IntelĀ® MPI Library Reference Manual for Linux* OS
<switch> |
Checkpoint switch |
enable | yes | on | 1 |
Enables the check point function for the application started |
disable | no | off | 0 |
Disables the check point function for the application started. This is the default value |
Use this option to enable/disable checkpoints capability. When this capability is disabled, other checkpoint options are ignored.
<sec> |
Interval between consecutive checkpoints in seconds |
Use this option to turn on timer driven checkpoints. See also Timer Driven Checkpoint. The checkpoints are taken every <sec> seconds. If this option is not specified, signal driven checkpoint function may be used. See Explicit Signal Driven Checkpoint for more details.
<N> |
Maximal number of checkpoint images kept. The default value is 1 |
Use this option while running the checkpoint function to keep last <N> checkpoints to reduce checkpoint image space. By default, only the last checkpoint is kept.
Use this option to restart an application from one of the stored checkpoints. -ckpointlib, -ckpoint-prefix and -ckpoint-num options are meaningful for restarting. The executable name may be provided to the process manager, but is ignored. Taking checkpoints is allowed for the restarted application, so -restart option may be accompanied with -ckpoint and other applicable checkpoint options.
<N> |
Identifier of the checkpoint image to restart an application with. Valid values are any number equal or lower than the last checkpoint number. The default is the last checkpoint number. |
Use this option while restarting an application. The checkpoint number <N> (counting from 0) is taken as a restart point. To determine the best choice for this value, examine the checkpoint storage directory setting with the -ckpoint-prefix option.
The number of images determined by the -ckpoint-preserve option is kept at maximum.
The application will abort with an error message during startup if this checkpoint does not exist. By default, the last checkpoint is selected.