R `parallel` package does not exist on CRAN?

问题:

I tried to google "r package parallel" but I have not found it on CRAN. I also tried the following links, but they do not work:

http://cran.r-project.org/web/packages/parallel/index.html

http://cran.r-project.org/web/packages/parallel

http://cran.r-project.org/package=parallel

It is also absent in the list of available.packages().

But apparently the package parallel does exist! :-) I have it in the list of my packages and it even has its own tag here :-)

回答1:

Is this because it is inside r-core since 2.14.0 ?

http://stat.ethz.ch/R-manual/R-devel/library/parallel/doc/parallel.pdf