Download - DMA, Infiniband

Transcript
Page 1: DMA, Infiniband

DMA, RDMAINFINIBAND vs Gigabit Ethernet

Hallym Univ. Park Chunduck

Page 2: DMA, Infiniband

Bus Architecture• Performance Problem

Page 3: DMA, Infiniband

DMA• Direct memory access (DMA) is a fea-

ture of computer systems that allows cer-tain hardware subsystems to access main system memory (RAM) independently of the central processing unit(CPU).

Page 4: DMA, Infiniband
Page 5: DMA, Infiniband

Gigabit Ethernet• 1970 년대 초 Xerox 사에서 완성된 연구 결과• 오늘날 물리 계층과 링크 계층 프로토콜을 널리

채용하는 데 큰 역할을 하였다 .– 1998. standard IEEE need optical fiber(광섬유)– 2002. fiber standard rectified 승인– 2009. 1Gb -> 10Gb Ethernet change

• join high performance server system market

Page 6: DMA, Infiniband

INFINIBAND•  I/O  처리에 따른 성능 저하를 해결하기 위해 1999년 InfiniBand Trade Association(IBTA) 라는 단체 출범•  Dell, Intel, Sun, AMD, HP, IBM,  오라클 ,  시스코 등 업체가 참여 하였다 .  슈퍼컴퓨터나 HPC(High Perfor-

mance Computing) 에서 서버간 데이터 통신에 사용되고 있다

Page 7: DMA, Infiniband

InfiniBand network topology• HCA(Host Channel Adapter), It is a bridge connecting the

memory controller and TCA• TCA(Target Channel Adapter), It will I/O equipment (for ex-

ample, SCSI controller card) digital signal to send to HCA

Page 8: DMA, Infiniband

InfiniBand network topology• Switch• TCA• HCA• Gateway

Page 9: DMA, Infiniband
Page 10: DMA, Infiniband

인피니밴드 vs. 기가비트 이더넷’ 프로토콜 기술 경쟁• 네트워크 센터 시장에서의 라이벌• Gigabit Ethernet – 중급 규모의 데이터 센터들은 Ethernet 으로 연결 (확장성 )– Now Gigabit Ethernet can be Big HPC System

• InfiniBand– 많은 노드를 Single HPC 에 연결하려면 InfiniBand 를 사용– High Performance Datacenter need Infiniband

Page 11: DMA, Infiniband
Page 12: DMA, Infiniband
Page 13: DMA, Infiniband

Ethernet in the TOP500• mid 2010– Infiniband Ethernet Total

Page 14: DMA, Infiniband

Ethernet and Infiniband in "Industry" Seg-ment

– Infiniband Ethernet

Page 15: DMA, Infiniband

Number of Ports on TOP500 List and Industry Seg-ment

Page 16: DMA, Infiniband

The Tiers• The Uptime Institute categorizes the data

centers by four levels: Tier I, II, III and IV. 

• These levels correspond to a certain num-ber of guarantees on the type of hardware deployed in the data center to ensure redundancy( 중복 )

Page 17: DMA, Infiniband

The Tiers• T3(Cold-swap) , T4(Hot-swap)– Hot swap : exchanage device when it working


Top Related