Resource Times:

Date / Time: 09/01/07 15:55:27


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-SBB-1.trc.convex
Tracefile 2 :3-AlphaECP-1.trc.convex
Solvers used : SBB
AlphaECP
Modeltype(s)   MINLP
Threshold: Solver Faster 10%
Threshold: Solver Much Faster 50%
Threshold: Solver Infinitely Faster Other solver failed


Total Obj SBB better Obj same Obj AlphaECP better
Solver SBB infinitely faster : 1 1 - -
Solver SBB much faster : 31 1 22 8
Solver SBB faster :- - - -
Solvers perform the same : 1 - - 1
Solver AlphaECP faster :- - - -
Solver AlphaECP much faster : 2 - - 2
Solver AlphaECP infinitely faster : 2 - - 2
Both solvers failed to solve optimally : 3 - 3 -
Total models: : 4022513




Solver return definition:

OutcomeModel StatusSolver Status
globally optimal 1 or 15 1
locally optimal/feasible 2 or 8 or 16 1 or 2 or 3 or 4 or 5




Resource Times:

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Solver SBB infinitely faster - Obj of SBB better:

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
risk2b0.3900fail -- -5.57361685E+01 1.00000000E+20

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Solver SBB much faster - Obj of SBB better:

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
stockcycle98.01003600.00000.027 1.43295165E+05 4.36419130E+05

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Solver SBB much faster - Obj same for both solvers:

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
alan0.01001.0000--- 2.92500000E+00 2.92500000E+00
batch0.23002.00000.115 2.85506508E+05 2.85506481E+05
ex12230.06003.00000.020 4.57958240E+00 4.57957678E+00
ex1223a0.01003.0000--- 4.57958240E+00 4.57957997E+00
ex1223b0.00003.0000--- 4.57958240E+00 4.57957678E+00
fac10.010083.0000--- 1.60912612E+08 1.60912612E+08
fac30.29008.00000.036 3.19823098E+07 3.19823098E+07
gbd0.00001.0000--- 2.20000000E+00 2.20000000E+00
m30.40002.00000.200 3.78000000E+01 3.78000000E+01
nvs030.02001.0000--- 1.60000000E+01 1.60000000E+01
nvs100.02002.0000--- -3.10800000E+02 -3.10800000E+02
st_e140.02002.0000--- 4.57958240E+00 4.57957678E+00
st_miqp10.03001.0000--- 2.81000000E+02 2.81000000E+02
st_miqp20.03001.0000--- 2.00000000E+00 2.00000000E+00
st_miqp30.00001.0000--- -6.00000000E+00 -6.00000000E+00
st_miqp40.00001.0000--- -4.57400000E+03 -4.57400000E+03
st_miqp50.00001.0000--- -3.33888889E+02 -3.33889031E+02
st_test50.06001.00000.060 -1.10000000E+02 -1.10000000E+02
st_test60.09001.00000.090 4.71000000E+02 4.71000000E+02
st_test80.01001.0000--- -2.96050000E+04 -2.96050000E+04
st_testph40.02001.0000--- -8.05000000E+01 -8.05000000E+01
synthes30.18004.00000.045 6.80097405E+01 6.80093274E+01

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Solver SBB much faster - Obj of AlphaECP better:

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
du-opt1.74001124.00000.002 3.56108965E+00 3.55567908E+00
du-opt520.8200453.00000.046 8.07365758E+00 8.07307759E+00
meanvarx0.02001.0000--- 1.44969830E+01 1.43690751E+01
risk2bpb0.42002.00000.210 -5.57361685E+01 -5.58761394E+01
st_testgr10.04002.0000--- -1.27281000E+01 -1.28116000E+01
st_testgr30.06001.00000.060 -2.04688000E+01 -2.05900000E+01
synthes10.03001.0000--- 6.00975891E+00 6.00965002E+00
synthes20.04005.0000--- 7.30353125E+01 7.30345496E+01

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Solvers perform the same - Obj of AlphaECP better:

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
st_e350.01000.0000--- 1.17178934E+05 1.07419804E+05

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Solver AlphaECP much faster - Obj of AlphaECP better:

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
m6196.77007.000028.110 1.29824936E+02 8.22568769E+01
m7223.460033.00006.772 1.23964378E+02 1.06756877E+02

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Solver AlphaECP infinitely faster - Obj of AlphaECP better:

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
fo7fail 504.0000 -- 0.00000000E+00 2.07291844E+01
o7fail 3606.0000 -- 0.00000000E+00 1.53819887E+02

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

Modelname Time (SBB) Time (AlphaECP) Ratio (SBB / AlphaECP) Obj (SBB) Obj (AlphaECP)
tls12fail fail -- 0.00000000E+00 1.00000000E+20
tls6fail fail -- 0.00000000E+00 1.00000000E+20
tls7fail fail -- 0.00000000E+00 1.00000000E+20

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