New Platforms

• New Operating Systems: Microsoft Windows Vista and Microsoft Windows 7 are now supported.

Bug Fixes

• x86_64 Fortran Bindings: solved bug that could lead to MPI objects exhaustion.

Bug Fixes

• TCP Device: solved bugs that affected performance

New Features

• Full abortion clean-up: Abortion of a computation leaves no process behind, no matter when the abortion takes place.
• Improved error reporting: Error reporting was enhanced with more detailed and precise messages making configuration problem solving easier and less painfull.
• Easier configuration: support for new XML configuration file adds flexibility while keeping easy to maintain complex configurations.
• More configuration options: Map multiple network drives, define multiple environment variables, set processes working directory whether by starting computation from executable (direct run) or from mpiexec.
• Enhanced csWMPI II Service: Improved to overcome the limitations of the csWMPI II Service compared to the csWMPI II Daemon (Windows only).

New Platforms

• New Operating Systems: Linux Kernel 2.6.x is now supported on all architectures.
• New Architecture: Added support for Intel Itanium2 architectures.

New Features

• MPICH compatibility added. Compile, link and run applications written for MPICH on csWMPI II (Linux only).
• Profiling interface added. Profiling interface and VampirTrace compatibility added.
• Easier debugging. csWMPI II applications can be debugged with the Distributed Debugging Tool (DDT) from Streamline Computing.

Improved performance

• tcp Device: Improved performance of tcp device in Windows and Linux systems, as well as Gigabit Ethernet.
• CPU Usage: Reduced CPU usage in csWMPI II while communication is in progress, leaving more cycles free for your application to crunch numbers.

New Platforms

• New Architectures: Support for 64-bit extended systems (AMD64)
• New Operating Systems: Support for MS Windows and Linux for all system architectures

New Features

• Enhanced TCP performance in MS Windows: TCP device was redesigned and now it uses non-blocking overlapped IO to send and receive data. For some configurations this greatly enhances the performance.
• Heterogeneous cluster: Ready to run computations across MS Windows and Linux nodes.

Bug Fixes

• csWMPI II Setup for MS Windows: Solved a bug that could prevent access to remote machines during installation.

Third-party benchmarks and tools

• A number of third-party benchmarks have now been prepared to run with csWMPI II out-of-the-box. Please see the section on Third-party benchmarks for instructions on how to download and run the benchmarks.

Bug Fixes

• Windows NT 4.0 Support: solved problem in using a Windows 2000 system function
• C++ examples: solved link problem in C++ examples
• TCP Device: solved problem that could cause hangs in the middle of computations
• mpiexec: solved a bug that could cause an invalid memory access at startup

Bug Fixes

• Process Creation: solved bug shown when creating more than 64 processes.
• TCP Device: solved bugs that affected performance

New Features
csWMPI II, version 2.1.0, now offers enhanced performance, easy-to-use configuration and support to an increased number of compilers and languages:

• Enhanced Performance: TCP device was improved to increase performance in message exchanging.
• C++ Bindings: Supporting Visual C++ 6.0 and 7.0.
• Fortran Bindings: Supporting Compaq Visual Fortran, Lahey/Fujitsu Fortran and Absoft Pro Fortran.
• Easier-to-use Cluster Configuration: Cluster configuration has been simplified, while maintaining the known flexibility.

Bug Fixes

• License Service: solved a crash on some machines.
• Installation Process: solved limitations on standalone machines installation.

New Features
csWMPI II offers a rich set of new features from the MPI-2 standard compared to previous releases of csWMPI II. Among the most prominent new features are:

• Process Creation and Management: Create processes dynamically and join independent computations at runtime.
• One-sided Communication: Remote memory access supporting three different synchronization models.
• Parallel IO: Create, read, and write files collectively over a group of processes.

Changes
The licensing model has been modified. csWMPI II is leased for a number of CPUs and no longer for a number of processes. Please refer to License section for the complete license agreement.