high resolution clock for seed

[drabosky]

high resolution clock for seed

[redcurry]

When doing batch simulations, I set the seed to $RANDOM, which in bash produces a different random number every time it is called. So even if 1,000 simulations all start at the same time, they will have different random seeds. It's not a perfect solution because $RANDOM produces numbers from 0 to ~65,000, so the probability that you'll have two simulations start with the same seed is not very small. But for most practical purposes, it works.

bamm -c divcontrol.txt --seed $RANDOM

[drabosky]

Ah, I didn't know that. I thought it was just using time(0) in set.seed() giving per-second resolution. I am finishing a BAMM simulator and learned about chronos, which seems useful in this context.

On Dec 4, 2014, at 9:24 AM, Carlos Anderson wrote:

When doing batch simulations, I set the seed to $RANDOM, which in bash produces a different random number every time it is called. So even if 1,000 simulations all start at the same time, they will have different random seeds. It's not a perfect solution because $RANDOM produces numbers from 0 to ~65,000, so the probability that you'll have two simulations start with the same seed is not very small. But for most practical purposes, it works.

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