Intel® oneAPI Collective Communications Library Developer Guide and Reference
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Barrier
event CCL_API barrier (const communicator &comm, const stream &stream, const barrier_attr &attr=default_barrier_attr, const vector_class< event > &deps={})
Barrier synchronization is performed across all ranks of the communicator and it is completed only after all the ranks in the communicator have called it.
Parameters:
comm - the communicator for which the operation will be performed
stream - a stream associated with the operation
attr - optional attributes to customize operation
deps - an optional vector of the events that the operation should depend on
Returns: ccl::event an object to track the progress of the operation
event CCL_API barrier (const communicator &comm, const barrier_attr &attr=default_barrier_attr, const vector_class< event > &deps={})
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.