Data Centers

Natively Supporting True One-Sided Communication in MPI on Multi-Core Systems With InfiniBand

Free registration required

Executive Summary

As high-end computing systems continue to grow in scale, the performance that applications can achieve on such large scale systems depends heavily on their ability to avoid explicitly synchronized communication with other processes in the system. Accordingly, several modern and legacy parallel programming models (such as MPI, UPC, Global Arrays) have provided many programming constructs that enable implicit communication using one-sided communication operations. While MPI is the most widely used communication model for scientific computing, the usage of one-sided communication is restricted; this is mainly owing to the inefficiencies in current MPI implementations that internally rely on synchronization between processes even during one-sided communication, thus losing the potential of such constructs.

  • Format: PDF
  • Size: 549.3 KB