Jaromił Najman
- Total activity 4292
- Last activity
- Member since
- Following 0 users
- Followed by 7 users
- Votes 11
- Subscriptions 1486
Articles
Recent activity by Jaromił Najman-
How do I pointwise multiply an array and an MVar with the matrix-friendly Python API?
It is possible to pointwise multiply an array and an MVar object:$$\begin{align} \begin{bmatrix} a_1 \\ a_2 \\ a_3 \end{bmatrix} \begin{bmatrix} x_1 \\ x_2 \\ x_3 \end{bmatrix}= \begin{bmatrix} ...
-
What are the differences between Constraint Programming and MIP?
Constraint Programming (CP) is a field of mathematical programming which focuses on finding feasible solutions subject to some given constraints. Theoretically, it is as hard as mixed integer progr...
-
How do I create and use a recording file?
Gurobi recording files enable a user to replay the exact model-building independent of the underlying hardware. This can help identify inconsistent solver behavior on a specific machine. Additional...
-
How do I divide by a variable in Gurobi?
Gurobi 12.0 onwardIn Gurobi 12.0, one can add a nonlinear constraint to set one variable equal to a nonlinear expression. This nonlinear expression can contain a variety of nonlinear operations, in...
-
How do I model multilinear terms in Gurobi?
Gurobi 12.0 onwardIn Gurobi 12.0, one can add a nonlinear constraint to set one variable equal to a nonlinear expression. This nonlinear expression can contain a variety of nonlinear operations, in...
-
How do I create a cluster of distributed workers as an academic?
Prerequisites In order to set up a cluster of distributed workers as an academic user, you must have access to a license for which distributed optimization is enabled (in the User Portal for your p...
-
How do I pass an objective bound to Gurobi?
Currently, there is no direct way to set a lower bound for a minimization objective (or an upper bound in the case of maximization) in Gurobi. While providing an objective bound may seem like a goo...
-
How do I model conditional statements in Gurobi?
This article is inspired by the Stack Exchange post How to write if else statement in Linear programming? Conditional statements such as if \(x > y\) then \(z = w_1\) else \(z = w_2\), where \(x,y,...
-
How do I resolve an "ERROR 10030: Job was rejected because the Compute Server feature is disabled"?
The error Job was rejected because the Compute Server feature is disabled on a client machine is often coupled with the information info : Compute Server Service not enabled - Distributed Worker se...
-
Error: Job queueing feature is disabled
Gurobi Instant Cloud allows you to offload optimization computations from one or more client programs onto a cluster of compute nodes. You can set a limit on the number of simultaneous jobs each co...