From the product page:
Sun HPC ClusterTools 7 is the best integrated parallel development environment available on the market today. It enables customers to run their complex, compute-intensive applications on Sun systems and clusters of Sun systems.From the release notes, the major new features of the ClusterTools 7.1 software include:
- Open source MPI (message-passing interface). Previous versions of Sun HPC ClusterTools were based on Sun MPI, Sun’s implementation of the MPI-1 and MPI-2 standards. Sun HPC ClusterTools 7.1 is based on Open MPI, an open-source MPI that is also based on the MPI-1 and MPI-2 standards. Open MPI has been extended to support Sun Grid Engine. Open MPI is delivered through Sun packages.
- uDAPL/Infiniband support. ClusterTools 7.1 supports a byte-transfer layer (BTL) capable of communicating over Infiniband networks using the uDAPL protocol.
- Improved memory pool usage, which allows the uDAPL BTL to use the same memory pool as other BTLs (including OpenIB). This improvement results in more maintainable uDAPL code, and it allows all BTLs to take advantage of improvements to the memory pool code in the future.
- Simplified system administration tasks. Open MPI needs no system-level daemons, so system administrators no longer need to monitor and maintain them.
- Support for the Allinea DDT debugger, as well as improved support for the TotalView debugger.
- Support for Intel processor-based systems running the Solaris OS as well as SPARC- and AMD-based systems.
- Improved I/O forwarding. This allows files larger than 16384 bytes to be redirected to stdin.
- Improved performance on large clusters (1000+ nodes).