or-tools: v9.0: Can't find Gurobi 9.5.1
What version of OR-Tools and what language are you using? Version: 9.0.9048 Language: Python
Which solver are you using (e.g. CP-SAT, Routing Solver, GLOP, BOP, Gurobi) Gurobi
What operating system (Linux, Windows, …) and version? Linux, details below:
NAME="Ubuntu"
VERSION="18.04.6 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.6 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic
What did you do? Steps to reproduce the behavior:
- Install Gurobi 9.5.1.
- Install a Gurobi license file.
- Install or-tools with
pip3 install ortools - Open up a python interactive terminal with
python3. - Import
pywraplpwithfrom ortools.linear_solver import pywraplp. - Attempt to create a solver object based on gurobi with the line
pywraplp.Solver.CreateSolver('GUROBI')
What did you expect to see Successful creation of the solver object
What did you see instead?
WARNING: Logging before InitGoogleLogging() is written to STDERR
W0127 08:05:56.613769 52491 linear_solver.cc:612] Support for GUROBI not linked in, or the license was not found.
Make sure you include information that can help us debug (full error message, model Proto).
Anything else we should know about your project / environment
About this issue
- Original URL
- State: closed
- Created 2 years ago
- Comments: 39
The goal would be not to recompile to be able to use any solver.
We did the pre-loading work for gurobi. We include SCIP by default Our solvers (glop, pdlp, cp-sat) are included by default
CPLEX is no longer developed. XPRESS integration is incomplete, and nobody is interested in upgrading it. CLP/CBC are included but unreliable (CLP is quite good though). We will drop them as soon as possible. GLPK is not competitive at all. The next in the list will be Highs. We need their help to do the integration. Laurent Perron | Operations Research | @.*** | (33) 1 42 68 53 00
Le mer. 17 août 2022 à 17:16, David Torres @.***> a écrit :