Re: brag-1-1-20

From: Flemming Videbaek (videbaek@sgs1.hirg.bnl.gov)
Date: Wed Sep 18 2002 - 16:58:05 EDT

  • Next message: Peter H. L. Christiansen: "Re: brag-1-1-20"

    Hi Djam
    
    You are certainly right that brag-1-1-12 used guxint 1.7 which had the PC
    changes
    overwritten. I will like Peter to comment specifically on the validity but I
    would guess the errors on the acceptance map
    is de facto larger since the additional files generated just adds to the
    'same' content after a while -
    but this is probably NOT the dominating error in the analysis at this time
    (statistics, cuts, effeciencies.)
    
    >
    > This sounds not good at all. I generated the FS acceptance maps after you
    > had improved the random generator intialization but I used brag-1-1-12 and
    > the stuff you added was gone (as early as brag-1-1-8). Now, I wonder about
    > the validity of my simulation...
    >
    > This clearly means that some people never update first their software
    > before committing. This update is important since some conflicts are
    > detected at this stage. Christian described the full procedure elsewhere
    > (brat guide). This is not the best piece of literature ever written but
    > please, read it at least once if you do care about the experiment.
    
    I agree whole hartedly- this is also why the versioning and tagging of code
    + knowing what you used is paramount.
    As a second comment - Hiro was not to blame for the change in guxint.F - but
    someone else, in any case for all please recall the lesson.
    
    Flemming
    
    ------------------------------------------------------
    Flemming Videbaek
    Physics Department
    Brookhaven National Laboratory
    
    tlf: 631-344-4106
    fax 631-344-1334
    e-mail: videbaek@bnl.gov
    



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