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 ...

Get InfiniBand Network Architecture now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.