Intel Corporation

Akshay Krishna Ramanathan

Sreenivas Subramoney

Gurpreet Singh Kalsi

Kamlesh R Pillai

Srivatsa Rangachar Srinivasa

Om Ji Omer

Anirud Thyagharajan

Saurabh Jain

Example compute-in-memory (CIM) or processor-in-memory (PIM) techniques using repurposed or dedicated static random access memory (SRAM) rows of an SRAM sub-array to store look-up-table (LUT) entries for use in a multiply and accumulate (MAC) operation.

Techniques to repurpose static random access memory rows to store a look-up-table for processor-in-memory operations

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.

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

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State College, PA, United States of America

Akshay Krishna Ramanathan