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InfiniBand Network Architecture by MindShare, Inc., Tom Shanley

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Memory Windows

Definition of a Memory Window

As described earlier, the following access control attributes can be defined for an entire region:

  • Local read access is always automatically granted.

  • Enable/disable local write access.

  • Enable/disable remote write access (requires enabling of local write access as well).

  • Enable/disable remote read access.

  • Enable/disable remote atomic operation access (requires enabling of local write access as well).

  • Enable/disable memory window binding (window binding is described in “Binding a Window To a Region” on page 310).

Assuming that multiple QPs in remote CAs will be accessing various areas of a memory region local to an HCA, it may be desirable that not all of the remote QPs have the same access rights within ...

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