Resource Times:

Results created on 11/09/09 18:57:38 using the PAVER Server/Performance tools available at

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 1.00E-05 For objective values below 1e-1 we use absolute differences.

Input File Number Filename
Tracefile 1: COINIPOPT-2.trc
Tracefile 2: IPOPT-2.trc
Solvers used : COINIPOPTmumps
Modeltype(s)   NLP
Threshold: Solver Faster 10%
Threshold: Solver Much Faster 50%
Threshold: Solver Infinitely Faster Other solver failed

Total Obj COINIPOPTmumps better Obj same Obj IPOPTmumps better
Solver COINIPOPTmumps infinitely faster : 1 1 - -
Solver COINIPOPTmumps much faster : 16 - 16 -
Solver COINIPOPTmumps faster : 7 - 6 1
Solvers perform the same : 39 - 39 -
Solver IPOPTmumps faster : 10 - 10 -
Solver IPOPTmumps much faster :- - - -
Solver IPOPTmumps infinitely faster :- - - -
Both solvers failed to solve optimally : 8 - 8 -
Total models: : 811791

Solver return definition:

Outcome Model Status Solver 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

Resource Times:

Solver COINIPOPTmumps infinitely faster - Obj of COINIPOPTmumps better:

Modelname Time (COINIPOPTmumps) Time (IPOPTmumps) Ratio (COINIPOPTmumps / IPOPTmumps) Obj (COINIPOPTmumps) Obj (IPOPTmumps)
glider2001094.5800infeasible -- -1.24880943E+03 -5.89894471E+01

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Solver COINIPOPTmumps much faster - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTmumps) Ratio (COINIPOPTmumps / IPOPTmumps) Obj (COINIPOPTmumps) Obj (IPOPTmumps)
arki00210.43001.37000.314 -7.25821009E+01 -7.25821009E+01
arki00220.72002.49000.289 -8.70990913E+01 -8.70990913E+01
arki00231.54009.06000.170 -1.53660078E+02 -1.53660078E+02
elec20056.26001213.61000.046 1.84392677E+04 1.84392677E+04
jbearing1000.77007.21000.107 -1.55041943E-01 -1.55041943E-01
jbearing250.22000.58000.379 -1.54015507E-01 -1.54015507E-01
jbearing500.32001.77000.181 -1.54823813E-01 -1.54823813E-01
jbearing750.51003.98000.128 -1.54984461E-01 -1.54984461E-01
minsurf1000.80009.17000.087 2.50694962E+00 2.50694962E+00
minsurf250.21000.65000.323 2.51948798E+00 2.51948798E+00
minsurf500.36002.29000.157 2.51489003E+00 2.51489003E+00
minsurf752.200014.74000.149 2.50568692E+00 2.50568709E+00
torsion1000.840013.69000.061 -4.18239199E-01 -4.18239199E-01
torsion250.17000.86000.198 -4.17510726E-01 -4.17510726E-01
torsion500.43003.68000.117 -4.18087625E-01 -4.18087625E-01
torsion750.59007.96000.074 -4.18199390E-01 -4.18199390E-01

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Solver COINIPOPTmumps faster - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTmumps) Ratio (COINIPOPTmumps / IPOPTmumps) Obj (COINIPOPTmumps) Obj (IPOPTmumps)
arki00044.38004.92000.890 3.27733013E+02 3.27733013E+02
arki001191.8000115.07000.798 -2.24086460E+05 -2.24086460E+05
arki00200.14000.26000.538 -4.10749544E+01 -4.10749544E+01
camshape800150.8900167.68000.900 -4.27430687E+00 -4.27430687E+00
catmix2000.08000.09000.889 -4.80591358E-02 -4.80591358E-02
polygon755.52006.29000.878 -7.84463757E-01 -7.84463757E-01

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Solver COINIPOPTmumps faster - Obj of IPOPTmumps better:

Modelname Time (COINIPOPTmumps) Time (IPOPTmumps) Ratio (COINIPOPTmumps / IPOPTmumps) Obj (COINIPOPTmumps) Obj (IPOPTmumps)
methanol2005.79007.55000.767 1.72607545E-02 9.02228981E-03

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Solvers perform the same - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTmumps) Ratio (COINIPOPTmumps / IPOPTmumps) Obj (COINIPOPTmumps) Obj (IPOPTmumps)
arki0012152.7300152.71001.000 -2.24252426E+05 -2.24252443E+05
arki0013130.1600119.27001.091 -2.24253085E+05 -2.24253082E+05
arki0014123.8300122.79001.008 -2.23977056E+05 -2.23977074E+05
arki00155.80005.47001.060 -2.66940688E+02 -2.66940688E+02
arki001616.000015.75001.016 8.67973166E+02 8.67973166E+02
arki00171.55001.43001.084 -1.21833080E+02 -1.21833080E+02
arki00180.85000.83001.024 1.04566244E-02 1.04566244E-02
camshape4001.30001.32000.985 -4.27569663E+00 -4.27569663E+00
catmix4000.15000.14001.071 -4.80565435E-02 -4.80565435E-02
catmix8000.26000.28000.929 -4.80558974E-02 -4.80558974E-02
ex8_2_2a4.74004.47001.060 -5.52666259E+02 -5.52666259E+02
ex8_2_2b6.42006.04001.063 -5.52666260E+02 -5.52666260E+02
ex8_2_3a11.240010.61001.059 -3.73107930E+03 -3.73107930E+03
ex8_2_3b13.360012.46001.072 -3.73107930E+03 -3.73107930E+03
ex8_2_5a3.39003.48000.974 -8.30338068E+02 -8.30338068E+02
ex8_2_5b10.090010.79000.935 -8.30338068E+02 -8.30338068E+02
flowchan1000.10000.10001.000 0.00000000E+00 0.00000000E+00
flowchan2000.20000.19001.053 0.00000000E+00 0.00000000E+00
flowchan4000.43000.41001.049 0.00000000E+00 0.00000000E+00
gasoil4001.71001.61001.062 5.23659583E-03 5.23659583E-03
infeas10.72000.70001.029 1.36855965E+04 1.36855965E+04
lnts1000.10000.11000.909 5.54595401E-01 5.54595401E-01
lnts4000.28000.26001.077 5.54572414E-01 5.54572414E-01
methanol1000.49000.50000.980 9.02229108E-03 9.02229108E-03
methanol4006.82006.97000.978 9.02228986E-03 9.02228986E-03
pinene1000.47000.44001.068 1.98721701E+01 1.98721701E+01
pinene2000.98000.91001.077 1.98721668E+01 1.98721668E+01
pinene250.26000.24001.083 1.98721655E+01 1.98721655E+01
pinene500.26000.26001.000 1.98721655E+01 1.98721655E+01
polygon1004.91005.07000.968 -7.85056137E-01 -7.85056137E-01
polygon501.66001.55001.071 -7.82132559E-01 -7.82132559E-01
popdynm1000.54000.51001.059 1.97465286E+04 1.97465286E+04
popdynm2001.32001.41000.936 1.97465296E+04 1.97465296E+04
popdynm250.29000.32000.906 1.97522154E+04 1.97522154E+04
robot2000.85000.86000.988 9.14139688E+00 9.14139688E+00
robot4002.65002.65001.000 9.14102607E+00 9.14102607E+00
rocket1005.52005.72000.965 -1.01283202E+00 -1.01283202E+00
rocket20032.950033.57000.982 -1.01283569E+00 -1.01283569E+00
rocket400233.5700255.52000.914 -1.01283661E+00 -1.01283661E+00

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Solver IPOPTmumps faster - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTmumps) Ratio (COINIPOPTmumps / IPOPTmumps) Obj (COINIPOPTmumps) Obj (IPOPTmumps)
arki00020.33000.28001.179 1.87252774E+00 1.87252774E+00
catmix1000.07000.06001.167 -4.80694133E-02 -4.80694133E-02
chain4000.08000.07001.143 5.06862169E+00 5.06862169E+00
gasoil1000.44000.38001.158 5.23659432E-03 5.23659432E-03
gasoil2000.77000.68001.132 5.23659587E-03 5.23659587E-03
gasoil500.20000.15001.333 5.23664002E-03 5.23664002E-03
lnts2000.16000.13001.231 5.54577016E-01 5.54577016E-01
methanol500.22000.16001.375 9.02228685E-03 9.02228685E-03
polygon250.13000.10001.300 -7.79740541E-01 -7.79740541E-01
popdynm500.93000.72001.292 1.97465452E+04 1.97465452E+04

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

Modelname Time (COINIPOPTmumps) Time (IPOPTmumps) Ratio (COINIPOPTmumps / IPOPTmumps) Obj (COINIPOPTmumps) Obj (IPOPTmumps)
arki0003fail fail -- 6.89783289E+02 2.03364226E+03
arki0008fail fail -- 0.00000000E+00 0.00000000E+00
ex8_2_2fail fail -- -8.55645447E+02 -1.30247364E+03
glider100infeasible infeasible -- 0.00000000E+00 -2.18292806E-10
glider400infeasible infeasible -- -4.58744941E-10 -1.02538513E-09
glider50infeasible infeasible -- 0.00000000E+00 0.00000000E+00
robot100fail fail -- -2.33350341E+14 -2.01592568E+14
robot50unbounded unbounded -- -5.18779212E+21 -5.03900774E+21

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