Publication
IEEE Micro
Paper
Evaluating infiniband performance with PCI express
Abstract
InfiniBand Host channel adapters (HCAs) with PCI Express achieve 20 to 30 percent lower latency for small messages compared with HCAS using 64-bit, 133-MHz PCI-X interfaces. PCI Express also improves performance at the MPI level, achieving a latency of 4.1 μs for small messages. It can also improve MPI collective communication and bandwidth-bound MPI application performance. © 2005 IEEE.