Resource Times:

Date / Time: 09/02/07 12:03:58


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 :1-CPLEX-0.trc
Tracefile 2 :4-IPOPT-1.trc
Solvers used : CPLEX
IPOPT
Modeltype(s)   LP
Threshold: Solver Faster 10%
Threshold: Solver Much Faster 50%
Threshold: Solver Infinitely Faster Other solver failed


Total Obj CPLEX better Obj same Obj IPOPT better
Solver CPLEX infinitely faster : 16 16 - -
Solver CPLEX much faster : 82 6 76 -
Solver CPLEX faster : 9 1 8 -
Solvers perform the same :- - - -
Solver IPOPT faster : 2 - 2 -
Solver IPOPT much faster : 3 - 2 1
Solver IPOPT infinitely faster :- - - -
Both solvers failed to solve optimally : 6 - 6 -
Total models: : 11823941




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 CPLEX infinitely faster - Obj of CPLEX better:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
pds-060.2700fail -- 2.77610376E+10 1.64219107E+10
pds-100.6100fail -- 2.67270950E+10 1.00678044E+10
fome217.9700fail -- 4.73463189E+10 4.73516894E+10
nsct10.4400fail -- -3.89224360E+07 -2.25467780E+07
pds-307.4100fail -- 2.13854457E+10 2.13904613E+10
pds-4011.7000fail -- 1.88551988E+10 1.89622609E+10
pds-5018.2200fail -- 1.66035257E+10 NA
pds-6025.6600fail -- 1.42659044E+10 NA
watson_114.3400fail -- -1.60928080E+03 NA
dbir10.8100fail -- -8.10670700E+06 -8.10696689E+06
pds-10056.0300fail -- 1.09282300E+10 7.82268026E+08
pds-7034.4800fail -- 1.22411628E+10 NA
pds-8044.8600fail -- 1.14690775E+10 NA
pds-9054.9600fail -- 1.10875616E+10 NA
rail42842681.7200fail -- 1.05405449E+03 NA
self3.8700fail -- 0.00000000E+00 NA

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Solver CPLEX much faster - Obj of CPLEX better:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
fome110.1500171.36000.001 0.00000000E+00 2.57121340E-03
fome120.3200347.73000.001 0.00000000E+00 5.14242656E-03
lpl30.98003706.65000.000 2.73180000E+04 3.45306786E+04
model110.46002.02000.228 0.00000000E+00 1.68670562E-04
fome130.6600738.40000.001 0.00000000E+00 1.02848534E-02
rail2586929.88003607.58000.258 9.35921821E+02 6.55733663E+03

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Solver CPLEX much faster - Obj same for both solvers:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
aa011.54004.65000.331 5.55354364E+04 5.55354364E+04
aa031.00003.26000.307 4.96163636E+04 4.96163636E+04
air020.06001.59000.038 7.64000000E+03 7.64000000E+03
air061.02003.26000.313 4.96163636E+04 4.96163636E+04
baxter0.850040.19000.021 5.60072557E+07 5.60072557E+07
car40.41001.23000.333 3.54603702E+01 3.54603861E+01
cari0.06006.23000.010 5.81893058E+02 5.81893058E+02
co51.37005.32000.258 7.14469554E+05 7.14469581E+05
co96.670023.06000.289 9.46920430E+05 9.46920496E+05
cq51.20004.18000.287 4.00133807E+05 4.00133809E+05
cq94.380019.87000.220 5.05541710E+05 5.05541710E+05
crew10.20000.64000.313 2.05555556E+01 2.05555558E+01
fit2d0.42004.91000.086 -6.84642933E+04 -6.84642932E+04
gen10.13004.61000.028 6.62136997E-10 1.64521588E-06
gen40.810012.92000.063 0.00000000E+00 9.34175517E-06
jendrec10.95003.26000.291 7.02846051E+03 7.02846052E+03
ken-110.27003.29000.082 -6.97238226E+09 -6.97238226E+09
ken-130.78006.96000.112 -1.02573948E+10 -1.02573948E+10
lp2217.4800102.86000.170 4.58944594E+02 4.58944651E+02
maros-r71.390010.26000.135 1.49718517E+06 1.49718517E+06
mod22.76001184.66000.002 2.77373714E+07 2.77373714E+07
model107.0000209.00000.033 -1.54599621E+05 -1.54599621E+05
model51.86007.49000.248 -8.58440729E+05 -8.58440713E+05
model72.810032.91000.085 4.93800855E+04 4.93800855E+04
model90.720061.89000.012 -1.41123094E+05 -1.41123093E+05
nsir10.090024.20000.004 -2.89090330E+07 -2.89090330E+07
nsir20.25007.92000.032 -2.71755935E+07 -2.71755935E+07
nug151349.77002944.49000.458 1.04099404E+03 1.04099405E+03
osa-070.180018.63000.010 5.35722517E+05 5.35722517E+05
p0100.52003.65000.142 1.11504792E+06 1.11504792E+06
p050.24001.55000.155 5.56000277E+05 5.56000277E+05
pcb30000.48001.71000.281 1.37416420E+05 1.37416431E+05
r050.21007.62000.028 5.57831859E+05 5.57831859E+05
rat10.300014.94000.020 1.99953166E+06 1.99953166E+06
rat50.900013.42000.067 3.08370701E+06 3.08370701E+06
scfxm1-2b-641.63004.11000.397 2.87756386E+03 2.87756386E+03
scfxm1-2r-961.16008.03000.144 2.89170611E+03 2.89170611E+03
scrs8-2r-5120.1400126.96000.001 1.07409934E+03 1.07409934E+03
scsd8-2b-640.26000.99000.263 1.59986680E+01 1.59986681E+01
scsd8-2c-640.24001.01000.238 1.49992320E+01 1.49992320E+01
scsd8-2r-1080.11000.56000.196 2.36999945E+01 2.36999944E+01
scsd8-2r-2160.22001.26000.175 2.33999839E+01 2.33999841E+01
sctap1-2b-640.30002.07000.145 4.84560000E+02 4.84560000E+02
slptsk0.810011.16000.073 2.98953660E+01 2.98953660E+01
stocfor30.68002.28000.298 -3.99767839E+04 -3.99767839E+04
testbig0.24001.18000.203 -6.04229607E+01 -6.04229606E+01
ulevimin11.870068.97000.172 -5.19110186E+09 -5.19110186E+09
wood1p0.05002.04000.025 1.44290241E+00 1.44290249E+00
world2.7900317.49000.009 4.03648731E+07 4.03648731E+07
bas1lp3.200039.31000.081 3.63000000E+02 3.63000000E+02
cre-b1.80003644.36000.000 2.31296399E+07 2.31296399E+07
cre-d1.08002394.95000.000 2.44549698E+07 2.44549698E+07
fome203.08003468.35000.001 2.38216586E+10 2.38216586E+10
ken-185.1400307.29000.017 -5.22170253E+10 -5.22170253E+10
kl020.270011.01000.025 2.15250000E+02 2.15250000E+02
nemsemm20.46005.86000.078 5.81079571E+05 5.81079644E+05
nsct20.8300749.41000.001 -3.71750820E+07 -3.71750820E+07
osa-140.500087.08000.006 1.10646284E+06 1.10646284E+06
osa-301.0500321.45000.003 2.14213987E+06 2.14213987E+06
pds-203.08003497.04000.001 2.38216586E+10 2.38216586E+10
rail5075.960023.17000.257 1.72145567E+02 1.72145567E+02
rail5162.520019.73000.128 1.82000000E+02 1.82000001E+02
rail5823.420031.64000.108 2.09712233E+02 2.09712233E+02
rat7a6.540038.35000.171 2.07437142E+06 2.07437142E+06
rlfddd0.320012.30000.026 -1.30000000E+01 -1.29999999E+01
rlfdual5.340056.70000.094 -1.00000000E+00 -9.99999942E-01
rlfprim0.740081.78000.009 1.00000000E+00 1.00000069E+00
route0.32009.62000.033 5.94165028E+03 5.94165028E+03
scsd8-2r-4320.47002.95000.159 2.57999696E+01 2.57999725E+01
sctap1-2r-4800.88004.82000.183 2.48500000E+02 2.48500000E+02
us040.310017.68000.018 1.77316667E+04 1.77316667E+04
dbic166.50001592.51000.042 -9.76897300E+06 -9.76897300E+06
dbir21.2800229.40000.006 -6.11691650E+06 -6.11691650E+06
nemsemm11.040044.46000.023 5.12959601E+05 5.12959684E+05
nw141.0100351.46000.003 6.18440000E+04 6.18440000E+04
osa-602.40002070.47000.001 4.04407250E+06 4.04407250E+06

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Solver CPLEX faster - Obj of CPLEX better:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
pilot878.070013.87000.582 3.01710359E+02 3.01715799E+02

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Solver CPLEX faster - Obj same for both solvers:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
ex3sta121.220040.68000.522 -6.30754033E+01 -6.30754033E+01
nemspmm22.32003.36000.690 -2.91794836E+05 -2.91794828E+05
nemswrld23.390036.76000.636 2.60308966E+02 2.60309063E+02
qap151318.53002537.05000.520 1.04099404E+03 1.04099405E+03
rosen100.40000.78000.513 -1.74215456E+05 -1.74215456E+05
scfxm1-2r-640.82001.62000.506 2.87756386E+03 2.87756386E+03
scfxm1-2r-2566.660011.15000.597 2.89170611E+03 2.89170611E+03
t0331-4l13.840023.01000.601 2.97300334E+04 2.97300334E+04

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Solver IPOPT faster - Obj same for both solvers:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
gen28.92007.00001.274 3.29279078E+00 3.29279078E+00
nemspmm12.44002.04001.196 -3.27415836E+05 -3.27415836E+05

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Solver IPOPT much faster - Obj same for both solvers:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
fit2p2.20000.99002.222 6.84642933E+04 6.84642933E+04
south3139.11003.290011.888 1.81894020E+09 1.81894020E+09

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Solver IPOPT much faster - Obj of IPOPT better:

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
l3011.99001.33009.015 9.52661331E-01 9.42060728E-01

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

Modelname Time (CPLEX) Time (IPOPT) Ratio (CPLEX / IPOPT) Obj (CPLEX) Obj (IPOPT)
bgindyinfeasible fail -- 6.14604248E+04 1.00000000E+20
goshinfeasible fail -- 5.76638122E+01 8.68230297E+16
lpl1infeasible fail -- 3.62181023E+02 1.55676132E+12
nug20fail fail -- 1.21494160E+09 NA
sgpf5y6infeasible fail -- 1.20307285E+10 NA
nug30fail fail -- 9.45906494E+00 NA

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