Ohio State University

Westmere | InterNode | Performance | Network-Based Computing Laboratory

Performance numbers of MVAPICH2 on Westmere Architecture (10/14/11)

  • Experimental Testbed: Each node of our testbed has eight cores (2.53 GHz dual quad-core) and 12 GB main memory. The CPUs based on Westmere architecture and run in 64 bit mode. The nodes support 16x PCI Express Gen2 interfaces and are equipped with Mellanox ConnectX-2 QDR HCAs with PCI Express interfaces. The nodes are connected using a 36 port Mellanox QDR InfiniBand switch. The operating system used was RedHat Enterprise Linux Server release 5.4 (Tikanga). The processes were bound to core 1 on both nodes.
  • MVAPICH2 currently delivers one-way latency of 1.64 microseconds for 4 bytes, unidirectional bandwidth upto 3393.56 Million Bytes/sec and bidirectional bandwidth upto 6536.53 Million Bytes/sec on the above testbed. (1 Mega Byte = 1,048,576 Bytes; 1 Million Byte = 1,000,000 Bytes)