1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 \name{parallel} \alias{parallel.seeds} \title{Get initial values for parallel RNGs} \description{ On a multi-processor system, you may wish to run parallel chains using multiple \code{jags.model} objects, each running a single chain on a separate processor. This function returns a list of values that may be used to initialize the random number generator of each chain. } \usage{ parallel.seeds(factory, nchain) } \arguments{ \item{factory}{Name of the RNG factory to use.} \item{nchain}{Number of chains for which to initialize RNGs.} } \value{ \code{parallel.seeds} returns a list of RNG states. Each element is a list of length 2 with the following elements: \item{.RNG.name}{The name of the RNG} \item{.RNG.state}{An integer vector giving the state of the RNG.} } \note{ It is not yet possible to make the results of \code{parallel.seeds} reproducible. This will be fixed in a future version of JAGS. } \examples{ ##The BaseRNG factory generates up to four distinct types of RNG. If ##more than 4 chains are requested, it will recycle the RNG types, but ##use different initial values parallel.seeds("base::BaseRNG", 3) ## The lecuyer module provides the RngStream factory, which allows large ## numbers of independent parallel RNGs to be generated. load.module("lecuyer") list.factories(type="rng") parallel.seeds("lecuyer::RngStream", 5); } \author{Martyn Plummer} \seealso{ \code{\link{jags.model}}, section \dQuote{Random number generators}, for further details on RNG initialization; \code{\link{list.factories}} to find the names of available RNG factories. } \keyword{models}