Minutes of the August 12, 2009 Software Meeting JLab: Jie Chen, Ying Chen, Eugene Chudakov, Mark Ito (chair), David Lawrence, Sascha Somov, Simon Taylor, Elliott Wolin, Beni Zihlmann University of New Hampshire: Maurik Holtrop Review minutes from last meeting We went over minutes from the [28]July 29, 2009 Software meeting HDGeant crashes We discussed whether the problem Beni has reported in the past is the same as that reported by Aram Teymurazyan this past week. This discussion will continue on the email list. Beni will however send out a patch for the original problem. GlueX Software Task List The [31]list has been [updated to reflect the discussion from the last meeting. Scientific Computing and GPU's Jie Chen presented an overview of how the JLab LQCD computing group is trying to [33]use GPU's to upgrade the processing power on its farm. They have tested hardware using the nVidia technology and have demonstrated good performance. non-JLab Farms David reviewed the [35]wiki page he created after polling the collaboration about computing resources at their respective home institutions that might be available for GlueX work. He is thinking that we should try to gain some experience on one or two of these sites so that we can deploy those resources when needed. There was some discussion about how hard we should be working on this. Streamlining general access to these resources should clearly be studied, but it may not be the highest priority task at this time. JLab Disk Resources for Hall D Mark reviewed the types and intended purposes of [37]disk resources at JLab. This generated discussion on several topics: * We need to document the procedure for mounting work disks on JLab desktop machines. * We need a policy on how to archive mechanical and electronics documents. * We should survey other groups at the lab on their group disk usage. * We need to document a simple procedure for archiving files onto the tape library. High-Priority Tasks We discussed the status of high priority projects that Eugene identified last time. * Simon has done some work on studying an alternate geometry for the FDC. He will present his work soon. * Dave will run poisson and do tracking analysis on the resulting alternate magnetic fields. New Action Items * Patch the HDGeant problem with FDC index 0 -> Beni * All items discussed in the "JLab Disk Resources for Hall D" section above. * All items discussed in the "High-Priority Tasks" section above. Retrieved from http://www.jlab.org/Hall-D/software/wiki/index.php/August_12%2C_2009_Software References 28. http://www.jlab.org/Hall-D/software/wiki/index.php/July_29%2C_2009_Software 31. http://www.jlab.org/Hall-D/software/Software_tasks.php 33. https://halldweb1.jlab.org/talks/2009-08/gpu-halld.pptx 35. http://www.jlab.org/Hall-D/software/wiki/index.php/Computer_Farms 37. http://www.jlab.org/Hall-D/software/wiki/index.php/Disk_Space_for_Hall_D_at_JLab