英特尔 Larrabee 体系架构讨论主题

complexmind

不是原来说和高端产品有得一拼的么。。。。。。。。。

[ 本帖最后由 complexmind 于 2008-8-27 00:45 编辑 ]

the_god_of_pig

原帖由 RacingPHT 于 2008-8-27 09:50 发表


Intel恐怕不傻，不过你挺傻的，第一张图是Raytrace, 第二张图是Rasterizer。如果反过来让8500GT做Raytrace的话，恐怕比爬还要快。

光线追踪那个表里又没有8500gt,只是为了知道LRB相对OoO CPU，不过貌似如果不是RayTrace,LRB要超OoO的U更多{biggrin:]
再说不是光栅也无妨啊，反正现在都是YY,大概其而已{victory:] {lol:] {victory:]

szxq

技术讨论帖。。。看来gz的高人不少啊。。。{lol:]

gmid

intel虽然很强。但是显卡。不是很看好{shy:]

ITANIUM2

倒，俺那个帖子是纯转载。对那个结果表示怀疑  :(

原帖由 Edison 于 2008-8-26 16:14 发表
你说的是这个人？

http://we.pcinlife.com/viewthread.php?tid=919468

Prescott 能说说游戏性能上 Larrabee 是相当于什么水平？

Edison

根据微软在 Gamefest 08 上的 "Direct3D 11 Compute ShaderMore Generality for Advanced Techniques" 介绍，Compute Shader 会引入类似 shared memory 的 shared register 特性，这样一来，Compute Shader、OpenCL 基本上都具备了 CUDA 的 shared memory 支持，不过现在 Compute Shader 的规格相对 OpenCL 来说更加清晰，例如提到了最大可支持的 shared register 是 32KB，这实际上就是相当于 Larrabee 的 sub-iL2 cache 除以 4(MT)。

Edison

Concept art for Intel’s Larrabee launch title released ：

http://www.tgdaily.com/content/view/39211/135/

Edison

LRB2 方面的消息:

https://intel.taleo.net/servlets ... h77sa1.RJS2343_2344

Description

In this position, you will be part of an exciting team developing and deploying state-of-art Emulation technologies for validation of Intel Larrabee (LRB) Graphics processors. You'll be focusing on some of the responsibilities that include but are not be limited to:
- Responsible for the Emulation Model Builds including RTL coding, linting, synthesis and others
- Developing and executing validation plans for Emulation including test-bench/ tests development, debug and others
- Working with Pre/Post Si Validation teams, SW OS and/or driver and/or Application teams to develop and execute emulation solutions for LRB2
- Working with design teams, and tool vendors to execute LRB2 Emulation plans, develop tool methodologies and flows and others
- Working on full-chip, system-level, sub-FC validation for emulation

https://intel.taleo.net/servlets ... e=en&csNo=10000

In this position, you will be part of the manufacturing operations team in the Visual Computing Group, part of DEG. You will have broad-based responsibility for enabling ODM and/or CM manufacturing capability and readiness to produce Larrabee based board products. These will be dual-sided, +wave, PCI form factor cards with soldered down, high performance memory and a very large FCBGA processor. The card will also have a large thermal solution assembly. You will be working with responsible design, engineering, and TD groups on ensuring the appropriate manufacturing process collateral is developed and delivered. They will own Mfg Risk assessments of the CM/ODM's and developing and executing a risk mitigation strategy to ensure successful product launch. You will own defining and driving the manufacturing flow requirements including packaging, manual assembly, inspection guides and requirements. You will also drive collaborative design reviews of the card and assemblies during the design cycle to ensure product manufacturability, yields, cost effectiveness, and efficiency through the use of DFx rule analysis and other related tools. Your responsibilities will include but not be limited to:
- Providing Manufacturing Assembly Instructions and training to factories, and ongoing factory support as necessary in support of product specific issue resolution and product improvement
- Responsible for Engineering change control management and implementation on product to ensure readiness for effective factory execution
- Responding to customer and/or client requests or events as they occur
- Driving action and closure on manufacturing issues impacting ability to deliver product
- Developing solutions to problems utilizing formal education and judgment

SnowSun

感觉Larrabee就是在用x86对抗ALU+TMU，用现在的“软”方法对抗“硬”方法，从传统的maya结果来看，很期待intel的图像质量，不过x86的效率还是值得怀疑

[ 本帖最后由 SnowSun 于 2008-10-13 23:19 编辑 ]

Edison

原帖由 SnowSun 于 2008-10-13 23:17 发表
感觉Larrabee就是在用x86对抗ALU+TMU，用现在的“软”方法对抗“硬”方法，从传统的maya结果来看，很期待intel的图像质量，不过x86的效率还是值得怀疑

larrabee 的主要资源还是放在 ALU+TMU上。

Edison

根据微软最新的资料，D3D 11 包含了被称作 warp10 的软件渲染模式，不过和之前的 RefRast 参考渲染器不同的是， warp mode 的性能比 RefRast 快数百倍，特性上等同 D3D10.1。

综合来看， warp mode 应该是 Larrabee 比较理想的 D3D 渲染模式之一，或者说仅次于 HAL。

{titter:]

G81

好象后藤那边又放出了larrabee的最新消息{time:] 希望各位大大继续讨论

Edison

忘记 post 我的老朋友写的一篇相关的报道：

http://www.xbitlabs.com/articles ... ee-interview_4.html



:charles:

Edison

忘记 post 我朋友写的一篇相关的报道：

http://www.xbitlabs.com/articles ... ee-interview_4.html

亮点不多。

"we still have hardware HD video decoders and texture samplers. This is because in the worst case scenario, the Larrabee cores were 40 times slower than fixed function texture samplers."


:charles:

Edison

在第一帖中增加了 GDC 09 中关于 LRBni 的相关信息。

itany

在第一帖中增加了 GDC 09 中关于 LRBni 的相关信息。
Edison 发表于 2009-2-17 01:14

谢谢站长，不过链接需要授权吧？

dreamz3

x86是intel的主要优势，intel当然不会那么容易的放弃。
epic方面，之前的64位转移问题已经证明了x86旧有体系的强大，再强行使用新架构估计同样会败。
因此，x86显然是最好的选择。

dreamz3

目前而言larrabee的专业效能应比游戏效能好很多，相对而言larrabee的定位作为graphic co-processor比较合适～游戏方面近几年应该还是n,a的天下