Yuxiang Zhang z4yx

ARM’s Scalable Vector Extensions: A Critical Look at SVE2 For Integer Workloads

Scalable Vector Extensions (SVE) is ARM’s latest SIMD extension to their instruction set, which was announced back in 2016. A follow-up SVE2 extension was announced in 2019, designed to incorporate all functionality from ARM’s current primary SIMD extension, NEON (aka ASIMD).

Despite being announced 5 years ago, there is currently no generally available CPU which supports any form of SVE (which excludes the [Fugaku supercomputer](https://www.fujitsu.com/global/about/innovation/

I wanted to build an LDAP server that queries a MySQL server to fetch users and check their passwords. It is mainly used for old software that does not work with custom OAuth2 providers. Redmine is an example of this.

ldapjs: library to start-off LDAP servers from scratch
node.js driver for mysql: to connect to a mysql server

Instructions:

Create the database and table with insert.sql

相信很多人和我一样，拿到小米路由玩了几天，感觉官方的步伐不够快不够激进。既然如此，何不自己动手丰衣足食呢？

背景知识

首先你得知道Linux的一些基本理论，比如什么是bash啊，cd、ls这些命令怎么用等等。

其次你还得知道一些编程相关的东西，因为文章专注于Node.js的编译，所以Node.js和C++的一些基本知识是要有的。

	#!/usr/bin/python3

	import asyncio
	import time
	import socket
	import argparse

	import aiohttp

	class MyConnector(aiohttp.TCPConnector):

	#!/usr/bin/env bash

	# gdrive_download
	#
	# script to download Google Drive files from command line
	# not guaranteed to work indefinitely
	# taken from Stack Overflow answer:
	# http://stackoverflow.com/a/38937732/7002068

	gURL=$1

	#!/bin/bash -e

	modprobe libcomposite

	cd /sys/kernel/config/usb_gadget/
	mkdir g && cd g

	echo 0x1d6b > idVendor # Linux Foundation
	echo 0x0104 > idProduct # Multifunction Composite Gadget
	echo 0x0100 > bcdDevice # v1.0.0

	#include <stdio.h>
	#include <unistd.h>
	#include <net/if.h>
	#include <arpa/inet.h>
	#include <linux/if_ether.h>
	#include <linux/if_tun.h>
	#include <assert.h>
	#include <memory.h>
	#include <fcntl.h>
	#include <poll.h>

	#!/bin/bash

	function load_var {
	eval $(cat ${1} <( echo -e '\nset -o posix;set\n') \| env - bash --noprofile --norc --posix \| sed 's/^/'$2'_/')
	if [ -n "$IF_IPSEC6" ]; then
	PEER_ENDPOINT=$PEER_ENDPOINT6
	SELF_ENDPOINT=$SELF_ENDPOINT6
	fi
	}

	From 9ba6f4c25c50ce80c9195c45df7fab9d1e1c8152 Mon Sep 17 00:00:00 2001
	From: "tdos.apone" <[email protected]>
	Date: Thu, 10 Dec 2015 11:03:09 -0600
	Subject: [PATCH 1/2] initial big-endian attempt

	---
	build-toolchain.sh \| 8 ++++++--
	1 file changed, 6 insertions(+), 2 deletions(-)

	diff --git a/build-toolchain.sh b/build-toolchain.sh

	import select
	import socket
	import sys

	import objc
	from PyObjCTools import AppHelper

	objc.loadBundle("CoreBluetooth", globals(),
	bundle_path=objc.pathForFramework(u'/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Frameworks/CoreBluetooth.framework'))

Yuxiang Zhang z4yx

ARM’s Scalable Vector Extensions: A Critical Look at SVE2 For Integer Workloads

背景知识

热身准备