ILOG CPLEX 11.0 User's Manual > Continuous Optimization > Solving LPs: Simplex Optimizers > Choosing an Optimizer for Your LP Problem > Concurrent Optimizer

The concurrent optimizer launches distinct optimizers in multiple threads. When the concurrent optimizer is launched on a single-threaded platform, it calls the dual simplex optimizer. In other words, choosing the concurrent optimizer makes sense only on a multiprocessor computer where threads are enabled. For more information about the concurrent optimizer, see Parallel Optimizers, especially Concurrent Optimizer.