There have been several clusters in operation in the past, dedicated to specific projects.
NHPC
In operation from april 2011 to december 2015. It was a pilot initiative to understand the organizational and technical challenges of joint procurement, administration and operation of computational infrastructure for science.
Bjólfur
In operation from 2004 to xxxx
Nanó
In operation from 2000 to xxxx
Sól
In operation from xxxx to xxxx