五千年(敝帚自珍)

主题:【原创】从龙芯1千万芯片销售谈起 -- testjhy

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    • 家园 你的确不了解CPU

      大概你一位这个世界只有I和A两家作CPU吧。

      用途别的不说,现在军用的也不过是486-586的级别。龙芯能保住着一块就已经够吃了。

      另外你的比较方式很有意思阿。和性能差的就比功率,和功率大的就比性能。

      • 家园 非常负责任的说,龙芯指望军品没戏

        首先,军品的量并没有你想的那么大,特别是和平时期,

        现在为吓唬阿扁造的最多的导弹一年也就100多枚。至于飞机、舰艇造的更少,事实上没有那个知名的芯片企业能靠仅仅给军方供货就能发展起来,军品都只是一部分。

        其次,已经定型的正在生产的产品也根本不肯能临时换成用龙芯的,现在定型的型号一般是用国外的片子,至于你说的486-586的级别的实用军品,国内像西安微电子所等早就做出来了,你可以搜索一下沈绪榜院士的成果 。

        最后,在研的项目也不可能用龙芯。龙芯的性能到现在都只是传说,板级设计和操作系统谁来做呢?稳定性和可靠性更是大问题。

      • 家园 军芯的开发在西安那边

        龙芯吹的比做的多……外围电路的优化还差的远,这个才是最比拼功力和经验的……军版486到现在还是禁止向前共产国家出口的……TG全靠走私……

      • 家园 不懂这一句话有什么不对

        和性能差的就比功率,和功率大的就比性能。

        这句话很对啊。 现在的芯片发展本来就有两个方向:低功耗(笔记本、随身听等等)和高性能(工作站),算上工控、军品还有一个高可靠性。如果在两个方面都不突出,那说明在市场上的位置不好。

        在wiki上说:

        Godson

        Godson

        From Wikipedia, the free encyclopedia

        Jump to: navigation, search

        This article is about a computer processor chip. For a male godchild, see godparent.

        The Godson series, or "Dragon chip" for its origin, is an architecture of general CPUs developed at CAS (Chinese Academy of Sciences). The chief architect is Professor Weiwu Hu of ICT (Institute of Computing Technology). Type I (introduced in 2002) runs at 266 MHz, Type II is 64 bit and runs at 500 MHz (reportedly comparable in performance to the Pentium III). The Godson III is being targeted at 1 GHz, with multiple (8 to 16) cores. The instruction set is MIPS compatible, but the creators have backed away from promoting the chip as such due to threats of a lawsuit (see a Lexra history).

        In September 2006, Li Guojie, director of the Institute of Computer Technology under the CAS announced a Longxin IIE (Godson IIE) a 64-bit chip containing 47m transistors and reaching 1GHz.

        BLX IC Design Corporation, Ltd (BLX) (Beijing Longxin ?) was founded at 2002 by Institute of Computing Technology, China Academy of Sciences and Jiangsu Zhongyi Group. Based in Beijing, BLX focuses on designing advanced 32bit/64bit Godson general and embedded processor, developing software tools and reference platforms.

        In March 2006 a €100 Godson II computer design called Longmeng (Dragon Dream) was announced.

        In June 2006 at Computex'2006, Taipei YellowSheepRiver company has announced a Municator YSR-639, a mini-computer based on the 400MHz Godson 2.

        [edit] Godson 2E

        In the second half of the third quarter of 2006, China revealed the latest addition to the Godson series, the Godson 2E, which was already in early stage of manufacturing, and mass production was scheduled at the end of the year. According to developers, official tests showed that the Chinese chip can rival Intel Pentium 4 processor in performance and it was superior to the early series of the Pentium IV CPUs, but the Chinese CPU could be produced at a much lower cost.

        Unlike processors from Intel, Advanced Micro Devices or Via Technologies, the Godson-2E is not based on the x86 instruction set. Instead, the chip uses a modified version of the MIPS instruction set that replaces proprietary instructions with ones developed by ICT. This means the Godson 2E cannot be used in PCs running Microsoft's Windows XP operating system, and thus the computing devices based on the Godson 2E would be most likely running the Linux operating system.

        The processor runs at clock speed of 1 GHz and like other chips in the Godson family, the Godson 2E was designed by the Chinese Academy of Science's Institute of Computing Technology (ICT) and was the first Chinese CPU produced using 90-nanometer process technology. Earlier versions of the Godson 2 chip were produced using a 180-nanometer process and ran at clock speeds up to 500MHz. Godson 2E CPU contains 47 million transistors, more than the 40 million of the Pentium IV. But this processing power will not be a drain on laptop batteries, as power consumption is between 3 to 8 watts, according to academician Mr. Li Guojie (李国杰), director of the institute. Mr. Li Guojie (李国杰) also announced that at the end of 2006, scientists would start to upgrade Godson 2E to Godson 2F, which will improve performance by about 30% and power consumption reduced by about 50%. By 2008, Godson-3 is scheduled to enter production.

        On November 13, 2006, at the [Chinese Academy of Science's Institute of Computing Technology (ICT), Mr. Li Guojie (李国杰) announced to the public that "Godson 2E is ready for mass production. Mr. Li Guojie (李国杰) told the public that from Godson 1 to Godson 2B, the capability of the chip has tripled, and from Godson 2B to Godson 2C, from Godson 2C to Godson 2E, the capability has continuously tripled. On the average, the capability of Godson series chip doubles every year, four times of what Moore's law claims, and China should accumulate small successes into large success."

        另外,如果现在ST承诺销售1000万片,为什么在ST网站搜索"godson"没有结果? BLX网站上也没有龙芯2相关资料和开发工具包。

        神州龙芯 > 下载中心

        除非这1000万片只被几个用户包了,否则现在应该有样片、开发工具包等等可以定购、下载,否则下游厂家怎么拿得出产品?我们这里的芯片从下家拿到样品,到下家拿出系统-〉下单-〉大规模生产,至少半年(极顺利情形,一般要一年甚至更多)。而没有下家的订单,怎么敢大规模生产?

        我的判断是:这里肯定有不小的夸大。

      • 家园 龙芯是军用级设计么?

        你莫非在开玩笑?

        中国军方的军用级芯片主要靠走私美国货。可靠性主要靠工艺和封装保证,这是中国的弱项。

      • 家园 明显就是来故意唱衰龙芯的

        一股冷嘲热讽的口气

        最不喜欢这种没意思的文章,拜托,要打击国人信心也应该高明一点不是,这种文章没人愿意看的

        400M主频的cpu性能不一定小于1G主频,体系不一样的cpu比较主频没什么意义,简单举个例子,PS2主机的主频也只不过300M hz,不过他的处理能力是奔腾300M hz的CPU能比的吗?就连现在P4的机器跑PS2的移植游戏性能都远远不如PS2呢

        • 家园 简单比较主频的确不合适

          拿来跑跑spec或者是sissoft benchmark 之类的性能测试软件就可以知道了。

          龙芯靠3-8瓦功耗可以跑到早期p4得性能,这种话说出来恐怕是把大家当傻子忽悠呢。

    • 家园 要求太高

      非得龙芯一上来就拳打intel,脚踢amd。

      搞一款真能用的cpu,几十亿就不算个啥。

      • 家园 没人这么要求龙芯

        看看国内的呼声.

        大家都觉得,只要龙芯过得去,有个合理的性价比,都坚决支持.

        走低端可以,做嵌入式也没问题.关键是得有实实在在的商业产品.

        咋呼了好几年了,连个datasheet 也不公布,商业机型上市遥遥无期. 这总得有个说法吧?

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