LHCONE R&D and RNT-WG call

Tuesday 4 Jun 2024, 17:00 → 18:00 Europe/Zurich

Edoardo Martelli (CERN), Joe Mambretti (International Center for Advanced Internet Research Northwestern University), Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))

Presents: Bill Johnston, Edoardo Martelli, Christopher Walker , Asif Shah. Tim Chown, Edoardo Martelli, Luca Bassi, Asif Shan, Bruno Hoeft, Marian Babik, Joe Mambretti. Tom Lehman, Triistan Sullicam. Phil Demar, Yatish Kumar, Vitali Kondraenko, Harvey Newman, Jim Chen


Next LHCOPN/ONE meeting
- Confirmed dates on 9-10 of October 2024
- Agenda: https://indico.cern.ch/event/1410638/
- Workshop on perfsonar and SciTags on Thursday afternoon
- Free slot for another workshop on Friday morning. Bruno suggests a workshop on  IPv6 development
- Suggested that in the registrion form people can indicate if they will partiipate to the workshops.


SC24
- NRE for Scitags have been submitted. 
- Starlight is working on the provision of the connectivity to the the venue. There will be lot of Tbps going to the show floor. 
- Bill Johnston will work on map 
- CERN doesn't have any 400G server, so it cannot contribute a DTN for SC24. 
- Harvey has asked ESnet to send a couple of 400G Gen5 servers to CERN. Tom Lehamn is looking into it. CERN can take care of the installation and cabling at CERN. 
- Edoardo to ask SURF if they plan to install 400G a DTN at CERN 
- Joe asks if Yatish can collect data with the Hi-touch system. Yatish says it is possible, as long as it cross the ESnet production network. 
- Yatish says that from the data collected during DC24, there was just 50 flows every 1 million that had anomalies in the sequence number (i.e.retransmissions), so the network was pretty good. On the other hand, it was odd to realize that most of the flow were running at 100Mbps (very slow). 
- If we improve the speed of the single flow, we will improve the whole throughput of the system. 
- Chris: it may be interesting to see with Hi-Touch if the transfer are so slow even in normal times outside DC24. 


Next meeting 18th of June 

17:00 → 17:20 LHCONE

17:20 → 17:50 RNTWG

17:50 → 17:55 AOB

17:55 → 18:00 Next meeting