Programming/C-Sharp
Contents
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
}
}
}
}
using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Collections.Concurrent;
class MatrixCalc
{
static void Main(string[] args)
{
Random rnd = new Random();
int size = int.Parse(args[0]);
int maxVal = 255;
double[,] m1 = new double[size, size];
double[,] m2 = new double[size, size];
double[,] res = new double[size, size];
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
m1[i, j] = rnd.Next(0, maxVal);
m2[i, j] = rnd.Next(0, maxVal);
}
}
int para = Environment.ProcessorCount;
var watch = System.Diagnostics.Stopwatch.StartNew();
Parallel.For(0, para, worker =>
{
var max = size * (worker + 1) / para;
var start = size * worker / para;
for (int row = start; row < max; row++)
{
for (int col = start; col < max; col++)
{
double temp = 0;
for (int ele = start; ele < max; ele++)
{
temp += m1[row, ele] * m2[ele, col];
}
res[row, col] = temp;
}
}
});
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
System.Console.WriteLine(elapsedMs);
}
}
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