|Message: Identical output using autoseeding in MT mode with version 4.10||Not Logged In (login)|
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I have the following code in the constructor of a RunAction for auto-seeding
time_t systime = time(NULL); G4Random::setTheEngine(new CLHEP::RanecuEngine()); //selection of a random engine G4Random::setTheSeed(systime);
long seeds; seeds = (long) systime; seeds = (long) (systime*G4UniformRand()); G4Random::setTheSeeds(seeds); G4Random::showEngineStatus();
std::string configName = std::string(dirName) + "/Config.conf"; G4Random::saveEngineStatus(configName.c_str());
It is based on example extended/common/src/ExG4RunAction01.cc. The output to the Config.conf file is different every time.
However, the output of my my program is identical everytime. Also I noticed that if I do not set the seed before calling G4UniformRand() then I get the same value every time for G4UniformRand(). What is the correct way to automatically generate different seeds?
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