We are very excited to share with you the news of a major achievement for the Microsoft HPC program.  Running Windows HPC Server 2008 the HPC Performance Team recently completed a Top500 run on the fastest HPC cluster at National Center for Supercomputing Applications (NCSA). This specific cluster had previously established a Top500 entry at 62.7 TFlops and 70% efficiency ranking #14 on November 2007 Top500 list running Linux. NCSA offered to submit a Windows benchmark entry using the same cluster for the June 2008 Top500 list.


The HPC Performance Team worked with the NCSA staff to deploy the April CTP build of Windows HPC Server 2008 on 1184 nodes and achieved the Linpack benchmark result of 68.48 TFlops and 77.7% efficiency on 9472 cores.
This blows-away many expectations and catapults Windows HPC Server 2008 into a new realm of commodity platform supercomputing. The result places the pre-release build of HPC Server 2008 at #23 in the June 2008 Top500. Quite a substantial improvement over the November 2007 Linux entry on the same cluster.
In a separate independent benchmark activity, Aachen University deployed a 262 node Windows HPC Server 2008 cluster and achieved 18.81 TFlops with 76.5% efficiency, placing Aachen at #100 on the Top500 list.


Also, watch for a heat-map video of the NCSA Top500 benchmark run coming soon on Phil Pennington's The HPC Show.