The effects of Intel Hyper-Threading Technology on system performance vary according to application characteristics and the system’s configuration. This white paper describes Dell tests of Hyper-Threading Technology used in several cluster configurations, varying interconnect, and processor cache size, and provides results and recommendations. In high-performance computing (HPC) clusters, software developers often use standard message-passing systems such as Message Passing Interface (MPI) or Parallel Virtual Machine (PVM) to achieve parallelism in applications.
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