Host fabric interface (HFI) to perform global shared memory (GSM) operations
US8484307B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2008 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Dec 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/544
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system enables global shared memory (GSM) operations across multiple nodes with a distributed EA-to-RA mapping of physical memory. Each node has a host fabric interface (HFI), which includes HFI windows that are assigned to at most one locally-executing task of a parallel job. The tasks perform parallel job execution, but map only a portion of the effective addresses (EAs) of the global address space to the local, real memory of the task's respective node. The HFI window tags all outgoing GSM operations (of the local task) with the job ID, and embeds the target node and HFI window IDs of the node at which the EA is memory mapped. The HFI window also enables processing of received GSM operations with valid EAs that are homed to the local real memory of the receiving node, while preventing processing of other received operations without a valid EA-to-RA local mapping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.