Profile sampler times per MCMC sampler — profile_sampler

Compile (once) and run a NIMBLE MCMC configured in conf, with per-sampler timing enabled, then return the vector of times (seconds) for each sampler defined in conf. A small in-session cache can be added by the caller if desired, but this function itself performs no caching.

Usage

profile_sampler_times(conf, cmodel, niter = 50000)

Arguments

conf: A NIMBLE MCMC configuration object (for example returned by nimble::configureMCMC(model)).
cmodel: A compiled nimbleModel used as project = for nimble::compileNimble().
niter: Integer scalar; number of MCMC iterations to run for profiling. Default 5e4.

Value

A numeric vector of length equal to the number of samplers in conf, giving the per-sampler elapsed time (in seconds). If NIMBLE reports fewer or more entries than samplers, the vector is padded or truncated accordingly with NAs.

Examples

if (FALSE) { # \dontrun{
  model  <- nimbleModel(code, constants = Const, data = Data, inits = Inits)
  cmodel <- compileNimble(model)
  conf   <- configureMCMC(model)
  ts <- profile_sampler_times(conf, cmodel, niter = 1e4)
  print(ts)
} # }