\BOOKMARK [2][]{Outline0.1}{Outline}{} \BOOKMARK [2][]{Outline0.2}{Polish involvment}{} \BOOKMARK [3][]{Outline0.2.1.3}{Ganga and Dirac}{Outline0.2} \BOOKMARK [3][]{Outline0.2.2.4}{Tier2 structure}{Outline0.2} \BOOKMARK [3][]{Outline0.2.3.5}{PLGrid+}{Outline0.2} \BOOKMARK [3][]{Outline0.2.4.6}{GPU computing}{Outline0.2}