def multiserver(m, stime):
work = "reqs"
node = "bus"
x = 0.0
for i in range(1, CPUS + 1):
if (i <= m):
pdq.Init("multibus")
streams = pdq.CreateClosed(work, pdq.TERM, i, 0.0)
nodes = pdq.CreateNode(node, pdq.CEN, pdq.ISRV)
pdq.SetDemand(node, work, stime)
pdq.Solve(pdq.EXACT)
x = pdq.GetThruput(pdq.TERM, work)
sm_x[i] = x
else:
sm_x[i] = x
def mem_model(n, m):
x = 0.0
for i in range(1, n + 2):
if (i <= m):
pdq.Init("")
pdq.nodes = pdq.CreateNode("CPU", pdq.CEN, pdq.FCFS)
pdq.nodes = pdq.CreateNode("DK1", pdq.CEN, pdq.FCFS)
pdq.nodes = pdq.CreateNode("DK2", pdq.CEN, pdq.FCFS)
pdq.streams = pdq.CreateClosed("work", pdq.TERM, i, 0.0)
pdq.SetDemand("CPU", "work", 3.0)
pdq.SetDemand("DK1", "work", 4.0)
pdq.SetDemand("DK2", "work", 2.0)
pdq.Solve(pdq.EXACT)
x = pdq.GetThruput(pdq.TERM, "work")
sm_x.append(x)
else:
sm_x.append(x) # last computed value
pdq.SetWUnit("Msgs")
pdq.SetTUnit("Time")
# Create PDQ context and workload for the network
streams = pdq.CreateOpen(jNet.work, jNet.arrivRate)
# Create PDQ queues
for i in range(len(jNet.router)):
nodes = pdq.CreateNode(jNet.router[i], pdq.CEN, pdq.FCFS)
pdq.SetVisits(jNet.router[i], jNet.work, jNet.visitRatio[i], \
jNet.servTime[i])
# Solve the model and report the peformance measures
pdq.Solve(pdq.CANON)
pdq.Report()
# generic PDQ format
# Collect particular PDQ statistics
print "---------- Selected PDQ Metrics for SimPy Comparison ---------"
for i in range(len(jNet.router)):
msgs = pdq.GetQueueLength(jNet.router[i], jNet.work, pdq.TRANS)
print "Mean queue%d: %7.4f (%s)" % (i + 1, msgs, "Not in SimPy report")
jNet.totalMsgs += msgs
print "Mean number: %7.4f" % jNet.totalMsgs
print "Mean delay: %7.4f %11s" % (pdq.GetResponse(pdq.TRANS, jNet.work), \
"(Little's law Q = X R holds!)")
print "Mean stime: %7.4f %11s" % (0, "(Not in this version of PyDQ)")
print "Mean rate: %7.4f" % pdq.GetThruput(pdq.TRANS, jNet.work)
#print "Max rate: %5.4f" % pdq.GetThruMax(pdq.TRANS, work)
print "Max rate: %7.4f %11s" % (0, "(Not in this version of PyDQ)")
(no, Wwthr) = intwt(Nwthr)
for i in range(no):
wname = "%s%d" % (WROP, i)
Ubwr += pdq.GetUtilization(BUS, wname, pdq.TERM)
Ubwr *= Wwthr
#----- Cache measures at CPU[0] only ---------------------------------
i = 0
cname = "%s%d" % (L2C, i)
wname = "%s%d" % (RWHT, i)
Xcpu = pdq.GetThruput(pdq.TERM, wname) * Wrwht
Pcpu += Xcpu * Zrwht
Ucht = pdq.GetUtilization(cname, wname, pdq.TERM) * Wrwht
wname = "%s%d" % (RDOP, i)
Xcpu = pdq.GetThruput(pdq.TERM, wname) * Wrdop
Pcpu += Xcpu * Zrdop
Ucrd = pdq.GetUtilization(cname, wname, pdq.TERM) * Wrdop
Pcpu *= 1.88
if (WBACK):
wname = "%s%d" % (WROP, i)
Ucwr = pdq.GetUtilization(cname, wname, pdq.TERM) * Wwbop