Gurobi staff often ask customers to upload files for testing, tuning, or bench-marking. This article describes how to do that.
Please export your models as MPS or REW files. REW format is MPS, but with the constraint and variable names obfuscated. If you have only LP format available, then that will suffice.
If you are exporting from Gurobi and set the parameter GURO_PAR_DUMP=1, this will make Gurobi write a set of files to the current working directory.
Please compress these using something like bzip2, zip, or gzip.
The security of your model and data is important to Gurobi. The safest way to send the zipped models or data to Gurobi is through the upload page on the Gurobi web site:
1. Go to https://www.gurobi.com
2. Login to your Gurobi account
3. Then go to this link: https://www.gurobi.com/upload-a-model/
After you have uploaded the file, please notify your Gurobi contact person that the file has been uploaded -- and provide them with the file name.
The Gurobi support team is notified when a file has been uploaded. The files are stored on a secure server. Your files will be accessible only by Gurobi support, developers, and IT staff. They have been trained to handle these files in a secure way.
If you are not sure or not able to set parameters for your model, you can use the Gurobi environment file. You simply need to create a text file named gurobi.env and put it in the current working directory for your application (directory from which you launched the process). The files contents will be a single line for each parameter. In this case it should contain only one line:
This will cause the solver to generate a set of files in the current working directory when the optimization starts.
Note that these files are overwritten by the most recent optimization run.