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네트워크 카드 제품중에 HPE제품으로 4x25Gb 1port NIC제품이 있는데 어떻게 속도를 계산하는 것인지 궁금합니다.

infiniband제품중엔 100Gb 제품이 있던데 이런 제품들이 진짜 이 정도 급으로 속도가 나오는 것인지 궁금합니다.

이런 제품들의 동작원리를 간단하게 말씀해주셔도 감사하겠습니다.


гǴٿ 01-23
Form-factor ȭϱ ؼ SFP(+) 4  QSFP(+) Ʈ īԴϴ. Ƹ δ 25(28)Gbps MAC/PHY 4 īϰ̴ϴ. װ ϳ LACP ͵ .. driver ׳ ϳó ۽Ű ͵ 󸶵 ƿ. frame ؼ 100Gbps ӵ burst rate 100Gbps ϴ ϰ.
ũ 100Gbps NIC ִ 𸣰ڳ׿. Ʈ QSFP28̶ 4 ũ ϴ Դϴ.
01-23
4x25Gb 1port NIC ϸ QSFP28 ԰ Ʈ Ѱ ִ ε
"QSFP" ܾ  "Q" ǹϴ Quad, 4 Դϴ.
QSFP+ (40Gb) SFP+(10Gb) 4 ϳ ̰
QSFP28 (100Gb) SFP28(25Gb) 4 ϳ Դϴ.
׷ QSFP Ѱ Ʈ 40G Ǵ 100G

http://www.mellanox.com/related-docs/prod_cables/PB_MC6709309-xxx_8_Fiber_MPO_to_4_x_2_Fiber_Duplex_LC_Passive_Optical_Splitter.pdf
https://www.mellanox.com/related-docs/prod_cables/PB_MFA7A50-Cxxx_100GbE_QSFP28_to_4x25GbE_SFP28_MMF_AOC.pdf
splitter ̺ ̿ؼ Ѱ ƴ϶ 4 Ʈ մϴ.
ġ ɾ ϳ NIC ߿ܿ ʿ ֽϴ.

Ϲ Ethernet̵ Infiniband α ǰ ƴ ̻ ϵ õǾ ִ 40G, 100G 뿪 Fully
(packet ó 忡 õԴϴ.)
iperf ׽Ʈغ 100Gbe NIC Ϲ 40~50 Gb 뿪 ۿ ʽϴ.
̴ ϵ ƴ OS Kernelܿ ɷ ׷ϴ. ׸  Ʃ ؼ ġũ δ 뿪 Ǵ
غ ׸ŭ 뿪 ʴ° Ϲε ̴ Ʈ ܿ ׸ŭ ϴ 찡 κԴϴ.
(10G ó غ 200~300MB/s ɹۿ ȳ, 10G ٸ Ʃ׾̵ κ α׷ Ǯǵ尡 ˴ϴ.
rsync ͸ غ 200 MB/s ۿ ӵ , bbcp α׷ 10G Ǯǵ尡 ɴϴ.)

Ʈũʿ ϵ ؼ Ʈ 󰡰 ִ Ȳ̾
װ Ÿϱ   UIO, RDMA, SolarFlare OnLoad Ǵ TcpDirect Kernel-Bypass ֽϴ.

Infiniband Ethernet ޸ ⺻ RDMA (Remote Direct Memory Access) ϴµ
RDMA ū Ư¡ Kernel Bypassϰ ϵ ܿ κ ó(offload)DZ
FDR̸ 56G, EDR̸ 100G 뿪 cpu 0% մϴ.
Ethernet RoCE ̿ϸ RDMA ֱ 100Gbe 100G Ǯ 뿪G մϴ.
ڹ 01-23
̴ 10G 40G 100G ϴٰ 100G ߰ 40G 25G ֽϴ..

100G ī / 콺 / çÿ  ִµ ݴ ɺ ȣȯ 콺 ǰԴϴ..

ġ 콺 ɴϴ.. 굵 ؼ ְ..

https://www.edge-core.com/

ø ġ ɴϴ..


100G ϸ ϱ ؼ PCIe Gen 3.0 ּ 8̳ 16 ʿմϴ..

̰͵ ڿ Ϸ AMD EPYC ϴٰ ɴϴ..

ǰ 100G ϰ ũ⿡ ϱ ٰ ø ˴ϴ..

ȸԵ鵵 ϰ ʴϴ..

http://www.2cpu.co.kr/QnA/682505?&sfl=wr_name%2C1&stx=%C6%E4%B8%A3%BC%BC%BF%EC%BD%BA&sop=and



ϴٰ ø ˴ϴ..
Chrome 01-23
ִ Mellanox ConnectX-4, ConnectX-5 100GbE ī ϰ ְ ī 100GbE ġ ֽϴ. ӵ ɴϴ. ٸ Ϲ OS δ , Ŀ Ʈũ нϰ RDMA over Ethernet Ȱؾ 100Gbps ֽϴ. , ConnectX-4 PCIe 3 ԰ε, PCIe 3.0 x16 뿪 200Gbps ÿ 100Gbps 뿪 ʽϴ. ׸ ̰ SFP-QSFP ó SFP28 4 QSFP28 ԰Դϴ. ׷ ġ ַ Splitter ̺ ̿ؼ 10Gbps 25Gbps 4 иؼ ϴ 찡 ϴ. 1U Half-width ġ 100Gbps Ʈ 16ε, ̰ 4 ⸸ ص Half-Width 64Ʈ Ǵ Ʈ ܰ ϸ 鿡 մϴ.
Dominozlol 01-24
е մϴ. ū  Ǿ մϴ.




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