Study and Implementation on 64bit Migration of BESIII Offline Physics Software
Weidong Li · Hedianzixue yu tance jishu · 2012
With the development of computing,64-bit systems are taking place of 32-bit systems,which is both a challenge and opportunity for the BESIII offline software.Updating BESIII offline software to 64-bit systems will improve software performance significantly.But on the other hand BESIII offline software is so large and complicated,and comparing to 32-bit systems,there are significantly changes in many aspects in 64-bit systems,such as data modules,CPU computing model,which make upgrading hard and complicated.In the article,we will describe the procedure of the upgrading,explain the key problems met,and compare and analyze final physics results and performance.