Publication Type
Conference Paper
Book Title
Proceedings of CUG 2006
Publication Date
Page Number
1
Conference Name
CUG 2006
Conference Location
Lugano, Switzerland
Conference Sponsor
Cray User Group
Conference Date
-
Abstract
We describe a variety of optimizations of GTC, a 3D gyrokinetic particle-in-cell code, for the Cray
X1E. Using performance data from multiple points in the optimization process, we compare the relative
importance of different optimizations on the Cray X1E and their effects on Cray XT3 performance. We
also describe the performance difference between small pages and large pages on the XT3, a difference
that is particularly significant for GTC.