Exercise: R

R in supercomputers

• r-env is the only R module in Puhti. It has ~1300 packages for all fields of science.

• Mahti does not have R.

• LUMI has only EasyBuild recipe for R

• CSC Docs: r-env

• CSC Docs: R for GIS

Timing

45 min

Goals

• Get to know the r-env R environment on Puhti

• Running R code interactively and as a batch job

• Try out different ways of parallelizing R code

Prerequisites

• CSC user account and project with access to Puhti

• Some experience with R spatial

• Basic Linux skills

R exercise materials in Geocomputing Github

• Interactive working

• Simple batch job

• Parallel job with future library

• Additionally, you can check out some of the other R examples in CSC geocomputing repository.

Key points

• Puhti web interface enables working with RStudio interactively

• future can be used for parallelization