadgårdsvej 3, 2.tv 2860 Søborg Fastnet: 3956 2437  --  Mobil: 3091
2437  _______________________________________________ Coin-discuss mailing
list Coin-discuss at list.coin-or.org
http://list.coin-or.org/mailman/listinfo/coin-discuss