In this latest release, DDT enables message-queue debugging for MPI - for rapid analysis of deadlock and associated communication problems via a graphical interface. It is now possible to attach to running jobs and processes, and to debug PVM applications. C++ support is also improved including support for expressions involving virtual

function invocation. An improved integrated help system and simplified installation process are among the usability enhancements in this release.

DDT was first announced at SC2002, and has since received tremendous interest from the HPC community. DDT customers include national laboratories, universities and companies throughout Europe, the US and Asia.

DDT has the industry's best debugger interface for distributed computing. The modern reconfigurable GUI provides drag-and-drop group creation allowing easy grouping of processes by task, or the troubleshooting a problematic process.

DDT provides a complete debugging solution for complex parallel programmes and supports all popular compiler vendors including: Absoft, IBM, GNU, HP, Intel, PGI, and Sun Forte. The tool has support for all MPI implementations, and all major operating systems and architectures, including IA64, AMD64, x86 and PowerPC.