FAODEL provides a few optional services that can be launched during the bootstrap process:
Many communication services need a simple way to queue up tasks that need to happen at a later point in time (e.g., notifying clients a new object is available, implementing a timeout check, queueing communication operations to avoid deadlock). BackBurner is a generic progress thread developers can use to queue up work. BackBurner provides a fifo queue for handing off operations and can be configured to use multiple threads (each with its own work queue). The BackBurner worker thread pulls a bundle of queue operations out at a time and then processes each one in order.
BackBurner parses the Configuration object for the following settings:
| Property | Type | Default | Description |
|---|---|---|---|
| backburner.debug | boolean | false | Display debug messages |
| backburner.threads | integer | 1 | Number of worker threads to use |
FAODEL applications often need a simple way to pass initial configuration information between nodes. The MPISyncStart service examines a configuration and updates certain properties (ending with "_mpi") with runtime information.
MPISyncStart parses the Configuration object for the following settings:
| Property | Type | Default | Description |
|---|---|---|---|
| mpisyncstart.debug | boolean | false | Display debug messages |
| mpisyncstart.enable | boolean | false | Enable the service |
| dirman.root_node_mpi | Rank | -1 | Specify rank for dirman root node |
| dirman.resources_mpi<> | url node | "" | Specify resource using mpi ranks |