Time & date
Wednesday 5 December 2013 8:00pm Pacific Standard Time, Thursday December 6 2013 9:00am Pakistan time, Thursday 6 December 2013 noon Malaysian time, Thursday 6 December October 2013 01:00am Rio Standard Time.
Attendees
Invitees: Anjum-, Kashif, Raja, Johari, Nara, Abdullah, Badrul, Hanan, Saqib, Adib, Les+, Renan, Bebo
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- Responded but Unable to attend:
- Actual attendees:
Administration
- Do we need to add anyone else to the weekly meetings, e.g. Hossein Javedani of UTM (or maybe Saqib or Hanan can cover for him).
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- A task/process flow writing all java classes involved on all those batch jobs;
- A Javadoc <http://www.oracle.com/technetwork/java/javase/documentation/index-jsp-135444.html> which will explain all classes and how they are used.
UNIMAS
The pinger2 (Raspberry Pi) unit is down and Johari took it back to the faculty for troubleshooting. He found a corrupted sd card, unable to retrieve data from previous installation. He decided to switch to a larger capacity, 16GB SDHC CLass 4 card. Currently running in private network for at least another 1 week to test for stability before moving the unit back to the computer centre for redeployment
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- Looking at the PingER results for QIUP seen from UM & UTM we see it is ~ 2ms from from UM and 15ms from UTM. Tulip has problems with it in that target is not responding to tier 1 landmarks.
- Allianze is 2 ms from UM and 14ms from UTM. The TULIP CBG algorithm did not converge (does not have 3 landmarks overlapping).
- This still does not explain why the directivity for UM for these two targets is > 1, e.g.
- Allianze from UM has a directivity > 2 for a min-RTT of ~ 1.2ms.
- Distance as crow flies between pinger.fsktm.um.edu.my and www.allianzeunicollege.edu.my = 298.4 km. or a minimum RTT (as constrained by speed of light in fibre) = 2.984 msec.
- Maybe they have a proxy closer to Kuala Lumpur
UM
- Badrul has an undergraduate student (Abdulrahim Haroun Ali) looking at anomalies in ping measurements. Les and the undergraduate student have corresponded concerning how to access the PingER data Sept 25-27. They are currently working on it and plan to have a paper by January 2014. They will need help to vet the paper later.
- MD NOR RIDZUAN BIN DAUD of UM is interested in analytics with Big Data for PingER. Renan has sent documentation and is in contact with Md. Md plans to to look at analytics of clustering correlation in PingER data. He will get the data from pingtable.pl. He will try a small amount of data first and extend to more data later. Seehttps://confluence.slac.stanford.edu/display/IEPM/PingER+Big+Data+Analytics+proposal.
NUST
Raja found the following appear Pakistani landmarks appear to be giving socket permission errors (these are the ones that weren't problematic before) .
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Johari asked whether the NUST PingER data archive goes back to 1998. Perhaps Anjum or Kashif could assist with the answer to this.
TULIP - Raja
The new beta test TULIP site is up and running. It is at: http://www.slac.stanford.edu/comp/net/tulip/. Raja has made great progress in speeding it up. The main problem was that the parallel tasks were not working right. He has incorporated the tiering and optimized the choice of tier 0 landmarks. He has also got the laundering working so now we can properly disable landmarks that are not responding and add disabled landmarks that are responding. This, together with looking at the perfSONAR site for landmarks, has increased the number of landmarks. There are now 55 PingER active landmarks, 59 perfSONAR and 79 PlanetLabs active landmarks.
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As Asad's work on TULIP begins to go into testing he will be engaging more with Renan and Linked Open Data. Asad will send email to Renan.
PingER at SLAC
- Working with Bangladesh to set up a monitoring site at Jahangirnagar University Dhakar. Letter of invitation has been sent. Les requested an update from Bangladesh 8/13/2013. They responded that they are having a delay getting an IP address. M Wahid (of UM) has sent email to Faziul Karim of Jahangirnagar University requesting an update (9/17/2013, 11/2/2013)
- We are also working with MIMOS (see https://confluence.slac.stanford.edu/display/IEPM/20130810+Meeting+with+Dickson+Lukose+of+MIMOS) to get hosts and landmarks. They are in the midst of a discussion. Hope to have something to report by September 8th. Sent email reminders 9/17/2013, 9/27/2013, 11/2/2013
- Adib at UUM is waiting on the computer centre director to appoint one staff to be with us during the installation and configuration. They cannot do it without their supervision to avoid any issue in the future. 9/27/2013, sent reminder 11/2/2013.
- Zakaria of Zayed university in Dubai copied Prof. Wathiq Mansoor of the American University in Dubai. Wathiq responded with interest, Les sent him information (basically http://www-iepm.slac.stanford.edu/pinger/letters/invite-monitor.doc). However the site does not appear to respond to pings. Les has not heard anything back from Wathig after informing him of the ping situation. Reminder sent 11/2/2013.
Old Items
For the Linked Open Data / RDF which is in pre-alpha days, you can go to http://pingerlod.slac.stanford.edu. As can be seen this page is not ready for prime time. However the demos work as long as one carefully elects what to look at:
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There was interest in TULIP from Mridul Jain <mridul@yahoo-inc.com>and the Senior Architect in Yahoo! R&D Software Dev in Bangalore, India. He pointed to an interesting paper on Geolocation using CBG and then finding hosts in the area and getting their area codes and using a virtual landmarks making traceroutes. The paper is at https://www.usenix.org/legacy/event/nsdi11/tech/full_papers/Wang_Yong.pdf. He wants something to use in production, however I do not think we are ready.
Potential projects
Future meeting - Les
Next meeting Wednesday 8 January 2014 8:00pm Pacific Standard Time, Thursday 9 January 2014 9:00am Pakistan time, 9 January 2014 noon Malaysian time, Thursday 9 January 2014 01:00am Rio Standard Time.