Hi everyone,just came back from holidays. This is fantastic news, and a big thank you to the people who invested so much of their time.
I'm really excited to try out the new algorithm for ATLAS. Cheers, Mario On 25/07/2022 04:41, Harvey Newman wrote:
That's great to hear Richard. And great thanks to the team. http: we should see that a modern version of http gets into components of XrootD.... Best regards Harvey On 7/24/2022 6:54 PM, Y. Richard Yang wrote:Hi Mihai, Steve, Mario, all,This is an update on the IETF hackathon which just finished today (July 24) in Philadelphia, PA. Mahdi presented the results to the whole hackathon audience at slightly over 2 pm on behalf of the team. The initial integration of ALTO and FTS and the zero-order algorithm are fully functional (at least in the concurrent setting).This excellent progress is the result of hard work that takes a village; Jensen stayed up 24 hours non-stop until 2 pm to finish up the FTS production code integration framework, Mahdi was sleeping only 4 hours per day in consecutive days to implement the full zero-order gradient algorithm, Kai and his team made great progress on implementing openalto with both standard features (path vector) and next step features (FCS), and the team worked under the great organization of Jordi. We plan to do some more demos and socials tomorrow (Monday) at the IETF Happy Hour to try to get more IETF feedback. The working slides are at: https://docs.google.com/presentation/d/1CcCMvZ_SeWLRAN32Qz8RFcHrF8spAu_6/edit?usp=sharing&ouid=110882839032059047983&rtpof=true&sd=true <https://docs.google.com/presentation/d/1CcCMvZ_SeWLRAN32Qz8RFcHrF8spAu_6/edit?usp=sharing&ouid=110882839032059047983&rtpof=true&sd=true>As soon as the IETF this week is over, we will schedule an overall group meeting to go over the technical details, and plan for the next steps. I consider HTTP a great example of a hugely successful collaboration between the networking community (IETF) and the data sciences (CERN). Let's use this project to promote collaboration between these two communities again.Cheers, Richard for the teamOn Thu, Jul 21, 2022 at 4:08 AM Mihai Patrascoiu <mihai.patrasc...@cern.ch> wrote:Hello Richard, I'll summarize my answers from the other thread. Unfortunately, due to other arrangements, we won't be able to attend the hackathon this weekend. However, we are very excited about the proposed objectives. We already established a way for the FTS Optimizer zero-order algorithm to make it's way into production. Once the feature is ready, with the help of Mario, we can organize a large-scale test and compare the results we get in production with the simulated results. On further ALTO and FTS integration, one aspect I see particularly promising is: 1. Use ALTO information to assess the network capability of a given RSE 2. Set a maximum limit for how much network percentage FTS can occupy. In a feedback loop via ALTO, FTS would find whether it may increase or should decrease traffic involving that RSE This maps directly to what we see in production: FTS can hit some sites too hard. Any extra knowledge FTS gets on this aspect would allow it to improve. Best Regards, Mihai for the FTS teamOn 20/07/2022 03:58 Y. Richard Yang <y...@cs.yale.edu> wrote: Hi all, During the weekly ALTO meeting today, we discussed the coming hackathon and Qin suggested that we send an update to the mailing list on the FTS+ALTO project, and here is the update: - In short, if you want to work on ALTO integration with production, open projects, this can be a wonderful project to work on: it may help both ALTO (in terms of its crucial deployment mandate) and the largest data-intensive science projects at CERN. Specifically: - For those who have not tracked the hackathon, as Jordi said, it is a continuation of the 113 Hackathon. In particular, the 113 Hackathon focused on the integration with Rucio, which is a wonderfully designed tool used widely in CERN and some other projects for data movement of a large amount of data (PB -> EB). In 113, the hackathon modified the manual workflow, which is the workflow to select the source to download a dataset when a client issues a download command. The other workflow of Rucio is the automatic workflow, which selects the sources and destinations to realize user-specified replication rules. In our original plan, 114 would focus on the automatic workflow. However, the team realized that Rucio is built on top of FTS, which is the main tool used at CERN to schedule which transfer is scheduled at what time, where Rucio is at a higher layer providing the transfers for FTS to schedule. - The 114 hackathon includes 2 objectives: (1) introducing resource control to FTS, and (2) evaluating an alternative design of FTS core: the FTS Optimizer. Hence, the work includes 3 components, integrating the FTS production code and framework: (1/basic) allow FTS to specify resource control goal and use ALTO to map FTS control state (called links in FTS, where a link is a pair consisting of a source node to a destination node, where a node is called RSE) to network state; (2/basic) implement a full zero-order algorithm, to achieve fully efficient, zero-order gradient control as FTS Optimizer; (3/stretch) realize a composition framework to compose end-to-end resource performance function, including both zero-order and first-order gradient, covering the bottleneck structure. The project is exciting both in terms of its technical content and also in terms of its potential impacts. The hackathon project will work under the guidance of the Rucio project lead (Dr. Mario Lassnig) and the FTS project lead (Mihai Patrascoiu and Steven Murray); all cc'd in this email. This can be a wonderful opportunity for IETF, the networked systems community and the data-intensive sciences communities to work together. Please feel free to reach out to us (Jordi, Mahdi and me) if you want to join the hackathon or later. Thanks, Richard on behalf of the IETF 114 ALTO+FTS Hackathon Team On Tue, Jul 12, 2022 at 1:14 AM Jordi Ros Giralt <j...@qti.qualcomm.com> wrote: Hi all, I have uploaded to the IETF Hackathon Wiki the project description for ALTO. The proposed project is a natural evolution from the work done during the 113 Hackathon. I want to also thank and credit Jensen for providing the initial plan for the Hackathon. https://trac.ietf.org/trac/ietf/meeting/wiki/114hackathon You will also see that in addition to the ALTO hackathon, Ziyang will be leading a second project under the name "The SDN-based MPTCP-aware and MPQUIC-aware Transmission Control Model using ALTO". Many thanks Ziyang for leading this very interesting project too. Jordi On behalf of ALTO Hackathon group _______________________________________________ alto mailing list alto@ietf.org https://www.ietf.org/mailman/listinfo/alto
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