TotalView Users Guide - CI Wiki

Debugging QSW RMS Applications
the MPI-1 Standard and much of the MPI-2 standard. More information
about LAM/MPI, including all the source code and documentation, is
available from the main LAM/MPI web site.
“LAM/MPI is not only a library that implements the mandated MPI API, but
also the LAM run-time environment: a user-level, daemon-based run-time
environment that provides many of the services required by MPI programs.
Both major components of the LAM/MPI package are designed as
component frameworks—extensible with small modules that are selectable
(and configurable) at run-time. ...
You debug a LAM/MPI program in a similar way to how you debug most MPI
programs. Use the following syntax if TotalView is in your path:
mpirun –tv args prog prog_args
As an alternative, you can invoke TotalView on mpirun:
totalview mpirun –a prog prog_args
The LAM/MPI User’s Guide discusses how to use TotalView to debug LAM/
MPI programs.
Debugging QSW RMS Applications
In many cases, you can bypass the procedure described in this section. For more information,
see “Debugging MPI Programs” on page 98.
TotalView supports automatic process acquisition on AlphaServer SC systems
and 32-bit Red Hat Linux systems that use Quadrics RMS resource
management system with the QSW switch technology.
Message queue display is only supported if you are running version 1, patch 2 or later,
of AlphaServer SC.
Starting TotalView on an RMS Job
To start a parallel job under TotalView control, use TotalView as if you were
debugging prun:
{ totalview | totalviewcli } prun –a prun-command-line
TotalView starts and shows you the machine code for RMS prun. Since
you’re not usually interested in debugging this code, use the Process > Go
command to let the program run.
CLI: dfocus p dgo
120 Chapter 6: Setting Up MPI Debugging Sessions