Exercise: R

R in supercomputers

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

• Mahti does not have R.

• LUMI has only EasyBuild recepy for R

• CSC Docs: r-env

• CSC Docs: R for GIS

Timing

75 min

Goals

• Get to know r-env R environment on Puhti

• Running R code interactively and as 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

• Optional, Array job

• Additional, you can also 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 to parallelization