HP-MPI User's Guide (11th Edition)

Understanding HP-MPI
MPI options
Chapter 3132
The hpmpi.conf file search is performed in three places and each one is
parsed, which allows the last one parsed to overwrite values set by the
previous files. The three locations are:
• $MPI_ROOT/etc/hpmpi.conf
• /etc/hpmpi.conf
• $HOME/.hpmpi.conf
This feature can be used for any environment variable, and is most
useful for interconnect specifications. A collection of variables is
available which tells HP-MPI which interconnects to search for and
which libraries and modules to look for with each interconnect. These
environment variables are the primary use of hpmpi.conf.
Syntactically, single and double quotes in hpmpi.conf can be used to
create values containing spaces.
If a value containing a quote is desired, two adjacent quotes are
interpreted as a quote to be included in the value. When not contained
within quotes, spaces are interpreted as element separators in a list, and
are stored as tabs.
NOTE This explanation of the hpmpi.conf file is provided only for awareness
that this functionality is available. Making changes to the hpmpi.conf
file without contacting HP-MPI support is strongly discouraged.
Setting environment variables on Windows for CCS jobs
For Windows CCS jobs, environment variables can be set from the GUI,
or on the command line.