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AI 调研,OCS 波导方案碾压 MEMS ?Rubin 二代布性能不合格,全部使用 Q布?

AI 调研,OCS 波导方案碾压 MEMS ?Rubin 二代布性能不合格,全部使用 Q布?

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这周末来了两则小作文,关 Goog 的 ocs 方案和 NV Rubin 二代布和 Q 布,看到很多人发,说到点子上的不多。

谷歌 OCS 波导方案终结 MEMS 方案?
2026年5月23日,谷歌在最新一代 V8i 推理芯片组网中正式确立硅基波导 OCS 的主推地位,并建议国内旭创等重点厂商放弃 MEMS 技术路线。波导 OCS 方案超低时延低至 6 纳秒,对 MEMS 方案的 80-100 纳秒实现数量级碾压,终结了两条路线在低时延推理领域的竞争。
先说结论:小作文不准确,短期 MEMS 方案仍是主流,波导方案仅在 V8i 推理芯片场景部分使用。
这一说法目前来看不够准确,MEMS 仍是商用主流,波导方案是下一代突破方向,而非“已淘汰”。MEMS 方案当前占主导地位。谷歌 OCS 内部代号Apollo,基于自研 Palomar 3D MEMS技术,形成 136×136 全互联光交换,已在TPU v4超算系统中规模部署。目前 OCS 参与者中采用基于3D MEMS 技术的厂商较多,谷歌和 Lumentum 以 MEMS 方案为主。波导方案(硅光方案)是下一代方向,尚处研发阶段。
光波导方案(硅光波导)切换速度比 MEMS 快10倍,传输效率提升30%。行业普遍认为,MEMS微镜为当前商用主流,硅光波导很可能是下一代核心突破方向。谷歌也在积极测试新方案。谷歌此前 OCS 采用 MEMS 微镜,因良率问题需屏蔽部分通道,现正测试压电陶瓷(DLBS)方案,毫秒级切换速度比 MEMS 快一个数量级。
所以,更准确的表述是:MEMS 是当前绝对主力的成熟商用方案,波导/硅光方案性能更优,但尚未完全商业化,属于下一代演进方向,而非“MEMS已被淘汰”。

受制于波导与 SOA矩阵芯片的低良率成本和产能制约,波导方案的 ocs 并无法满足 Goog 对 OCS 64 和 128 口交换机的需求,短期仍是 MEMS 为主,波导为辅。

Rubin 二代布性能不合格,采用 Q布?
周末传言,nv 因为二代布在 Rubin 的性能测试不合格,将全部采用 Q布。电子布调研,主要玩家和扩产情况?中国巨石 宏和科技 中材科技 国际复材
这简直太扯了,上周我在菲利华调研,稀缺属性,Q布何时放量?写的很清楚了,q 仅在 rubin 高端场景使用,到 rubin ultra 版本才会成为主力。
先说结论:NV 当然想用 Q布,但不是性能测试不合格,而是有两个限制,一是 Q布产能太小,连需求的零头都不够,根本不够用,二是 Q布目前良率低、成本大出一截。
Rubin基础版:二代布仍是主力。 Rubin基础版计划2026下半年量产发货,其计算托盘、交换托盘明确使用 M8 覆铜板+二代低介电布,稳定量产中,因 Q布良率和成本等综合考虑,使用 M8二代布不影响其性能,单机用量约80多平方米,是二代低介电布的核心需求来源。关键部件已强制使用 Q布(第三代布)。 中背板、CPX专用板、转接卡则必须使用 M9 覆铜板+Q布,适配224G高频高速传输。交换机(Switch Tree)大概率采用“M9+Q布+HOP4”顶配方案。有分析指出,普通玻纤布(一代/二代)在高层数场景下良率不足50%,等于直接淘汰,而Q布可实现70–84层不变形、不分层,良率>85%,是Rubin唯一可量产的主力材料。Rubin Ultra:全面转向Q布。 2027年量产的 Ultra 版,全组件包括 104层正交背板、计算托盘、交换托盘等大概率全部使用 M9覆铜板+Q布,单机 Q布用量达225平方米,是基础版的 9倍。因此,正确理解是:基础版部分部件继续用二代布,但核心高频部件已强制使用 Q布;到 Ultra 版则全面淘汰二代布。 2026年 Q布缺口率约31%,价格280-320元/米,供应高度集中于菲利华等少数厂商。

免责声明:本文仅为个人日记,不构成任何建议。投资有风险,投资要谨慎。

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  1. CONNECT:[ UseTime:0.000623s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000817s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000361s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000299s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000476s ]
  6. SELECT * FROM `set` [ RunTime:0.000210s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000567s ]
  8. SELECT * FROM `article` WHERE `id` = 663540 LIMIT 1 [ RunTime:0.000795s ]
  9. UPDATE `article` SET `lasttime` = 1779886219 WHERE `id` = 663540 [ RunTime:0.001257s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000267s ]
  11. SELECT * FROM `article` WHERE `id` < 663540 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000406s ]
  12. SELECT * FROM `article` WHERE `id` > 663540 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000365s ]
  13. SELECT * FROM `article` WHERE `id` < 663540 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000824s ]
  14. SELECT * FROM `article` WHERE `id` < 663540 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000595s ]
  15. SELECT * FROM `article` WHERE `id` < 663540 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000608s ]
0.114961s