The Supermicro 1042G-LTF is a 1U server with a combined HTX/PCIe slot allowing for high density, highly scalable systems. The NumaConnect SMP adapter card plugs in via an HTX riser-card and enables cache coherent shared memory across all servers in the system. The NumaChip on the SMP adapter combines a high-speed, low-latency 3D torus interconnect and a cache coherent memory controller which allows creating single systems with up to 256TB of shared memory.
With the assistance of IBM and our common partner Gridcore, Numascale has built a new version of the NumaConnect SMP adapter which plugs into PCIe and cables to a pick-up module to get cache coherent HyperTransport signals via one of the processor sockets. This solution significantly increases the number of servers which can be used with NumaConnect. The IBM System x3755 M3, a four-socket server in 2U footprint, is the first non-HTX platform where the new NumaConnect SMP adapter is supported.
At ISC'11 in Hamburg, Numascale is showcasing both the Supermicro- and the IBM-based solutions. In addition, they are demonstrating live a multi-node system interconnected with NumaConnect to form a cache coherent shared-memory NUMA system. With no OS or software changes, the system runs one single OS image with the total memory shared and available to all processors.
The idea behind Numascale and their NumaConnect SMP Adapters is to provide a way to build scalable SMP systems at more affordable cluster prices using commodity components. The unique, directory-based caching architecture in the NumaChip is designed as a level 4 on-card cache memory. This helps to reduce the amount of memory transfers needed between nodes, thus effectively increasing performance and scalability.