This appliance deploys an MPI cluster composed of bare metal instances using the MVAPICH2 library over InfiniBand.

This appliance accepts the following parameters:

• key_name: name of a key pair to enable SSH access to the instance (defaults to "default")
• reservation_id: ID of the Blazar reservation to use for launching instances
• node_count: Number of physical nodes to launch

The following outputs are provided:

• first_instance_ip: The public IP address of the first bare-metal instance. Login with the command 'ssh cc@first_instance_ip'.
• deployment_results: The private IPs and hostnames of all deployed instances

To run MPI programs, execute the following command, assuming you have compiled a program called mpi.out:

mpirun_rsh -np <nprocs> -hostfile hosts ./mpi.out

Refer to the MVAPICH2 user guide for more details on running MPI programs.

To compiling an MPI program, use a command such as this one:

mpicc -o hello_world hello_world.c