Solver Square Comparison

Solver Square Comparison: Considers all models.

Date / Time: 05/15/03 15:17:05

Solver comparison utility.

Compares all solver return outcomes (for example optimal, locally optimal, infeasible, unbounded, fail) of one solver with all return outcomes of another solver. Interrupt denotes resource or iteration limit has been reached. Solver IPOPT is represented on the left (rows) and solver LOQO on top (columns). See the solver return definitions for return codes.

Models having trace data only in one trace file are listed in the "no data" column of the other.

Tracefile 1 :	`ipopt.trc`
Tracefile 2 :	`loqo.trc`
Solvers used :	`IPOPT`
	`LOQO`
Modeltype(s)	NLP

	optimal	locally optimal	feasible	infeasible	unbounded	fail	no data	total IPOPT
optimal	-	-	-	-	-	-	-	`-`
locally optimal	-	`22`	-	-	-	`5`	-	`27`
feasible	-	-	-	-	-	-	-	`-`
infeasible	-	-	-	-	-	-	-	`-`
unbounded	-	-	-	-	-	-	-	`-`
fail	-	`5`	-	`1`	-	-	-	`6`
no data	-	-	-	-	-	-	-	`-`
total LOQO	`-`	`27`	`-`	`1`	`-`	`5`	`-`	`33`

Solver return definitions:

Outcome	Model Status	Solver Status
optimal	1 or 15	1
locally optimal	2	1
feasible	16 or 17	1 or 2 or 3 or 4 or 5
infeasible	4 or 5 or 19	1
unbounded	3 or 18	1
fail	all other	all other

Solver Resource Times

Models for each solver pair outcome. Listed are the solver resource times in seconds, as well as the ratio of resource times for the two solvers if both solved optimally.
Also listed are the objective values using both solvers. The better solution found is listed in boldface. A solution is considered better, if the relative objective function difference is greater than 1.00E-05. If both solutions are less than 1e-1, we use the absolute difference.
Solver resource time ratios for a particular model are listed only if one solver has resource greater than 5.00E-02.

IPOPT: locally optimal -- LOQO: locally optimal Back to top

Modelname	IPOPT	LOQO	Ratio (IPOPT/LOQO)	Obj (IPOPT)	Obj (LOQO)
`antenna123`	`0.0000`	`0.0100`	`---`	`0.22051987`	`0.22051987`
`argauss`	`0.0000`	`0.0000`	`---`	`0.00000001`	`0.00000001`
`betting`	`0.0200`	`0.0600`	`0.333`	`-6.29973206`	`-6.29973206`
`chamb1`	`0.0100`	`0.0100`	`---`	`1.18518519`	`0.37500002`
`chamb2`	`0.0200`	`0.0100`	`---`	`1.00000000`	`1.00000000`
`dembo1b`	`0.0300`	`0.2500`	`0.120`	`3.16821463`	`3.16821462`
`dembo4c`	`0.0000`	`0.0100`	`---`	`3.95213948`	`3.95213939`
`fairing`	`0.1600`	`0.1000`	`1.600`	`0.00240678`	`0.00240674`
`gimuwri`	`0.0000`	`0.0100`	`---`	`-1.08866211`	`-1.08866211`
`girder`	`0.0100`	`0.0300`	`---`	`0.90634541`	`0.90634538`
`him23`	`0.0300`	`0.0400`	`---`	`-1735.56957966`	`-1735.56955800`
`him31`	`0.0000`	`0.0100`	`---`	`0.17722410`	`0.17722410`
`him6mod1`	`0.0700`	`0.1100`	`0.636`	`-1910.38283275`	`-1910.38283300`
`him6mod2`	`0.1100`	`0.1300`	`0.846`	`-1910.37195639`	`-1910.37195600`
`maratos`	`0.0100`	`0.0100`	`---`	`-0.99999997`	`-0.99999999`
`net1`	`0.0000`	`0.0100`	`---`	`1599.00000369`	`1599.00000300`
`noceover`	`0.0000`	`0.0100`	`---`	`-12.00000000`	`-12.00000006`
`powell`	`0.0000`	`0.0100`	`---`	`1.00000000`	`1.00000000`
`robot_a`	`16.0200`	`16.9300`	`0.946`	`1.06466037`	`1.06466032`
`sp6`	`0.0000`	`0.0200`	`---`	`-1.41421356`	`-1.41421356`
`sp7`	`0.0000`	`0.0100`	`---`	`3.50000001`	`3.49999999`
`undefexa`	`0.0100`	`0.0100`	`---`	`-3.11520312`	`-3.11520314`

IPOPT: locally optimal -- LOQO: fail Back to top

Modelname	IPOPT	LOQO	Ratio (IPOPT/LOQO)	Obj (IPOPT)	Status (LOQO)
`him20`	`0.0400`	`99999.0000`	---	`5.56580430`	`mstat(14) sstat(10)`
`luenber`	`0.0200`	`3.8800`	---	`-606.64413821`	`mstat( 7) sstat( 2)`
`robot_b`	`4.7400`	`16.1800`	---	`13.89987355`	`mstat(14) sstat( 2)`
`robot_c`	`6.5900`	`17.5200`	---	`11.31239476`	`mstat(14) sstat( 2)`
`sp1sinus`	`0.0200`	`1.3700`	---	`181.19970531`	`mstat(14) sstat( 2)`

IPOPT: fail -- LOQO: locally optimal Back to top

Modelname	IPOPT	LOQO	Ratio (IPOPT/LOQO)	Status (IPOPT)	Obj (LOQO)
`him13`	`0.0800`	`0.0300`	---	`mstat(14) sstat(10)`	`-5304680.09500000`
`nlpdegen`	`99999.0000`	`0.0100`	---	`mstat(13) sstat(13)`	`874.36940710`
`polygon`	`10.6500`	`0.4700`	---	`mstat(14) sstat(10)`	`-1.38017967`
`qpdegen`	`99999.0000`	`0.0200`	---	`mstat(13) sstat(13)`	`0.00000000`
`sp3`	`0.2200`	`0.0200`	---	`mstat(14) sstat(10)`	`5.00000000`

IPOPT: fail -- LOQO: infeasible Back to top

Modelname	IPOPT	LOQO	Ratio (IPOPT/LOQO)	Status (IPOPT)	Status (LOQO)
`chain`	`0.3500`	`0.7200`	---	`mstat(14) sstat(10)`	`mstat( 5) sstat( 1)`

IPOPT: locally optimal: Back to top

Modelname	IPOPT	Obj (IPOPT)
`antenna123`	`0.0000`	`0.22051987`
`argauss`	`0.0000`	`0.00000001`
`betting`	`0.0200`	`-6.29973206`
`chamb1`	`0.0100`	`1.18518519`
`chamb2`	`0.0200`	`1.00000000`
`dembo1b`	`0.0300`	`3.16821463`
`dembo4c`	`0.0000`	`3.95213948`
`fairing`	`0.1600`	`0.00240678`
`gimuwri`	`0.0000`	`-1.08866211`
`girder`	`0.0100`	`0.90634541`
`him20`	`0.0400`	`5.56580430`
`him23`	`0.0300`	`-1735.56957966`
`him31`	`0.0000`	`0.17722410`
`him6mod1`	`0.0700`	`-1910.38283275`
`him6mod2`	`0.1100`	`-1910.37195639`
`luenber`	`0.0200`	`-606.64413821`
`maratos`	`0.0100`	`-0.99999997`
`net1`	`0.0000`	`1599.00000369`
`noceover`	`0.0000`	`-12.00000000`
`powell`	`0.0000`	`1.00000000`
`robot_a`	`16.0200`	`1.06466037`
`robot_b`	`4.7400`	`13.89987355`
`robot_c`	`6.5900`	`11.31239476`
`sp1sinus`	`0.0200`	`181.19970531`
`sp6`	`0.0000`	`-1.41421356`
`sp7`	`0.0000`	`3.50000001`
`undefexa`	`0.0100`	`-3.11520312`

IPOPT: fail: Back to top

Modelname	IPOPT	Status (IPOPT)
`chain`	`--`	`mstat(14) sstat(10)`
`him13`	`--`	`mstat(14) sstat(10)`
`nlpdegen`	`--`	`mstat(13) sstat(13)`
`polygon`	`--`	`mstat(14) sstat(10)`
`qpdegen`	`--`	`mstat(13) sstat(13)`
`sp3`	`--`	`mstat(14) sstat(10)`

LOQO: locally optimal: Back to top

Modelname	LOQO	Obj (LOQO)
`antenna123`	`0.0100`	`0.22051987`
`argauss`	`0.0000`	`0.00000001`
`betting`	`0.0600`	`-6.29973206`
`chamb1`	`0.0100`	`0.37500002`
`chamb2`	`0.0100`	`1.00000000`
`dembo1b`	`0.2500`	`3.16821462`
`dembo4c`	`0.0100`	`3.95213939`
`fairing`	`0.1000`	`0.00240674`
`gimuwri`	`0.0100`	`-1.08866211`
`girder`	`0.0300`	`0.90634538`
`him13`	`0.0300`	`-5304680.09500000`
`him23`	`0.0400`	`-1735.56955800`
`him31`	`0.0100`	`0.17722410`
`him6mod1`	`0.1100`	`-1910.38283300`
`him6mod2`	`0.1300`	`-1910.37195600`
`maratos`	`0.0100`	`-0.99999999`
`net1`	`0.0100`	`1599.00000300`
`nlpdegen`	`0.0100`	`874.36940710`
`noceover`	`0.0100`	`-12.00000006`
`polygon`	`0.4700`	`-1.38017967`
`powell`	`0.0100`	`1.00000000`
`qpdegen`	`0.0200`	`0.00000000`
`robot_a`	`16.9300`	`1.06466032`
`sp3`	`0.0200`	`5.00000000`
`sp6`	`0.0200`	`-1.41421356`
`sp7`	`0.0100`	`3.49999999`
`undefexa`	`0.0100`	`-3.11520314`

LOQO: infeasible: Back to top

Modelname	LOQO	Status (LOQO)
`chain`	`--`	`mstat( 5) sstat( 1)`

LOQO: fail: Back to top

Modelname	LOQO	Status (LOQO)
`him20`	`--`	`mstat(14) sstat(10)`
`luenber`	`--`	`mstat( 7) sstat( 2)`
`robot_b`	`--`	`mstat(14) sstat( 2)`
`robot_c`	`--`	`mstat(14) sstat( 2)`
`sp1sinus`	`--`	`mstat(14) sstat( 2)`