private static void executeEvenDistributed(int fromInclusive, int toExclusive, Action <int> action)
{
List <ExecuteInfo> executeInfos = new List <ExecuteInfo>();
int count = toExclusive - fromInclusive;
int computeDeviceCount = Platform.ComputeDevices.Count;
int workshare = count / computeDeviceCount;
int moreWorkCount = count - workshare * computeDeviceCount;
AlgorithmCharacteristics algorithmCharacteristics = new AlgorithmCharacteristics(action);
// TODO: do something clever with algochars
for (int i = 0; i < moreWorkCount; i++)
{
int from = fromInclusive + i * (workshare + 1);
int to = from + (workshare + 1);
executeInfos.Add(new ExecuteInfo(from, to, action, Platform.ComputeDevices[i]));
}
fromInclusive = fromInclusive + moreWorkCount * (workshare + 1);
for (int i = 0; i < computeDeviceCount - moreWorkCount; i++)
{
int from = fromInclusive + i * workshare;
int to = from + workshare;
executeInfos.Add(new ExecuteInfo(from, to, action, Platform.ComputeDevices[i]));
}
System.Threading.Tasks.Parallel.ForEach(executeInfos, delegate(ExecuteInfo executeInfo) { executeInfo.Execute(); });
}
public double PredictPerformance(AlgorithmCharacteristics algorithmCharacteristics)
{
double result = 0.0;
foreach (ComputeDevice computeDevice in ComputeDevices)
{
result += computeDevice.PredictPerformance(algorithmCharacteristics);
}
return(result);
}
public double PredictPerformance(AlgorithmCharacteristics algorithmCharacteristics)
{
double result = 0.0;
foreach (ComputeUnit computeUnit in ComputeUnits)
{
result += computeUnit.PredictPerformance(algorithmCharacteristics);
}
// TODO: consider DeviceTypes
// TODO: consider Memory
return(result);
}
public double PredictPerformance(AlgorithmCharacteristics algorithmCharacteristics)
{
double result = 0.0;
foreach (ProcessingElement processingElement in ProcessingElements)
{
result += processingElement.ClockSpeed;
}
if (algorithmCharacteristics.UsesDoublePrecisionFloatingPoint && !DoublePrecisionFloatingPointSupported)
{
result /= 8; // TODO: check heuristics
}
if (algorithmCharacteristics.UsesAtomics && !AtomicsSupported)
{
result = 0;
}
// TODO: consider memory as well
return(result);
}