HP-MPI Version 1.0 for Windows Release Note

HP-MPI V1.0 for Windows Release Note

What’s in This Version

-jobid <job-id> This flag will schedule an HP-MPI job as a task to an existing job. It will

submit the command as a single CPU mpirun task to the existing job indicated by the

parameter job-id. This option can only be used as a command line option when using the

mpirun automatic submittal functionality.

-cpu_bind support

This option is supported in appfile, command line, and CCP modes. Syntax is:

> mpirun -cpu_bind[_mt]=[v,][option][,v] -np 4 a.out

To generate the current supported options:

> mpirun -cpu_bind=help ./a.out

For more information on -cpu_bind, refer to the mpirun(1) man page.

one-sided communication

HP-MPI supports MPI 2.0 one-sided communication functionality when the -1sided flag is

given to mpirun. One-sided communication extends the communication mechanism of

HP-MPI by allowing one process to specify all communication parameters, both for the

sending side and for the receiving side.

The best performance is achieved if an RDMA enabled interconnect, like InfiniBand is used.

With this interconnect, the memory for the one-sided windows can come from MPI_Alloc_mem

or from malloc. If TCP/IP is used, the performance will be lower, and in that case the memory

for the one-sided windows must come from MPI_Alloc_mem.

For more information on -1sided, refer to the 1sided(1) man page.

mpicc and mpif90 build scripts

For C and C++ programs, use mpicc. Refer to “C command line basics” on page 30.

For Fortran programs, use mpif90. Refer to “Fortran command line basics” on page 31.

Diagnostic library

In addition to the use of debuggers, HP-MPI provides a diagnostics library for advanced error

checking and debugging. To link with the diagnostic library, specify the -ldmpi option to the

MPI build scripts when compiling your HP-MPI application, and run your application as

intended. The diagnostic library provides message signature analysis, multiple write

detection during receives, MPI object space corruption analysis, and formatted and

unformatted message dumps.

For more information, refer to the mpidebug(1) man page.