International Business Machines Corporation

Dwifuzi Coe

Martin Recktenwald

Christian Jacobi

Markus Kaltenbach

Eyal Naor

Yuk Lung Chan

Yossi Shapira

Yair Fried

Michael S Wang

Gilbert Y Lee

A processor(s) performs a cache access to retrieve data, wherein the cache access by initiating a request that includes an address of a first address type. The cache access includes the processor(s) generating, based on historical data related to the address, a prediction for a location of the data in the cache that is a set identifier of a predicted cache set. The processor(s) concurrently perform a data access to the cache to retrieve sets in the cache. The processor(s) confirm(s) that the retrieved include the predicted cache set. The processor(s) utilize(s) the set identifier to select data from the predicted set.

Minimizing cache latencies using set predictors

A memory access control includes a tracker configured to receive cache invalidate (XI) commands from the memory controller and to provide responses to the memory controller and an address storage element in the tracker that stores an address to be locked by one of the processing units. The system also includes a lock required, a cache invalidate (XI) tracker bit, a set input that upon receipt of a set command sets the lock required bit when a first condition is met, a first reset input that resets the lock required bit upon receipt of a reset command; and a second reset input that resets the XI tracker bit. The tracker rejects incoming XI commands from the memory controller when the lock required bit is set, allows incoming XI commands when the lock bit is not set and sets the XI tracker bit when a first incoming XI command is received.

Hardware control of CPU hold of a cache line in private cache where cache invalidate bit is reset upon expiration of timer

A system and computer-implemented method for managing a plurality of display devices in a multi-display computer system that includes determining in real-time input information including face direction of a user facing the plurality of display devices, selecting a primary display device of the plurality of display devices using the input information determined, and transferring information to the primary display device as desired by the user.

Intelligent real-time display selection in a multi-display computer system

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Dwifuzi Coe