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LEARN ABOUT DEBIAN

opal-restart

OPAL-RESTART(1) 						     Open MPI							   OPAL-RESTART(1)

NAME

       opal-restart - Restart a previously checkpointed sequential process using the Open PAL Checkpoint/Restart Service (CRS)

       Note: This should only be used by the user if the application being restarted is an OPAL-only application. If it is an Open RTE or Open MPI
       program their respective tools should be used.

SYNOPSIS

       opal-restart [ options ] <SNAPSHOT HANDLE>

Options
       opal-restart will attempt to restart a previously checkpointed squential process from the snapshot handle reference returned by opal_check-
       point.

       <SNAPSHOT HANDLE>
		 The  snapshot handle reference returned by opal_checkpoint, used to restart the process. This is required to be the last argument
		 to this command.

       -h | --help
		 Display help for this command

       --fork	 Fork off a new process, which is the restarted process. By default, the restarted process will replace opal-restart process.

       -w | --where
		 The location of the local snapshot reference.

       -s | --self
		 Restart this process using the self CRS component. This component is a special case, all other CRS components	are  automatically
		 detected.

       -v | --verbose
		 Enable verbose output for debugging.

       -gmca | --gmca <key> <value>
		 Pass global MCA parameters that are applicable to all contexts. <key> is the parameter name; <value> is the parameter value.

       -mca | --mca <key> <value>
		 Send arguments to various MCA modules.

DESCRIPTION

       opal-restart  can  be invoked multiple, non-overlapping times. This allows the user to restart a previously running sequential process. See
       opal_crs(7) for more information about the CRS framework and components.

       When using the self CRS component, the <FILENAME> argument is replaced by the name of the program to be restarted followed by any arguments
       that need to be passed to the program. For example, if under normal execution we would start our program "foo" as:

	  shell$ setenv OMPI_MCA_crs=self
	  shell$ setenv OMPI_MCA_crs_self_prefix=my_callback_prefix
	  shell$ ./foo arg1 arg2

       To restart this process, we may only need to call:

	  shell$ opal-restart --self
			      -mca crs_self_prefix my_callback_prefix 
			      ./foo arg1 arg2

       This  will  cause  the  "my_callback_prefix-restart" function to be called as soon as the program "foo" calls OPAL_INIT. You do not have to
       call your program with the same argument set as before. There for we could have just as correctly called:

	  shell$ opal-restart --self 
			      -mca crs_self_prefix my_callback_prefix 
			      ./foo arg3

       This depends upon the behavior of the program "foo".

SEE ALSO

	 opal-checkpoint(1), opal_crs(7)

1.4.5								   Feb 10, 2012 						   OPAL-RESTART(1)

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