XCache DevOps Meeting Jan 21, 2021

Thursday 21 Jan 2021, 13:00 → 14:00 US/Central

Derek Weitzel (University of Nebraska - Lincoln), Marian Zvada (US CMS)

Time: 11AM PT/1PM CT/2PM ET/8PM CET
Where: ZOOM.US

Join from PC, Mac, Linux, iOS or Android: https://unl.zoom.us/j/651969661
Meeting is password-protected: ask #xcache slack channel or xcache@opensciencegrid.org

Or iPhone one-tap :
    US: +16699006833,,651969661#  or +14086380968,,651969661#
Or Telephone:
    Dial(for higher quality, dial a number based on your current location):
        US: +1 669 900 6833  or +1 408 638 0968  or +1 646 876 9923
    Meeting ID: 651 969 661
    International numbers available: https://unl.zoom.us/zoomconference?m=wxCNSgMZiA-cVKSNowGYlQ

Attendees: Marian, Derek, Diego, Matevz, Andy, Edgar, JohnH, Matevz, Matyas, Ilija

News
----
* CHEP papers? We don't seem to have candicate paper for submission this time from xcache group
* OSG AHM virtual soon

XRootD development for XCache
-----------------------------
* still sorting out missing one piece that holds new RC for SciTokens
* working version of 5.1.0 RC5 ready, ~week or more for the release

XCache issues
-------------
* multi-stream TPC issue (github #1379) - devs don't understand what is going there, need somebody who understand what going on because the core code didn't change, curl is complaining in mystic way when going multi-stream. Trace through it would help, gdb with breakpoints would be appreciated.

ATLAS XCache deployment
-----------------------
* all changed made for image are fine, v5.1.0 RC4 on two instances also doing well
* will upgrade rest of SLATE federation in a few days with v5.1.0 RC4 if things remain stable
* want to test performance

CMS XCache deployment
---------------------
* no news
* discussion about multi-user and checksums issue (Diego), hadoop related

OSG StashCache deployment
-------------------------
* waiting for the fix with multi-stream
* need to make config changes in SciTokens (++ notations), Andy will reflect change in README
* Amsterdam cache no news (SurfNet), some issues with transport from the dock

XRootD transfers monitoring
---------------------------
* progress ongoing for the accounting (Derek, Diego)

AOB
---
* Riccardo: no news for XCache at CERN

13:00 → 13:05 News

Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Mr Marian Zvada (US CMS)

13:05 → 13:10 XRootD development for XCache

General status of development, XRootD releases with new cache features, bug fixes, etc...

Conveners: Mr Andrew Hanushevsky (SLAC National Accelerator Laboratory), Matevz Tadel (UCSD), Wei Yang (SLAC)

13:10 → 13:15 XCache issues

XCache issues experienced during the deployment, configuration or otherwise causing problems in production or development.

13:15 → 13:20 ATLAS XCache deployment

Conveners: Dr Ilija Vukotic (LAL), Wei Yang (SLAC)

13:20 → 13:25 CMS XCache deployment

Conveners: Diego Ciangottini (Universita e INFN, Perugia (IT)), Mr Edgar Fajardo Hernandez (UCSD), Prof. Frank Wuerthwein (UCSD)

13:25 → 13:35 OSG StashCache deployment

Status of OSG deployment, origin/caches operations, stashcp, usage, etc...

Conveners: Brian Bockelman, Brian Lin (University of Wisconsin-Madison), Dr Derek Weitzel (University of Nebraska - Lincoln), Mr Edgar Fajardo Hernandez (UCSD), John Hicks (Internet2), Mr John Thiltges (University of Nebraska - Lincoln), Mr Marian Zvada (US CMS), Mr Matyas Selmeci (University of Wisconsin-Madison)

13:35 → 13:40 XRootD transfers monitoring

Conveners: Dr Derek Weitzel (University of Nebraska - Lincoln), Diego Davila (CMS), Mr Edgar Fajardo Hernandez (UCSD)

13:40 → 13:45 AOB