Microsoft is pragmatic about open source: It works with open-source projects when a business need is being met. File sharing between Windows and non-Microsoft operating systems for high-performance computing scenarios meets that criterion. The company is sponsoring work at the University of Michigan's Center for Information Technology Integration to create an open-source Network File System (NFSv4.1) client that runs on Windows. Microsoft believes that NFSv4.1 is an important standard for accessing parallel file systems in the high-performance computing market, according to a prepared statement by Bob Muglia, the president of Microsoft's Server and Tools Business. The company has been making a push into the HPC computing space since it released Windows Server 2003, HPC Edition. Windows HPC Server 2008, a high-performance solution that introduced new capabilities for parallel programming and services-based integration, became available last September. That release improved Microsoft interoperability with non-Windows system infrastructures.