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Mojo function

named_barrier_arrive

def named_barrier_arrive[num_threads: Int32](id: Int32 = Int32(0))

Arrives at a named synchronization barrier at the block level.

This function marks the arrival of a named synchronization barrier point using a specific barrier ID.

Notes:

• Only supported on NVIDIA GPUs.
• Maps directly to the nvvm.barrier.arrive instruction.
• Useful for fine-grained synchronization when different subsets of threads need to synchronize independently.
• The barrier ID must not exceed 16.
• All threads participating in the barrier must specify the same num_threads value.

Parameters:

• ​num_threads (Int32): The number of threads that must reach the barrier before any can proceed.

Args:

• ​id (Int32): The barrier identifier (0-16). Default is 0.