Resource Times:

Date / Time: 01/28/08 11:14:04


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-GLPK2004.trc
Tracefile 2 :4-GLPK2008.trc
Solvers used : GLPK2004
GLPK2008
Modeltype(s)   LP
Threshold: Solver Faster 10%
Threshold: Solver Much Faster 50%
Threshold: Solver Infinitely Faster Other solver failed


Total Obj GLPK2004 better Obj same Obj GLPK2008 better
Solver GLPK2004 infinitely faster : 2 2 - -
Solver GLPK2004 much faster : 4 - 4 -
Solver GLPK2004 faster : 11 - 11 -
Solvers perform the same : 10 - 10 -
Solver GLPK2008 faster : 23 - 23 -
Solver GLPK2008 much faster : 24 - 24 -
Solver GLPK2008 infinitely faster : 12 - - 12
Both solvers failed to solve optimally : 34 - 34 -
Total models: : 120210612




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 GLPK2004 infinitely faster - Obj of GLPK2004 better:

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
model1120.4600fail -- 0.00000000E+00 NA
rlfdual27.8200fail -- -1.00000000E+00 NA

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Solver GLPK2004 much faster - Obj same for both solvers:

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
fome110.09000.22000.409 0.00000000E+00 0.00000000E+00
fome120.19000.67000.284 0.00000000E+00 0.00000000E+00
fome130.42002.31000.182 0.00000000E+00 0.00000000E+00
rlfddd3.8400113.34000.034 -1.30000000E+01 -1.30000000E+01

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Solver GLPK2004 faster - Obj same for both solvers:

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
aa0322.950028.04000.818 4.96163636E+04 4.96163636E+04
air020.18000.23000.783 7.64000000E+03 7.64000000E+03
air0624.290028.04000.866 4.96163636E+04 4.96163636E+04
gen265.710079.80000.823 3.29279078E+00 3.29279078E+00
p056.97008.19000.851 5.56000277E+05 5.56000277E+05
r057.78009.59000.811 5.57831859E+05 5.57831859E+05
rat14.34007.37000.589 1.99953166E+06 1.99953166E+06
rat58.250011.33000.728 3.08370701E+06 3.08370701E+06
scrs8-2r-51226.620034.34000.775 1.07409934E+03 1.07409934E+03
wood1p0.39000.44000.886 1.44290241E+00 1.44290241E+00
rat7a67.180083.31000.806 2.07437142E+06 2.07437142E+06

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Solvers perform the same - Obj same for both solvers:

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
fit2d24.320024.61000.988 -6.84642933E+04 -6.84642933E+04
lpl325.470025.60000.995 2.73180000E+04 2.73180000E+04
maros-r713.930014.05000.991 1.49718517E+06 1.49718517E+06
osa-071.38001.33001.038 5.35722517E+05 5.35722517E+05
p01035.840035.81001.001 1.11504792E+06 1.11504792E+06
pilot8739.740037.20001.068 3.01710393E+02 3.01710347E+02
osa-146.88006.82001.009 1.10646284E+06 1.10646284E+06
rail50764.120058.47001.097 1.72145567E+02 1.72145567E+02
rail58268.970065.54001.052 2.09712233E+02 2.09712233E+02
rlfprim71.110076.44000.930 1.00000000E+00 1.00000000E+00

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Solver GLPK2008 faster - Obj same for both solvers:

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
aa0123.950021.16001.132 5.55354364E+04 5.55354364E+04
co533.800017.86001.892 7.14469554E+05 7.14469554E+05
cq519.250012.49001.541 4.00133807E+05 4.00133807E+05
cq995.640059.85001.598 5.05541710E+05 5.05541710E+05
crew10.57000.49001.163 2.05555556E+01 2.05555556E+01
jendrec128.850016.42001.757 7.02846051E+03 7.02846051E+03
nemspmm118.890010.72001.762 -3.27415836E+05 -3.27415836E+05
pcb300010.27007.64001.344 1.37416420E+05 1.37416420E+05
rosen104.06003.07001.322 -1.74215456E+05 -1.74215456E+05
scsd8-2b-6499.000051.41001.926 1.59986680E+01 1.59986680E+01
scsd8-2c-6486.550056.40001.535 1.49992320E+01 1.49992320E+01
scsd8-2r-1089.63007.28001.323 2.36999943E+01 2.36999943E+01
scsd8-2r-21650.990032.45001.571 2.33999843E+01 2.33999842E+01
slptsk13.35006.88001.940 2.98953660E+01 2.98953660E+01
kl022.13001.80001.183 2.15250000E+02 2.15250000E+02
osa-3030.710025.35001.211 2.14213987E+06 2.14213987E+06
rail51630.030021.44001.401 1.82000000E+02 1.82000000E+02
t0331-4l134.7000105.84001.273 2.97300334E+04 2.97300334E+04
us043.38002.48001.363 1.77316667E+04 1.77316667E+04
nemsemm141.660022.74001.832 5.12959601E+05 5.12959601E+05
nw148.27006.15001.345 6.18440000E+04 6.18440000E+04
osa-60142.7900112.49001.269 4.04407250E+06 4.04407250E+06
self23.740019.52001.216 0.00000000E+00 0.00000000E+00

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Solver GLPK2008 much faster - Obj same for both solvers:

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
car412.02001.31009.176 3.54603702E+01 3.54603702E+01
cari0.79000.38002.079 5.81893058E+02 5.81893058E+02
ex3sta147.120012.05003.910 -6.30754033E+01 -6.30754033E+01
fit2p40.670012.04003.378 6.84642933E+04 6.84642933E+04
ken-11110.990028.09003.951 -6.97238226E+09 -6.97238226E+09
model525.74005.31004.847 -8.58440729E+05 -8.58440729E+05
model716.95007.92002.140 4.93800855E+04 4.93800855E+04
model915.43006.21002.485 -1.41123094E+05 -1.41123094E+05
nemspmm236.060012.82002.813 -2.91794836E+05 -2.91794836E+05
nsir13.83001.73002.214 -2.89090330E+07 -2.89090330E+07
nsir214.71000.980015.010 -2.71755935E+07 -2.71755935E+07
pds-0625.65009.85002.604 2.77610376E+10 2.77610376E+10
pds-10152.310042.27003.603 2.67270950E+10 2.67270950E+10
scfxm1-2r-6451.200014.85003.448 2.87756386E+03 2.87756386E+03
scfxm1-2r-96125.720043.52002.889 2.89170611E+03 2.89170611E+03
sctap1-2b-6492.700012.94007.164 4.84560000E+02 4.84560000E+02
stocfor373.430016.52004.445 -3.99767839E+04 -3.99767839E+04
testbig99.900021.60004.625 -6.04229607E+01 -6.04229607E+01
bas1lp18.85005.31003.550 3.63000000E+02 3.63000000E+02
nemsemm247.560017.59002.704 5.81079571E+05 5.81079571E+05
nsct154.440017.31003.145 -3.89224360E+07 -3.89224360E+07
nsct292.56003.710024.949 -3.71750820E+07 -3.71750820E+07
route121.610045.15002.693 5.94165028E+03 5.94165028E+03
dbir1110.800032.37003.423 -8.10670700E+06 -8.10670700E+06

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Solver GLPK2008 infinitely faster - Obj of GLPK2008 better:

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
aa3fail 0.0000 -- 0.00000000E+00 0.00000000E+00
aa4fail 0.0000 -- 0.00000000E+00 0.00000000E+00
aa5fail 0.0000 -- 0.00000000E+00 0.00000000E+00
aa6fail 0.0000 -- 0.00000000E+00 0.00000000E+00
baxterfail 53.6100 -- NA 5.60072557E+07
co9fail 103.0000 -- NA 9.46920430E+05
model10fail 40.8800 -- NA -1.54599621E+05
scfxm1-2b-64fail 76.3400 -- NA 2.87756386E+03
cre-bfail 41.9100 -- NA 2.31296399E+07
cre-dfail 26.4500 -- NA 2.44549698E+07
scsd8-2r-432fail 154.5200 -- NA 2.57999708E+01
dbir2fail 9.3500 -- NA -6.11691650E+06

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

Modelname Time (GLPK2004) Time (GLPK2008) Ratio (GLPK2004 / GLPK2008) Obj (GLPK2004) Obj (GLPK2008)
bgindyinfeasible infeasible -- 5.08900400E+06 0.00000000E+00
gen1fail fail -- NA NA
gen4fail fail -- NA NA
goshinfeasible infeasible -- 6.05657085E+02 0.00000000E+00
ken-13fail fail -- NA NA
l30fail fail -- NA NA
lp22fail fail -- NA NA
mod2fail fail -- NA NA
nemswrldfail fail -- NA NA
nug15fail fail -- NA NA
qap15fail fail -- NA NA
south31fail fail -- NA NA
uleviminfail fail -- NA NA
worldfail fail -- NA NA
fome20fail fail -- NA NA
fome21fail fail -- NA NA
ken-18fail fail -- NA NA
lpl1fail fail -- NA NA
nug20fail fail -- NA NA
pds-20fail fail -- NA NA
pds-30fail fail -- NA NA
pds-40fail fail -- NA NA
pds-50fail fail -- NA NA
pds-60fail fail -- NA NA
sgpf5y6fail infeasible -- NA -2.00000004E+03
watson_1fail fail -- NA NA
dbic1fail fail -- NA NA
nug30fail fail -- NA NA
pds-100fail fail -- NA NA
pds-70fail fail -- NA NA
pds-80fail fail -- NA NA
pds-90fail fail -- NA NA
rail2586fail fail -- NA NA
rail4284fail fail -- NA NA

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