Single-threaded aspect

Charles,

1. Perhaps this question is better directed at the R-help or
R-pacakge-devel mailinglist.

2. It basically means that R itself can only evaluate one R expression at
the time.

The parallel package circumvents this by starting multiple R-sessions and
dividing workload.

Compiled code called by R (such as C++ code through RCpp or C-code through
base R's interface) can execute multi-threaded code for internal purposes,
using e.g. openMP. A limitation is that compiled code cannot call R's C API
from multiple threads (in many cases). For example, it is not thread-safe
to create R-variables from multiple threads running in C. (R's variable
administration is such that the order of (un)making them from compiled code
matters).

I am not very savvy on Rcpp or XPtr objects, but it appears that Dirk
provided answers about that in your SO-question.

Best,
Mark

Op do 12 mei 2016 om 14:46 schreef Charles Determan <cdetermanjr at gmail.com>:

Single-threaded aspect

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