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More at WLCG Transfers Dashboard

LHCOPN - LHC Optical Private Network

LHCOPN is the network for the T0-T1 data transfer.


esNET (now includes USLHCNet) provides transatlantic connections of the Tier1 computing facilities at Fermilab and Brookhaven with the Tier0 and Tier1 facilities at CERN as well as Tier1s elsewhere in Europe and Asia.


GÉANT is the pan-European data network dedicated to the research and education community. Together with Europe's national research networks, GÉANT connects 40 million users in over 8,000 institutions across 40 countries.


The objective of LHCONE is to provide a collection of access locations that are effectively entry points into a network that is private to the LHC T1/2/3 sites.


The Advanced Resource Connector (ARC) middleware integrates computing resources (usually, computing clusters managed by a batch system or standalone workstations) and storage facilities, making them available via a secure common Grid layer.

EMI - European Middleware Initiative

EMI is a collaboration of the three major middleware providers in Europe, ARC, gLite and UNICORE, and other consortia. It aims to deliver a consolidated set of middleware components for deployment in EGI, PRACE and other DCIs; extend the interoperability between grids and other computing infrastructures; strengthen the reliability of the services; and establish a sustainable model to maintain and evolve the middleware, fulfilling the requirements of the user communities.

Globus Toolkit

The Globus Toolkit is a fundamental enabling technology for building grids that allow distributed computing power, storage resources, scientific instruments, and other tools to be shared securely across corporate, institutional, and geographic boundaries.

Virtual Data Toolkit

The Virtual Data Toolkit (VDT) is an ensemble of distributed computing software that can be easily installed and configured. The goal is to make it as easy as possible for users to deploy, maintain and use distributed computing software. The VDT is a product of the Open Science Grid (OSG), which uses the VDT as its software distribution.

EGI accounting portal

The accounting infrastructure is a complex system that involves various sensors in different regions, all publishing data to a central repository. The data is processed, summarized and displayed in the accounting portal, which acts as a common interface to the different accounting record providers and presents a homogeneous view of the data gathered and a user-friendly access to understanding resource utilization.


HS06 stands for HEP-SPEC 2006 which is a standard across WLCG to express processing power, in the same way as Terabytes express storage capacity.
You can get more information if necessary at:

Gratia Accounting

The Gratia Project (contributed as an OSG Activity) designs and deploys robust, scalable, trustable and dependable grid accounting and auditing services, publishes an interface to the services and provides a reference implementation.

Experiment Dashboards

The Dashboard project for LHC experiments aims to provide a single entry point to the monitoring data collected from the distributed computing systems of the LHC virtual organization.

Dashboard Google Earth

This application provides a nice visualization of the WLCG grid activity. It shows graphically information covering data movement for both montecarlo production and tier0 export, and additional information about running jobs on the ATLAS, CMS, LHCb and Alice (jobs only) grids.

Grid projects
EGI - European Grid Initiative

The European Grid Infrastructure (EGI) enables access to computing resources for European scientists and researchers from all fields of science, from High Energy Physics to Humanities.

OpenScience Grid

The OSG in the United States is a multi-disciplinary partnership to federate local, regional, community and national cyberinfrastructures to meet the needs of research and academic communities at all scales.

Nordic e-Infrastructure Collaboration (NeIC)

NeIC (Nordic e-Infrastructure Collaboration) is a collaboration between the Nordic countries to facilitate the development of e-Infrastructure solutions for Nordic research communities.

Operations Portal
EGI operations portal

This Portal is the office web application for operations within the EGI Project.

OSG Operations/Grid Operations Center

Based at Indiana University, the Grid Operations Center provides a single point of operational support for the Open Science Grid (OSG).

LHC vistars

Dashboards for Large Hadron Collider coordination and status.


The Service Availability Monitoring (SAM) system is used to monitor the resources within the production infrastructure. SAM monitoring data is used for calculation of availability and reliability of grid sites. This is the SAM public page, it gathers information related to the SAM system useful for WLCG users, site administrators, developers, and support units.

LHCOPN network weathermaps

Monitoring and recording the amount of network traffic on key infrastructure points. This information is collected and processed to reveal baselines and trends in threshold variations and are presented as high-level overviews intended for problem management and planning.


information systems

GOCDB is the official repository for storing and presenting EGI topology and resources information.



REBUS is the Resource, Balance and Usage website for the whole of WLCG, including topology information, resource pledges, and installed capacities.


MyOSG is web-site that provides a single place for most things related to the OSG including topology information, resource/service availablity/reliability information, current resource status, accounting information, etc.

WLCG Document Repository

All WLCG reporting (accounting, reliability) documentation.


GGUS (Global Grid User Support) is the primary channel of requesting support when using the grid.