目錄
AI專用算力芯片
ASIC/GPU/XPU形態(tài)
AI計算板卡/模組之間的機箱集群互聯(lián)技術
NVLINK,Inifiband,Ethernet
有必要重新介紹一下XENA公司
原:Xena Networks/信雅納網絡
Valkyrie產品系列
Vulcan產品系列
Chimera產品系列
Vantage產品系列
Safire產品系列
Virtual產品系列
現(xiàn):Teledyne Lecroy Xena
Teledyne to Acquire Xena Networks
Xena產品系列
Z系列
Z01 Odin
Z10 Odin
Z100 Loki
Z400 Thor
Z800 Freya
Z1600 Sif
E系列
E100
E400
E800
針對Ethernet以太網高速互聯(lián),Xena提供的測試用例
L1層的測試用例
RS-FEC
Auto-Negotiation
Link Training
AN/LT- Debug
Tx Taps/ Rx Taps
?PPM Adjustment
I2C R/W
SIV(Singnal Intergrity View)
Link Flap
Error Injection
FEC Error Injection? ? ? ? ? ? ? ??
PMA Error Injection
L23層的測試用例
Wire-speed Traffic
50/100/200/400G: Z400q Thor,Z800q Freya,Z800o Freya
100/200/400/800G:Z800q Freya,Z800o Freya
MAC/IP/TCP/RDMA業(yè)務報文流量
協(xié)議字段的跳變
Packet Error模擬
PFC
L3+層的測試用例
RDMA QP
User-Define Protocol
NCCL通信庫
損傷-負面壓力仿真
Link Flap鏈路震蕩
PCS/PMA Error注入
報文延遲/抖動注入
重復業(yè)務報文
帶寬限速
鎖定到特征報文施加損傷
API二次開發(fā)接口
CLI
XOA
HLAPI
兼容性/互通性保障
Ethernet Alliance以太網聯(lián)盟
UNH-IOL
AI專用算力芯片
ASIC/GPU/XPU形態(tài)
AI專用芯片各類產品形態(tài):ASIC/GPU/XPU/FPGA,...?
AI計算板卡/模組之間的機箱集群互聯(lián)技術
NVLINK,Inifiband,Ethernet
便宜又大碗的,只有以太網技術~
在規(guī)模較小的時候,AI加速板卡與板卡之間的通信是在一個服務器機箱內,依靠PCIE/CXL即可搞定,但隨著訓練模型的增大,AIGC等火熱,跨機箱的通信是個邁不過去的坎了,高帶寬,低延遲,高可靠性都混雜在一起的需求屬實難辦。
NVLINK是綁定在全家桶里面銷售的,沒有單賣的方案。IB屬實不算開發(fā)的技術,成本賊高暫不提。Ethernet屬于便宜又大碗的,生態(tài)開放,雖然比較古老,有各種小毛病需要克服,但修修補補還是挺能打的。
尤其是國內市場信創(chuàng)產業(yè)的要求,Ethernet以太網技術的互聯(lián)將是AI算力板卡模塊之間高速互聯(lián)/集群互聯(lián)的陽光出路。
有必要重新介紹一下XENA公司
原:Xena Networks/信雅納網絡
?
專注做有線以太網測試儀表的丹麥廠商,提供L27完整的測試解決方案,只要是帶以太網網口的,我們都能測。
產品性能與思博倫Spirent, 意達康Ixia可以對飆的,價格與國產打流儀表很接近。
以上這兩句是以前拜訪客戶的時候常說的,... 雖有一些夸大的成分,但也基本屬實。
然后那時候有好幾個產品系列支持不同的測試場景:
Valkyrie產品系列
針對Layer23的性能測試測試產品:Odin-10/100/1000M千兆,Odin-100M/1/2.5/5/10G萬兆,Loki-10/25/40/50/100G QSFP28 100G,Thor-10/25/40/50/100/200/400G QSFP-DD 400G,還有支持汽車以太網的支持TSN特性的版本,以及支持工業(yè)以太網特性的AE版本
主要用以驗證吞吐量/延遲/抖動/丟包率/以太網業(yè)務性能和業(yè)務品質
Vulcan產品系列
針對Layer47層的性能測試產品:CC,CPS,TPS等各類并發(fā),真實的負載業(yè)務流量仿真,主要是用在測試防火墻,DPI,網閘等安全類設備的功能和性能上
Chimera產品系列
針對10/25/40/50/100G高速以太網的負面壓力測試工具,可以提供10ns級別的時延注入,抖動注入,誤碼注入,報文重復,比特修改等
Vantage產品系列
針對亞太市場的產線的網絡性能驗收測試工具,可以集成客戶的MES生成制造系統(tǒng)進行網絡性能的驗收測試
Safire產品系列
針對企業(yè)IT運維場景,SD-WAN,NGFW評測等場景推出的防火墻測試評測工具
Virtual產品系列
針對云原生的環(huán)境進行部署測試場景,提供L23和L47的完整性能測試驗證
現(xiàn):Teledyne Lecroy Xena
然后的然后,我們在去年的10月份,并入到了Teledyne Lecroy. Xena成為了它的一個子品牌
產品線也就該砍掉的砍掉的,該整合的整合,把L47層防火墻測試產品拿掉了
剩下的產品線都歸在Xena產品線,原公司名稱成了產品系列的名稱
而且為了更好的對齊Teledyne Lecroy的產品系列,命名形式也改了
對應的Z系列為Traffic Generator & Analysisor,E系列為Emulator
Teledyne to Acquire Xena Networks
October 3, 2023
???Will Expand Teledyne LeCroy’s Protocol Test Portfolio to include Terabit Ethernet Traffic Generation and Network Emulation
THOUSAND OAKS, Calif. – October 3, 2023 – Teledyne Technologies Incorporated (NYSE:TDY) (“Teledyne”) announced today that it has entered into an agreement to acquire Xena Networks ApS (“Xena Networks”). Xena Networks, headquartered outside of Copenhagen, Denmark, is a leading provider of high-speed Terabit Ethernet validation, quality assurance, and production test solutions.
“The Xena Networks acquisition will further establish our leadership in the protocol test market, extending our reach to Ethernet system validation engineers, quality assurance labs, and production lines for test, evaluation, and acceptance of Ethernet components and systems,” said Robert Mehrabian, Chairman, President, and Chief Executive Officer of Teledyne. “The acquisition of LeCroy in 2012 provided a healthy and growing portfolio of protocol test businesses focused on PCI Express, USB as well as storage and networking technologies. Since then, we expanded Teledyne LeCroy’s protocol test business with multiple acquisitions, including Quantum Data (for video), Frontline (for Bluetooth and WiFi) and OakGate (for storage devices test solutions). Xena Networks will be a powerful addition to this strong and growing protocol test portfolio.”
Artificial intelligence and machine learning, high-performance computing and 5G all require ever higher speeds of data transmission and fuel the need for new solutions to test next generation Terabit Ethernet network components. The same network equipment manufacturers that today use Teledyne LeCroy’s network protocol analysis and error injection tools also require high-performance Ethernet traffic generation and network emulation test tools to validate product designs. Xena Networks test tools offer in-depth Ethernet link training and auto negotiation test capabilities, which next generation Terabit Ethernet products need to ensure that expected performance is achieved. “Combining the traffic generation and network emulation capabilities of Xena Networks with the protocol analysis functionality of Teledyne LeCroy will deliver a unique value proposition in support of semiconductor and network equipment manufacturers, network service providers, and hyperscale and cloud computing providers,” said Kevin Prusso, Vice President and General Manager of Teledyne LeCroy.
Jacob Vestergaard Nielsen, Xena Networks Chief Executive Officer, said, “We’re excited to join Teledyne LeCroy and leverage its wide coverage of protocols technologies. In particular, Teledyne’s network protocol analysis solutions complement well our traffic generation, physical layer, and network emulation products with support of up to 800Gbps Terabit Ethernet data rates, to the benefit of our customers.”
About Teledyne LeCroy
Teledyne LeCroy is a leading manufacturer of advanced protocol analyzers, oscilloscopes, and other test instruments that verify performance, validate compliance, and debug complex electronic systems quickly and thoroughly. Since its founding in 1964, the Company has focused on incorporating powerful tools into innovative products that enhance “Time-to-Insight.” Faster time to insight enables users to rapidly find and fix defects in complex electronic systems, dramatically improving time-to-market for a wide variety of applications and end markets. Teledyne LeCroy is based in Chestnut Ridge, New York. For more information, visit Teledyne LeCroy’s website at?teledynelecroy.com.Forward-Looking Statements Cautionary Notice
This press release contains forward-looking statements, as defined in the Private Securities Litigation Reform Act of 1995, relating to a pending acquisition of a company subject to customary closing conditions. Actual results could differ materially from these forward-looking statements. Many factors, as well as market and economic conditions beyond either company’s control, could change anticipated results. There are additional risks associated with operating businesses internationally, including those arising from United States and foreign government policy and regulatory changes or actions and exchange rate fluctuations.?
Xena產品系列
Z系列
Z01 Odin
10/100/1000M, BASE-T,RJ45,SFP,Base-T1
Z10 Odin
100M/1G/2.5G/5G/10G, SFP+,BASE-T
Z100 Loki
10/25/40/50/100G, QSFP28, NRZ
Z400 Thor
10/25/40/50/100/200/400G ,QSFP-DD, 56G PAM4, 28G NRZ
Z800 Freya
50/100/200/400G , 56G PAM4, 100/200/400/800G ,56G PAM4, 112G PAM4,QSFP-DD, OSFP
Z1600 Sif
200/400/800/1600G OSFP,224G PAM4
E系列
E100
10/25/40/50/100G QSFP28網絡損傷仿真測試儀,最大帶寬為100G的網絡損傷
E400
50/100/200/400G QSFP-DD網絡損傷仿真測試儀,最大端口帶寬為400G的網絡損傷
E800
100/200/400/800G QSFP-DD OSFP網絡損傷仿真測試儀,最大帶寬為800G的網絡損傷
針對Ethernet以太網高速互聯(lián),Xena提供的測試用例
L1層的測試用例
RS-FEC
大概就是下圖可以概括的東西,分別統(tǒng)計每個LANE(可以精細到Virtual lane)的FEC Block的誤碼情況,查看多少的symbol code被糾正過來了,多少個Symbol error是不可糾的的一個統(tǒng)計分布情況。
Auto-Negotiation
端口自適應,對應的規(guī)范是 IEEE 802.3 Clause 73 and ETH. 400G/800G specifications
通俗點講就是驗證在銅纜狀態(tài)下,線纜的端口是能不能都能鏈接到800G,如果不行,那就工作在400G,如果還是不行,那就是工作在200G,.... 100/50G,跟之前的10/100/1000M端口自適應是基本類似的概念了
Link Training
鏈路學習,對應的規(guī)范是?IEEE 802.3 Clause 136 and 161
AN/LT- Debug
可記錄每個AN/LT Trace完整的通信過程,記錄詳細的底層日志進行分析,支持端節(jié)點的仿真,進行單步的調試分析
Tx Taps/ Rx Taps
調節(jié)PHY/SerDes的均衡信息,來測試驗證對端的匹配適應情況
PPM Adjustment
±400PPM的調節(jié),步進式或平滑曲線的動態(tài)跳變
I2C R/W
基于I2C的方式去操作控制光模塊的寄存器信息,可以用在CMIS 4.0,CMIS5.0等規(guī)范的校驗
SIV(Singnal Intergrity View)
眼圖測試,信號完整性測試
Link Flap
鏈路閃斷測試
Error Injection
錯誤插入模擬驗證
FEC Error Injection
針對每個FEC編碼校驗塊的錯誤注入? ? ? ? ??
PMA Error Injection
針對PCS/PMA層的錯誤注入,在儀表端為PMA Error,經過后續(xù)的編碼后,體現(xiàn)在DUT端為PCS Error
L23層的測試用例
Wire-speed Traffic
線速的以太網報文流量業(yè)務壓力測試,構建MAC/IP/TCP/UDP/RDMA等不同的業(yè)務報文
50/100/200/400G: Z400q Thor,Z800q Freya,Z800o Freya
QSFP-DD接口,基于56G PAM4的400G接口
OSFP接口,基于56G PAM4的400G接口
100/200/400/800G:Z800q Freya,Z800o Freya
QSFP-DD接口,基于112G PAM4的800G接口,同時向前兼容56G SerDes
OSFP接口,基于112G PAM4的800G接口,同時向前兼容56G SerDes
MAC/IP/TCP/RDMA業(yè)務報文流量
協(xié)議字段的跳變
MAC/IP/TCP等不同協(xié)議字段的跳變,使用Streams+跳變來實現(xiàn)千萬計的Flows并發(fā)
Packet Error模擬
FCS Error,CRC Error, Checksum Error
PFC
Priority-based Flow Control,基于優(yōu)先級的流量控制測試
L3+層的測試用例
基于TCP的業(yè)務測試 & 基于UDP的業(yè)務測試
RDMA QP
兆級別的QP建鏈仿真,并發(fā)維護驗證,并發(fā)性能評測,按QP業(yè)務場景的延遲抖動會話數(shù)測試
DCQCN算法支持
操作驗證ECN字段實現(xiàn)的業(yè)務流量級別的擁塞控制仿真和驗證
User-Define Protocol
完全用戶自定義的協(xié)議測試,私有協(xié)議驗證和仿真
NCCL通信庫
Nvidia Collective multi-GPU Communication Library,通信庫測試仿真驗證(all-gather, reduce, broadcast)
大規(guī)模的通信模型仿真,GPGPU的千卡,萬卡集群的通信仿真
損傷-負面壓力仿真
Link Flap鏈路震蕩
模擬光模塊的一些異常行為,可以是10ns級別的抖動行為
PCS/PMA Error注入
各類物理層的誤碼注入,異常注入
報文延遲/抖動注入
Packet /Frame 級別的損傷
重復業(yè)務報文
Packet /Frame 級別的損傷
帶寬限速
Packet /Frame 級別的損傷,擁塞情況的模擬
鎖定到特征報文施加損傷
通過過濾器的支持,可鎖定特定的MAC地址,IP地址,協(xié)議字段等特性,僅對特寫報文進行損傷施加業(yè)務
API二次開發(fā)接口
CLI
基于腳本的二次開發(fā)
XOA
二次封裝的Python API庫文件支持
HLAPI
其他高階封裝的API文件支持,C#,C++,Labview等
兼容性/互通性保障
Ethernet Alliance以太網聯(lián)盟
參與以太網聯(lián)盟的相關活動
UNH-IOL
The University of New Hampshire InterOperability Laboratory (UNH-IOL)互插拔活動文章來源:http://www.zghlxwxcb.cn/news/detail-855217.html
待補充
2024年3月25日20:29:15,后續(xù)再補上一些細節(jié)和圖片文章來源地址http://www.zghlxwxcb.cn/news/detail-855217.html
到了這里,關于AI算力芯片(ASIC/GPGPU/XPU)之以太網測試用例支持(400G 56G PAM4 & 800G 112G PAM4 SerDes、QP、RDMA、PFC、DCQCN、NCCL通信庫)的文章就介紹完了。如果您還想了解更多內容,請在右上角搜索TOY模板網以前的文章或繼續(xù)瀏覽下面的相關文章,希望大家以后多多支持TOY模板網!