public async Task <List <Aggregate> > GenerateAggregates_Parallel_Async(int maxCPU, IProgress <ProgressReportModel> progress, CancellationToken ct)
{
var opt = new ParallelOptions
{
MaxDegreeOfParallelism = maxCPU,
CancellationToken = ct
};
var aggregateSizes = GenerateAggregateSizes();
var aggregates = new List <Aggregate>();
var report = new ProgressReportModel();
var stopwatch = new Stopwatch();
stopwatch.Start();
try
{
await Task.Run(() =>
Parallel.ForEach <int>(aggregateSizes, opt, size =>
{
aggregates.Add(_particleFactory.Build(size));
UpdateProgress(progress, aggregateSizes, aggregates, report, stopwatch);
// If the job is canceled, an error is thrown which is catched below
opt.CancellationToken.ThrowIfCancellationRequested();
}));
}
catch (OperationCanceledException e)
{
_logger.Warn($"Operation canceled: {e.Message}");
}
AggregateIndexingHelper.SetAggregateIndices(aggregates);
return(aggregates);
}
public async Task <List <Aggregate> > GenerateAggregates_Async()
{
var aggregateSizes = GenerateAggregateSizes();
var aggregateGenTasks = new List <Task <Aggregate> >();
foreach (var size in aggregateSizes)
{
aggregateGenTasks.Add(Task.Run(() => _particleFactory.Build(size)));
}
var aggregates = await Task.WhenAll(aggregateGenTasks);
AggregateIndexingHelper.SetAggregateIndices(aggregates);
return(aggregates.ToList());
}
public List <Aggregate> GenerateAggregates()
{
var totalTime = new Stopwatch();
var aggregateSizes = GenerateAggregateSizes();
var aggregates = new List <Aggregate>();
foreach (var size in aggregateSizes)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
aggregates.Add(_particleFactory.Build(size));
Debug.WriteLine($"{DateTime.Now}: Built aggregate {aggregates.Count}/{aggregateSizes.Count} with {aggregates.Last().NumberOfPrimaryParticles} PP in {stopwatch.Elapsed}");
}
Debug.WriteLine($"Total ComputationTime {totalTime.Elapsed}");
totalTime.Stop();
AggregateIndexingHelper.SetAggregateIndices(aggregates);
return(aggregates);
}
/// <summary>
/// This runs the generation in parallel but not asyncronosly.
/// It first generates sizes for aggregates and subsequently generates them
/// </summary>
/// <param name="maxCPU"></param>
/// <returns></returns>
public List <Aggregate> GenerateAggregates_Parallel(int maxCPU)
{
var opt = new ParallelOptions
{
MaxDegreeOfParallelism = maxCPU
};
var aggregateSizes = GenerateAggregateSizes();
var aggregates = new List <Aggregate>();
Parallel.ForEach <int>(aggregateSizes, opt, size =>
{
var stopwatch = new Stopwatch();
stopwatch.Start();
aggregates.Add(_particleFactory.Build(size));
Debug.WriteLine($"{DateTime.Now}: Built aggregate {aggregates.Count}/{aggregateSizes.Count} with {aggregates.Last().NumberOfPrimaryParticles} PP in {stopwatch.Elapsed}");
});
AggregateIndexingHelper.SetAggregateIndices(aggregates);
return(aggregates);
}
