Lesson 13 Date: 4/25/2018

High Performance Computing (part II: MPI)

Linux System Administration

VM cluster for MPI runs From the previous class, you should already have two VMs with a cluster master host, master, and a compute node, n01: In the exercises today, we'll do the following steps: Set passwordless SSH public/private key authentication between master and n01 Add another computational node, n02, by cloning n01. Run MPI job across three VMs: master, n01, n02.

Agenda HPC paradigms Message Passing Interface (MPI) General MPI Program Structure Point to Point Communication MPI Standard Data Types MPI Send/Receive example MPI Collective Communications Collective Communication Example Master-Slave Task Farming Computing Partial Sums Exercise: User accounts for MPI Exercise: OpenMPI installation Exercise: MPI code compilation and run in OpenMPI VM cluster for MPI Exercise: Cluster node deployment Exercise: MPI run on a cluster References Take me to the Course Website