Ohio State University

EM64T | InterNode | Performance | Network-Based Computing Laboratory

Performance Numbers of MVAPICH on Magny-Cours Platform (04/30/12)

  • Experimental Testbed: Each node of our testbed has 24 AMD Opteron 6174 processors running at 2.2 GHz with 512 KB L2 cache. Each node also has 32 Gigabyte memory, x8 PCI Express Gen2 interfaces and Mellanox ConnectX-2 QDR HCAs with PCI Express interfaces in multi-rail configuration. The nodes are connected using a 36 port Mellanox QDR InfiniBand switch with QSFP ports. The operating system used was Red Hat Enterprise Linux Server release 5.5 (Tikanga).
  • MVAPICH currently delivers one-way latency of 1.35 microseconds for 4 bytes, unidirectional bandwidth upto 2857.52 Million Bytes/sec and bidirectional bandwidth upto 5350.18 Million Bytes/sec on the above testbed. (1 Mega Byte = 1,048,576 Bytes; 1 Million Byte = 1,000,000 Bytes)