From cd18ebf1e96e3f49618ebf3b3c0e91827f08393f Mon Sep 17 00:00:00 2001 From: lkcl Date: Fri, 25 Dec 2020 16:30:58 +0000 Subject: [PATCH] --- openpower/sv/overview.mdwn | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/openpower/sv/overview.mdwn b/openpower/sv/overview.mdwn index f4ade3599..da1ba712d 100644 --- a/openpower/sv/overview.mdwn +++ b/openpower/sv/overview.mdwn @@ -4,7 +4,7 @@ [[!toc]] -This document provides an overview and introduction as to why SV exists, and how it works. +This document provides an overview and introduction as to why SV (a Cray-style Vector augmentation to OpenPOWER) exists, and how it works. SIMD, the primary method for easy parallelism of the past 30 years in Computer Architectures, is [known to be harmful](https://www.sigarch.org/simd-instructions-considered-harmful/). SIMD provides a seductive simplicity that is easy to implement in hardware. Even with predication added, SIMD only becomes more and more problematic with each power of two SIMD width increase introduced through an ISA revision. The opcode proliferation, at O(N^6), inexorably spirals out of control in the ISA, detrimentally impacting the hardware, the software and the compilers. -- 2.30.2