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

Understanding HP-MPI
Signal Propagation (HP-UX and Linux only)
Chapter 3 167
Signal Propagation (HP-UX and Linux only)
HP-MPI supports the propagation of signals from mpirun to application
ranks. The mpirun executable traps the following signals and propagates
them to the ranks:
SIGINT
SIGTERM
SIGABRT
SIGALRM
SIGFPE
SIGHUP
SIGILL
SIGPIPE
SIGQUIT
SIGSEGV
SIGUSR1
SIGUSR2
SIGBUS
SIGPROF
SIGSYS
SIGTRAP
SIGURG
SIGVTALRM
SIGPOLL
SIGCONT
SIGTSTP
If prun/srun is used for launching the application, then mpirun sends the
signal to the responsible launcher and relies on the signal propagation
capabilities of the launcher to ensure that the signal is propagated to the
ranks. When using prun, SIGTTIN is also intercepted by mpirun, but is
not propagated.
When using an appfile, HP-MPI propagates these signals to remote
HP-MPI daemons (mpid) and local ranks. Each daemon propagates the
signal to the ranks it created. An exception is the treatment of SIGTSTP.
When a daemon receives a SIGTSTP signal, it propagates SIGSTOP to
the ranks it created and then raises SIGSTOP on itself. This allows all
processes related to an HP-MPI execution to be suspended and resumed
using SIGTSTP and SIGCONT.