Async Governor - Divide and Conquer

Parallel.Async.DaC.cs

// using System.Threading.Tasks

var maxIterations = 10000;
var maxDOP = 10;

// Divide into groups.
var parallelGroups = Enumerable.Range(0, maxIterations)
                               .GroupBy(r => (r % maxDOP));

var parallelTasks = parallelGroups.Select(groups =>
{
    return Task.Run(async () =>
    {
        foreach (var i in groups)
        {
            // Do Async Stuff. (like IO)
            // await as you please.
        }
    });
});

await Task.WhenAll(parallelTasks);