Revision as of 11:27, 16 November 2022

Programming Details

C# is a multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming. Although originally developed by Microsoft for their own platform it has been standardized and a Linux version called MONO has been developed and matured.

The Mono project provides an open-source C# compiler, a complete open-source implementation of the Common Language Infrastructure including the required framework libraries as they appear in the ECMA specification, and a nearly complete implementation of the Microsoft proprietary .NET class libraries up to .NET 3.5. Note at this time Windows Presentation Foundation (WPF) does not exist.

Programming example

using System;
using MPI;

class Ring
{
    static void Main(string[] args)
    {
        using (new MPI.Environment(ref args))
        {
            Intracommunicator comm = Communicator.world;
            if (comm.Rank == 0)
            {
                // program for rank 0
            }
            else // not rank 0
            {
                // program for all other ranks
            }
        }
    }
}

Modules Available

The following modules are available:

• module add mono/4.4.1
• module add mono/5.12.0
• module add mono/5.16.0.220

Compilation

The program would be compiled in the following way:

[username@login01 ~]$ module add mono/5.12.0
[username@login01 ~]$ mcs -out:cDEMO.exe cDEMO.cs

Usage Examples

Batch example

#!/bin/bash

#SBATCH -J openmpi-single-node
#SBATCH -N 1
#SBATCH --ntasks-per-node 28
#SBATCH -o %N.%j.%a.out
#SBATCH -e %N.%j.%a.err
#SBATCH -p compute
#SBATCH --exclusive
#SBATCH --mail-user= your email address here

echo $SLURM_JOB_NODELIST

module purge
module add mono/5.12.0

export I_MPI_DEBUG=5
export I_MPI_FABRICS=shm:tmi
export I_MPI_FALLBACK=no

mono /home/user/CODE_SAMPLES/C-SHARP/cDEMO.exe

[username@login01 ~]$ sbatch demo.job
Submitted batch job 1291552

Next Steps

• https://en.wikibooks.org/wiki/C_Sharp_Programming
• OpenMP
• OpenMPI

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