Methods, apparatus, and articles of manufacture to improve in-memory multiply and accumulate operations

US11949414B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Gurpreet Singh Kalsi · Bengaluru, IN
• Akshay Krishna Ramanathan · State College, US
• Kamlesh Pillai · Kanchinakote, IN
• Sreenivas Subramoney · Bengaluru, IN
• Srivatsa Rangachar Srinivasa · Hillsboro, US
• Anirud Thyagharajan · Survanagiri, IN
• Om Ji Omer · Bengaluru, IN
• Saurabh Jain · Saratoga, US

Key dates

• Filing date: Dec 22, 2020
• Grant date: Apr 2, 2024
• Expiry date: Jul 16, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03K19/1776
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Methods, apparatus, systems, and articles of manufacture are disclosed to improve in-memory multiply and accumulate operations. An example apparatus includes a first multiplexer in a subarray of memory, the first multiplexer to receive first values representative of a column of a lookup table (LUT) including entries to represent products of four-bit numbers and return second values from an intersection of a row and the column of the LUT based on a first element of a first operand; shift and adder logic in the subarray, the shift and adder logic to shift the second values based on at least one of the first element of the first operand or a first element of a second operand; and accumulation storage in the subarray, the accumulation storage to store at least the shifted second values.