Does using more threads make Gurobi faster?

Continuous models (LP, QP, SOCP)

When solving continuous models with the barrier algorithm (Method = 2), the matrix factorization is faster with more threads. However, more threads will not make the simplex method any faster.

Mixed-Integer Programs

For MIPs where the optimization requires a large number of nodes, more threads can improve the time to solve. For MIPs that are solved at or near the root node, more threads generally will not help much.

Further information

• Is Gurobi Optimizer deterministic?
• How does Gurobi count cores?