Models: 81 NLPs with at least 1000 nonlinear nonzeros from the GAMS GlobalLib

Solvers from GAMS 23.3.1:

1. COINIPOPT-1: Ipopt with MA27 as linear solver

   linear_solver ma27
   tol 1e-8
   acceptable_tol 1e-8
   constr_viol_tol 1e-4
   compl_inf_tol 1e-4
   

2. COINIPOPT-2: Ipopt with MUMPS 4.8.2 as linear solver

   linear_solver mumps
   tol 1e-8
   acceptable_tol 1e-8
   constr_viol_tol 1e-4
   compl_inf_tol 1e-4
   

3. CONOPT 3.14T

   rtredg  1e-8
   rtnwma  1e-8
   

4. MINOS 5.51

   Row tolerance         1e-8
   Optimality tolerance  1e-8
   Superbasics limit     10000
   

5. SNOPT 7.2-4

   Major feasibility tolerance 1e-8
   Major optimality tolerance  1e-8
   Superbasics limit           5000
   

Timelimit: 3600 seconds
Relative optimality and feasibility tolerance: 1e-8

Platform:

• Intel Core 2 Duo CPU T9300, 2.5 GHz, 4 GB RAM
• Linux 2.6.27.37, SuSE Linux 11.1, 64 Bit

Results

Logfiles

Note: Knitro was not included in this comparison since the Gams/Knitro link does not reformulate the objective constraint as objective function, which may be a disadvantage compared to other solver links.