Preface

This volume contains the proceedings of the 9th International Workshop on Parallel and Distributed Methods in verifiCation (PDMC) joint with the proceedings of the 2nd International Workshop on High-performance computational systems Biology (HiBi). For the first time the PDMC and HiBi workshops were joint in a two-day event, held at the University of Twente (The Netherlands) on September 30 and October 1, 2010. The event was co-located with the 5th International Conference on Graph Transformation (ICGT 2010) and the 17th Annual SPIN Workshop on Model Checking Software (SPIN 2010). The idea of bringing together the PDMC and HiBi workshops originated in the autumn of 2009, with preliminary discussion started during HiBi 2009 and continued at PDMC 2009. Both PDMC and HiBi are concerned with as- pects related to the exploration and analysis of large and complex computer (PDMC) and biological (HiBi) systems in combination with the usage of methods and techniques that exploit state-of-the-art computing hardware.