def mapping_opt_iterative_local_search(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg, shm, iteration_num,
sub_iteration, report, detailed_report, logging):
if report:
print("===========================================")
print("STARTING MAPPING OPTIMIZATION...USING ITERATIVE LOCAL SEARCH...")
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, False)
starting_cost = best_cost
if report:
print("INITIAL COST:"+str(starting_cost))
mapping_cost_file = open('Generated_Files/Internal/LocalSearchMappingCost.txt', 'w')
mapping_cost_file.close()
mapping_process_file = open('Generated_Files/Internal/MappingProcess.txt', 'w')
mapping_process_file.close()
for Iteration in range(0, iteration_num):
logging.info(" ITERATION:"+str(Iteration))
random_seed = Config.mapping_random_seed
random.seed(Config.mapping_random_seed)
for i in range(0, Iteration):
random_seed = random.randint(1, 100000)
(current_tg, current_ctg, current_ag) = mapping_opt_local_search(tg, ctg, ag, noc_rg, critical_rg,
noncritical_rg, shm, sub_iteration,
False, detailed_report, logging,
"LocalSearchMappingCost",
"mapping_process_file_name", random_seed)
if current_tg is not False:
current_cost = Mapping_Functions.mapping_cost_function(current_tg, current_ag, shm, False)
if current_cost <= best_cost:
if current_cost < best_cost:
if report:
print("\033[32m* NOTE::\033[0mBETTER SOLUTION FOUND WITH COST: "+str(current_cost) +
"\t ITERATION: "+str(Iteration))
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(Iteration))
else:
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(Iteration))
best_tg = copy.deepcopy(current_tg)
best_ag = copy.deepcopy(current_ag)
best_ctg = copy.deepcopy(current_ctg)
best_cost = current_cost
del current_tg
del current_ag
del current_ctg
Mapping_Functions.clear_mapping(tg, ctg, ag)
counter = 0
schedule = True
random_seed = Config.mapping_random_seed
random.seed(Config.mapping_random_seed)
for i in range(0, Iteration):
random_seed = random.randint(1, 100000)
while not Mapping_Functions.make_initial_mapping(tg, ctg, ag, shm, noc_rg, critical_rg,
noncritical_rg, False, logging, random_seed):
if counter == 10: # we try 10 times to find some initial solution... how ever if it fails...
schedule = False
break
counter += 1
if schedule:
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, False, logging)
else:
if report:
print("\033[33mWARNING::\033[0m CAN NOT FIND ANOTHER FEASIBLE SOLUTION... ",
"ABORTING ITERATIVE LOCAL SEARCH...")
logging.info("CAN NOT FIND ANOTHER FEASIBLE SOLUTION... ABORTING ITERATIVE LOCAL SEARCH...")
if report:
print("-------------------------------------")
print("STARTING COST: "+str(starting_cost)+"\tFINAL COST: "+str(best_cost))
print("IMPROVEMENT:"+str("{0:.2f}".format(100*(starting_cost-best_cost)/starting_cost))+" %")
return best_tg, best_ctg, best_ag
if report:
print("-------------------------------------")
print("STARTING COST:"+str(starting_cost)+"\tFINAL COST:"+str(best_cost))
print("IMPROVEMENT:"+str("{0:.2f}".format(100*(starting_cost-best_cost)/starting_cost))+" %")
return best_tg, best_ctg, best_ag
def mapping_opt_local_search(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg, shm,
iteration_num, report, detailed_report, logging,
cost_data_file_name, mapping_process_file_name, random_seed,
initial_mapping_string=None):
random.seed(random_seed)
if report:
print("===========================================")
print("STARTING MAPPING OPTIMIZATION...USING LOCAL SEARCH...")
print("NUMBER OF ITERATIONS: "+str(iteration_num))
if type(cost_data_file_name) is str:
mapping_cost_file = open('Generated_Files/Internal/'+cost_data_file_name+'.txt', 'a')
else:
raise ValueError("cost_data_file_name name is not string: "+str(cost_data_file_name))
if type(mapping_process_file_name) is str:
mapping_process_file = open('Generated_Files/Internal/'+mapping_process_file_name+'.txt', 'a')
else:
raise ValueError("mapping_process_file name is not string: "+str(mapping_process_file_name))
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, False, initial_mapping_string=initial_mapping_string)
starting_cost = best_cost
for iteration in range(0, iteration_num):
logging.info(" ITERATION:"+str(iteration))
cluster_to_move = random.choice(list(ctg.nodes()))
current_node = ctg.node[cluster_to_move]['Node']
Mapping_Functions.remove_cluster_from_node(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, current_node, logging)
destination_node = random.choice(list(ag.nodes()))
if Config.EnablePartitioning:
while ctg.node[cluster_to_move]['Criticality'] != ag.node[destination_node]['Region']:
destination_node = random.choice(list(ag.nodes()))
# print(ctg.node[cluster_to_move]['Criticality'],AG.node[destination_node]['Region'])
try_counter = 0
while not Mapping_Functions.add_cluster_to_node(tg, ctg, ag, shm, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, destination_node, logging):
# If add_cluster_to_node fails it automatically removes all the connections...
# we need to add the cluster to the old place...
Mapping_Functions.add_cluster_to_node(tg, ctg, ag, shm, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, current_node, logging)
# choosing another cluster to move
cluster_to_move = random.choice(list(ctg.nodes()))
current_node = ctg.node[cluster_to_move]['Node']
Mapping_Functions.remove_cluster_from_node(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, current_node, logging)
destination_node = random.choice(list(ag.nodes()))
if Config.EnablePartitioning:
while ctg.node[cluster_to_move]['Criticality'] != ag.node[destination_node]['Region']:
destination_node = random.choice(list(ag.nodes()))
# print(ctg.node[cluster_to_move]['Criticality'],AG.node[destination_node]['Region'])
if try_counter >= 3*len(ag.nodes()):
if report:
print("CAN NOT FIND ANY FEASIBLE SOLUTION... ABORTING LOCAL SEARCH...")
logging.info("CAN NOT FIND ANY FEASIBLE SOLUTION... ABORTING LOCAL SEARCH...")
tg = copy.deepcopy(best_tg)
ag = copy.deepcopy(best_ag)
ctg = copy.deepcopy(ctg)
if report:
Scheduling_Reports.report_mapped_tasks(ag, logging)
Mapping_Functions.mapping_cost_function(tg, ag, shm, True, initial_mapping_string=initial_mapping_string)
return best_tg, best_ctg, best_ag
try_counter += 1
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, False, logging)
current_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, detailed_report, initial_mapping_string= initial_mapping_string)
mapping_process_file.write(Mapping_Functions.mapping_into_string(tg)+"\n")
mapping_cost_file.write(str(current_cost)+"\n")
if current_cost <= best_cost:
if current_cost < best_cost:
if report:
print("\033[32m* NOTE::\033[0mBETTER SOLUTION FOUND WITH COST: "+str(current_cost) +
"\t ITERATION:"+str(iteration))
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(iteration))
else:
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(iteration))
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = current_cost
else:
tg = copy.deepcopy(best_tg)
ag = copy.deepcopy(best_ag)
ctg = copy.deepcopy(best_ctg)
mapping_process_file.write(Mapping_Functions.mapping_into_string(tg)+"\n")
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, False, logging)
mapping_process_file.close()
mapping_cost_file.close()
if report:
print("-------------------------------------")
print("STARTING COST: "+str(starting_cost)+"\tFINAL COST: "+str(best_cost) +
"\tAFTER "+str(iteration_num)+" ITERATIONS")
print("IMPROVEMENT:"+str("{0:.2f}".format(100*(starting_cost-best_cost)/starting_cost))+" %")
return best_tg, best_ctg, best_ag
def mapping(tg, ag, noc_rg, critical_rg, non_critical_rg, shm, logging, iteration=None
, initial_mapping_string = None):
"""
Calculate different mapping algorithms
Returns tg And ag after Mapping in case of success
:param tg: Task Graph
:param ag: Architecture Graph
:param noc_rg: NoC Routing Graph
:param critical_rg: NoC Routing Graph for Critical Region
:param non_critical_rg: NoC Routing Graph for non-Critical Region
:param shm: System Health Map! (Please note that mapper should not even have access to ful SHMU info)
:param logging: logging file
:return: (tg, ag) in case of failing returns (None, None)
"""
# to run the following heuristics (Min_Min,Max_Min), one needs to use independent
# tasks... Please use: generate_random_independent_tg
if Config.Mapping_Function == 'MinMin':
if Config.tg.type == 'RandomIndependent':
return SimpleGreedy.min_min_mapping(tg, ag, shm, logging)
else:
raise ValueError('WRONG TG TYPE FOR THIS MAPPING FUNCTION. SHOULD USE::RandomIndependent')
elif Config.Mapping_Function == 'MaxMin':
if Config.tg.type == 'RandomIndependent':
return SimpleGreedy.max_min_mapping(tg, ag, shm, logging)
else:
raise ValueError('WRONG TG TYPE FOR THIS MAPPING FUNCTION. SHOULD USE::RandomIndependent')
elif Config.Mapping_Function == 'MinExecutionTime':
if Config.tg.type == 'RandomIndependent':
return SimpleGreedy.min_execution_time(tg, ag, shm, logging)
else:
raise ValueError('WRONG TG TYPE FOR THIS MAPPING FUNCTION. SHOULD USE::RandomIndependent')
elif Config.Mapping_Function == 'MinimumCompletionTime':
if Config.tg.type == 'RandomIndependent':
return SimpleGreedy.minimum_completion_time(tg, ag, shm, logging)
else:
raise ValueError('WRONG TG TYPE FOR THIS MAPPING FUNCTION. SHOULD USE::RandomIndependent')
elif Config.Mapping_Function == 'NMap':
return NMap.n_map(tg, ag, noc_rg, critical_rg, non_critical_rg, shm, logging)
elif Config.Mapping_Function in ['LocalSearch', 'IterativeLocalSearch', 'SimulatedAnnealing']:
if Config.tg.type in ['RandomDependent', 'Manual', 'FromDOTFile']:
pass
else:
raise ValueError('WRONG TG TYPE FOR THIS MAPPING FUNCTION. SHOULD USE::RandomDependent')
clustering_start_time = time.time()
# clustered task graph
if Config.task_clustering:
ctg = copy.deepcopy(Clustering.generate_ctg(len(ag.nodes())))
if Clustering.initial_clustering(tg, ctg):
# Clustered Task Graph Optimization
if Config.Clustering_Optimization:
(best_clustering, best_task_graph) = \
Clustering.ctg_opt_local_search(tg, ctg, Config.clustering.iterations, logging)
tg = copy.deepcopy(best_task_graph)
ctg = copy.deepcopy(best_clustering)
del best_clustering, best_task_graph
# Clustering_Test.double_check_ctg(tg, ctg)
Clustering_Reports.report_ctg(ctg, "CTG_PostOpt.png")
Clustering_Reports.viz_clustering_opt()
else:
print("CLUSTERING OPTIMIZATION TURNED OFF...")
print("REMOVING EMPTY CLUSTERS...")
Clustering_Functions.remove_empty_clusters(ctg)
Clustering_Reports.report_ctg(ctg, "CTG_PostCleaning.png")
print("\033[92mTIME::\033[0m CLUSTERING AND OPTIMIZATION TOOK: "
+ str(round(time.time()-clustering_start_time))+" SECONDS")
else:
print("Initial Clustering Failed....")
raise ValueError("INITIAL CLUSTERING FAILED...")
else:
ctg = copy.deepcopy(Clustering.gen_transparent_clusters(tg))
mapping_start_time = time.time()
# Mapping CTG on AG
random_seed = Config.mapping_random_seed
if Mapping_Functions.make_initial_mapping(tg, ctg, ag, shm, noc_rg, critical_rg, non_critical_rg,
True, logging, random_seed, iteration):
#if Config.DistanceBetweenMapping:
# init_mapping_string = Mapping_Functions.mapping_into_string(tg)
# print(init_mapping_string)
#else:
# init_mapping_string = None
Mapping_Reports.report_mapping(ag, logging)
# Schedule all tasks
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, Config.DebugDetails, logging)
Scheduling_Reports.report_mapped_tasks(ag, logging)
Mapping_Functions.mapping_cost_function(tg, ag, shm, Config.DebugInfo)
if Config.Mapping_Function == 'LocalSearch':
mapping_cost_file = open('Generated_Files/Internal/LocalSearchMappingCost.txt', 'w')
current_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, False, initial_mapping_string=initial_mapping_string)
mapping_cost_file.write(str(current_cost)+"\n")
mapping_cost_file.close()
mapping_process_file = open('Generated_Files/Internal/MappingProcess.txt', 'w')
mapping_process_file.write(Mapping_Functions.mapping_into_string(tg)+"\n")
mapping_process_file.close()
(best_tg, best_ctg, best_ag) = \
Local_Search.mapping_opt_local_search(tg, ctg, ag, noc_rg, critical_rg,
non_critical_rg, shm,
Config.LocalSearchIteration,
Config.DebugInfo, Config.DebugDetails, logging,
"LocalSearchMappingCost", "MappingProcess",
Config.mapping_random_seed, initial_mapping_string=initial_mapping_string)
tg = copy.deepcopy(best_tg)
ag = copy.deepcopy(best_ag)
del best_tg, best_ctg, best_ag
Mapping_Reports.viz_mapping_opt('LocalSearchMappingCost', iteration)
elif Config.Mapping_Function == 'IterativeLocalSearch':
(best_tg, best_ctg, best_ag) = \
Local_Search.mapping_opt_iterative_local_search(tg, ctg, ag, noc_rg, critical_rg,
non_critical_rg, shm,
Config.IterativeLocalSearchIterations,
Config.LocalSearchIteration,
Config.DebugInfo, Config.DebugDetails,
logging)
tg = copy.deepcopy(best_tg)
ag = copy.deepcopy(best_ag)
del best_tg, best_ctg, best_ag
Mapping_Reports.viz_mapping_opt('LocalSearchMappingCost', iteration)
elif Config.Mapping_Function == 'SimulatedAnnealing':
(best_tg, best_ctg, best_ag) = SimulatedAnnealing.optimize_mapping_sa(tg, ctg, ag, noc_rg,
critical_rg, non_critical_rg,
shm, 'SA_MappingCost',
logging)
Mapping_Reports.viz_mapping_opt('SA_MappingCost', iteration=None)
if Config.SA_AnnealingSchedule == 'Adaptive':
Mapping_Reports.viz_cost_slope()
elif Config.SA_AnnealingSchedule == 'Huang':
Mapping_Reports.viz_huang_race()
tg = copy.deepcopy(best_tg)
ag = copy.deepcopy(best_ag)
del best_tg, best_ctg, best_ag
# print(Mapping_Functions.mapping_into_string(TG))
print("\033[92mTIME::\033[0m MAPPING AND OPTIMIZATION TOOK: "
+ str(round(time.time()-mapping_start_time))+" SECONDS")
Mapping_Reports.report_mapping(ag, logging)
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, False, logging)
Scheduling_Reports.report_mapped_tasks(ag, logging)
if not Scheduling_Functions.check_if_all_deadlines_are_met(tg,ag):
raise ValueError("not all critical tasks have met their deadline!")
Mapping_Functions.mapping_cost_function(tg, ag, shm, True, initial_mapping_string=initial_mapping_string)
return tg, ag
else:
Mapping_Reports.report_mapping(ag, logging)
print("===========================================")
raise ValueError("INITIAL MAPPING FAILED...")
return None, None
def optimize_mapping_sa(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg, shm,
cost_data_file, logging):
print("===========================================")
print("STARTING MAPPING OPTIMIZATION...USING SIMULATED ANNEALING...")
print("STARTING TEMPERATURE: " + str(Config.SA_InitialTemp))
print("ANNEALING SCHEDULE: " + Config.SA_AnnealingSchedule)
print("TERMINATION CRITERIA: " + Config.TerminationCriteria)
print("================")
if type(cost_data_file) is str:
mapping_cost_file = open(
'Generated_Files/Internal/' + cost_data_file + '.txt', 'a')
else:
raise ValueError("cost_data_file name is not string: " +
str(cost_data_file))
mapping_process_file = open('Generated_Files/Internal/MappingProcess.txt',
'w')
sa_temperature_file = open('Generated_Files/Internal/SATemp.txt', 'w')
sa_cost_slop_file = open('Generated_Files/Internal/SACostSlope.txt', 'w')
sa_huang_race_file = open('Generated_Files/Internal/SAHuangRace.txt', 'w')
if Config.SA_AnnealingSchedule in ['Adaptive', 'Aart', 'Huang']:
cost_monitor = deque([])
else:
cost_monitor = []
if Config.DistanceBetweenMapping:
init_map_string = Mapping_Functions.mapping_into_string(tg)
if Config.Mapping_CostFunctionType == 'CONSTANT':
Mapping_Functions.clear_mapping(tg, ctg, ag)
if not Mapping_Functions.make_initial_mapping(
tg, ctg, ag, shm, noc_rg, critical_rg, noncritical_rg,
True, logging, Config.mapping_random_seed):
raise ValueError("FEASIBLE MAPPING NOT FOUND...")
else:
init_map_string = None
current_tg = copy.deepcopy(tg)
current_ag = copy.deepcopy(ag)
current_ctg = copy.deepcopy(ctg)
current_cost = Mapping_Functions.mapping_cost_function(
tg, ag, shm, False, initial_mapping_string=init_map_string)
starting_cost = current_cost
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = current_cost
initial_temp = Config.SA_InitialTemp
sa_temperature_file.write(str(initial_temp) + "\n")
temperature = initial_temp
slope = None
zero_slope_counter = 0
standard_deviation = None
# for Huang Annealing schedule
huang_counter1 = 0
huang_counter2 = 0
huang_steady_counter = 0
iteration_num = Config.SimulatedAnnealingIteration
# for i in range(0, iteration_num):
# move to another solution
i = 0
while True:
i += 1
new_tg, new_ctg, new_ag = move_to_next_solution(
i, current_tg, current_ctg, current_ag, noc_rg, shm, critical_rg,
noncritical_rg, logging)
Scheduling_Functions.clear_scheduling(new_ag)
Scheduler.schedule_all(new_tg, new_ag, shm, False, logging)
# calculate the cost of new solution
new_cost = Mapping_Functions.mapping_cost_function(
new_tg, new_ag, shm, False, initial_mapping_string=init_map_string)
if new_cost < best_cost:
best_tg = copy.deepcopy(new_tg)
best_ag = copy.deepcopy(new_ag)
best_ctg = copy.deepcopy(new_ctg)
best_cost = new_cost
print("\033[33m* NOTE::\033[0mFOUND BETTER SOLUTION WITH COST:" +
"{0:.2f}".format(new_cost) + "\t ITERATION:" + str(i) +
"\tIMPROVEMENT:" +
"{0:.2f}".format(100 * (starting_cost - new_cost) /
starting_cost) + " %")
# calculate the probability P of accepting the solution
prob = metropolis(current_cost, new_cost, temperature)
# print("prob:", prob)
# throw the coin with probability P
random_seed = Config.mapping_random_seed
random.seed(Config.mapping_random_seed)
for j in range(0, i):
random_seed = random.randint(1, 100000)
random.seed(random_seed)
logging.info("Throwing Dice: random_seed: " + str(random_seed) +
" iteration: " + str(i))
if prob > random.random():
# accept the new solution
move_accepted = True
current_tg = copy.deepcopy(new_tg)
current_ag = copy.deepcopy(new_ag)
current_ctg = copy.deepcopy(new_ctg)
current_cost = new_cost
if Config.SA_ReportSolutions:
if slope is not None:
print(
"\033[32m* NOTE::\033[0mMOVED TO SOLUTION WITH COST:",
"{0:.2f}".format(current_cost), "\tprob:",
"{0:.2f}".format(prob), "\tTemp:",
"{0:.2f}".format(temperature), "\t Iteration:", i,
"\tSLOPE:", "{0:.2f}".format(slope))
if standard_deviation is not None:
print(
"\033[32m* NOTE::\033[0mMOVED TO SOLUTION WITH COST:",
"{0:.2f}".format(current_cost), "\tprob:",
"{0:.2f}".format(prob), "\tTemp:",
"{0:.2f}".format(temperature), "\t Iteration:", i,
"\tSTD_DEV:", "{0:.2f}".format(standard_deviation))
else:
print(
"\033[32m* NOTE::\033[0mMOVED TO SOLUTION WITH COST:",
"{0:.2f}".format(current_cost), "\tprob:",
"{0:.2f}".format(prob), "\tTemp:",
"{0:.2f}".format(temperature), "\t Iteration:", i)
else:
move_accepted = False
# move back to initial solution
pass
# update Temp
mapping_process_file.write(
Mapping_Functions.mapping_into_string(current_tg) + "\n")
sa_temperature_file.write(str(temperature) + "\n")
mapping_cost_file.write(str(current_cost) + "\n")
if Config.SA_AnnealingSchedule == 'Adaptive':
if len(cost_monitor) > Config.CostMonitorQueSize:
cost_monitor.appendleft(current_cost)
cost_monitor.pop()
else:
cost_monitor.appendleft(current_cost)
slope = calculate_slope_of_cost(cost_monitor)
if slope == 0:
zero_slope_counter += 1
else:
zero_slope_counter = 0
sa_cost_slop_file.write(str(slope) + "\n")
if Config.SA_AnnealingSchedule == 'Aart':
if len(cost_monitor) == Config.CostMonitorQueSize:
standard_deviation = statistics.stdev(cost_monitor)
cost_monitor.clear()
# print(standard_deviation)
else:
cost_monitor.appendleft(current_cost)
# Huang's annealing schedule is very much like Aart's Schedule... how ever, Aart's schedule stays in a fixed
# temperature for a fixed number of steps, however, Huang's schedule decides about number of steps dynamically
if Config.SA_AnnealingSchedule == 'Huang':
cost_monitor.appendleft(current_cost)
if len(cost_monitor) > 1:
huang_cost_mean = sum(cost_monitor) / len(cost_monitor)
huang_cost_sd = statistics.stdev(cost_monitor)
if move_accepted:
if huang_cost_mean - Config.HuangAlpha * huang_cost_sd <= current_cost <= \
huang_cost_mean + Config.HuangAlpha * huang_cost_sd:
huang_counter1 += 1
else:
huang_counter2 += 1
# print(huang_counter1, huang_counter2)
sa_huang_race_file.write(
str(huang_counter1) + " " + str(huang_counter2) + "\n")
if huang_counter1 == Config.HuangTargetValue1:
standard_deviation = statistics.stdev(cost_monitor)
cost_monitor.clear()
huang_counter1 = 0
huang_counter2 = 0
huang_steady_counter = 0
elif huang_counter2 == Config.HuangTargetValue2:
huang_counter1 = 0
huang_counter2 = 0
standard_deviation = None
elif huang_steady_counter == Config.CostMonitorQueSize:
standard_deviation = statistics.stdev(cost_monitor)
cost_monitor.clear()
huang_counter1 = 0
huang_counter2 = 0
huang_steady_counter = 0
print(
"\033[36m* COOLING::\033[0m REACHED MAX STEADY STATE... PREPARING FOR COOLING..."
)
else:
standard_deviation = None
huang_steady_counter += 1
temperature = next_temp(initial_temp, i, iteration_num, temperature,
slope, standard_deviation)
if Config.SA_AnnealingSchedule == 'Adaptive':
if zero_slope_counter == Config.MaxSteadyState:
print("NO IMPROVEMENT POSSIBLE...")
break
if Config.TerminationCriteria == 'IterationNum':
if i == Config.SimulatedAnnealingIteration:
print("REACHED MAXIMUM ITERATION NUMBER...")
break
elif Config.TerminationCriteria == 'StopTemp':
if temperature <= Config.SA_StopTemp:
print("REACHED STOP TEMPERATURE...")
break
mapping_cost_file.close()
mapping_process_file.close()
sa_temperature_file.close()
sa_cost_slop_file.close()
sa_huang_race_file.close()
print("-------------------------------------")
print("STARTING COST:" + str(starting_cost) + "\tFINAL COST:" +
str(best_cost))
print("IMPROVEMENT:" +
"{0:.2f}".format(100 *
(starting_cost - best_cost) / starting_cost) + " %")
return best_tg, best_ctg, best_ag
def mapping_opt_local_search(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg, shm,
iteration_num, report, detailed_report, logging,
cost_data_file_name, mapping_process_file_name, random_seed,
initial_mapping_string=None):
random.seed(random_seed)
if report:
print ("===========================================")
print ("STARTING MAPPING OPTIMIZATION...USING LOCAL SEARCH...")
print ("NUMBER OF ITERATIONS: "+str(iteration_num))
if type(cost_data_file_name) is str:
mapping_cost_file = open('Generated_Files/Internal/'+cost_data_file_name+'.txt', 'a')
else:
raise ValueError("cost_data_file_name name is not string: "+str(cost_data_file_name))
if type(mapping_process_file_name) is str:
mapping_process_file = open('Generated_Files/Internal/'+mapping_process_file_name+'.txt', 'a')
else:
raise ValueError("mapping_process_file name is not string: "+str(mapping_process_file_name))
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, False, initial_mapping_string=initial_mapping_string)
starting_cost = best_cost
for iteration in range(0, iteration_num):
logging.info(" ITERATION:"+str(iteration))
cluster_to_move = random.choice(ctg.nodes())
current_node = ctg.node[cluster_to_move]['Node']
Mapping_Functions.remove_cluster_from_node(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, current_node, logging)
destination_node = random.choice(ag.nodes())
if Config.EnablePartitioning:
while ctg.node[cluster_to_move]['Criticality'] != ag.node[destination_node]['Region']:
destination_node = random.choice(ag.nodes())
# print (ctg.node[cluster_to_move]['Criticality'],AG.node[destination_node]['Region'])
try_counter = 0
while not Mapping_Functions.add_cluster_to_node(tg, ctg, ag, shm, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, destination_node, logging):
# If add_cluster_to_node fails it automatically removes all the connections...
# we need to add the cluster to the old place...
Mapping_Functions.add_cluster_to_node(tg, ctg, ag, shm, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, current_node, logging)
# choosing another cluster to move
cluster_to_move = random.choice(ctg.nodes())
current_node = ctg.node[cluster_to_move]['Node']
Mapping_Functions.remove_cluster_from_node(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg,
cluster_to_move, current_node, logging)
destination_node = random.choice(ag.nodes())
if Config.EnablePartitioning:
while ctg.node[cluster_to_move]['Criticality'] != ag.node[destination_node]['Region']:
destination_node = random.choice(ag.nodes())
# print (ctg.node[cluster_to_move]['Criticality'],AG.node[destination_node]['Region'])
if try_counter >= 3*len(ag.nodes()):
if report:
print ("CAN NOT FIND ANY FEASIBLE SOLUTION... ABORTING LOCAL SEARCH...")
logging.info("CAN NOT FIND ANY FEASIBLE SOLUTION... ABORTING LOCAL SEARCH...")
tg = copy.deepcopy(best_tg)
ag = copy.deepcopy(best_ag)
ctg = copy.deepcopy(ctg)
if report:
Scheduling_Reports.report_mapped_tasks(ag, logging)
Mapping_Functions.mapping_cost_function(tg, ag, shm, True, initial_mapping_string=initial_mapping_string)
return best_tg, best_ctg, best_ag
try_counter += 1
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, False, logging)
current_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, detailed_report, initial_mapping_string= initial_mapping_string)
mapping_process_file.write(Mapping_Functions.mapping_into_string(tg)+"\n")
mapping_cost_file.write(str(current_cost)+"\n")
if current_cost <= best_cost:
if current_cost < best_cost:
if report:
print ("\033[32m* NOTE::\033[0mBETTER SOLUTION FOUND WITH COST: "+str(current_cost) +
"\t ITERATION:"+str(iteration))
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(iteration))
else:
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(iteration))
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = current_cost
else:
tg = copy.deepcopy(best_tg)
ag = copy.deepcopy(best_ag)
ctg = copy.deepcopy(best_ctg)
mapping_process_file.write(Mapping_Functions.mapping_into_string(tg)+"\n")
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, False, logging)
mapping_process_file.close()
mapping_cost_file.close()
if report:
print ("-------------------------------------")
print ("STARTING COST: "+str(starting_cost)+"\tFINAL COST: "+str(best_cost) +
"\tAFTER "+str(iteration_num)+" ITERATIONS")
print ("IMPROVEMENT:"+str("{0:.2f}".format(100*(starting_cost-best_cost)/starting_cost))+" %")
return best_tg, best_ctg, best_ag
def mapping_opt_iterative_local_search(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg, shm, iteration_num,
sub_iteration, report, detailed_report, logging):
if report:
print ("===========================================")
print ("STARTING MAPPING OPTIMIZATION...USING ITERATIVE LOCAL SEARCH...")
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, False)
starting_cost = best_cost
if report:
print ("INITIAL COST:"+str(starting_cost))
mapping_cost_file = open('Generated_Files/Internal/LocalSearchMappingCost.txt', 'w')
mapping_cost_file.close()
mapping_process_file = open('Generated_Files/Internal/MappingProcess.txt', 'w')
mapping_process_file.close()
for Iteration in range(0, iteration_num):
logging.info(" ITERATION:"+str(Iteration))
random_seed = Config.mapping_random_seed
random.seed(Config.mapping_random_seed)
for i in range(0, Iteration):
random_seed = random.randint(1, 100000)
(current_tg, current_ctg, current_ag) = mapping_opt_local_search(tg, ctg, ag, noc_rg, critical_rg,
noncritical_rg, shm, sub_iteration,
False, detailed_report, logging,
"LocalSearchMappingCost",
"mapping_process_file_name", random_seed)
if current_tg is not False:
current_cost = Mapping_Functions.mapping_cost_function(current_tg, current_ag, shm, False)
if current_cost <= best_cost:
if current_cost < best_cost:
if report:
print ("\033[32m* NOTE::\033[0mBETTER SOLUTION FOUND WITH COST: "+str(current_cost) +
"\t ITERATION: "+str(Iteration))
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(Iteration))
else:
logging.info("NOTE:: MOVED TO SOLUTION WITH COST: "+str(current_cost)+"ITERATION: "+str(Iteration))
best_tg = copy.deepcopy(current_tg)
best_ag = copy.deepcopy(current_ag)
best_ctg = copy.deepcopy(current_ctg)
best_cost = current_cost
del current_tg
del current_ag
del current_ctg
Mapping_Functions.clear_mapping(tg, ctg, ag)
counter = 0
schedule = True
random_seed = Config.mapping_random_seed
random.seed(Config.mapping_random_seed)
for i in range(0, Iteration):
random_seed = random.randint(1, 100000)
while not Mapping_Functions.make_initial_mapping(tg, ctg, ag, shm, noc_rg, critical_rg,
noncritical_rg, False, logging, random_seed):
if counter == 10: # we try 10 times to find some initial solution... how ever if it fails...
schedule = False
break
counter += 1
if schedule:
Scheduling_Functions.clear_scheduling(ag)
Scheduler.schedule_all(tg, ag, shm, False, logging)
else:
if report:
print ("\033[33mWARNING::\033[0m CAN NOT FIND ANOTHER FEASIBLE SOLUTION... ",
"ABORTING ITERATIVE LOCAL SEARCH...")
logging.info("CAN NOT FIND ANOTHER FEASIBLE SOLUTION... ABORTING ITERATIVE LOCAL SEARCH...")
if report:
print ("-------------------------------------")
print ("STARTING COST: "+str(starting_cost)+"\tFINAL COST: "+str(best_cost))
print ("IMPROVEMENT:"+str("{0:.2f}".format(100*(starting_cost-best_cost)/starting_cost))+" %")
return best_tg, best_ctg, best_ag
if report:
print ("-------------------------------------")
print ("STARTING COST:"+str(starting_cost)+"\tFINAL COST:"+str(best_cost))
print ("IMPROVEMENT:"+str("{0:.2f}".format(100*(starting_cost-best_cost)/starting_cost))+" %")
return best_tg, best_ctg, best_ag
def optimize_mapping_sa(tg, ctg, ag, noc_rg, critical_rg, noncritical_rg,
shm, cost_data_file, logging):
print ("===========================================")
print ("STARTING MAPPING OPTIMIZATION...USING SIMULATED ANNEALING...")
print ("STARTING TEMPERATURE: "+str(Config.SA_InitialTemp))
print ("ANNEALING SCHEDULE: "+Config.SA_AnnealingSchedule)
print ("TERMINATION CRITERIA: "+Config.TerminationCriteria)
print ("================")
if type(cost_data_file) is str:
mapping_cost_file = open('Generated_Files/Internal/'+cost_data_file+'.txt', 'a')
else:
raise ValueError("cost_data_file name is not string: "+str(cost_data_file))
mapping_process_file = open('Generated_Files/Internal/MappingProcess.txt', 'w')
sa_temperature_file = open('Generated_Files/Internal/SATemp.txt', 'w')
sa_cost_slop_file = open('Generated_Files/Internal/SACostSlope.txt', 'w')
sa_huang_race_file = open('Generated_Files/Internal/SAHuangRace.txt', 'w')
if Config.SA_AnnealingSchedule in ['Adaptive', 'Aart', 'Huang']:
cost_monitor = deque([])
else:
cost_monitor = []
if Config.DistanceBetweenMapping:
init_map_string = Mapping_Functions.mapping_into_string(tg)
if Config.Mapping_CostFunctionType == 'CONSTANT':
Mapping_Functions.clear_mapping(tg, ctg, ag)
if not Mapping_Functions.make_initial_mapping(tg, ctg, ag, shm, noc_rg, critical_rg,
noncritical_rg, True, logging,
Config.mapping_random_seed):
raise ValueError("FEASIBLE MAPPING NOT FOUND...")
else:
init_map_string = None
current_tg = copy.deepcopy(tg)
current_ag = copy.deepcopy(ag)
current_ctg = copy.deepcopy(ctg)
current_cost = Mapping_Functions.mapping_cost_function(tg, ag, shm, False, initial_mapping_string=init_map_string)
starting_cost = current_cost
best_tg = copy.deepcopy(tg)
best_ag = copy.deepcopy(ag)
best_ctg = copy.deepcopy(ctg)
best_cost = current_cost
initial_temp = Config.SA_InitialTemp
sa_temperature_file.write(str(initial_temp)+"\n")
temperature = initial_temp
slope = None
zero_slope_counter = 0
standard_deviation = None
# for Huang Annealing schedule
huang_counter1 = 0
huang_counter2 = 0
huang_steady_counter = 0
iteration_num = Config.SimulatedAnnealingIteration
# for i in range(0, iteration_num):
# move to another solution
i = 0
while True:
i += 1
new_tg, new_ctg, new_ag = move_to_next_solution(i, current_tg, current_ctg, current_ag, noc_rg,
shm, critical_rg, noncritical_rg, logging)
Scheduling_Functions.clear_scheduling(new_ag)
Scheduler.schedule_all(new_tg, new_ag, shm, False, logging)
# calculate the cost of new solution
new_cost = Mapping_Functions.mapping_cost_function(new_tg, new_ag, shm, False,
initial_mapping_string=init_map_string)
if new_cost < best_cost:
best_tg = copy.deepcopy(new_tg)
best_ag = copy.deepcopy(new_ag)
best_ctg = copy.deepcopy(new_ctg)
best_cost = new_cost
print ("\033[33m* NOTE::\033[0mFOUND BETTER SOLUTION WITH COST:"+"{0:.2f}".format(new_cost) +
"\t ITERATION:"+str(i)+"\tIMPROVEMENT:" +
"{0:.2f}".format(100*(starting_cost-new_cost)/starting_cost)+" %")
# calculate the probability P of accepting the solution
prob = metropolis(current_cost, new_cost, temperature)
# print ("prob:", prob)
# throw the coin with probability P
random_seed = Config.mapping_random_seed
random.seed(Config.mapping_random_seed)
for j in range(0, i):
random_seed = random.randint(1, 100000)
random.seed(random_seed)
logging.info("Throwing Dice: random_seed: "+str(random_seed)+" iteration: "+str(i))
if prob > random.random():
# accept the new solution
move_accepted = True
current_tg = copy.deepcopy(new_tg)
current_ag = copy.deepcopy(new_ag)
current_ctg = copy.deepcopy(new_ctg)
current_cost = new_cost
if Config.SA_ReportSolutions:
if slope is not None:
print ("\033[32m* NOTE::\033[0mMOVED TO SOLUTION WITH COST:", "{0:.2f}".format(current_cost),
"\tprob:", "{0:.2f}".format(prob), "\tTemp:", "{0:.2f}".format(temperature),
"\t Iteration:", i, "\tSLOPE:", "{0:.2f}".format(slope))
if standard_deviation is not None:
print ("\033[32m* NOTE::\033[0mMOVED TO SOLUTION WITH COST:", "{0:.2f}".format(current_cost),
"\tprob:", "{0:.2f}".format(prob), "\tTemp:", "{0:.2f}".format(temperature),
"\t Iteration:", i, "\tSTD_DEV:", "{0:.2f}".format(standard_deviation))
else:
print ("\033[32m* NOTE::\033[0mMOVED TO SOLUTION WITH COST:", "{0:.2f}".format(current_cost),
"\tprob:", "{0:.2f}".format(prob), "\tTemp:", "{0:.2f}".format(temperature),
"\t Iteration:", i)
else:
move_accepted = False
# move back to initial solution
pass
# update Temp
mapping_process_file.write(Mapping_Functions.mapping_into_string(current_tg)+"\n")
sa_temperature_file.write(str(temperature)+"\n")
mapping_cost_file.write(str(current_cost)+"\n")
if Config.SA_AnnealingSchedule == 'Adaptive':
if len(cost_monitor) > Config.CostMonitorQueSize:
cost_monitor.appendleft(current_cost)
cost_monitor.pop()
else:
cost_monitor.appendleft(current_cost)
slope = calculate_slope_of_cost(cost_monitor)
if slope == 0:
zero_slope_counter += 1
else:
zero_slope_counter = 0
sa_cost_slop_file.write(str(slope)+"\n")
if Config.SA_AnnealingSchedule == 'Aart':
if len(cost_monitor) == Config.CostMonitorQueSize:
standard_deviation = statistics.stdev(cost_monitor)
cost_monitor.clear()
# print (standard_deviation)
else:
cost_monitor.appendleft(current_cost)
# Huang's annealing schedule is very much like Aart's Schedule... how ever, Aart's schedule stays in a fixed
# temperature for a fixed number of steps, however, Huang's schedule decides about number of steps dynamically
if Config.SA_AnnealingSchedule == 'Huang':
cost_monitor.appendleft(current_cost)
if len(cost_monitor) > 1:
huang_cost_mean = sum(cost_monitor)/len(cost_monitor)
huang_cost_sd = statistics.stdev(cost_monitor)
if move_accepted:
if huang_cost_mean - Config.HuangAlpha * huang_cost_sd <= current_cost <= \
huang_cost_mean + Config.HuangAlpha * huang_cost_sd:
huang_counter1 += 1
else:
huang_counter2 += 1
# print (huang_counter1, huang_counter2)
sa_huang_race_file.write(str(huang_counter1)+" "+str(huang_counter2)+"\n")
if huang_counter1 == Config.HuangTargetValue1:
standard_deviation = statistics.stdev(cost_monitor)
cost_monitor.clear()
huang_counter1 = 0
huang_counter2 = 0
huang_steady_counter = 0
elif huang_counter2 == Config.HuangTargetValue2:
huang_counter1 = 0
huang_counter2 = 0
standard_deviation = None
elif huang_steady_counter == Config.CostMonitorQueSize:
standard_deviation = statistics.stdev(cost_monitor)
cost_monitor.clear()
huang_counter1 = 0
huang_counter2 = 0
huang_steady_counter = 0
print ("\033[36m* COOLING::\033[0m REACHED MAX STEADY STATE... PREPARING FOR COOLING...")
else:
standard_deviation = None
huang_steady_counter += 1
temperature = next_temp(initial_temp, i, iteration_num, temperature, slope, standard_deviation)
if Config.SA_AnnealingSchedule == 'Adaptive':
if zero_slope_counter == Config.MaxSteadyState:
print ("NO IMPROVEMENT POSSIBLE...")
break
if Config.TerminationCriteria == 'IterationNum':
if i == Config.SimulatedAnnealingIteration:
print ("REACHED MAXIMUM ITERATION NUMBER...")
break
elif Config.TerminationCriteria == 'StopTemp':
if temperature <= Config.SA_StopTemp:
print ("REACHED STOP TEMPERATURE...")
break
mapping_cost_file.close()
mapping_process_file.close()
sa_temperature_file.close()
sa_cost_slop_file.close()
sa_huang_race_file.close()
print ("-------------------------------------")
print ("STARTING COST:"+str(starting_cost)+"\tFINAL COST:"+str(best_cost))
print ("IMPROVEMENT:"+"{0:.2f}".format(100*(starting_cost-best_cost)/starting_cost)+" %")
return best_tg, best_ctg, best_ag
