Paralell Processing in Wendelin? The developer can decide whether something is executed in parallel or synchronous. Wendelin and ERP5 use an internal activity tool called portal_activities for dispatching jobs (or in ERP5 language "activities") to a respective node in a system or a cluster. Please look at how to use parallel processing (coming soon) for a walkthrough on how activities can be launched in parallel or synchronous in Wendelin. For information beyond Wendelin please refer to How To Use CMFActivity Tool (from the ERP5 Documentation).