SYMBIOTIC ROUTING IN FUTURE DATA CENTER 工科三

陳泰穎

Outline1. CamCube

1. Traditional data center2. The problems3. CamCube philosophy4. Feature5. What’s different?

2. Symbiotic Routing1. Service

1. TCP/IP2. VM distribution service3. Cache service4. Aggregation service

2. Properties3. Conclusion

1. CamCube – the Goal Design a data center from the perspective

of a distributed systems builder

1.1 Traditional Data Center Distributed system philosophy vs. reality

1.2 The Problems ( of the traditional data center)

Addressing Bandwidth Server has little or no control over

network

1.3 ComCube Philosophy No Swiches Topology: 3D Torus

1.3 CamCube Philosophy – why? The CamCube API

(x,y,z) coordinate Coordinate easily remapped

in case of failure 1-hop API (send/recv from

1-hop neighbors)

1.4 feature Two types of networks:

Dierect-connect for intra-server traffic Switched network for inter-camcube traffic

Multiple independent network can be used

What’s different? High Performance Computing

CamCube make topology explicit Service can intercept(modify) packet on path Failure resilience Multiple independent service

Distributed System Key-space naturally mapped physically

Networking No switches/routers (symmetry of role) Not using TCP/IP

2. Symbiotic Routing Symbiotic Routing is coupled with

CamCube because: Each server link to other server closer Each server plays a role of switch/router too Each server share the resourse

(memory/FS)

2.1 TCP/IP Service Required to implement TCP/IP for

existing service CamCube use its own method to

enhance performance

2.2 VM distribution Service Traditional: may create high number of

interior server and edges (of tree of file system) than necessary.

New approach with CamCube: Use its topology feature. The custom routing protocol is

hierarchical, recursively dividing the coordinate space into 3D mini-cubes.

2.3 Cache service Traditional remote cache Here Llcal cache

Not local cache

2.4 Aggregation Don’t have to do traverse Use 3D topology feature (ex. X->y->z)

2.5 Properties Key to server mapping Path specification (x,y,z) Fault-tolerance Multipath Packet buffers Prioritization

3. Conclusion Symbiotic Routing is coupled with

CamCube-like Infrastructure This routing method provide flexible

implement of service (protocol) Support in-network packet processing CamCube + API(this routing method) =

easy-built data center

Comment Challenge

If service goes inner the CamCube, chances may be multi-hop network.

Beyond network efficiency, what’s else can we benefit from CamCube ? High level switch/router is costly The energy saves by remove switch/router

Make better use of energy consumption in computation

Thank you