Same seed != same results?

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This topic contains 1 reply, has 1 voice, and was last updated by  Kalman 3 years, 6 months ago.

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  • #962

    Dennis

    I run the same simulation multiple times with the same seed. I hoped
    that the result would stay the same but that was not the case. Should
    the results stay the same when I’m using the same seed?

    I used the FSChord-32_Peers.xml config for the simulation. I only
    change the netlayer to GNP. The rest stayed the same.

    #963

    Kalman

    Ideally this would be the case. In an ideal world, the same seed leads
    to the same random events and thus to the same simulation results.
    However, there are also parts in the simulator which are not under
    control of the development team, i.e. especially in the network layer.
    There, other sources of randomness might be used leading to a totally
    different path of random events.
    So it may be, that by using the GNP or modular network layer this
    happens. However, with a static simple network model this should not
    happen (although then the results are not so valid).

    Best regards

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