Reflections Of The Void: sdn

Showing posts with label sdn. Show all posts

Monday, October 17, 2016

Tardis 2.0 : MIT people are back with optimized and extended version of their novel cache system.
FPGA TCP/IP stack : TCP/IP stack that can be embedded on FPGA along applications, this allow seamless flow of data without CPU interaction or reliance on other devices. You could do some neat in line processing of data flow using this. It support 10 Gbps and thousands of concurrent connections. [github]
Knowledge-Defined Networking : merging network analytics and software defined network by using machine learning. The objective is to enable automated network control. To some extend we should replace the software is eating the world mantra with Machine learning is eating software one. And closer than you think at least for SDN as there is an effort in Open daylight by Cisco and al. to push machine learning in the SDN framework.

SOFORT : The authors propose to modify traditional In memory database architecture in order to optimise its operation for upcoming storage class memory hardware. The idea is quite simple, get rid of the log mechanism and persist all data to NVM except for the index which needs to be maintained in RAM for performance requirement. SCM allow to drastically eliminate a lot of boiler plate architecture functionality by delivering fast byte addressable persistent storage. However, now the developers needs to be aware of the transnational model imposed by this new class of persistent memories. [Slides]
Instant Recovery for Main-Memory Databases : This paper build on top of SOFORT and looks at leveraging NVDIMM or SCM for speeding up crash recovery features. The idea is not only speed up the normal operation but also eliminate the recovery cost in case of application crash [Slides]
Note that both these paper have an author working for SAP, so my guess that we will start to see new dedicated feature in SAP Hana for supporting SCM.

Flowtune : It seems that we are going to see slowly a return of the ATM model in data-center for networking fabric. In this paper the author propose to combine a form of MPLS system with a centralized allocator for resources management and congestion avoidance. Basically the system identify connection ( called flowlet ) establishment and end . Using the existing and past information it derive an optimal path and resources allocation minimizing interference and congestion over the lifetime of the flowlet. Looks like SDN is finally enabling a simplified and more robust ATM model within and probably across data-centers.

Technologies for Testing Distributed Systems : testing distributed system is hard, and unit testing do not really cut it when it come to byzantine fault..
ONOS : Open Network Operating System (ONOS) is a software defined networking (SDN) OS
WrAP : Hardware and Software Support for Atomic Persistence in Storage Class Memory

Best Papers : Best Paper Awards in Computer Science (since 1996)
Linux Internals : very good ebooks on the internal of linux kernel from boot to memory
SDN Internet Router [part2] : a very impressive demonstration of the implication of the SDN technology for company. It allowed spotify to replace routers that would have cost 1/2 $M each with a couple of SDN switches.

Purpose-built Global Network : How google moved to SDN and its implications.
Qcware : quantum computing cloud
Logging, Monitoring, Alerting : openstack LMA stack . What i am not sure about is the scalability of the approach.

Today's links 18/09/2014: #KVM HA , #SDN , #HPC SSH

COLO : RFC #KVM : COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service enabling HA / FT for Qemu-KVM
Software-Defined Networking: A Comprehensive Survey : Everything you need to know about SDN
HPN-SSH High Performance SSH/SCP