![[wl_ipc_parallelfinish.png|256]] - **Description**: The leader process is waiting for all parallel workers to finish their assigned tasks and report their final status. This synchronization utilizes shared memory queues and inter-process OS latches (e.g., condition variables or semaphores) to ensure the parallel query safely collates all results before returning. - **Operations**: - [[Gather]] - [[GatherMerge]] - **Resources**: [[CPU]], [[Memory]]