Support single-threaded execution in parallel searches #25
Description
Using parallel searches requires thread-safe components (objective, neighbourhood, etc.). For some applications this may not be easily or efficiently achieved, in which case the benefits of multi-threading may be lost.
Solution: add option for single-threaded execution in parallel searches. This currently applies to:
- Parallel tempering
- Basic parallel search
- Parallel VNS (see Parallel variable neighbourhood search #4)
For each of these, an option disableMultiThreading() will be provided. With this setting, all spawned sub-searches are executed on the same thread.