Shared memory communication on Nehalem Architecture (10/29/09)

• Experimental Testbed: Each node of our testbed has eight cores (2.40 GHz dual quad-core) and 12 GB main memory. The CPUs based on Nehalem architecture and run in 64 bit mode. The nodes support 16x PCI Express Gen2 interfaces and are equipped with Mellanox ConnectX QDR HCAs with PCI Express interfaces. The nodes are connected using a 36 port Mellanox QDR InfiniBand switch with QSFP ports. The operating system used was RedHat Enterprise Linux Server 5.