Version 4.0 was a nearly platform independent version. Further developments lead to version 4.3, before Stefan Portmann moved on and ceased to develop the codes. In 2006, the Swiss National Supercomputing Centre (CSCS) restarted the project and version 5.0 was released on 21 December 2006.
A nearly universal version of 4.0 was created, followed by further enhancements that resulted in version 4.3, before Stefan Portmann departed and stopped contributing to the codes. In 2006, the Swiss National Supercomputing Centre (CSCS) reinitiated the project and version 5.0 was launched on December 21, 2006.