HP-MPI Version 1.1 for Windows Release Note

HP-MPI V1.1 for Windows Release Note

Building and running applications

> "%MPI_ROOT%\bin\mpicc" -mpi64 hello_world.c

NOTE Specify the bitness using -mpi64 or -mpi32 for mpicc to link in the

correct libraries. Verify you are in the correct 'bitness' compiler

window. Using -mpi64 in a Visual Studio 32-bit command window

will not work.

Step 3. Run the hello_world executable file:

> "%MPI_ROOT%\bin\mpirun" -np 4 hello_world.exe

where -np 4 specifies 4 as the number of processors to run.

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 1 of 4 on banach1

Hello world! I'm 3 of 4 on banach1

Hello world! I'm 0 of 4 on banach1

Hello world! I'm 2 of 4 on banach1

Building and running multihost on Windows CCS clusters

The following is an example of basic compilation and run steps to execute hello_world.c on

a cluster with 16-way parallelism. To build and run hello_world.c on a CCS cluster:

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. Open a Visual Studio command window. (This example uses a 64-bit version, so a

Visual Studio x64 command window is opened.)

Step 3. Compile the hello_world executable file:

X:\demo> set MPI_CC=cl

X:\demo> "%MPI_ROOT%\bin\mpicc" -mpi64 ^

"%MPI_ROOT%\help\hello_world.c"

Microsoft C/C++ Optimizing Compiler Version 14.00.50727.42 for x64

hello_world.c

Microsoft Incremental Linker Version 8.00.50727.42