Quick Start Guide

This information is for users that are adept at using an HPC system and are only interested in the basic Hydro workflow.

• Access to Hydro is limited to New Frontiers Initiative (NFI) projects and Illinois Computes projects that need access to the Hydro compute resource.

• Log into Hydro through SSH with NCSA Duo authentication.

  ssh hydro.ncsa.illinois.edu
  

• Compile MPI code, and automatically include OpenMPI libraries, with compiler wrappers. For example, mpicc -o foo.exe foo.c.

• Run jobs on Hydro with Slurm. Use sbatch or srun to submit a job to a queue. For example, srun -n 1 ./foo.exe; a sample batch script is also available.

• The Partitions section includes the names and technical details of Hydro’s queues.

• Track project usage with the accounts command (for projects charged monthly) or the accounts-remaining command (for projects with fixed allocations).

• Transfer files with Globus, linked to your NCSA identity (endpoint NFI Hydro).