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-1.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 IPOPTma27 better
Solver COINIPOPTmumps infinitely faster : 1 1 - -
Solver COINIPOPTmumps much faster : 16 - 16 -
Solver COINIPOPTmumps faster : 1 - 1 -
Solvers perform the same : 3 - 3 -
Solver IPOPTma27 faster : 26 - 25 1
Solver IPOPTma27 much faster : 26 - 26 -
Solver IPOPTma27 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 (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
glider2001094.5800infeasible -- -1.24880943E+03 -5.07735343E-10

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Solver COINIPOPTmumps much faster - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
arki00210.43001.14000.377 -7.25821009E+01 -7.25821009E+01
arki00220.72002.19000.329 -8.70990913E+01 -8.70990913E+01
arki00231.54008.26000.186 -1.53660078E+02 -1.53660078E+02
elec20056.26001218.37000.046 1.84392677E+04 1.84392677E+04
jbearing1000.77007.01000.110 -1.55041943E-01 -1.55041943E-01
jbearing250.22000.51000.431 -1.54015507E-01 -1.54015507E-01
jbearing500.32001.64000.195 -1.54823813E-01 -1.54823813E-01
jbearing750.51003.77000.135 -1.54984461E-01 -1.54984461E-01
minsurf1000.80008.92000.090 2.50694962E+00 2.50694962E+00
minsurf250.21000.61000.344 2.51948798E+00 2.51948798E+00
minsurf500.36002.29000.157 2.51489003E+00 2.51489003E+00
minsurf752.200015.04000.146 2.50568692E+00 2.50568679E+00
torsion1000.840013.53000.062 -4.18239199E-01 -4.18239199E-01
torsion250.17000.82000.207 -4.17510726E-01 -4.17510726E-01
torsion500.43003.52000.122 -4.18087625E-01 -4.18087625E-01
torsion750.59007.79000.076 -4.18199390E-01 -4.18199390E-01

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Solver COINIPOPTmumps faster - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
arki00200.14000.19000.737 -4.10749544E+01 -4.10749544E+01

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Solvers perform the same - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
arki00044.38004.09001.071 3.27733013E+02 3.27733013E+02
ex8_2_5b10.09009.36001.078 -8.30338068E+02 -8.30338068E+02
lnts1000.10000.0200--- 5.54595401E-01 5.54595401E-01

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Solver IPOPTma27 faster - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
arki001191.800058.49001.569 -2.24086460E+05 -2.24086460E+05
arki0012152.730093.70001.630 -2.24252426E+05 -2.24252427E+05
arki0013130.160072.03001.807 -2.24253085E+05 -2.24253085E+05
arki0014123.830066.21001.870 -2.23977056E+05 -2.23977086E+05
arki00155.80002.97001.953 -2.66940688E+02 -2.66940688E+02
catmix1000.07000.06001.167 -4.80694133E-02 -4.80694133E-02
catmix2000.08000.05001.600 -4.80591358E-02 -4.80591358E-02
catmix4000.15000.10001.500 -4.80565435E-02 -4.80565435E-02
catmix8000.26000.19001.368 -4.80558974E-02 -4.80558974E-02
chain4000.08000.06001.333 5.06862169E+00 5.06862169E+00
ex8_2_2a4.74002.45001.935 -5.52666259E+02 -5.52666259E+02
ex8_2_3a11.24006.59001.706 -3.73107930E+03 -3.73107930E+03
ex8_2_3b13.36007.82001.708 -3.73107930E+03 -3.73107930E+03
ex8_2_5a3.39002.70001.256 -8.30338068E+02 -8.30338068E+02
flowchan1000.10000.05002.000 0.00000000E+00 0.00000000E+00
gasoil4001.71001.06001.613 5.23659583E-03 5.23659583E-03
infeas10.72000.41001.756 1.36855965E+04 1.36855965E+04
methanol1000.49000.29001.690 9.02229108E-03 9.02229108E-03
methanol4006.82004.74001.439 9.02228986E-03 9.02228992E-03
methanol500.22000.14001.571 9.02228685E-03 9.02228685E-03
polygon1004.91004.12001.192 -7.85056137E-01 -7.85056137E-01
polygon755.52003.13001.764 -7.84463757E-01 -7.84463757E-01
popdynm1000.54000.40001.350 1.97465286E+04 1.97465286E+04
popdynm2001.32000.86001.535 1.97465296E+04 1.97465296E+04
rocket400233.5700127.79001.828 -1.01283661E+00 -1.01283661E+00

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Solver IPOPTma27 faster - Obj of IPOPTma27 better:

Modelname Time (COINIPOPTmumps) Time (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
methanol2005.79003.43001.688 1.72607545E-02 9.02228981E-03

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Solver IPOPTma27 much faster - Obj same for both solvers:

Modelname Time (COINIPOPTmumps) Time (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
arki00020.33000.06005.500 1.87252774E+00 1.87252774E+00
arki001616.00002.37006.751 8.67973166E+02 8.67973166E+02
arki00171.55000.47003.298 -1.21833080E+02 -1.21833080E+02
arki00180.85000.33002.576 1.04566244E-02 1.04566244E-02
camshape4001.30000.20006.500 -4.27569663E+00 -4.27569663E+00
camshape800150.89000.3300457.242 -4.27430687E+00 -4.27430687E+00
ex8_2_2b6.42003.06002.098 -5.52666260E+02 -5.52666260E+02
flowchan2000.20000.08002.500 0.00000000E+00 0.00000000E+00
flowchan4000.43000.20002.150 0.00000000E+00 0.00000000E+00
gasoil1000.44000.18002.444 5.23659432E-03 5.23659432E-03
gasoil2000.77000.37002.081 5.23659587E-03 5.23659587E-03
gasoil500.20000.06003.333 5.23664002E-03 5.23664002E-03
lnts2000.16000.05003.200 5.54577016E-01 5.54577016E-01
lnts4000.28000.10002.800 5.54572414E-01 5.54572414E-01
pinene1000.47000.18002.611 1.98721701E+01 1.98721701E+01
pinene2000.98000.48002.042 1.98721668E+01 1.98721668E+01
pinene250.26000.08003.250 1.98721655E+01 1.98721655E+01
pinene500.26000.09002.889 1.98721655E+01 1.98721655E+01
polygon250.13000.06002.167 -7.79740541E-01 -7.79740541E-01
polygon501.66000.74002.243 -7.82132559E-01 -7.82132559E-01
popdynm250.29000.11002.636 1.97522154E+04 1.97522154E+04
popdynm500.93000.13007.154 1.97465452E+04 1.97465452E+04
robot2000.85000.30002.833 9.14139688E+00 9.14139684E+00
robot4002.65000.82003.232 9.14102607E+00 9.14102607E+00
rocket1005.52002.30002.400 -1.01283202E+00 -1.01283202E+00
rocket20032.950013.81002.386 -1.01283569E+00 -1.01283569E+00

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

Modelname Time (COINIPOPTmumps) Time (IPOPTma27) Ratio (COINIPOPTmumps / IPOPTma27) Obj (COINIPOPTmumps) Obj (IPOPTma27)
arki0003fail fail -- 6.89783289E+02 2.58498717E+03
arki0008fail fail -- 0.00000000E+00 3.20252348E+05
ex8_2_2fail fail -- -8.55645447E+02 -1.40558229E+03
glider100infeasible infeasible -- 0.00000000E+00 -3.55524467E-10
glider400infeasible infeasible -- -4.58744941E-10 -1.02593784E-09
glider50infeasible infeasible -- 0.00000000E+00 0.00000000E+00
robot100fail unbounded -- -2.33350341E+14 -1.01370790E+22
robot50unbounded fail -- -5.18779212E+21 -1.21570388E+20

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