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Version: 1.0.0b1
For the complete Mojo documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /docs/manual/basics.md).

async_copy_wait_group

async_copy_wait_group(n: Int32)

Waits for the completion of n most recently committed cp.async-groups.

This function blocks execution until the specified number of previously committed cp.async-groups have completed their memory transfers.

Notes:

  • Only supported on NVIDIA GPUs.
  • Maps to the cp.async.wait.group PTX instruction.
  • Provides fine-grained control over asynchronous transfer synchronization.
  • Can be used to implement a pipeline of asynchronous transfers.

Args:

  • ​n (Int32): The number of pending cp.async-groups to wait for. Must be > 0.
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