Windows HPC Server 2008 R2 is the big v3 release. The team has continued to increase performance while adding new features. Windows HPC Server R2 will help enable the next generation of simulations in biology, chemistry, physics, finance, weather and more. The team has made improvements in the developer tools used to create mutli-core applications with Visual Studio 2010. Secondly, the product team partnered with Intel to make sure their parallel performance tools run great in Visual Studio. They have also created a more resilient programming model for service oriented applications. With Windows HPC Server 2008 R2 there is a new asynchronous programming model that allows applications to submit millions of calls to the cluster, disconnect and collect the results later.
To Learn More please follow this link