SC11 poster HLRmonitor (1)

A. Cristofori1, E. Fattibene1, L. Gaido2, P. Veronesi1 - INFN-CNAF Bologna (Italy)1, INFN-Torino Torino (Italy)2 - />
Distributed
Grid
Accounting
System

HLRmon accounting portal

The accounting layout

Architecture

DGAS (Distributed Grid Accounting System) sensors collect accounting
information at site level.
Site data are sent to site or multi-site HLRs (Home Location Registers).
A top level HLR receives accounting data from all the Grid HLRs.
HLRmon retrieves data from the top level HLR and presents them through a
web interface. Aggregated data are also sent to the central EGI Accounting
Portal.
HLRmon is successfully deployed as accounting portal for IGI and other Grid
projects/NGIs (National Grid Initiatives) using DGAS as accounting system.

Collectors retrieve:
 aggregated CPU accounting information from a desired HLR
 storage accounting data by probes running on the SRM instances at
WLCG sites
 values of some GLUE attributes about the computing power capacity of
the WLCG sites
An aggregation layer is responsible for the data manipulation to produce
charts and tabular reports visualized by the graphical interface.
Data aggregated per Grid user are directly retrieved from the HLR database

at run-time and are just accessible by authorized users.

General purpose CPU reports
Different metrics to analyze:
• CPU and Wall Clock Time, expressed in days
and normalized on the mean power capacity of
the site
• Number of executed jobs
• Job efficiency in terms of (CPU Time / Wall Time)
ratio

An advanced selection menu permits to
choose a desired subgroup of values for
each aggregation key.
A specific view with data grouped per
discipline is provided: the mapping
information between VOs and disciplines
is currently retrieved from the EGI
Operations Portal.

Different keys of data aggregation:
• Site
• Virtual Organization
• VOMS group and role
• Certification Authority and
Registration Authority
• Job type (Grid or local)
• Grid user DN

WLCG reports

Storage reports

The charts allow the analysis of CPU and storage resources usage at the
WLCG Tier1 and Tier2 by the LHC experiments, over the last month and the
last year.
The resource usage and the amount of pledged resources are compared.
Accounting data are grouped by site and by VO.
Storage data are taken by a script running on the sites and sent to HLRmon via
email.

Non-standard schema is used to generate records (no standard schema
exists).
The information on the used space is collected from the BDII once a day.
Storage URs (Usage Records) are stored on the HLR server as the computing
URs.
HLRmon is able to retrieve storage information directly from the desired HLR.
The portal shows the daily disk consumption in terms of used space.
Data are aggregated per site, SE and Storage Area (SA).
Used space will be compared to the total available space (at SA, SE and site
level).
Used space per site
Used space per site per day

Used space per SA
Used per SA per day