avoid_parallel_by_default.sge

#! /usr/bin/env bash
#$ -N avoid_parallel_by_default  ## job name
#$ -cwd                          ## preserve working directory
#$ -j yes                        ## merge stdout and stderr

## Environment variables setting single-thread processing by default
env | grep THREADS
env | grep FUTURE

## Examples of using these from R
module load CBI r

## R_FUTURE_AVAILABLECORES_FALLBACK
Rscript --vanilla -e "future::availableCores()"
(unset R_FUTURE_AVAILABLECORES_FALLBACK; Rscript --vanilla -e "future::availableCores()")

## OMP_NUM_THREADS
Rscript --vanilla -e "data.table::getDTthreads()"
(unset OMP_NUM_THREADS; Rscript --vanilla -e "data.table::getDTthreads()")