Resource Times:

Date / Time: 09/02/07 12:02:40


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.

Tracefile 1 :3-CBC-0.trc
Tracefile 2 :6-IPOPT-1.trc
Solvers used : CLP
IPOPT-MEHROTRA
Modeltype(s)   LP
Threshold: Solver Faster 10%
Threshold: Solver Much Faster 50%
Threshold: Solver Infinitely Faster Other solver failed


Total Obj CLP better Obj same Obj IPOPT-MEHROTRA better
Solver CLP infinitely faster : 15 15 - -
Solver CLP much faster : 69 4 65 -
Solver CLP faster : 10 1 9 -
Solvers perform the same : 4 1 3 -
Solver IPOPT-MEHROTRA faster : 5 1 4 -
Solver IPOPT-MEHROTRA much faster : 6 - 5 1
Solver IPOPT-MEHROTRA infinitely faster : 2 - - 2
Both solvers failed to solve optimally : 7 - 7 -
Total models: : 11822933




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




Resource Times:

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Solver CLP infinitely faster - Obj of CLP better:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
pds-060.4400fail -- 2.77610376E+10 1.64219107E+10
pds-101.0000fail -- 2.67270950E+10 1.00678044E+10
fome219.1500fail -- 4.73463189E+10 4.73516894E+10
nsct11.2100fail -- -3.89224360E+07 -2.25467780E+07
pds-3010.0100fail -- 2.13854457E+10 2.13904613E+10
pds-4018.3800fail -- 1.88551988E+10 1.89622609E+10
pds-5026.3100fail -- 1.66035257E+10 NA
pds-6039.7900fail -- 1.42659044E+10 NA
watson_1104.6500fail -- -1.60928072E+03 NA
dbir13.9100fail -- -8.10670700E+06 -8.10696689E+06
pds-10090.0600fail -- 1.09282300E+10 7.82268026E+08
pds-7053.7600fail -- 1.22411628E+10 NA
pds-8071.0200fail -- 1.14690775E+10 NA
pds-9076.1900fail -- 1.10875616E+10 NA
self6.5600fail -- 0.00000000E+00 NA

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Solver CLP much faster - Obj of CLP better:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
fome110.2400171.36000.001 0.00000000E+00 2.57121340E-03
fome120.4800347.73000.001 0.00000000E+00 5.14242656E-03
lpl30.81003706.65000.000 2.73180000E+04 3.45306786E+04
fome131.0100738.40000.001 0.00000000E+00 1.02848534E-02

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Solver CLP much faster - Obj same for both solvers:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
aa011.96004.65000.422 5.55354364E+04 5.55354364E+04
aa031.10003.26000.337 4.96163636E+04 4.96163636E+04
air020.06001.59000.038 7.64000000E+03 7.64000000E+03
air061.11003.26000.340 4.96163636E+04 4.96163636E+04
baxter1.030040.19000.026 5.60072557E+07 5.60072557E+07
cari0.34006.23000.055 5.81893058E+02 5.81893058E+02
cq51.33004.18000.318 4.00133807E+05 4.00133809E+05
cq96.510019.87000.328 5.05541710E+05 5.05541710E+05
crew10.16000.64000.250 2.05555556E+01 2.05555558E+01
gen11.21004.61000.262 1.21928894E-06 1.64521588E-06
ken-110.47003.29000.143 -6.97238226E+09 -6.97238226E+09
ken-131.30006.96000.187 -1.02573948E+10 -1.02573948E+10
lp2234.1800102.86000.332 4.58944594E+02 4.58944651E+02
maros-r72.910010.26000.284 1.49718517E+06 1.49718517E+06
mod25.60001184.66000.005 2.77373714E+07 2.77373714E+07
model1027.4100209.00000.131 -1.54599621E+05 -1.54599621E+05
model72.710032.91000.082 4.93800855E+04 4.93800855E+04
model91.630061.89000.026 -1.41123094E+05 -1.41123093E+05
nsir10.320024.20000.013 -2.89090330E+07 -2.89090330E+07
nsir20.50007.92000.063 -2.71755935E+07 -2.71755935E+07
osa-070.260018.63000.014 5.35722517E+05 5.35722517E+05
p0100.92003.65000.252 1.11504792E+06 1.11504792E+06
p050.34001.55000.219 5.56000277E+05 5.56000277E+05
pcb30000.75001.71000.439 1.37416420E+05 1.37416431E+05
r050.38007.62000.050 5.57831859E+05 5.57831859E+05
rat10.410014.94000.027 1.99953166E+06 1.99953166E+06
rat51.520013.42000.113 3.08370701E+06 3.08370701E+06
rosen100.13000.78000.167 -1.74215456E+05 -1.74215456E+05
scfxm1-2r-962.28008.03000.284 2.89170611E+03 2.89170611E+03
scrs8-2r-5120.2100126.96000.002 1.07409934E+03 1.07409934E+03
scsd8-2b-640.37000.99000.374 1.59986680E+01 1.59986681E+01
scsd8-2c-640.40001.01000.396 1.49992320E+01 1.49992320E+01
scsd8-2r-1080.12000.56000.214 2.36999943E+01 2.36999944E+01
scsd8-2r-2160.30001.26000.238 2.33999839E+01 2.33999841E+01
sctap1-2b-640.88002.07000.425 4.84560000E+02 4.84560000E+02
slptsk2.080011.16000.186 2.98953660E+01 2.98953660E+01
stocfor31.11002.28000.487 -3.99767839E+04 -3.99767839E+04
ulevimin33.370068.97000.484 -5.19110186E+09 -5.19110186E+09
wood1p0.12002.04000.059 1.44290241E+00 1.44290249E+00
world6.3600317.49000.020 4.03648731E+07 4.03648731E+07
bas1lp2.070039.31000.053 3.63000000E+02 3.63000000E+02
cre-b3.17003644.36000.001 2.31296399E+07 2.31296399E+07
cre-d1.96002394.95000.001 2.44549698E+07 2.44549698E+07
fome204.31003468.35000.001 2.38216586E+10 2.38216586E+10
ken-188.4400307.29000.027 -5.22170253E+10 -5.22170253E+10
kl020.550011.01000.050 2.15250000E+02 2.15250000E+02
nemsemm20.87005.86000.148 5.81079571E+05 5.81079644E+05
nsct22.0400749.41000.003 -3.71750820E+07 -3.71750820E+07
osa-140.820087.08000.009 1.10646284E+06 1.10646284E+06
osa-301.6500321.45000.005 2.14213987E+06 2.14213987E+06
pds-204.21003497.04000.001 2.38216586E+10 2.38216586E+10
rail50711.000023.17000.475 1.72145567E+02 1.72145567E+02
rail5163.630019.73000.184 1.82000000E+02 1.82000001E+02
rail5827.860031.64000.248 2.09712233E+02 2.09712233E+02
rlfddd0.320012.30000.026 -1.30000000E+01 -1.29999999E+01
rlfprim1.190081.78000.015 1.00000000E+00 1.00000069E+00
route0.40009.62000.042 5.94165028E+03 5.94165028E+03
scsd8-2r-4320.85002.95000.288 2.57999695E+01 2.57999725E+01
sctap1-2r-4802.05004.82000.425 2.48500000E+02 2.48500000E+02
us046.480017.68000.367 1.77316667E+04 1.77316667E+04
dbic1306.58001592.51000.193 -9.76897300E+06 -9.76897300E+06
dbir23.0800229.40000.013 -6.11691650E+06 -6.11691650E+06
nemsemm12.870044.46000.065 5.12959601E+05 5.12959684E+05
nw142.7800351.46000.008 6.18440000E+04 6.18440000E+04
osa-605.94002070.47000.003 4.04407250E+06 4.04407250E+06

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Solver CLP faster - Obj of CLP better:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
rail25862059.18003607.58000.571 9.35921821E+02 6.55733663E+03

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Solver CLP faster - Obj same for both solvers:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
co52.94005.32000.553 7.14469554E+05 7.14469581E+05
co913.950023.06000.605 9.46920430E+05 9.46920496E+05
fit2d3.51004.91000.715 -6.84642933E+04 -6.84642932E+04
jendrec12.69003.26000.825 7.02846051E+03 7.02846052E+03
model53.92007.49000.523 -8.58440729E+05 -8.58440713E+05
scfxm1-2r-641.12001.62000.691 2.87756386E+03 2.87756386E+03
testbig1.01001.18000.856 -6.04229607E+01 -6.04229606E+01
rat7a20.930038.35000.546 2.07437142E+06 2.07437142E+06
t0331-4l18.050023.01000.784 2.97300334E+04 2.97300334E+04

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Solvers perform the same - Obj of CLP better:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
pilot8712.530013.87000.903 3.01710366E+02 3.01715799E+02

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Solvers perform the same - Obj same for both solvers:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
nemspmm23.40003.36001.012 -2.91794836E+05 -2.91794828E+05
scfxm1-2b-643.70004.11000.900 2.87756386E+03 2.87756386E+03
rlfdual60.220056.70001.062 -1.00000000E+00 -9.99999942E-01

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Solver IPOPT-MEHROTRA faster - Obj of CLP better:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
model112.65002.02001.312 0.00000000E+00 1.68670562E-04

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Solver IPOPT-MEHROTRA faster - Obj same for both solvers:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
car41.59001.23001.293 3.54603702E+01 3.54603861E+01
nemspmm13.36002.04001.647 -3.27415836E+05 -3.27415836E+05
nemswrld50.800036.76001.382 2.60308966E+02 2.60309063E+02
scfxm1-2r-25616.280011.15001.460 2.89170611E+03 2.89170611E+03

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Solver IPOPT-MEHROTRA much faster - Obj same for both solvers:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
ex3sta1123.220040.68003.029 -6.30754033E+01 -6.30754033E+01
fit2p4.07000.99004.111 6.84642933E+04 6.84642933E+04
gen246.61007.00006.659 3.29279078E+00 3.29279078E+00
gen462.610012.92004.846 2.85445947E-06 9.34175517E-06
south3130.49003.29009.267 1.81894020E+09 1.81894020E+09

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Solver IPOPT-MEHROTRA much faster - Obj of IPOPT-MEHROTRA better:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
l3017.89001.330013.451 9.52661417E-01 9.42060728E-01

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Solver IPOPT-MEHROTRA infinitely faster - Obj of IPOPT-MEHROTRA better:

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
nug15fail 2944.4900 -- 1.02403115E+03 1.04099405E+03
qap15fail 2537.0500 -- 1.01763595E+03 1.04099405E+03

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

Modelname Time (CLP) Time (IPOPT-MEHROTRA) Ratio (CLP / IPOPT-MEHROTRA) Obj (CLP) Obj (IPOPT-MEHROTRA)
bgindyinfeasible fail -- 9.53478384E+06 1.00000000E+20
goshinfeasible fail -- -1.48537878E+03 8.68230297E+16
lpl1infeasible fail -- 2.84341900E+06 1.55676132E+12
nug20fail fail -- 1.32542664E+03 NA
sgpf5y6infeasible fail -- 5.07891512E+05 NA
nug30fail fail -- 6.42929894E+02 NA
rail4284fail fail -- 1.03719438E+03 NA

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