METHOD FOR PERFORMING RANDOM READ ACCESS TO A BLOCK OF DATA USING PARALLEL LUT READ INSTRUCTION IN VECTOR PROCESSORS

    公开(公告)号:US20240345842A1

    公开(公告)日:2024-10-17

    申请号:US18754455

    申请日:2024-06-26

    CPC classification number: G06F9/383 G06F9/30036 G06F9/3004 G06F9/30043

    Abstract: This disclosure is directed to the problem of paralleling random read access within a reasonably sized block of data for a vector SIMD processor. The invention sets up plural parallel look up tables, moves data from main memory to each plural parallel look up table and then employs a look up table read instruction to simultaneously move data from each parallel look up table to a corresponding part a vector destination register. This enables data processing by vector single instruction multiple data (SIMD) operations. This vector destination register load can be repeated if the tables store more used data. New data can be loaded into the original tables if appropriate. A level one memory is preferably partitioned as part data cache and part directly addressable memory. The look up table memory is stored in the directly addressable memory.

    STREAMING ENGINE WITH SHORT CUT START INSTRUCTIONS

    公开(公告)号:US20240296065A1

    公开(公告)日:2024-09-05

    申请号:US18661804

    申请日:2024-05-13

    Abstract: A streaming engine employed in a digital data processor specifies a fixed read only data stream recalled memory. Streams are started by one of two types of stream start instructions. A stream start ordinary instruction specifies a register storing a stream start address and a register of storing a stream definition template which specifies stream parameters. A stream start short-cut instruction specifies a register storing a stream start address and an implied stream definition template. A functional unit is responsive to a stream operand instruction to receive at least one operand from a stream head register. The stream template supports plural nested loops with short-cut start instructions limited to a single loop. The stream template supports data element promotion to larger data element size with sign extension or zero extension. A set of allowed stream short-cut start instructions includes various data sizes and promotion factors.

Patent Agency Ranking