OMPI_CRCP - Open MPI MCA Checkpoint/Restart Coordination Protocol (CRCP)
Framework: Overview of Open MPI's CRCP framework, and selected modules. Open
The CRCP Framework is used by Open MPI for the encapsulation of various
Checkpoint/Restart Coordination Protocols (e.g., Coordinated, Uncoordinated,
Message/Communication Induced, ...).
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
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.
Open MPI currently ships with one CRCP component: coord.
The following MCA parameters apply to all components:
The coord component implements a Coordinated Checkpoint/Restart
Coordination Protocol similar to the one implemented in LAM/MPI.
- Set the verbosity level for all components. Default is 0, or silent except
The coord component has the following MCA parameters:
The none component simply selects no CRCP component. All of the CRCP
function calls return immediately with OMPI_SUCCESS.
- The component's priority to use when selecting the most appropriate
component for a run.
- Set the verbosity level for this component. Default is 0, or silent except
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.
ompi-checkpoint(1), ompi-restart(1), opal-checkpoint(1), opal-restart(1),
orte_snapc(7), orte_filem(7), opal_crs(7)