public double[] StaticRange()
{
_name = nameof(StaticRange);
this.ClearRanges();
var corr = new double[_values.Length / 2];
Parallel.ForEach(
WorkloadPartitioner.Create(_values.Length / 2),
range => this.AutoCorrelationToArrayImpl(corr, range)
);
return(corr);
}
//---------------------------------------------------------------------
internal double[] AutoCorrelationToArrayParallelSimd()
{
var corr = new double[_length / 2];
int n = _length;
var parallelOptions = GetParallelOptions();
const int partitionMultiplier = 8;
int partitionCount = parallelOptions.MaxDegreeOfParallelism * partitionMultiplier;
Parallel.ForEach(
WorkloadPartitioner.Create(n / 2, loadFactorAtStart: n, loadFactorAtEnd: n / 2, partitionCount),
parallelOptions,
range => this.AutoCorrelationToArrayImpl(corr, range)
);
return(corr);
}
public double[] TrapezeWorkload()
{
_name = nameof(TrapezeWorkload);
this.ClearRanges();
int n = _values.Length;
var corr = new double[n / 2];
var parallelOptions = new ParallelOptions {
MaxDegreeOfParallelism = 8
};
Parallel.ForEach(
WorkloadPartitioner.Create(n / 2, loadFactorAtStart: n, loadFactorAtEnd: n * 0.5, Environment.ProcessorCount * this.PartitionMultiplier),
parallelOptions,
range => this.AutoCorrelationToArrayImpl(corr, range));
return(corr);
}
public double[] CustomLoop()
{
_name = nameof(CustomLoop);
this.ClearRanges();
int n = _values.Length;
var corr = new double[n / 2];
int parallelCount = Environment.ProcessorCount;
WorkloadPartitioner partitioner = WorkloadPartitioner.Create(n / 2, loadFactorAtStart: n, loadFactorAtEnd: n * 0.5, Environment.ProcessorCount * this.PartitionMultiplier);
IEnumerable <KeyValuePair <long, Range> > partitionEnumerator = partitioner.GetOrderableDynamicPartitions();
var tasks = new Task[parallelCount];
tasks[0] = new Task(Loop, partitionEnumerator);
for (int i = 1; i < parallelCount; ++i)
{
tasks[i] = Task.Factory.StartNew(Loop, partitionEnumerator);
}
tasks[0].RunSynchronously();
Task.WaitAll(tasks);
return(corr);
//-----------------------------------------------------------------
void Loop(object _)
{
foreach (KeyValuePair <long, Range> partition in _ as IEnumerable <KeyValuePair <long, Range> > )
{
Range range = partition.Value;
this.AutoCorrelationToArrayImpl(corr, range);
}
}
}