// Finds unique correct allocations
public List <TaskAllocationOutput> GetCorrectAllocs()
{
List <TaskAllocationOutput> allocations = new List <TaskAllocationOutput>();
var uniqueCorrectAllocs = this.correctAllocs.GroupBy(elem => elem.GetUniqueId()).Select(group => group.First());
foreach (var alloc in uniqueCorrectAllocs)
{
Dictionary <string, List <string> > processors = new Dictionary <string, List <string> >();
foreach (var proc in alloc.Processors)
{
processors.Add(proc.Value.Id, proc.Value.Tasks);
}
TaskAllocationOutput allocOutput = new TaskAllocationOutput((allocations.Count + 1).ToString(), alloc.ProgramRuntime, alloc.EnergyConsumed, processors);
allocations.Add(allocOutput);
}
return(allocations);
}
public static List <TaskAllocationOutput> GetAllocations(TaskAllocationInput allocInput)
{
List <TaskAllocationOutput> allocations = new List <TaskAllocationOutput>();
Allocation newAllocation = new Allocation(allocInput.Tasks.Count, allocInput.Processors, allocInput.Coefficients);
var grid = new Grid(allocInput.Tasks, allocInput.Processors, allocInput.RefFrequency);
while (!newAllocation.IsDone)
{
TaskAssignment newTaskAssignment = new TaskAssignment(grid);
var taskRuntime = grid.Content[newTaskAssignment.TaskId][newTaskAssignment.ProcessorId];
newAllocation.AssignTaskToProcessor(newTaskAssignment.TaskId, newTaskAssignment.ProcessorId, taskRuntime);
grid.UpdateProcessorRuntime(newTaskAssignment.ProcessorId, grid.GetRuntime(newTaskAssignment.TaskId, newTaskAssignment.ProcessorId));
grid.RemoveRow(newTaskAssignment.TaskId);
}
var allocOutput = new TaskAllocationOutput((allocations.Count + 1).ToString(), 0, newAllocation.EnergyConsumed, newAllocation.Processors);
allocations.Add(allocOutput);
return(allocations);
}
private static string Allocation(TaskAllocationOutput allocOutput)
{
string output = $"Allocation ID = {allocOutput.AllocationId}, Time = {allocOutput.TimeConsumed}, Energy = {allocOutput.EnergyConsumed}";
output += Environment.NewLine;
foreach (var processor in allocOutput.Processors)
{
output += "P" + processor.Key + ": ";
for (int taskIndex = 0; taskIndex < processor.Value.Count; taskIndex++)
{
output += processor.Value.ElementAt(taskIndex);
output += taskIndex == (processor.Value.Count - 1) ? "" : ", ";
}
output += Environment.NewLine;
}
output += Environment.NewLine;
output += "--------------------------------------";
output += Environment.NewLine;
output += Environment.NewLine;
return(output);
}
public static List <TaskAllocationOutput> GetAllocations(TaskAllocationInput allocInput)
{
Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
List <TaskAllocationOutput> allocations = new List <TaskAllocationOutput>();
uint trialCount = 0;
while (stopWatch.ElapsedMilliseconds < Constants.MAX_PROGRAM_DURATION_MS && allocations.Count < MAX_ALLOCATIONS)
{
var newAllocation = new HeuristicAllocation(allocInput.Tasks.Count, allocInput.Processors, allocInput.Coefficients);
var unassignedTasks = new Dictionary <string, float>(allocInput.Tasks);
var processorRuntimes = new Dictionary <string, float>();
var shouldStopAllocating = false;
while (!newAllocation.IsDone && !shouldStopAllocating)
{
var availableProcessors = new Dictionary <string, float>(allocInput.Processors);
string longestRuntimeTaskId;
string hiqhestFreqProcessorId;
float taskRuntime;
do
{
longestRuntimeTaskId = unassignedTasks.Aggregate((x, y) => x.Value > y.Value ? x : y).Key;
hiqhestFreqProcessorId = availableProcessors.Aggregate((x, y) => x.Value > y.Value ? x : y).Key;
taskRuntime = unassignedTasks[longestRuntimeTaskId] * (allocInput.RefFrequency / availableProcessors[hiqhestFreqProcessorId]);
availableProcessors.Remove(hiqhestFreqProcessorId);
if (!processorRuntimes.ContainsKey(hiqhestFreqProcessorId))
{
processorRuntimes.Add(hiqhestFreqProcessorId, 0);
}
} while ((processorRuntimes[hiqhestFreqProcessorId] + taskRuntime) > (allocInput.MaxDuration - (trialCount * TIME_STEP)) && availableProcessors.Count != 0);
if (!String.IsNullOrEmpty(hiqhestFreqProcessorId))
{
newAllocation.AssignTaskToProcessor(longestRuntimeTaskId, hiqhestFreqProcessorId, taskRuntime);
processorRuntimes[hiqhestFreqProcessorId] += taskRuntime;
unassignedTasks.Remove(longestRuntimeTaskId);
}
else
{
shouldStopAllocating = true;
}
}
float programRuntime = processorRuntimes.Max((x) => x.Value);
if (newAllocation.IsDone && programRuntime <= allocInput.MaxDuration)
{
TaskAllocationOutput allocOutput = new TaskAllocationOutput((allocations.Count + 1).ToString(), programRuntime, newAllocation.EnergyConsumed, newAllocation.Processors);
bool isAllocationUnique = true;
// Check if the same allocation already exists
foreach (var allocation in allocations)
{
if (allocation.GetUniqueId() == allocOutput.GetUniqueId())
{
isAllocationUnique = false;
}
}
if (isAllocationUnique)
{
allocations.Add(allocOutput);
}
}
trialCount += 1;
}
return(allocations.ToList());
}
