Qualcomm incorporated (20240184700). SYSTEM FOR PREFETCHING DATA INTO A CACHE simplified abstract

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SYSTEM FOR PREFETCHING DATA INTO A CACHE

Organization Name

qualcomm incorporated

Inventor(s)

Ramkumar Srinivasan of Saratoga CA (US)

Gerard Williams of Newport Coast CA (US)

Varun Palivela of Santa Clara CA (US)

SYSTEM FOR PREFETCHING DATA INTO A CACHE - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240184700 titled 'SYSTEM FOR PREFETCHING DATA INTO A CACHE

Simplified Explanation

The abstract describes a delta prefetcher that predicts memory accesses based on the difference between previously fetched data and predictively fetched data.

  • The delta prefetcher uses memory deltas to make predictions.
  • It tracks memory deltas using fetch and delta tables.
  • The fetch table tracks memory deltas for each memory operation executed by the CPU.
  • The delta table predicts the next memory address to prefetch based on past prefetches.

Potential Applications

This technology could be applied in:

  • Computer processors
  • Data centers
  • Cloud computing environments

Problems Solved

The delta prefetcher helps in:

  • Reducing memory access latency
  • Improving overall system performance
  • Enhancing data retrieval efficiency

Benefits

The benefits of this technology include:

  • Faster data access
  • Enhanced system responsiveness
  • Optimized memory usage

Potential Commercial Applications

This technology could be commercially benefit:

  • Semiconductor companies
  • Hardware manufacturers
  • Cloud service providers

Possible Prior Art

One possible prior art for this technology could be:

  • Previous prefetching algorithms
  • Memory management techniques

Unanswered Questions

How does the delta prefetcher handle cache misses?

The abstract does not provide information on how the delta prefetcher deals with cache misses.

What impact does the delta prefetcher have on power consumption?

The abstract does not mention the power consumption implications of using the delta prefetcher.


Original Abstract Submitted

in one aspect, a delta prefetcher disclosed herein bases its predictions on both past memory accesses and predictively prefetched memory accesses. more specifically, the delta prefetcher disclosed herein bases its prediction on both the difference or “delta” between memory addresses of data previously fetched from memory and the difference or “delta” between addresses of data predictively fetched from memory. the delta prefetcher tracks the delta memory accesses by utilizing two distinctive tables. the fetch table tracks the memory deltas for each memory operation, such as a load or store instruction, that the cpu has executed. the delta table predicts the next memory address to prefetch based on the last prefetched memory accesses.