公开(公告)号：US20200225948A1

公开(公告)日：2020-07-16

申请号：US16833597

申请日：2020-03-28

申请人： Jaewoong SIM ,  Alaa ALAMELDEEN ,  Eriko NURVITADHI ,  Deborah MARR

发明人： Jaewoong SIM ,  Alaa ALAMELDEEN ,  Eriko NURVITADHI ,  Deborah MARR

IPC分类号： G06F9/30 ,  G06F9/38 ,  G06F7/485 ,  G06F7/556

摘要： An apparatus and method for compressing floating-point values. For example, one embodiment of a processor comprises: instruction fetch circuitry to fetch instructions from a memory, the instructions including floating-point instructions; execution circuitry to execute the floating-point instructions, each floating-point instruction having one or more floating-point operands, each floating-point operand comprising an exponent value and a significand value; floating-point compression circuitry to compress a plurality of the exponent values associated with a corresponding plurality of the floating-point operands, the floating-point compression circuitry comprising: base generation circuitry to evaluate the plurality of the exponent values to generate a first base value; and delta generation circuitry to determine a difference between the plurality of exponent values and the first base value and to generate a corresponding first plurality of delta values, wherein the floating-point compression circuitry is to store the first base value and the corresponding first plurality of delta values as a plurality of compressed exponent values.

公开(公告)号：US20060101206A1

公开(公告)日：2006-05-11

申请号：US11265975

申请日：2005-11-03

申请人： David Wood ,  Alaa Alameldeen

发明人： David Wood ,  Alaa Alameldeen

IPC分类号： G06F12/00

CPC分类号： G06F12/0802 ,  G06F12/0897 ,  G06F2212/401

摘要： Data in a cache is selectively compressed based on predictions as to whether the benefit of compression in reducing cache misses exceeds the cost of decompressing the compressed data. The prediction is based on an assessment of actual costs and benefits for previous instruction cycles of the same program providing dynamic and concurrent adjustment of compression to maximize the benefits of compression in a variety of applications.

摘要翻译： 基于关于压缩​​在减少高速缓存未命中的益处是否超过解压缩压缩数据的成本的预测来选择性地压缩缓存中的数据。 该预测基于对相同程序的先前指令周期的实际成本和收益的评估，提供动态和并发调整压缩以最大化各种应用中的压缩的优点。