Applies to:
Evolver 5.x and Up
RISKOptimizer in @RISK 5.x–7.x, Industrial Edition

How many adjustable cells and groups do Evolver and RISKOptimizer allow?

The following limits apply to commercial, academic, and student versions sold by Lumivero. Textbook versions may have lower limits.

Evolver

• Evolver Professional Edition allows up to 250 adjustable cells per model.

• Evolver Industrial Edition has no limit on the number of adjustable cells.

• Evolver does not impose any limit on the number of adjustable cell groups.

RISKOptimizer

• RISKOptimizer (included exclusively with @RISK Industrial Edition) does not limit the number of adjustable cells or groups.

Practical considerations

Although Evolver and RISKOptimizer do not impose fixed limits (beyond those noted for Evolver Professional), your computer’s RAM and other system resources can create practical limits. Optimization requires reading and writing to adjustable cells many times, so models with very large numbers of adjustable cells may run slowly or appear to stall.

Terminology note

Some authors use the term decision variables for what Evolver and RISKOptimizer call adjustable cells. If you searched for “decision variables” and arrived here, try searching again using “adjustable cells”.