In December 2004 the Canadian GridX1 project joined forces with the world's largest international Grid project, the LHC Computing Grid (LCG). GridX1 makes the computing facilities at several Canadian research institutes appear as one resource in the LCG.

GridX1 interfaces with LCG through a centre at the Tri-University Meson Facility (TRIUMF) in Vancouver. Computers monitor and control jobs that are sent to the Canadian Grid, and can thus advertise the availability of the combined GridX1 resources. The details of the resources are hidden behind the interface layer, and only the interface machine needs to have the latest LCG release. This simplifies the management of the shared Canadian facilities; it also means that generic middleware can be used on the national Grid, and interference with other disciplines is minimized.

GridX1 is one of the first large research computing Grids in Canada and brings together researchers from the universities of Alberta, Calgary, Simon Fraser and Victoria, and from the National Research Council in Ottawa, TRIUMF, and CANARIE (Canada's advanced Internet development organization).

Canadian researchers are playing a key role in the ATLAS experiment at the LHC, and GridX1 played an important part in the ATLAS Data Challenge 2 in 2004. In the past nine months more than 3000 ATLAS jobs have run successfully on GridX1.

Compiled by Hannelore Hämmerle and Nicole Crémel