Difference between revisions of "Programming/C-Sharp"

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     }
 
     }
 
}
 
}
 +
</pre>
 +
<pre style="background-color: #C8C8C8; color: black; border: 2px solid #C8C8C8; font-family: monospace, sans-serif;">
 +
using System;
 +
using System.Linq;
 +
using System.Threading;
 +
using System.Threading.Tasks;
 +
using System.Collections.Concurrent;
 +
 +
class MatrixCalc
 +
{
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        static void Main(string[] args)
 +
        {
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                Random rnd = new Random();
 +
 +
                int size = int.Parse(args[0]);
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                int maxVal = 255;
 +
 +
                double[,] m1 = new double[size, size];
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                double[,] m2 = new double[size, size];
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                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);
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                                m2[i, j] = rnd.Next(0, maxVal);
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                        }
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                }
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                int para = Environment.ProcessorCount;
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 +
                var watch = System.Diagnostics.Stopwatch.StartNew();
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                Parallel.For(0, para, worker =>
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                {
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                        var max = size * (worker + 1) / para;
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                        var start = size * worker / para;
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                        for (int row = start; row < max; row++)
 +
                        {
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                                for (int col = start; col < max; col++)
 +
                                {
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                                        double temp = 0;
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                                        for (int ele = start; ele < max; ele++)
 +
                                        {
 +
                                                temp += m1[row, ele] * m2[ele, col];
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                                        }
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                                        res[row, col] = temp;
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                                }
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                        }
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                });
 +
 +
                watch.Stop();
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                var elapsedMs = watch.ElapsedMilliseconds;
 +
                System.Console.WriteLine(elapsedMs);
 +
        }
 +
}
 +
 
</pre>
 
</pre>
  
Line 93: Line 150:
 
* [[programming/OpenMPI|OpenMPI]]
 
* [[programming/OpenMPI|OpenMPI]]
  
==Navigation==
+
{{Languagespagenav}}
 
 
* [[Main_Page|Home]]
 
* [[Applications|Application support]]
 
* [[General|General]]
 
* [[Programming|Programming support]] *
 

Latest revision as of 13:49, 31 August 2023

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

Next Steps





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