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adaptive.py
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import simplejson
import multiThread
import utils
import numpy as np
def calculate_prefix_sum(cache1,cache2):
cache1.prefix_sum = np.sum(cache1.hist) - np.cumsum(cache1.hist)
cache2.prefix_sum = np.sum(cache2.hist) - np.cumsum(cache2.hist)
def cost(cache1,cache2,l1_pos,l2_pos,L1_lat,L2_lat,size):
mc_l1=mc_l2=0
mc_l1= cache1.prefix_sum[l1_pos]
mc_l2= cache2.prefix_sum[l2_pos]
return (mc_l1*L1_lat) + (mc_l2*L2_lat)
def cost_old(cache1,cache2,l1_pos,l2_pos,L1_lat,L2_lat,size):
mc_l1=mc_l2=0
for i in range(l1_pos,size):
mc_l1+=cache1.hist[i]
for i in range(l2_pos,size):
mc_l2+=cache2.hist[i]
res = (mc_l1*L1_lat) + (mc_l2*L2_lat)
return res
def set_cache(hierarchy,env,shadow_window,racknum,fname):
print racknum
pool = multiThread.ThreadPool(racknum)
for rackid in range(racknum):
pool.add_task(set_cache_size2,hierarchy,env,shadow_window,rackid,fname)
pool.wait_completion()
fd = open(fname, "a")
fd.write("\n")
fd.write("------------------------------")
fd.write("\n")
fd.close()
reset_counters(hierarchy,racknum)
def set_cache_size(hierarchy,env,shadow_window,racknum,fname):
layers=2
fd = open(fname, "a")
fd.write(str(env.now))
fd.write("\n")
# fd2 = open("latency", "a")
for j in range(racknum):
min_cost=None
l1_pos=l2_pos=0
cache_1="1-"+str(j)
cache_2="2-"+str(j)
size = len(hierarchy[cache_1].hist)
threshold=size/racknum
if (float(hierarchy[cache_1].lat_count)) > 0:
l1_lat= float(hierarchy[cache_1].miss_lat)/float(hierarchy[cache_1].lat_count)
else:
l1_lat=0
if (float(hierarchy[cache_2].lat_count)) > 0:
l2_lat= float(hierarchy[cache_2].miss_lat)/float(hierarchy[cache_2].lat_count)
else:
l2_lat=0
current_l1_pos = hierarchy[cache_1].cache.get_size()
current_l2_pos = hierarchy[cache_2].cache.get_size()
calculate_prefix_sum(hierarchy[cache_1],hierarchy[cache_2])
for i in range(1,size):
res = cost(hierarchy[cache_1],hierarchy[cache_2],i,size-i,l1_lat,l2_lat,size)
if min_cost != None:
if ( res < min_cost):
min_cost = res
l1_pos = i
l2_pos = size-i
else:
min_cost = res
l1_pos = i
l2_pos = size-i
# Increase L1 Size
if abs(current_l1_pos-l1_pos) > shadow_window:
win_size = shadow_window
else:
win_size = abs(current_l1_pos-l1_pos)
if (int(l1_pos) > int(current_l1_pos)):
#print j,"l1 bigger"
new_l1_size = current_l1_pos + win_size
if (new_l1_size > (size-threshold)):
new_l1_size = (size-threshold)
new_l2_size = current_l2_pos - win_size
if (new_l2_size < threshold):
#print threshold,new_l2_size
new_l2_size = threshold;
#new_l2_size = 1;
#hierarchy[cache_2].zerosize=true
#Increase L2 Size
else :
#print j,"l2 bigger"
new_l1_size = current_l1_pos - win_size
if (new_l1_size < threshold):
#if (new_l1_size < 0):
#print threshold,new_l1_size
new_l1_size = threshold;
#new_l1_size = 1
#hierarchy[cache_1].zerosize=true
new_l2_size = current_l2_pos + win_size
if (new_l2_size > (size-threshold)):
new_l2_size = (size-threshold);
hierarchy[cache_1].cache.set_size(new_l1_size)
hierarchy[cache_2].cache.set_size(new_l2_size)
print str(cache_1)+","+str(cache_2)+","+str(new_l1_size)+","+ str(new_l2_size)+","+str(env.now)
fd.write(str(cache_1)+","+str(cache_2)+","+str(new_l1_size)+","+ str(new_l2_size)+","+str(env.now))
fd.write("\n")
# fd2.write(str(cache_1)+","+str(cache_2)+","+str(hierarchy[cache_1].miss_lat)+","+ str(hierarchy[cache_2].miss_lat)+","+str(hierarchy[cache_1].lat_count)+","+str(hierarchy[cache_2].lat_count)+","+str(l1_lat)+","+str(l2_lat)+","+str(env.now))
# fd2.write("\n")
#print(str(cache_1)+","+str(cache_2)+","+str(hierarchy[cache_1].miss_lat)+","+ str(hierarchy[cache_2].miss_lat)+","+str(hierarchy[cache_1].lat_count)+","+str(hierarchy[cache_2].lat_count)+","+str(l1_lat)+","+str(l2_lat)+","+str(env.now))
#fd2.write("------------------------------")
#fd2.write("\n")
#fd2.close()
fd.write("------------------------------")
fd.write("\n")
fd.close()
#print str(env.now)
#print "\n"
utils.printHitMissInfo2(hierarchy)
reset_counters(hierarchy,racknum)
def move2layer1(cache1,cache2,pos1,pos2):
orig_size = cache2.get_size()
keys =cache2.keys()[:]
for i in range(pos2,len(keys)):
cache1[keys[i]]=1
# Decay counter list and latency parameter by 2
def reset_counters(hierarchy,rackNum):
headers=["Cache ID", "Miss Count", "Miss Latency", "Cost"]
print "Cache ID\t", "Miss Count\t", "Miss Latency\t", "Cost\t"
for j in range(1,3):
for i in range(0,rackNum):
cache=str(j)+"-"+str(i)
print cache,"\t\t", hierarchy[cache].lat_count,"\t\t", hierarchy[cache].miss_lat,"\t",hierarchy[cache].lat_count*hierarchy[cache].miss_lat
hierarchy[cache].miss_lat = float(hierarchy[cache].miss_lat)/2
for i in range(len(hierarchy[cache].hist)):
hierarchy[cache].hist[i]=float(hierarchy[cache].hist[i])/2
hierarchy[cache].lat_count = 0
return 0
def print_shadows(hierarchy,cache):
fd = open("shadow.log", "a")
fd.write("CacheID:"+ str(cache))
#fd.write(",".join(hierarchy[cache].hist))
simplejson.dump(hierarchy[cache].hist, fd)
fd.write("\n")
fd.close()