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jakob-r committed Oct 27, 2020
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8 changes: 4 additions & 4 deletions todo-files/outdated_rmds/parallelization.Rmd
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# Parallelization

It is possible to parallelize the evaluation of the target function to speed up the computation. Internally the
evaluation of the target function is realized with the R package `parallelMap`. This package offers simple parallelization with various different backends. For details on the usage see the [parallelMap github page](https://github.com/berndbischl/parallelMap#parallelmap), which offers a nice tutorial and describes all possible backends thorougly. For our usage we use a *multicore* backend. Note, that the multicore parallelization does _not_ work on windows machines.
evaluation of the target function is realized with the R package `parallelMap`. This package offers simple parallelization with various different backends. For details on the usage see the [parallelMap github page](https://github.com/mlr-org/parallelMap#parallelmap), which offers a nice tutorial and describes all possible backends thorougly. For our usage we use a *multicore* backend. Note, that the multicore parallelization does _not_ work on windows machines.

```{r eval=FALSE}
library(mlrMBO)
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fn = function(x) {
lrn = makeLearner("classif.ksvm", par.vals = x)
rdesc = makeResampleDesc("CV", iters = 10L)
res = resample(learner = lrn, iris.task, rdesc, show.info = FALSE)
res$aggr
}
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2 changes: 1 addition & 1 deletion vignettes/supplementary/parallelization.Rmd
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The parallelization of multiple evaluations of the target function is realized internally with the R package `parallelMap`.
This package offers simple parallelization with various different back-ends.
For details on the usage see the [parallelMap github page](https://github.com/berndbischl/parallelMap#readme), which offers a nice tutorial and describes all possible back-ends thoroughly.
For details on the usage see the [parallelMap github page](https://github.com/mlr-org/parallelMap#readme), which offers a nice tutorial and describes all possible back-ends thoroughly.
In this example we use a *multicore* back-end, which is also the most common use-case.
Note, that the multicore parallelization does _not_ work on windows machines.

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