PREFETCHING FUNCTIONALITY ON A LOGIC DIE STACKED WITH MEMORY

摘要

Prefetching functionality on a logic die stacked with memory is described herein. A device includes a logic chip stacked with a memory chip. The logic chip includes a control block, an in-stack prefetch request handler and a memory controller. The control block receives memory requests from an external source and determines availability of the requested data in the in-stack prefetch request handler. If the data is available, the control block sends the requested data to the external source. If the data is not available, the control block obtains the requested data via the memory controller. The in-stack prefetch request handler includes a prefetch controller, a prefetcher and a prefetch buffer. The prefetcher monitors the memory requests and based on observed patterns, issues additional prefetch requests to the memory controller.

主权项

1. A memory system, comprising:
at least one memory chip; at least one logic chip stacked with the at least one memory chip; the at least one logic chip including a control block that is connected to an in-stack prefetch request handler and a memory controller, wherein the control block is configured to receive memory requests from at least one device; the control block configured to determine availability of requested data in the in-stack prefetch request handler; the control block configured to send the requested data to a device upon availability in the in-stack prefetch request handler; and the control block configured to obtain the requested data from the memory controller upon non-availability of the requested data in the in-stack prefetch request handler.