HP-MPI Version 1.1 for Windows Release Note

HP-MPI V1.1 for Windows Release Note

Building and running applications

Any additional runs of ANY HP-MPI application from the same node and same user

account will not require a password:

X:\demo> "%MPI_ROOT%\bin\mpirun" -hostlist n01:2,n02:2 ^

hello_world.exe

Hello world! I'm 1 of 4 on n01

Hello world! I'm 3 of 4 on n02

Hello world! I'm 0 of 4 on n01

Hello world! I'm 2 of 4 on n02

Running with a hostfile using CCS

Perform Steps 1 and 2 from “Building and running on a single host” on page 34.

Step 1. Change to a writable directory on a mapped drive. The mapped drive should be to a

shared folder for the cluster.

Step 2. Create a file "hostfile" containing the list of nodes on which to run:

n01

n02

n03

n04

Step 3. Submit the job to CCS.

X:\demo> "%MPI_ROOT%\bin\mpirun" -ccp -hostlist hostfile -np 8 ^

hello_world.exe

Nodes will be allocated in the order that they appear in the hostfile. Nodes are

scheduled cyclically, so if you have requested more ranks than there are nodes in

the hostfile, nodes will be used multiple times.

Step 4. Analyze hello_world output.

HP-MPI prints the output from running the hello_world executable in

non-deterministic order. The following is an example of the output:

Hello world! I'm 5 of 8 on n02

Hello world! I'm 0 of 8 on n01

Hello world! I'm 2 of 8 on n03

Hello world! I'm 6 of 8 on n03

Hello world! I'm 1 of 8 on n02

Hello world! I'm 3 of 8 on n04

Hello world! I'm 4 of 8 on n01

Hello world! I'm 7 of 8 on n04