As a sanity check, the first thing I do whenever I install a new version of ROOT is to make sure that I can run "benchmarks.C" from the tutorials subdirectory. At the end of this test program, a quantity called a "rootmark" is always printed out. I have no idea what a rootmark is, but I suspect it is a benchmark measure of some kind. This is the output I get after running "benchmarks.C" on my machine, which is a 500 MHz PIII with 128 MB RAM running RedHat 6.1 Intel and using gcc 2.95.2, for two recent versions so of ROOT: ROOT 2.24.02: * Your machine is estimated at 134.93 ROOTMARKS * ROOT 2.23.12 * Your machine is estimated at 169.13 ROOTMARKS * As you can see, the rootmarks differ by about 20%. Not knowing what a rootmark is, I don't know if a 20% discrepancy for two different versions of ROOT running on the same machine, and built with the same compiler, is important or not. Could someone knowledgeable about a rootmark speak to this? Does it mean that ROOT 2.24.02 is somehow 20% "slower" that 2.23.12? Thank you for any insight. -- Matthew D. Langston SLD, Stanford Linear Accelerator Center langston@SLAC.Stanford.EDU
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