Resource Times:

Results created on 11/09/09 18:57:37 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-1.trc
Tracefile 2: IPOPT-2.trc
Solvers used : COINIPOPTma27
Modeltype(s)   NLP
Threshold: Solver Faster 10%
Threshold: Solver Much Faster 50%
Threshold: Solver Infinitely Faster Other solver failed

Total Obj COINIPOPTma27 better Obj same Obj IPOPTmumps better
Solver COINIPOPTma27 infinitely faster : 1 1 - -
Solver COINIPOPTma27 much faster : 47 - 47 -
Solver COINIPOPTma27 faster : 19 - 19 -
Solvers perform the same : 5 - 5 -
Solver IPOPTmumps faster : 1 - 1 -
Solver IPOPTmumps much faster :- - - -
Solver IPOPTmumps infinitely faster :- - - -
Both solvers failed to solve optimally : 8 - 8 -
Total models: : 811800

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 COINIPOPTma27 infinitely faster - Obj of COINIPOPTma27 better:

Modelname Time (COINIPOPTma27) Time (IPOPTmumps) Ratio (COINIPOPTma27 / IPOPTmumps) Obj (COINIPOPTma27) Obj (IPOPTmumps)
glider2002014.5600infeasible -- -1.24880943E+03 -5.89894471E+01

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Solver COINIPOPTma27 much faster - Obj same for both solvers:

Modelname Time (COINIPOPTma27) Time (IPOPTmumps) Ratio (COINIPOPTma27 / IPOPTmumps) Obj (COINIPOPTma27) Obj (IPOPTmumps)
arki00020.06000.28000.214 1.87252774E+00 1.87252774E+00
arki001355.1900119.27000.463 -2.24253088E+05 -2.24253082E+05
arki001450.0200122.79000.407 -2.23977086E+05 -2.23977074E+05
arki00152.68005.47000.490 -2.66940688E+02 -2.66940688E+02
arki00170.43001.43000.301 -1.21833080E+02 -1.21833080E+02
arki00180.31000.83000.373 1.04566244E-02 1.04566244E-02
arki00200.07000.26000.269 -4.10749544E+01 -4.10749544E+01
arki00210.23001.37000.168 -7.25821009E+01 -7.25821009E+01
arki00220.35002.49000.141 -8.70990913E+01 -8.70990913E+01
arki00230.72009.06000.079 -1.53660078E+02 -1.53660078E+02
camshape4000.16001.32000.121 -4.27569663E+00 -4.27569663E+00
camshape8000.3200167.68000.002 -4.27430687E+00 -4.27430687E+00
elec20057.70001213.61000.048 1.84392677E+04 1.84392677E+04
flowchan2000.09000.19000.474 0.00000000E+00 0.00000000E+00
flowchan4000.17000.41000.415 0.00000000E+00 0.00000000E+00
gasoil1000.15000.38000.395 5.23659432E-03 5.23659432E-03
gasoil2000.33000.68000.485 5.23659587E-03 5.23659587E-03
gasoil500.06000.15000.400 5.23664002E-03 5.23664002E-03
jbearing1000.47007.21000.065 -1.55041943E-01 -1.55041943E-01
jbearing250.11000.58000.190 -1.54015507E-01 -1.54015507E-01
jbearing500.20001.77000.113 -1.54823813E-01 -1.54823813E-01
jbearing750.32003.98000.080 -1.54984461E-01 -1.54984461E-01
lnts2000.06000.13000.462 5.54577016E-01 5.54577016E-01
lnts4000.08000.26000.308 5.54572414E-01 5.54572414E-01
methanol2002.57007.55000.340 9.02228981E-03 9.02228981E-03
minsurf1000.58009.17000.063 2.50694962E+00 2.50694962E+00
minsurf250.13000.65000.200 2.51948798E+00 2.51948798E+00
minsurf500.26002.29000.114 2.51489003E+00 2.51489003E+00
minsurf751.570014.74000.107 2.50568664E+00 2.50568709E+00
pinene1000.16000.44000.364 1.98721701E+01 1.98721701E+01
pinene250.08000.24000.333 1.98721655E+01 1.98721655E+01
pinene500.08000.26000.308 1.98721655E+01 1.98721655E+01
polygon500.65001.55000.419 -7.82132559E-01 -7.82132559E-01
polygon752.87006.29000.456 -7.84463757E-01 -7.84463757E-01
popdynm1000.23000.51000.451 1.97465286E+04 1.97465286E+04
popdynm2000.64001.41000.454 1.97465296E+04 1.97465296E+04
popdynm250.14000.32000.438 1.97522154E+04 1.97522154E+04
popdynm500.16000.72000.222 1.97465452E+04 1.97465452E+04
robot2000.27000.86000.314 9.14139675E+00 9.14139688E+00
robot4000.76002.65000.287 9.14102607E+00 9.14102607E+00
rocket1001.84005.72000.322 -1.01283202E+00 -1.01283202E+00
rocket20011.830033.57000.352 -1.01283569E+00 -1.01283569E+00
rocket400116.9400255.52000.458 -1.01283661E+00 -1.01283661E+00
torsion1000.610013.69000.045 -4.18239199E-01 -4.18239199E-01
torsion250.13000.86000.151 -4.17510726E-01 -4.17510726E-01
torsion500.29003.68000.079 -4.18087625E-01 -4.18087625E-01
torsion750.45007.96000.057 -4.18199390E-01 -4.18199390E-01

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Solver COINIPOPTma27 faster - Obj same for both solvers:

Modelname Time (COINIPOPTma27) Time (IPOPTmumps) Ratio (COINIPOPTma27 / IPOPTmumps) Obj (COINIPOPTma27) Obj (IPOPTmumps)
arki00042.76004.92000.561 3.27733013E+02 3.27733013E+02
arki001180.7800115.07000.702 -2.24086460E+05 -2.24086460E+05
arki001612.300015.75000.781 8.67973166E+02 8.67973166E+02
catmix4000.09000.14000.643 -4.80565435E-02 -4.80565435E-02
catmix8000.15000.28000.536 -4.80558974E-02 -4.80558974E-02
ex8_2_2a2.33004.47000.521 -5.52666259E+02 -5.52666259E+02
ex8_2_2b3.05006.04000.505 -5.52666260E+02 -5.52666260E+02
ex8_2_3a6.760010.61000.637 -3.73107930E+03 -3.73107930E+03
ex8_2_3b8.190012.46000.657 -3.73107930E+03 -3.73107930E+03
ex8_2_5a2.41003.48000.693 -8.30338068E+02 -8.30338068E+02
ex8_2_5b8.610010.79000.798 -8.30338068E+02 -8.30338068E+02
gasoil4001.01001.61000.627 5.23659583E-03 5.23659583E-03
infeas10.35000.70000.500 1.36855965E+04 1.36855965E+04
methanol1000.27000.50000.540 9.02229108E-03 9.02229108E-03
methanol4004.09006.97000.587 9.02228992E-03 9.02228986E-03
methanol500.09000.16000.563 9.02228685E-03 9.02228685E-03
pinene2000.47000.91000.516 1.98721668E+01 1.98721668E+01
polygon1003.84005.07000.757 -7.85056137E-01 -7.85056137E-01
polygon250.07000.10000.700 -7.79740541E-01 -7.79740541E-01

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Solvers perform the same - Obj same for both solvers:

Modelname Time (COINIPOPTma27) Time (IPOPTmumps) Ratio (COINIPOPTma27 / IPOPTmumps) Obj (COINIPOPTma27) Obj (IPOPTmumps)
catmix1000.04000.0600--- -4.80694133E-02 -4.80694133E-02
catmix2000.04000.0900--- -4.80591358E-02 -4.80591358E-02
chain4000.02000.0700--- 5.06862169E+00 5.06862169E+00
flowchan1000.03000.1000--- 0.00000000E+00 0.00000000E+00
lnts1000.03000.1100--- 5.54595401E-01 5.54595401E-01

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Solver IPOPTmumps faster - Obj same for both solvers:

Modelname Time (COINIPOPTma27) Time (IPOPTmumps) Ratio (COINIPOPTma27 / IPOPTmumps) Obj (COINIPOPTma27) Obj (IPOPTmumps)
arki0012175.0900152.71001.147 -2.24252435E+05 -2.24252443E+05

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

Modelname Time (COINIPOPTma27) Time (IPOPTmumps) Ratio (COINIPOPTma27 / IPOPTmumps) Obj (COINIPOPTma27) Obj (IPOPTmumps)
arki0003infeasible fail -- 8.63071054E+00 2.03364226E+03
arki0008fail fail -- 3.28465611E+05 0.00000000E+00
ex8_2_2fail fail -- -1.40516419E+03 -1.30247364E+03
glider100infeasible infeasible -- 0.00000000E+00 -2.18292806E-10
glider400infeasible infeasible -- -1.17108212E-09 -1.02538513E-09
glider50infeasible infeasible -- 0.00000000E+00 0.00000000E+00
robot100unbounded fail -- -1.00002177E+24 -2.01592568E+14
robot50unbounded unbounded -- -2.50210118E+23 -5.03900774E+21

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