2021夏季Linux Format UK杂志：开源教程与最新技术

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《Linux Format UK》第279期夏季版杂志，专注于开源技术，提供了丰富的实用教程和特色内容。本期主题包括： 1. **现代文档网站构建**：介绍如何利用开源工具构建一个功能强大的现代文档分享平台，确保用户能够轻松创建、编辑和共享安全的文档。 2. **SecureCode教程**：关注网络安全，提供关于如何在Web应用开发中集成安全机制，以保护用户数据和隐私的技术指导。 3. **处理器监控与压力测试**：学习如何有效地监测和测试处理器性能，帮助用户优化系统资源的使用。 4. **电路设计入门**：对于对电子工程感兴趣的人，这里有开始设计和组装电路的基础教程，引导读者踏入硬件世界的门槛。 5. **最佳新图像查看器和编辑器推荐**：介绍最新的开源图像处理软件，满足不同用户的图像处理需求。 6. **免费下载**：提供RescueKit，一个备份和恢复工具，帮助用户保护数据免受丢失或损坏。 7. **高效的办公套件**：比较和评测了LibreOffice 7.1、OnlyOffice 6.2和WPSOffice等开源办公软件，提升工作效率。 8. **获取更好的VPNs**：讨论如何选择适合的开源虚拟私人网络服务，确保在线隐私和安全。 9. **Pi HQ相机**：专为Raspberry Pi用户设计的高级摄像头功能，提升微型计算机的摄影能力。 10. **VirtualBox网络设置**：讲解如何在VirtualBox中配置网络连接，以支持云计算和虚拟化环境中的网络需求。 11. **开源直播软件OBS Studio**：作为本期亮点，OBS Studio作为全球领先的开源直播软件，其开源背景和在YouTube、Twitch等平台的应用得到了详细介绍。 12. **Raspberry Pi直播与流媒体**：教授如何使用Raspberry Pi进行直播，覆盖Twitch和YouTube等平台的实操指南。 13. **LXF夏季特辑**：Linux Format杂志的夏季特别版，封面故事可能围绕着上述某一方面展开深度探讨。订阅并保存，您将获得更全面的数字和纸质版本内容，同时还能了解团队成员和他们的联系方式，以及更多有关Linux技术和相关行业的动态。《Linux Format UK》第279期提供了一个综合性的平台，让读者能够深入理解和实践开源技术。

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LXF279

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GPU:

GA104

Lithography:

Samsung 8nm

Die size:

392.5mm2

Transistors:

17.4 billion

CUDA cores:

6,144

SMs:

RT cores:

Tensor cores:

192

Boost clock:

1,770MHz

Memory:

8GB

GDDR6X

Memory bus:

256-bit

Memory speed:

19Gbps

Memory

bandwidth:

608GB/s

TFLOPS:

21.75

TBP:

290W

Interface:

PCIe 4.0

Power:

12-pin

SPECS

VERDICT

so by some margin.The RTX 3070 comes with a TDP of

220W while the RTX 3070 Ti demands 290W.

Generally, 4K gaming enjoys memory bandwidth, and

comparatively the RTX 3070 Ti has that in swathes

compared to the RTX 3070. It’s a card more naturally

inclined to the demanding Ultra HD resolution, but

importantly it’s also able to offer a little more bandwidth

than the RX 6800: 608GB/s to its competitor’s

512GB/s. This translates into better 4K gaming

performance across the board versus the AMD RX

6800, though using a good bit more power to do so.

Reducing the resolution to 1440p tends to eliminate

the advantage the 3070 Ti has with its superior memory

bandwidth and sees the RX 6800 draw level in

performance terms. Reducing this further to 1080p

gives the AMD card a full advantage again.

The RTX 3070 Ti is the result of pushing the GA104

silicon to its limit. Power demands are high, despite a

not altogether massive improvement in clock speed or

CUDA Core count. Despite a solid 1440p and relaxed 4K

result, you might want to pick up the cheaper, cooler

and only slightly slower Nvidia RTX3070 instead.

here’s a hole in the

GeForce line-up and the

new GeForce RTX 3070

Ti is the card with which Nvidia

hopes to plug it up. Prior to the

RTX 3070 Ti’s release it was a

space wholly occupied by AMD’s

Radeon RX 6800, which is

perhaps why Nvidia sees it a vital

gap to fill as quickly as possible. It

aims to do so with a blend of the

RTX 3070’s full GPU and the RTX

3080’s speedy memory,all

combined in one card, which will

deliver high frame-rate 1440p and

more “affordable”4K gaming.

First off, there’s the GA104

GPU. The RTX 3070 Ti uses the

complete, uncut GPU only

currently found within the mobile RTX 3080. It’s

confusing. Nonetheless, what will be key to desktop PC

gamers is that this is a slightly more performant version

of the GA104 GPU. It achieves this extra power with a

moderate CUDA Core increase: 6,144 on the RTX 3070

Ti to the 5,888 on the RTX 3070. You can also expect

boost clocks to officially top 1,770MHz with the RTX

3070 Ti, which is a little higher than the 1,725MHz found

on the RTX 3070 Founders Edition.

Passing on any significant shake-up in the GPU

silicon, Nvidia has instead seen fit to equip the RTX

3070 Ti with GDDR6X memory. This sees the RTX 3070

Ti arrive with 608GB/s, a notable improvement on the

RTX 3070’s 448GB/s, despite both featuring an

identical 256-bit wide memory bus.

GDDR6X’s secret is PAM4 signalling, which

effectively doubles the number of signals the memory

transmits with each clock. It’s not quite doubly effective

in practice, but it has enabled its manufacturer, Micron,

to deliver 19Gbps with GDDR6X, while GDDR6 manages

just 14Gbps.

Two sides to every story

Nvidia has opted for a new Founders Edition shroud with

the RTX 3070 Ti, that has made it possible for Nvidia to

mount a single fan on both sides of the card. Nvidia calls

this ‘flow-through cooling’and it’s something you’ll spot

on the RTX 3080 and above too. There are also more

heatpipes than the RTX 3070 Founders Edition, with a

total of six running through the RTX 3070 Ti.

This cooler redesign seems to be essential to the

internal overhaul. With a tougher job of keeping the RTX

3070 Ti’s components cool, the card ends up reaching

higher temperatures under load than expected: 75°C on

average across three 4K gaming runs.

It’s a given, then, that the RTX 3070 Ti consumes

more power from the PSU than the RTX3070. And does

GeForce RTX 3070 Ti

Nvidia’s latest Ti takes aim at AMD’s RX 6800, reveals

Jacob Ridley

A power-hungry card that fits between the 3070 and 3080

and does its job of competing with the Radeon RX 6800.

FEATURES

9/10

PERFORMANCE

8/10

EASE OF USE

9/10

VALUE

8/10

Rating 8/10

DEVELOPER:

Nvidia

WEB:

www.nvidia.com

PRICE:

£529

This is likely the only

sighting of a graphics card

you’ll get this summer.

REVIEWS

Linux distribution

LXF279

Summer 2021

www.linuxformat.com

Version 10 of

SME Server is a

distro for small

and medium

businesses

(SMBs) whose

development is

supported by

the non-profit

Koozali

Foundation. The

distro exists to

reduce the effort

it takes to set

up a gateway

server by hiding

the complexities

behind an easy-

to-use browser-

based graphical

interface.

Minimum:

CPU:

1.8GHz

Memory:

4GB

HDD:

20GB

Build:

64-bit

only

IN BRIEF

SPECS

VERDICT

listed in the left sidebar under various categories such

as Administration, Security and Configuration.

The distro also enables you to create backups and

can restore a previous Koozali installation.In fact, on

first boot, the distro prompts whether you wish to

restore from a backup. Considering the fact that the

latest SME release doesn’t allow for in-place upgrades,

you can rely on the server’s ability to back itself up in a

restorable format to shift to the latest release.

Once up and running, you can explore SME’s

interface to configure its features, such as the central

file-sharing ability called i-bays. This works with the

quote management functionality of the server to define

the disk space for each user inside your network.

All things considered, the main criteria for rating a

distro such as SME Server is the finesse of its graphical

environment. Unfortunately for SME, irrespective of

its list of features, its unpolished interface is a major

disappointment. In fact, considering how little the

interface has changed through the years, it appears the

distro caters more to the needs of its existing user base

rather than trying to lure new users.

oozali SME Server exists

in an interesting niche of

distros that have

successfully managed to abstract

the process of deploying a feature-

rich gateway network server behind

a point-and-click interface,

significantly streamlining the

cumbersome process.

You can use SME as an effective

gateway server that manages your

network’s connectivity to the

internet. Not just for orchestrating

the flow of network data to and from

the computers inside your network,

but also securing it in the process,

minimising the risk of intrusions.

Its developers describe SME as a

communications server that can be configured in one of

three operational modes. The first is as a gateway

server, which asks SME to take over firewall duties, and

act as the external web and mail server. Second, SME

can be used as a private gateway server, in which case

it acts as a firewall but disables all incoming traffic,

curbing the risk of intrusions. Finally, in the server-only

mode, SME only looks after the computers inside the

network,while gateway functions are performed by

another server.

The latest release is based on CentOS 7, which will

be supported by 30 June 2024, which gives enough

time for SME to decide whether it wants to move on to

CentOS Stream or to one of the other drop-in CentOS

replacements, such as Rocky Linux and Alma Linux.

One of the highlights of the release is that it finally

supports USB installs, which is surprising since USBs

have long become the de facto means of lugging images

for personal consumption. In any case, the installation

is a fairly simple affair, especially since like most server

distros, SME is designed to take over the entire disk.

Ugly duckling

Booting into a freshly minted installation will take users

through an ncurses-based configuration screen.

Besides setting up passwords, the main purpose of the

configuration is to decide one of the three operational

modes for the server, and to set up any associated

relevant settings. When used as a gateway server,

you’ll have to make sure the machine has two network

interfaces, one to connect to the local network, and the

other to the internet. Once you’ve configured the server,

you can access its administration interface from any of

the computers inside the network it is managing.

There isn’t much about the browser-based interface

to write home about. It’s functional if unappealing, and

works as it’s supposed to. All configurable elements are

Koozali SME Server 10

Mayank Sharma

has a particular fondness for point-and-click server

distributions that roll out in a jiffy and don’t eat into his leisure time.

SME should think about polishing its user interface and offer

optional paid support to challenge its more popular peers.

FEATURES

7/10

PERFORMANCE

8/10

EASE OF USE

6/10

DOCUMENTATION

8/10

Rating 7/10

DEVELOPER:

Koozali Foundation

WEB:

www.koozali.org

LICENCE:

GNU GPL

The one feature we particularly dislike is the software manager, which is functional, but has a

terrible interface that severely impacts the user experience.

剩余99页未读，继续阅读

医生的托马斯

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2021夏季Linux Format UK杂志：开源教程与最新技术

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