## Solver Square Comparison: Considers all models.

 Date / Time: 08/24/07 21:51:47

Solver comparison utility.

Compares all solver return outcomes (for example optimal, locally optimal, infeasible, unbounded, fail) of one solver with all return outcomes of another solver. Interrupt denotes resource or iteration limit has been reached. Solver SBB-IPOPT is represented on the left (rows) and solver SBB-CONOPT-IPOPT on top (columns). See the solver return definitions for return codes.

Models having trace data only in one trace file are listed in the "no data" column of the other.

 Tracefile 1 : 2-SBB-2.trc.convex Tracefile 2 : 4-SBB-4.trc.convex Solvers used : SBB-IPOPT SBB-CONOPT-IPOPT Modeltype(s) MINLP

 SBB-CONOPT-IPOPT: optimal SBB-CONOPT-IPOPT: feasible SBB-CONOPT-IPOPT: infeasible SBB-CONOPT-IPOPT: unbounded SBB-CONOPT-IPOPT: fail SBB-CONOPT-IPOPT: no data total SBB-IPOPT SBB-IPOPT: optimal - - - - - - - SBB-IPOPT: feasible - 31 - - - - 31 SBB-IPOPT: infeasible - - - - - - - SBB-IPOPT: unbounded - - - - - - - SBB-IPOPT: fail - - - - 5 - 5 SBB-IPOPT: no data - - - - - - - total SBB-CONOPT-IPOPT - 31 - - 5 - 36

### Solver return definitions:

 Outcome Model Status Solver Status optimal 1 or 15 1 locally optimal 2 any feasible 8 or 16 1 or 2 or 3 or 4 or 5 infeasible 4 or 5 or 10 or 19 1 unbounded 3 or 18 1 fail all other all other

### Solver Resource Times

• Models for each solver pair outcome. Listed are the solver resource times TIME(.) in seconds, as well as the ratio RATIO(./.) of resource times for the two solvers if both solved optimally.
• Also listed are the objective values OBJ(.) using both solvers. The better solution found is listed in boldface. A solution is considered better, if the relative objective function difference is greater than 1.00E-05. If both solutions are less than 1e-1, we use the absolute difference.
• Solver resource time ratios for a particular model are listed only if one solver has resource greater than 5.00E-02.

 Modelname Time (SBB-IPOPT) Time (SBB-CONOPT-IPOPT) Ratio (SBB-IPOPT/SBB-CONOPT-IPOPT) Obj (SBB-IPOPT) Obj (SBB-CONOPT-IPOPT) alan 0.0800 0.0400 2.000 2.92500000 2.92500000 batch 1.7200 0.7200 2.389 285506.50825285 285506.50815158 du-opt 3.9200 1.7300 2.266 3.56468638 3.56108965 du-opt5 52.3300 20.8200 2.513 8.07365758 8.07365758 ex1223 0.2200 0.0400 5.500 4.57958240 4.57958240 ex1223a 0.0800 0.0100 8.000 4.57958240 4.57958240 ex1223b 0.1700 0.0300 5.667 4.57958240 4.57958240 fac1 1.8800 0.0200 94.000 160912612.35016900 160912612.35016900 fac3 7.2900 0.1900 38.368 31982309.84800030 31982309.84800000 m3 1.9000 1.1700 1.624 37.80000000 37.80000000 m6 261.6500 351.4800 0.744 106.25687691 129.82493644 m7 270.0900 425.1600 0.635 118.75687691 123.96437781 meanvarx 0.2800 0.0100 28.000 14.40406225 14.49698300 nvs03 0.1500 0.0500 3.000 16.00000000 16.00000000 nvs10 0.0600 0.0100 6.000 -310.80000000 -310.80000000 risk2b 32.0900 0.3700 86.730 -55.73616850 -55.73616850 risk2bpb 20.8300 0.4300 48.442 -55.73616850 -55.73616850 st_e14 0.2000 0.0400 5.000 4.57958240 4.57958240 st_miqp1 0.1300 0.0100 13.000 281.00000000 281.00000000 st_miqp2 0.3000 0.0100 30.000 2.00000000 2.00000000 st_miqp4 0.1300 0.0000 +INF.000 -3092.82488276 -4574.00000000 stockcycle 31.3700 98.6000 0.318 119948.68833333 143295.16500000 st_test5 0.7100 0.0400 17.750 -110.00000000 -110.00000000 st_test6 0.7700 0.1100 7.000 471.00000000 471.00000000 st_test8 0.0700 0.0100 7.000 -29604.99999999 -29605.00000000 st_testgr1 0.3000 0.0300 10.000 -12.72810000 -12.72810000 st_testgr3 4.1900 0.0300 139.667 -20.52740000 -20.46880000 st_testph4 0.0700 0.0200 3.500 -80.50000000 -80.50000000 synthes1 0.1200 0.0100 12.000 6.00975891 6.00975891 synthes2 0.4500 0.0800 5.625 73.03531253 73.03531253 synthes3 1.3000 0.1600 8.125 68.00974052 68.00974052

 Modelname Time (SBB-IPOPT) Time (SBB-CONOPT-IPOPT) Ratio (SBB-IPOPT/SBB-CONOPT-IPOPT) Status (SBB-IPOPT) Status (SBB-CONOPT-IPOPT) fo7 198.7200 416.1200 --- mstat(14) sstat( 4) mstat(14) sstat( 4) o7 226.7200 437.5700 --- mstat(14) sstat( 4) mstat(14) sstat( 4) tls12 3600.0000 585.2100 --- mstat(14) sstat( 3) mstat(14) sstat( 4) tls6 3600.6100 394.3000 --- mstat(14) sstat( 3) mstat(14) sstat( 4) tls7 2353.8500 297.2600 --- mstat(14) sstat( 4) mstat(14) sstat( 4)

 Modelname Time (SBB-IPOPT) Obj (SBB-IPOPT) alan 0.0800 2.92500000 batch 1.7200 285506.50825285 du-opt 3.9200 3.56468638 du-opt5 52.3300 8.07365758 ex1223 0.2200 4.57958240 ex1223a 0.0800 4.57958240 ex1223b 0.1700 4.57958240 fac1 1.8800 160912612.35016900 fac3 7.2900 31982309.84800030 gbd 0.0400 2.20000000 m3 1.9000 37.80000000 m6 261.6500 106.25687691 m7 270.0900 118.75687691 meanvarx 0.2800 14.40406225 nvs03 0.1500 16.00000000 nvs10 0.0600 -310.80000000 risk2b 32.0900 -55.73616850 risk2bpb 20.8300 -55.73616850 st_e14 0.2000 4.57958240 st_e35 4.0000 64868.07685843 st_miqp1 0.1300 281.00000000 st_miqp2 0.3000 2.00000000 st_miqp4 0.1300 -3092.82488276 stockcycle 31.3700 119948.68833333 st_test5 0.7100 -110.00000000 st_test6 0.7700 471.00000000 st_test8 0.0700 -29604.99999999 st_testgr1 0.3000 -12.72810000 st_testgr3 4.1900 -20.52740000 st_testph4 0.0700 -80.50000000 synthes1 0.1200 6.00975891 synthes2 0.4500 73.03531253 synthes3 1.3000 68.00974052

 Modelname Time (SBB-IPOPT) Status (SBB-IPOPT) fo7 -- mstat(14) sstat( 4) o7 -- mstat(14) sstat( 4) tls12 -- mstat(14) sstat( 3) tls6 -- mstat(14) sstat( 3) tls7 -- mstat(14) sstat( 4)

 Modelname Time (SBB-CONOPT-IPOPT) Obj (SBB-CONOPT-IPOPT) alan 0.0400 2.92500000 batch 0.7200 285506.50815158 du-opt 1.7300 3.56108965 du-opt5 20.8200 8.07365758 ex1223 0.0400 4.57958240 ex1223a 0.0100 4.57958240 ex1223b 0.0300 4.57958240 fac1 0.0200 160912612.35016900 fac3 0.1900 31982309.84800000 m3 1.1700 37.80000000 m6 351.4800 129.82493644 m7 425.1600 123.96437781 meanvarx 0.0100 14.49698300 nvs03 0.0500 16.00000000 nvs10 0.0100 -310.80000000 risk2b 0.3700 -55.73616850 risk2bpb 0.4300 -55.73616850 st_e14 0.0400 4.57958240 st_miqp1 0.0100 281.00000000 st_miqp2 0.0100 2.00000000 st_miqp4 0.0000 -4574.00000000 stockcycle 98.6000 143295.16500000 st_test5 0.0400 -110.00000000 st_test6 0.1100 471.00000000 st_test8 0.0100 -29605.00000000 st_testgr1 0.0300 -12.72810000 st_testgr3 0.0300 -20.46880000 st_testph4 0.0200 -80.50000000 synthes1 0.0100 6.00975891 synthes2 0.0800 73.03531253 synthes3 0.1600 68.00974052