Software

The Cray XMT system runs an operating system which distributes a multithreaded kernel (MTK) to the compute blades and runs SuSE Linux on the service and I/O blades. This allows the compute nodes to focus on the application without being hampered by system administrative functions.  The MTK operating system is a monolithic OS that provides a global shared memory view of the system. API is based on BSD 4.4 with Cray extensions.