Memory Regions

Definition of a Memory Region

A memory region is a collection of memory pages within the local HCA's memory. When the region is created by software (via a verb call), the caller defines a combination of local and, possibly, remote access permissions within the memory region being created:

  • Local access permission grants logic within the local CA (e.g., QPs) authority to perform the defined access types within the region.

  • Remote access permission grants QPs within a remote CA authority to perform the defined access types within the region. When a remote QP sends a request to access the local memory associated with the destination QP, the destination QP must have been granted the appropriate access rights to access local memory on ...

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