Resource Times:

Date / Time: 10/19/08 15:15:38


See the solver return definitions for optimal/feasible model and solve statuses. Solutions are not checked for how close they are to eachother. Resource times are considered the same, if they are within 10% of eachother. A solver is considered faster than another, if it is less than 50% faster than the other. A solver is considered much faster than another, if it is more than 50% faster than the other.

If a model was not solved optimal/feasible by both solvers, the resource time is considered the same. If a model was solved optimal/feasible by solver A but not by solver B, then solver A is considered infinitely faster than solver B. Similarly, if one solver has trace data and the other has no data, then the first solver is consideredinfinitely faster.

A solver is considered to have a better objective function value, if the relative objective value difference is greater than 5.00E-03 For objective values below 1e-1 we use absolute differences.

Tracefile 1 :IPOPT-2.trc
Tracefile 2 :MINOS-1.trc
Solvers used : IPOPTMUMPS
MINOS
Modeltype(s)   NLP
Threshold: Solver Faster 10%
Threshold: Solver Much Faster 50%
Threshold: Solver Infinitely Faster Other solver failed


Total Obj IPOPTMUMPS better Obj same Obj MINOS better
Solver IPOPTMUMPS infinitely faster : 7 7 - -
Solver IPOPTMUMPS much faster : 31 2 27 2
Solver IPOPTMUMPS faster : 8 1 7 -
Solvers perform the same : 6 - 6 -
Solver MINOS faster : 10 1 9 -
Solver MINOS much faster : 14 3 10 1
Solver MINOS infinitely faster : 1 - - 1
Both solvers failed to solve optimally : 4 - 4 -
Total models: : 8114634




Solver return definition:

OutcomeModel StatusSolver Status
globally optimal 1 or 15 1
locally optimal/feasible 2 or 7 or 16 or 17 1 or 2 or 3 or 4 or 5 or 8




Resource Times:

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Solver IPOPTMUMPS infinitely faster - Obj of IPOPTMUMPS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki00173.5100infeasible -- -1.21833080E+02 1.33863244E+02
camshape4000.9200infeasible -- -4.27568847E+00 -4.10403065E+00
camshape8001.6700infeasible -- -4.27427413E+00 -4.10192270E+00
glider1008.7200infeasible -- -2.50000000E+02 -1.48525961E+02
glider40043.4900infeasible -- -2.50000000E+02 -1.27559734E+02
methanol2007.5900unbounded -- 9.02228981E-03 3.69835440E+14
rocket4003.0800infeasible -- -1.01283661E+00 -1.00240501E+00

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Solver IPOPTMUMPS much faster - Obj of IPOPTMUMPS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
polygon1007.770018.28000.425 -7.85056137E-01 -6.88404452E-01
polygon502.11007.10000.297 -7.82132559E-01 -6.88404452E-01

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Solver IPOPTMUMPS much faster - Obj same for both solvers:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki0012172.9100922.10000.188 -2.24252442E+05 -2.24252445E+05
arki0013148.00001010.63000.146 -2.24253088E+05 -2.24253088E+05
arki0014109.55001261.65000.087 -2.23976861E+05 -2.23977093E+05
arki00181.22003600.32000.000 1.04566244E-02 1.05840193E-02
arki00200.510013.04000.039 -4.10749544E+01 -4.10749544E+01
arki00212.1100125.98000.017 -7.25821009E+01 -7.25821009E+01
arki00225.2600260.41000.020 -8.70990913E+01 -8.70990913E+01
arki002313.61002033.47000.007 -1.53660078E+02 -1.53660078E+02
catmix2000.18000.43000.419 -4.80591358E-02 -4.80591095E-02
chain4000.15002.75000.055 5.06862169E+00 5.06862169E+00
ex8_2_2a8.380023.51000.356 -5.52666259E+02 -5.52642400E+02
ex8_2_5a7.820017.75000.441 -8.30338067E+02 -8.30332127E+02
gasoil4002.73006.73000.406 5.23659583E-03 5.23659581E-03
jbearing1009.1900111.10000.083 -1.55041943E-01 -1.55041962E-01
jbearing251.13004.18000.270 -1.54015506E-01 -1.54015540E-01
jbearing502.380020.47000.116 -1.54823813E-01 -1.54824222E-01
jbearing755.540055.78000.099 -1.54984461E-01 -1.54984535E-01
lnts2000.27000.74000.365 5.54577016E-01 5.54577016E-01
lnts4000.45003.26000.138 5.54572414E-01 5.54572414E-01
minsurf10011.5400223.68000.052 2.50694962E+00 2.50694926E+00
minsurf251.24005.43000.228 2.51948798E+00 2.51948768E+00
minsurf503.410030.00000.114 2.51489003E+00 2.51488916E+00
minsurf7519.060094.13000.202 2.50568704E+00 2.50568648E+00
torsion10017.3900125.00000.139 -4.18239198E-01 -4.18239213E-01
torsion251.22004.02000.303 -4.17510726E-01 -4.17510730E-01
torsion506.940021.83000.318 -4.18087625E-01 -4.18087632E-01
torsion7510.180055.57000.183 -4.18199389E-01 -4.18199401E-01

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Solver IPOPTMUMPS much faster - Obj of MINOS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki00020.50002.03000.246 1.87252774E+00 1.06869312E+00
elec2001473.19003600.01000.409 1.84392677E+04 1.59789233E+04

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Solver IPOPTMUMPS faster - Obj of IPOPTMUMPS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
polygon757.33008.81000.832 -7.84463757E-01 -7.75441334E-01

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Solver IPOPTMUMPS faster - Obj same for both solvers:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
catmix1000.16000.28000.571 -4.80694133E-02 -4.80694010E-02
catmix8000.80001.08000.741 -4.80558974E-02 -4.80558421E-02
gasoil2001.16001.84000.630 5.23659587E-03 5.23659585E-03
pinene2002.09004.14000.505 1.98721668E+01 1.98721668E+01
popdynm1000.91001.30000.700 1.97465286E+04 1.97465286E+04
robot4003.01005.02000.600 9.14102607E+00 9.14102603E+00
rocket1000.70000.94000.745 -1.01283201E+00 -1.01283202E+00

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Solvers perform the same - Obj same for both solvers:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
catmix4000.49000.50000.980 -4.80565435E-02 -4.80565101E-02
ex8_2_3b20.030018.78001.067 -3.73107930E+03 -3.73072304E+03
methanol40010.300010.62000.970 9.02228993E-03 9.02228985E-03
pinene1001.03001.03001.000 1.98721701E+01 1.98721701E+01
popdynm2003.63003.97000.914 1.97465296E+04 1.97465296E+04
robot2001.16001.16001.000 9.14139688E+00 9.14139550E+00

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Solver MINOS faster - Obj of IPOPTMUMPS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
polygon250.14000.07002.000 -7.79740541E-01 -7.55410692E-01

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Solver MINOS faster - Obj same for both solvers:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki00045.83003.75001.555 3.27733013E+02 3.27733013E+02
flowchan1000.26000.0300--- 0.00000000E+00 0.00000000E+00
flowchan4000.72000.40001.800 0.00000000E+00 0.00000000E+00
lnts1000.19000.16001.188 5.54595401E-01 5.54595401E-01
methanol1001.20000.82001.463 9.02229108E-03 9.02229107E-03
methanol500.29000.24001.208 9.02228685E-03 9.02228684E-03
pinene250.58000.29002.000 1.98721655E+01 1.98721655E+01
pinene500.38000.30001.267 1.98721655E+01 1.98721655E+01
rocket2002.41002.01001.199 -1.01283568E+00 -1.01283550E+00

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Solver MINOS much faster - Obj of IPOPTMUMPS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki00164.45000.88005.057 8.67973166E+02 1.48811635E+03
ex8_2_3a17.81001.91009.325 -3.73107930E+03 -3.28293488E+03
robot1003600.04000.38009473.789 -2.27094614E+16 9.14268538E+00

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Solver MINOS much faster - Obj same for both solvers:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki0003110.05004.710023.365 3.79520607E+03 3.79520607E+03
arki0011105.390029.25003.603 -2.24086460E+05 -2.24086460E+05
ex8_2_2b12.95003.85003.364 -5.52666260E+02 -5.51591869E+02
ex8_2_5b15.41003.03005.086 -8.30338067E+02 -8.29345398E+02
flowchan2000.42000.11003.818 0.00000000E+00 0.00000000E+00
gasoil1001.01000.39002.590 5.23659432E-03 5.23659430E-03
gasoil500.39000.19002.053 5.23664002E-03 5.23664000E-03
infeas11.10000.29003.793 1.36855965E+04 1.36855965E+04
popdynm250.49000.16003.063 1.97522154E+04 1.97522154E+04
popdynm500.76000.36002.111 1.97465452E+04 1.97465452E+04

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Solver MINOS much faster - Obj of MINOS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki00159.04002.74003.299 -2.66940688E+02 -2.72299779E+02

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Solver MINOS infinitely faster - Obj of MINOS better:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
robot50fail 0.1300 -- -3.35784684E+16 9.14687850E+00

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Both solvers failed to solve optimally - Obj same for both solvers:

Modelname Time (IPOPTMUMPS) Time (MINOS) Ratio (IPOPTMUMPS / MINOS) Obj (IPOPTMUMPS) Obj (MINOS)
arki0008fail unbounded -- 0.00000000E+00 3.26224338E+05
ex8_2_2fail unbounded -- -1.48433782E+03 -6.27576550E+11
glider200infeasible infeasible -- 0.00000000E+00 -1.76628751E+02
glider50infeasible infeasible -- 0.00000000E+00 -1.52864377E+02

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