I have a question about proof. I want to sum up a variable over all events using proof, but for some reason I get a zero at the end. I generated a class using the TTree::MakeSelector function. In the Begin function I set a variable to zero, which I plan to store the sum. In Process I add 1 to the each valid event. In Terminate, I print out the value of the variable and it is zero. I know this variable is increasing in value, but for some reason I end up with zero. Do I need to think of a proof process as actually 14 different processes, where in the end I have to sum the results from each process? I didn't think so, but I'm not entirely sure how this system works. So any help would very much appreciated. Thanks, Erik -----Original Message----- From: brahms-dev-l-bounces+ebj=ku.edu@lists.bnl.gov on behalf of Hironori Ito Sent: Tue 6/7/2005 2:07 PM To: devlist Cc: Subject: [Brahms-dev-l] NOTE about using PROOF (bug?) Hello. Since some of you use PROOF in rcas, I thought I write a few warning (or some strange thing (bug???)) that I noticed while I use it. 1. PROOF goes nowhere (sometimes) when you try to draw non-existing variable. It (sometimes) did not return the prompt and just sit there. I had to kill the process. 2. PROOF does not like to merge empty histograms. 3. When you kill your local root/proofserv, it does not necessary kill proofserv process at other machines. To kill, you might need to kill proofserv at the master machine. Hiro _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-l _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Wed Jun 8 09:31:32 2005
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