The Cray XT4 Quad-core : A First Look
Sadaf R. Alam, Richard Frederick Barrett, Markus Eisenbach, Mark R. Fahey, Rebecca J. Hartman-Baker, Jeffery A Kuehn, Stephen Poole, Ramanan Sankaran, Patrick H Worley · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2008
The Cray XT4 at Oak Ridge National Laboratory (ORNL), named Jaguar, has recently been up- graded, from dual-core to quad-core processors in addition to other significant changes. Although we have had very limited access to the machine and therefore are not presenting definitive performance results, we can share some meaningful and constructive experiences to the user community which could be of assistance as they gain access to Jaguar as well as other multi-core processor based parallel com- puters. These experiences were gained while porting a broad set of scientific application programs to Jaguar.