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applyDVFS_args.py
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applyDVFS_args.py
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import subprocess
import sys
import json
CoreLevel = 7
MemoryLevel = 3
CoreFrequencyInput = int(sys.argv[1])
CoreVoltageInput = int(sys.argv[2])
CoreFreq = [853, 860, 870, 880, 890, 900, 910, CoreFrequencyInput]
CoreVoltage = [800, 810, 820, 830, 840, 850, 860, CoreVoltageInput]
MemoryFreq = [168, 400, 450, 1000]
MemoryVoltage = [801, 805, 810, 1001]
def runBashCommand(bashCommand):
"""Runs a bash command
Args:
bashCommand: Command to be run
Returns:
The resulting process
"""
# print("Running %s" % (bashCommand))
seconds = 10
try:
if "3.6" in sys.version:
process = subprocess.run(bashCommand.split(),
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
stdin=subprocess.PIPE,
check=True,
timeout=seconds)
return process.stdout.decode("utf-8")
else:
process = subprocess.run(bashCommand.split(),
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
check=True,
text=True,
timeout=seconds)
return process.stdout
except subprocess.CalledProcessError as e:
print()
print("\tERROR: Execution warmup ", str(e.returncode))
print()
except subprocess.TimeoutExpired as t:
print()
print("\tERROR: Timeout warmup")
print()
sys.exit(-1)
def preDVFSconfig():
# Enables Overdrive
result = runBashCommand("rocm-smi --setfan 255")
if "Successfully" not in result:
print("Not able to reset GPU")
sys.exit(-1)
# Enables Overdrive
result = runBashCommand("rocm-smi --autorespond y --setoverdrive 20")
if "Successfully" not in result:
print("Not able to reset GPU")
sys.exit(-1)
result = runBashCommand("rocm-smi --autorespond y --setpoweroverdrive 300")
if "Successfully" not in result:
print("Not able to reset GPU")
sys.exit(-1)
# Set Core performance level to the one to be tested
if setPerformanceLevel("core", 0) == False:
print(" Not able to select core level.")
return False
# Set Memory performance level to the highest
if setPerformanceLevel("mem", 0) == False:
print(" Not able to select memory level.")
return False
return True
def runDVFSscript(command):
"""Runs the DVFS script
Args:
command: Command to be run
Returns:
The resulting process
"""
script = "./DVFS " + str(command)
process = runBashCommand(script)
return process
def setPerformanceLevel(source, level):
"""Sets a given performance level for the GPU Core and Memory.
Args:
source: string containing word "core" or "mem"
level: an integer between 0-7 for core and 0-3 memory
Returns:
True - if action is sucessful.
False - not possible to apply configuration.
"""
if source == "core":
assert level in list(range(
0, 8)), "Core Performance Level betwen 0 and 7."
result = runDVFSscript("-P " + str(level))
if "ERROR" in result:
return False
elif source == "mem":
assert level in list(range(
0, 4)), "Core Performance Level betwen 0 and 3."
result = runDVFSscript("-p " + str(level))
if "ERROR" in result:
return False
else:
print("Not valid source used - core or mem")
return False
return True
def editPerformanceLevel(source, level, frequency, voltage):
"""Edits a given performance level for the GPU Core and Memory.
Args:
source: string containing word "core" or "mem"
level: an integer between 0-7 for core and 0-3 memory
frequency: an integer indicating the frequency
voltage: an integer indicating the voltage
Returns:
True - if action is sucessful.
False - not possible to apply configuration.
"""
if source == "core":
assert level in list(range(
0, 8)), "Core Performance Level betwen 0 and 7."
result = runDVFSscript("-L " + str(level) + " -F " + str(frequency) +
" -V " + str(voltage))
if "ERROR" in result:
return False
elif source == "mem":
assert level in list(range(
0, 4)), "Core Performance Level betwen 0 and 3."
result = runDVFSscript("-l " + str(level) + " -f " + str(frequency) +
" -v " + str(voltage))
if "ERROR" in result:
return False
else:
print("Not valid source used - core or mem")
return False
return True
def editAllPerformanceLevels():
for level in range(0, 4):
result = editPerformanceLevel("mem", level, MemoryFreq[level], MemoryVoltage[level])
if result == False:
return False
for level in range(0, 8):
result = editPerformanceLevel("core", level, CoreFreq[level], CoreVoltage[level])
if result == False:
return False
return True
def currentPerfLevel():
"""Gets the current applied performance level for the Core and Memory
Returns:
Tuple on the form (core, memory) indicating the current
performance level of the two domains
"""
global CoreFreq
global MemoryFreq
result = runBashCommand("rocm-smi")
core = -1
mem = -1
line = result.split('\n')
line = line[5].split(" ")
# Find indices of Core and Mem frequency
indices = [i for i, s in enumerate(line) if 'Mhz' in s]
core = line[indices[0]].replace("Mhz", '')
mem = line[indices[1]].replace("Mhz", '')
print(core + "," + mem)
return CoreFreq.index(int(core)), MemoryFreq.index(int(mem))
def currentVoltageIsRespected(currentVoltCore, currentVoltMemory):
"""Gets the current voltage applied to the GPU Core
Args:
currentVolt - a path to a filepath.
Returns:
True if the current applied voltage respects the
intended one.
"""
result = runBashCommand("rocm-smi --showvoltage --json")
# Find core voltage
try:
volt= json.loads(result)["card1"]["Voltage (mV)"]
except:
print("Not able to get voltage")
return False, -1
if abs(int(volt) - int(currentVoltCore)) <= 5:
return True, volt
if abs(int(volt) - int(currentVoltMemory)) <= 5:
return True, volt
return False, volt
if preDVFSconfig() == False:
print("not able to update table for current run")
sys.exit(-1)
if editAllPerformanceLevels() == False:
print("not able to update table for current run")
sys.exit(-1)
# Set Core performance level to the one to be tested
if setPerformanceLevel("core", CoreLevel) == False:
print(" Not able to select core level.")
sys.exit(-1)
# Set Memory performance level to the highest
if setPerformanceLevel("mem", MemoryLevel) == False:
print(" Not able to select memory level.")
sys.exit(-1)
# Run warm up DVFS program
runBashCommand("./warmup")
# Get current DVFS settings - to make sure it was correctly applyed
cur = currentPerfLevel()
print(cur)
print("%s, %s" % (CoreVoltage[cur[0]], MemoryVoltage[cur[1]]))
if cur != (CoreLevel, MemoryLevel):
print(" Selected Performance Levels don't match current ones. %s != (%d, %d)" % (cur, CoreLevel, MemoryLevel))
sys.exit(-1)
# Checks if the intended voltage is correctly applied to the GPU
result, volt = currentVoltageIsRespected(CoreVoltage[CoreLevel], MemoryVoltage[MemoryLevel])
print(result, volt)
if result == False:
print("Current voltage is %d != Core: %d | Memory: %d" % (int(volt), int(CoreVoltage[CoreLevel]), int(MemoryVoltage[MemoryLevel])))
sys.exit(-1)
sys.exit(0)