The NEOS Server offers SCIP for the solution of mixed-integer linear
and nonlinear programming problems in
AMPL format. Not all elements of AMPL have been implmented, yet.
SCIP is a framework for Constraint Integer Programming oriented towards the
needs of Mathematical Programming experts who want to have total control of the
solution process and access detailed information. SCIP can also be used as pure
MIP solver or as framework for branch-cut-and-price.
SCIP can be linked with a number of LP solvers and the NLP solver IPOPT. See this
benchmark for the relative performance of SCIP and a shared-memory parallel version FiberSCIP.
Source and documentation are available from the
This solver was implemented by
Hans Mittelmann and executes at
Using the NEOS Server for SCIP
The user must submit a mixed-integer programming problem in
If non-standard SCIP parameter settings are required, the user may also submit changes from this default
parameter file. Only the line(s) in which a parameter is changed from default
should be submitted such as limits/solutions = 1 if SCIP should stop when
the first feasible solution has been found.
When submitting via e-mail or XML-RPC delete empty tokens!
The administrator of SCIP reserves the right to keep and use problem
instances submitted through NEOS for testing and debugging purposes.
Enter the complete path to the AMPL model file
Enter the complete path to the AMPL data file (optional)
Enter the complete path to the AMPL command file (optional, must contain solve command)
Enter the complete path to the SCIP parameter file (optional)
SCIP parameter file:
Dry run: generate job XML instead of submitting it to NEOS
Please do not click the 'Submit to NEOS' button more than once.