文中的用例也都放到github仓库中,路径:https://github.com/surez-ok/riscv-rvv-doc-zh/tree/main/rvv_spec_examples,第9讲中描述了这些用例如何运行 提供已下载好的riscv-v-spec-1.0.pdf以及intrinsic 0.12.0_function 以下是正文: 2. RVV简介 RVV,即 RISC-V Vector Extension , RISC-V的向量扩展。下面...
本文主要介绍OpenBLAS的RISC-V Vector extension(v 扩展/向量扩展)两个版本:RISC-V Vector extension 0.7.1.和RISC-V Vector extension 1.0.分别在SG2042和K1上的验证。 首先是准备了一台x86_64的设备作交叉编译准备,使用gcc 13.3.0,工具链为:Xuantie-900系列工具链,具体版本将会在下方说明。 一、OpenBLAS C910...
从上述代码看,在使用 vector intrinsic 实现向量化时,需要手动从指定地址 load 数据到向量寄存器变量中,计算后,同样需要手动将向量寄存器变量中数据 store 回指定地址。相比于普通串行实现,利用 vector intrinsic 实现理论上有接近4倍的加速比,当设置 lmul = 2/4/8 或数据类型是short或者char时,可以取得更高的加速...
此外，SiFive还提供了一个名为Recode的转换软件（translation utility），它可以自动将SIMD代码（legacy SIMD code）转换为V-spec矢量指令集（V-spec vector assembly）。结语：SiFive再出新品，RISC-V CPU市场生机涌现 如今，国内外对RISC-V架构的处理器都抱有很大期待，人们希望能通过RISC-V架构逐渐抢占ARM和x86市...
riscv-v-spec Working draft of the proposed RISC-V V vector extension. Version 1.0has been frozen and at this time is undergoing public review. Version 1.0 is considered stable enough to begin developing toolchains, functional simulators, and implementations, including in upstream software projects,...
在通用计算性能上,X100的单核跑分达到7.5 SPECint2k6/GHz,Coremark达到7.7/MHz,Dhrystone达到6.5DMIPS/MHz,最多可以支持16个核同步计算。 在融合计算方面,X100也做了大量的定制优化,16核最多可提供超8TOPS@INT8的算力,并对常见的机器视觉算法、SLAM算法等做了深度优化。
The term base vector extension is used informally to describe the standard set of vector ISA components. This draft spec is intended to capture how a certain vector function will be implemented as vector instructions, but to not yet determine what set of vector instructions are mandatory for a ...
vector extensionalgorithm accelerationAs the pre-order step of convolutional neural network (CNN) computing, image preprocessing is indispensable but time-consuming. To accelerate image preprocessing, a method based on RISC-V vector extension was proposed to accelerate eleven image preprocessing algorithms ...
Min: The RISC-V vector extensions, version 0.8, are stable enough that compilers support them. Both GCC and LLVM support the existing 0.8 version of the spec. Final versions of the compilers will be available when the RISC-V Vector Extension specification has been finalized. ...
Evaluation matrix performance on qemu with RISC-V Matrix Extension(with vector length set to VLEN and matrix length set to RLEN) qemu-riscv64 -cpu rv64,x-v=true,vext_spec=v1.0,vlen=VLEN,x-matrix=on,rlen=RLEN ./matrix.elf