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Forum: Multithreading
Date: 16 Oct, 2014
From: <>

I've created my own AnalysisManager to create an image. I am using multithreading. I call the method below at the end of the run. The output file has the thread ID in it. For each thread there should be an output file but I get an extra file with the thread ID -1. Is it safe for me to ignore this and what is the origin of this file?

    void AnalysisImageManager::writeImages(G4String dir) const{

    G4int threadID = G4Threading::G4GetThreadId();

    std::ostringstream convert;
    convert << threadID;
    std::string prefix = convert.str();
    const unsigned int shape[] = {widthPixel,heightPixel};

    G4String string = dir + "/" + prefix + "_Compton.npy";

    string = dir + "/" + prefix + "_Photo.npy";

    string = dir + "/" + prefix + "_Prim.npy";


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1 Idea: Re: Can I ignore the output from Thread ID -1   (Andrea Dotti - 16 Oct, 2014)
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