[Mono-bugs] [Bug 536919] New: Parallel.For doesn't execute when number of iterations is fewer than number of processors

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=536919


           Summary: Parallel.For doesn't execute when number of iterations
                    is fewer than number of processors
    Classification: Mono
           Product: Mono: Runtime
           Version: SVN
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: misc
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: skkaul at andrew.cmu.edu
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


Consider the following program:

using System;
using System.Threading;

namespace Grue
{
  class Test
  {
    public static void Main(string[] args)
    {
      Parallel.For(0, Convert.ToInt32(args[0]), (i, loopState) =>
      {
        Console.Out.WriteLine(i);
      });
    }
  }
}

On a 2-core x86 machine, the loop fails to execute if the argument is less than
2. On an 8-core x86 machine, the loop fails to execute if the argument is less
than 8. I am running Mono 2.5 r140988.

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