Data communication with speculative reception of data in a data processing system
US6728909B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Oct 10, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multiprocessor or clustered system with processing elements communicatively interconnected transmits and receives data in the form of message packets. Certain of the message packets are either responding to earlier requests with the data, or are requests that the data of the packet be written at the destination. Each message packet has an initial portion that includes information about the packet, including what the data is carrying (i.e., data in response to an earlier request, or data to be written), the source and ultimate destination of the message packet. This information prevents errant data being written at the destination by determining if the source has “permission” to send such data to the destination. When a message packet carrying data is received, processing of the packet is started in parallel with continued reception of the data it carries by using the information contained in the initial portion to check the permissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.