From gwatts@phys.washington.edu Fri Apr 30 16:35:03 2004 Date: Thu, 22 Apr 2004 01:42:18 -0700 From: Gordon Watts To: mverzocc@fnal.gov, d0dfwg@fnal.gov Cc: Terry Wyatt Subject: RE: Comments from the WZ group on data format issues Hi, Thanks for the nice list and detailed comments! I didn't understand what you meant, Marco & Terry, by the statement "Possibilities of reducing the branches without recompilation.". Could you provide a little more detail? And at one point you say: " The answer to this question is NO F4ING WAY. The reasons have already been explained at point 5. Any algorithm development which is not done inside the framework, or which is not ported to the framework is not useful for the collaboration and should be discouraged." I'm guessing that being able to run the root algorithms in the framework is not acceptable to you. Could you explain what issues you don't like there? I've picked a few repeated things out of it and summarized below. Let me know if I've missed any major themes. - Transparency. If there is a variable in the root file can you tell what TMB variable(s) it came from easily? - Docs/Samples not sufficient at the moment for tmb_tree -- had better be for the data format choosen. - Back porting of root code (selection, algorithms) is slow. - PMCS uses its own root format (!!) - More people should use cvs for their analysis code, no matter it being in framework or other. - Common root-tuple reduces the chance of errors for fairly complex TMB extraction code (or chance is reduced to a single point of failure). - Yet Another Root Tuple Processing Framework (YARTPF). - Needs ability to customize the final root format WZ will use the final format. This is more than just adding or removing branches; sounds like different variables for things like electrons, etc., would be added or removed. - Who will support the common format? - Keep number of Shared Libraries to a minimum -----Original Message----- From: Marco Verzocchi [mailto:mverzocc@fnal.gov] Sent: Tuesday, April 20, 2004 5:27 PM To: d0dfwg@fnal.gov Cc: Terry Wyatt Subject: Comments from the WZ group on data format issues