公开(公告)号：US20150095394A1

公开(公告)日：2015-04-02

申请号：US14040370

申请日：2013-09-27

Applicant: NVIDIA CORPORATION

Inventor： Daniel FINCHELSTEIN ,  David Conrad TANNENBAUM ,  Srinivasan (Vasu) IYER

IPC: G06F7/52 ,  G06F7/50

CPC classification number: G06F7/50 ,  G06F7/5443 ,  G06F2207/3884

Abstract: One embodiment of the present invention includes a method for simplifying arithmetic operations by detecting operands with elementary values such as zero or 1.0. Computer and graphics processing systems perform a great number of multiply-add operations. In a significant portion of these operations, the values of one or more of the operands are zero or 1.0. By detecting the occurrence of these elementary values, math operations can be greatly simplified, for example by eliminating multiply operations when one multiplicand is zero or 1.0 or eliminating add operations when one addend is zero. The simplified math operations resulting from detecting elementary valued operands provide significant savings in overhead power, dynamic processing power, and cycle time.

Abstract translation: 本发明的一个实施例包括一种通过检测具有零或1.0等基本值的操作数简化算术运算的方法。 计算机和图形处理系统执行大量的多重加法操作。 在这些操作的重要部分中，一个或多个操作数的值为零或1.0。 通过检测这些基本值的出现，可以大大简化数学运算，例如通过在一个被乘数为零或1.0时消除乘法运算，或者当一个加数为零时消除加法运算。 检测基本值操作数导致的简化数学运算能够显着节省架空功耗，动态处理能力和循环时间。