Intel® oneAPI Collective Communications Library (oneCCL) Developer Guide and Reference
ID
772609
Date
3/24/2025
Public
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Group calls
void CCL_API group_start ()
group_start() starts a group call. You can use the group_start() function to initiate a group call operation which indicates that successive operations should not get blocked due to CPU synchronization.
void CCL_API group_end ()
group_end() ends a group call. The group_end() call returns when all the operations between group_start() and group_end() have been enqueued for execution, but not necessarily completed.