lustre* filesystem doug oucharek intel ® high performance data division * some names and brands may...
TRANSCRIPT
![Page 1: Lustre* Filesystem Doug Oucharek Intel ® High Performance Data Division * Some names and brands may be claimed as the property of others](https://reader036.vdocuments.us/reader036/viewer/2022082413/56649f535503460f94c77b31/html5/thumbnails/1.jpg)
Lustre* Filesystem
Doug OucharekIntel® High Performance Data Division
* Some names and brands may be claimed as the property of others.
![Page 2: Lustre* Filesystem Doug Oucharek Intel ® High Performance Data Division * Some names and brands may be claimed as the property of others](https://reader036.vdocuments.us/reader036/viewer/2022082413/56649f535503460f94c77b31/html5/thumbnails/2.jpg)
2
Lustre and LNet
March 30 – April 2, 2014 #OFADevWorkshop
![Page 3: Lustre* Filesystem Doug Oucharek Intel ® High Performance Data Division * Some names and brands may be claimed as the property of others](https://reader036.vdocuments.us/reader036/viewer/2022082413/56649f535503460f94c77b31/html5/thumbnails/3.jpg)
3
LNet and OFED
March 30 – April 2, 2014 #OFADevWorkshop
![Page 4: Lustre* Filesystem Doug Oucharek Intel ® High Performance Data Division * Some names and brands may be claimed as the property of others](https://reader036.vdocuments.us/reader036/viewer/2022082413/56649f535503460f94c77b31/html5/thumbnails/4.jpg)
4
Example: Sending File Data
March 30 – April 2, 2014 #OFADevWorkshop
![Page 5: Lustre* Filesystem Doug Oucharek Intel ® High Performance Data Division * Some names and brands may be claimed as the property of others](https://reader036.vdocuments.us/reader036/viewer/2022082413/56649f535503460f94c77b31/html5/thumbnails/5.jpg)
5
Health Network: Now and Future• Today: Peer to Peer
pings (O(n))• Future: Gossip
Protocol• Fault tolerant O(log n)
global state distribution latency
March 30 – April 2, 2014 #OFADevWorkshop
![Page 6: Lustre* Filesystem Doug Oucharek Intel ® High Performance Data Division * Some names and brands may be claimed as the property of others](https://reader036.vdocuments.us/reader036/viewer/2022082413/56649f535503460f94c77b31/html5/thumbnails/6.jpg)
6
What LNet Needs Going Forward• Reliable Datagram
– No order preservation required– Small max size (e.g. 1k)– Receivers are guaranteed eager– Senders will adhere to injections limits– Network only drops datagrams on transmission failure (dead peer, broken
link), not on congestion
• RMA– PUT & GET– Passive side buffers guaranteed pre-registered (network may discard if no
match)– 1k <= size <= sensible max (e.g. 1MB)
• High Priority Messages for Health Network– Vastly reduced injection rate– These messages come before anything else in all devices (i.e. switches)
March 30 – April 2, 2014 #OFADevWorkshop
![Page 7: Lustre* Filesystem Doug Oucharek Intel ® High Performance Data Division * Some names and brands may be claimed as the property of others](https://reader036.vdocuments.us/reader036/viewer/2022082413/56649f535503460f94c77b31/html5/thumbnails/7.jpg)
#OFADevWorkshop
Thank You