NAME

       OMPI_CRCP  -  Open  MPI  MCA  Checkpoint/Restart Coordination Protocol (CRCP) Framework: Overview of Open
       MPI's CRCP framework, and selected modules.  Open MPI 4.1.6

DESCRIPTION

       The CRCP Framework is used by Open MPI for the encapsulation of various  Checkpoint/Restart  Coordination
       Protocols (e.g., Coordinated, Uncoordinated, Message/Communication Induced, ...).

GENERAL PROCESS REQUIREMENTS

       In  order  for  a  process  to  use  the  Open  MPI  CRCP components it must adhear to a few programmatic
       requirements.

       First, the program must call MPI_INIT early in its execution.

       The program must call MPI_FINALIZE before termination.

       A user may initiate a checkpoint of a parallel application by  using  the  ompi-checkpoint(1)  and  ompi-
       restart(1) commands.

AVAILABLE COMPONENTS

       Open MPI currently ships with one CRCP component: coord.

       The following MCA parameters apply to all components:

       crcp_base_verbose
           Set the verbosity level for all components. Default is 0, or silent except on error.

   coord CRCP Component
       The  coord component implements a Coordinated Checkpoint/Restart Coordination Protocol similar to the one
       implemented in LAM/MPI.

       The coord component has the following MCA parameters:

       crcp_coord_priority
           The component's priority to use when selecting the most appropriate component for a run.

       crcp_coord_verbose
           Set the verbosity level for this component. Default is 0, or silent except on error.

   none CRCP Component
       The none component simply selects no CRCP component. All of the CRCP function  calls  return  immediately
       with OMPI_SUCCESS.

       This  component  is the last component to be selected by default. This means that if another component is
       available, and the none component was not explicity requested then Open MPI will attempt to activate  all
       of the available components before falling back to this component.

SEE ALSO

         ompi-checkpoint(1), ompi-restart(1), opal-checkpoint(1), opal-restart(1), orte_snapc(7), orte_filem(7),
       opal_crs(7)