Python function

enable_all_peer_access

enable_all_peer_access()

max.driver.enable_all_peer_access() → None

source

Enables peer-to-peer memory access between all available GPU pairs.

This must be called before any collective operations (allreduce, broadcast, etc.) that require direct GPU-to-GPU memory access. It is safe to call multiple times; the underlying runtime caches the result after the first successful enablement.

Raises:

RuntimeError – If P2P access cannot be enabled between any GPU pair.

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