雪豹 - MacOSX下一代版本 10.6预览

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http://www.macx.cn/A/A.asp?B=4000&ID=614189  苹果Mac OS X雪豹服务器版预览
http://www.leopardfans.cn/redirect.php?tid=1899&goto=lastpost  Mac OS X雪豹特性和并行计算

http://www.apple.com/macosx/snowleopard/  MacOSX 10.6 home page
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A Quantum Leap.                                        Since 2001, Mac OS Xhas delivered more than a thousand innovative new features. With SnowLeopard, the next major version of the world’s most advanced operatingsystem, Mac OS X changes more than its spots, it changes focus. Takinga break from adding new features, Snow Leopard — scheduled to ship inabout a year — builds on Leopard’s enormous innovations by delivering anew generation of core software technologies that will streamline MacOS X, enhance its performance, and set new standards for quality. SnowLeopard dramatically reduces the footprint of Mac OS X, making it evenmore efficient for users, and giving them back valuable hard drivespace for their music and photos.
                                       

                               
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                                                        Microsoft Exchange Support                                                        SnowLeopard includes out-of-the-box support for Microsoft Exchange 2007built into Mail, Address Book, and iCal. Mac OS X uses the Exchange WebServices protocol to provide access to Exchange Server 2007. BecauseExchange is supported on your Mac and iPhone, you’ll be able to usethem anywhere with full access to your email, contacts, and calendar.
                                                        Multicore                                                        “GrandCentral,” a new set of technologies built into Snow Leopard, bringsunrivaled support for multicore systems to Mac OS X. More cores, notfaster clock speeds, drive performance increases in today’s processors.Grand Central takes full advantage by making all of Mac OS X multicoreaware and optimizing it for allocating tasks across multiple cores andprocessors. Grand Central also makes it much easier for developers tocreate programs that squeeze every last drop of power from multicoresystems.
                                                       

                               
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                                                        64-bit                                                        Toaccommodate the enormous amounts of memory being added to advancedhardware, Snow Leopard extends the 64-bit technology in Mac OS X tosupport breakthrough amounts of RAM — up to a theoretical 16TB, or 500times more than what is possible today. More RAM makes applications runfaster, because more of their data can be kept in the very fastphysical RAM instead of on the much slower hard disk.
                                                       

                               
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                                                        Media and Internet                                                        Usingmedia technology pioneered in OS X iPhone, Snow Leopard introducesQuickTime X, a streamlined, next-generation platform that advancesmodern media and Internet standards. QuickTime X features optimizedsupport for modern codecs and more efficient media playback, making itideal for any application that needs to play media content.
                                                        BecauseSnow Leopard delivers the fastest implementation of JavaScript to date,web applications are more responsive. Safari runs JavaScript up to 53percent faster with Snow Leopard.*
                                                        OpenCL                                                        Anotherpowerful Snow Leopard technology, OpenCL (Open Computing Language),makes it possible for developers to efficiently tap the vast gigaflopsof computing power currently locked up in the graphics processing unit(GPU). With GPUs approaching processing speeds of a trillion operationsper second, they’re capable of considerably more than just drawingpictures. OpenCL takes that power and redirects it for general-purposecomputing.

[ 本帖最后由 coredump 于 14-6-2008 19:51 编辑 ]

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FROM:http://arstechnica.com/journals/ ... d-may-be-pure-cocoa

By Jacqui Cheng  | Published: June 04, 2008 - 01:02PM CT

The next version of Mac OS X is code-named "Snow Leopard," and will indeed be Intel-only, we have learned. This info is hot on the heels of TUAW's original scoop about Mac OS X 10.6 being readied for shipment as soon as Macworld 2009 and being Intel-only.

People familiar with the situation have confirmed to us that TUAW's details are true—Snow Leopard is currently on track to come out during next January's Macworld, and it will not contain major OS changes. Instead, the release is heavily focused on performance and nailing down speed and stability. With Apple's current (and future) focus on smaller, thinner, and more mobile devices, this move makes perfect sense. Things like the MacBook Air, iPhone, iPod touch, and other mysterious devices that have yet to be announced need better performance for better battery life, and that's definitely something Apple wants to excel at in the years to come. Our sources did not note whether Apple planned to discuss Snow Leopard at this year's WWDC.

Something else that may happen is that Apple may eventually wrap everything in Cocoa—things that are currently only Carbon accessible will be no longer. This (which is reportedly not yet in stone) should make many Objective-C programmers happy, although those who are married to Carbon may get a bit bristly at the news. (Note: There may be some disagreement here as to what exactly "Cocoa-only" means, so take that into account when thinking about this. For example, Apple may only axe Carbon UI stuff.) Of course, it seems like 10.6 is all about making graybeards bristly, as PowerPC users will soon be left out in the cold too.

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  苹果星期一,在一年一度的开发者大会上,发布了服务器版的雪豹,下一代Mac OS X服务器,将会有新的技术和服务,会使商务应用更好,释放先进硬件的潜能,并为未来数年的革新,打好基础.

   多内核,64位和OpenCL

  同其普通版Mac OS X雪豹兄弟一样,新的服务器版也将支持"Grand Central"多内核技术,这一新技术将使得Mac OS X服务器版能够自动识别多内核,并真对其进行优化的任务分配.类似的,该系统还能够发挥64位内核技术的潜能,支持16TB内存,比现在支持的内存多了500倍,OpenCL能够允许任何软件使用GPU强大的浮点运算能力,而从前只有图形软件才能使用.

   iCal Server 2
   通过对于老版iCal Server的改进,雪豹服务器将会包含新版,开放标准日历和计划服务,将能使得小组范围内共享日历,推送提醒,以及向非iCal用户发出邮件邀请,网页界面则使得用户在离开苹果电脑后,依然能够通过浏览器访问日历.

   Podcast Producer 2
  同样的,PodcastProducer也迎来了第一次大改版,新特性包括工作流程编辑器,通过浏览关键贞的方式,让用户创建podcast.这包括选择视频,转场,字幕和水印重叠等特效,设定编码格式后保存到目标位置--wiki,博客,iTunes,Podcast库.

                               
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  另外,支持捕捉两个视频源,从而允许用户同时录像演讲人和投影屏幕,支持画中画功能,使得Podcasting成为演讲的理想软件.2.0将会包括新的Podcast库,允许用户把Podcast存储在本地,并且用户可以通过自动生成的Atom webfeed订购.

   协同和远程访问
  对于商业用户来说,雪豹服务器版能够提供在线团队协同,通过wiki,博客,邮件组,和RSS实现.更重要的是,苹果表示,未来的wiki和博客模板将会针对iPhone显示而优化;能够在多个wiki中检索内容;Quick Look能够查看附件内容.还推出了名为MyPage的应用,该应用给用户提供了一个方便的空间,查看网络软件,收取提醒,等等.

                               
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   同时针对商务应用,还改进了远程访问,例如推模式提示防火墙以外的手机用户,并且代理服务能够保证无线邮件,联系人,日历以及制定内部网站的安全.

   新的联系人服务器
   同时推出的一项全新特性,就是苹果首个开放标准的联系人服务器,目标就是让多台电脑间共享联系人变得简单快捷.基于CardDAV协议,使用WebDAV交换vCard,地址簿服务器允许用户或组在多台电脑间共享联系人,以及远程访问联系人信息.

   改进的邮件服务器和ZFS支持
   雪豹服务器还将增加的功能,是大幅改进的邮件服务器引擎,目的就是同时处理数千个并发请求,读写支持高性能128位加密的ZFS文件系统.

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苹果发布了Mac OS X雪豹,普通版和服务器版的介绍网页,描述了一些值得用户期待的新特性.苹果承诺雪豹将会大幅瘦身,对用户来说效率更高,并把珍贵的硬盘空间交还给用户.早期评测版本雪豹的屏摄,也显示了安装后所占硬盘空间的减小.

   纽约时代周刊指出,雪豹的另一个开发重点,就是聚焦开发多内核并行处理的潜力.Steve Jobs也说明了苹果未来的发展方向:

   "We've added over a thousand features to Mac OS X in the last fiveyears," he said Monday in an interview after his presentation. "We’regoing to hit the pause button on new features."□....□"The way theprocessor industry is going is to add more and more cores, but nobodyknows how to program those things," he said. "I mean, two, yeah; four,not really; eight, forget it."

(翻译:我们在OS X推出的7年内,开发了上千项的新特性,在星期一主题演讲之后的采访中,Jobs表示,我们暂时终止开发新特性.

   现在处理器领域正在使用越来越多的内核,不过却没有人懂得如何对多处理器进行编程.我的意思是,根本搞不清两个内核,还是四个,或许八个内核.)
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(“我们在过去的五年给OSX增加了上千项的新特性”他(Jobs)在星期一主题演讲之后的采访中表示。“我们正打算暂时终止开发新特性。”   “现在处理器产业正在使用越来越多的内核，不过却没有人懂得如何对那些(多内核)进行编程，”他解释道：“我的意思是，2个(内核)，还行，4个，不是真的吧，8个，还是算了吧。”)

   根据Jobs,苹果将采用一项名为"GrandCentral"的突破性技术,解决并行编程的难题.另外,苹果声称,他们新的OpenCL技术,远远领先于Nvidia或任何其他公司.之前曾经有传闻认为,苹果将会采用Nvidia的CUDA技术,不过实际上,苹果所做的远远不止这些,可能会更加先进.CUDA允许程序将进程交给计算机的图形处理器,GPU的计算性能是非常强大的.

   苹果重视并行计算,同英特尔即将上市的Nehalem处理器正好互相配合,该处理器拥有八个内核.苹果宣布雪豹将会在年后上市.