If you want to install V8, rstan R packages on TSUBAME, please try the following procedures.

※ confirmed with the version V8: 3.4.2 and rstan:2.19.3 .

　There are a lot of dependency packages for that, but they are easy to install it so please download and install dependencies by R CMD INSTALL before trying to install V8 and rstan.

* V8

$ module load gcc cuda openmpi r v8

$ R CMD INSTALL -l ~/Rlib /path/to/V8_3.4.2.tar.gz

* rstan

$ module load gcc cuda openmpi r

$ mkdir ~/.R/

$ vi ~/.R/Makevars  <----edit as follows

CXX14FLAGS=-O3 -Wno-unused-variable -Wno-unused-function
CXX14 = g++ -std=c++1y -fPIC

$ R CMD INSTALL -l ~/Rlib rstan_2.19.3.tar.gz