Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Access authorization table for multi-processor caches










Image Number 2 for United States Patent #5230070.

A multi-processor (MP) system having shared storage is provided with locking of exclusivity status and read only status in multi-processor caches. The multi-processor system includes a plurality of processors, a shared main storage and a storage control element (SCE). The storage control element includes a global access authorization table (GAAT). Locking of exclusivity status in multi-processor caches is accomplished by providing at each processor a local access authorization table (AAT) containing access status for recently used data blocks wherein the size of a data block is a multiple of cache line size. The access status of a block in the local access authorization table is checked when the block is to be accessed by a processor. Only if the access status for a block is not found in the local access authorization table is authorization to access the block requested from the storage control element.








 
 
  Recently Added Patents
Apparatus, system, and method for non-interruptively updating firmware on a redundant hardware controller
LED-array package
Processing data using information embedded in a data request
Image display device and display unit for image display device
Adding value to a rendered document
System and method for routing streaming data requests
System and method for providing definitions
  Randomly Featured Patents
Method of inspection of semiconductor memory device
Pressure regulator
Light emitting device with an incorporated optical wavelight layer
Systems, methods and computer program products for compact scheduling
Knapsack fitted with an angular damper between the back of the bag and the strap and/or belt assembly
Structure for improving low temperature copper reflow in semiconductor features
Device and method for efficient positioning of a getter
PM generating apparatus
Apparatus for and method of compressing form data
Tone determination device and method