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Brian`s Twiki documentation staging area CMSSW I/O Activities The following are notes from each CMSSW I/O project I`ve undertaken: CmsIOWork Patches to CMSSW...
OrganisationName: DESY OrganisationURL: http://www.desy.de Country: Germany My Links CMS Integration Project Distributed Services CMS...
CMSSW Generic File Monitoring This twiki is now maintained here : https://twiki.cern.ch/twiki/bin/view/Main/GenericFileMonitoring Please refer to this page...
CMS Requirements for CVMFS, Frontier and Xrootd Here is a list of CMS requirements/recommendations for the services to be deployed by the end of this year (2012)...
Top Issues in ROOT and CMSSW I/O These refer to pure I/O, and ignore the issues in the serialization/deserialization of CMS data structures. 1 Raw TTreeCache: For...
Potential Issues Observed with Xrootd This page keeps a laundry list of potential issues with Xrootd. I have tried to keep this in order of importance: 1 Namespace...
AAA Scale Testing in Europe and in the US Introduction The test suite is provided by US team. EU and US sites use a variety of storage systems (dcache, dpm, storm...
Framework Tests for the Xrootd Demonstrator Applications used. The CmsXrootdTestsApplications page documents the different applications used. Results Experiences...
Configuring Fallback Access Fallback access allows CMSSW to retry opening a file from a different location if the primary source fails. This is present in all versions...
Joining a dCache based SE to the Xrootd service. This document covers joining a dCache based storage element to the CMS Xrootd service based on the redirector xrootd...
Joining a dCache based SE to the Xrootd service. This document covers joining a dCache based storage element to the CMS Xrootd service based on the redirector xrootd...
Joining a dCache based SE to the Xrootd service. This document covers joining a dCache based storage element to the CMS Xrootd storage federation (AAA). This page...
CMSSW Generic File Monitoring Starting with CMSSW 6 1 0, the Xrootd file close monitoring has been implemented as a CMSSW framework service. This allows for applications...
Joining a HDFS based SE to the Xrootd service. This document covers joining the USCMS Xrootd service based on the redirector xrootd itb.unl.edu for HDFS sites....
Joining a POSIX based cluster to the Xrootd service. This document covers joining a POSIX based filesystem (Lustre, GPFS, NFS, etc) the USCMS Xrootd service based...
Redirectors (site managers) subscription overview AAA Make accessible Any data from the existing distributed CMS data cache to scientists Anywhere , Anytime...
USCMS T3 Xrootd Architecture This page describes a specialized deploy of Xrootd for USCMS T3 sites. The goal of this configuration is to allow the T3 site run without...
TWeeder info for Main Total Number of topics: 24954 92 Topics updated during the last 7 days Days Web Topic Date S7 Main PPHighMult...
Accounting and Monitoring of the CMS Xrootd Service Accounting in the CMS Xrootd service is handled by Gratia and monitoring is currently handled using UDP packets...
Planning your Xrootd Hardware Deploy As Xrootd is meant to be a perturbation of the total site storage usage, the hardware requirements are small compared to deploying...
Monitoring Tests for Xrootd Infrastructure Nagios Monitoring Heartbeat Tests These tests verify minimal functionality by reading out tiny amounts of data out of a...
Enable HTTP protocol for XRootD Configuration The xrootd daemon can export both the xrootd protocol and the https protocol; this page covers the configuration...
Xrootd Production and Integration The xrootd data access system is oriented for the end user and we are concerned with maintaining a satisfactory end user experience...
1a. Igor Document expected scale and test at 2x scale. File open rate # connections rate MB/s Detailed assumptions: One client: 10 Hz evt/sec...
Progress Report, 2 February 2011 Infrastructure Status Integration sites: UCSD, FNAL, Purdue, Wisconsin UCSD passing all monitoring. Purdue passes...
Infrastructure Status No new sites this week. UCSD, Caltech, Nebraska, Wisconsin, Purdue have all tests functional. Stability issues at Purdue and Wisconsin...
Infrastructure Status Monitoring has a hole in it: test proxy expired locally due to a site DNS change. Shouldn`t reoccur. UCSD has transitioned from ITB...
Infrastructure Status: Mostly stable two weeks at Nebraska, Caltech, UCSD. dCache sites (Wisconsin and Purdue) had a poor week in the heartbeat tests. It...
Infrastructure Status dCache sites have stabilized. I think we`re ready for Purdue and Wisconsin to enter production. Any objections? Action Item Status...
Progress Report for 27 April 2011 Infrastructure Status Most sites stable. Was happy to see that Xrootd Nagios monitoring did `see` the UCSD network outage...
Meeting Notes Infrastructure Production redirector will be upgraded to Xrootd 3.1 this week. Vanderbilt fallback in place UCSD issues corrupted...
Meeting Notes Infrastructure UCSD is switching to RPM and adding many more grid worker nodes as xrootd servers. A few servers will remain on more advanced versions...
Meeting Notes Attending: KB, BB, MT, DB, LB Infrastructure Notes: Some unknown hiccup out there causing about a 5% error rate. Under investigation. UFL...
Infrastructure: FNAL: Had some downtime due xrootd being off on one data server. Caused clients to get dreaded 84 error. Monitoring had downtime due to expired...
Notes: Infrastructure: FNAL has been having issues. Some failures, some low CPU efficiency jobs. Vanderbilt had an extended downtime. MIT has...
Infrastructure: Nagios is passing now Nebraska network outage that knocked local data servers, not the redirector UCSD issues w/ CA on uaf 6? Came...
Meeting Notes Infrastructure Fairly quiet 2 weeks on the ranch. No major outages, but not a large set of overflow jobs either. MIT has updated to the...
Infrastructure: Infrastructure looks good, few errors. Monitoring: MIT needs to finish upgrading servers. xrootd5 should work, but in meeting tests...
Working Page!!! Pre References Here some more details conerning Xrootd in general and how to integrate this with D Cache are described CmsXrootdArchitecture...
NOTE: For dCache sites using the dCache native xrootd door, a special plugin is currently available to integrate with the TFC; however, this is not distributed with...
Throttling Xrootd Xrootd provides new capabilities to CMS end users. They have a simpler, lower latency mechanism to access sites directly. While this is a fantastic...
Goals and Deliverables 1 Xrootd infrastructure: 1 Fallback usage: Ability for a reasonably small subset of jobs at a T2 site to run on remote data via the global...
Number of topics: 42

 
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