blob: 61a316a99c2773ef11a40875993b1773a93205cf [file] [log] [blame]
# Copyright (c) 2014 Mark D. Hill and David A. Wood
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
from configparser import ConfigParser
import string, sys, subprocess, os
# Compile DSENT to generate the Python module and then import it.
# This script assumes it is executed from the gem5 root.
print("Attempting compilation")
from subprocess import call
src_dir = "ext/dsent"
build_dir = "build/ext/dsent"
if not os.path.exists(build_dir):
os.makedirs(build_dir)
os.chdir(build_dir)
error = call(["cmake", f"../../../{src_dir}"])
if error:
print("Failed to run cmake")
exit(-1)
error = call(["make"])
if error:
print("Failed to run make")
exit(-1)
print("Compiled dsent")
os.chdir("../../../")
sys.path.append("build/ext/dsent")
import dsent
# Parse gem5 config.ini file for the configuration parameters related to
# the on-chip network.
def parseConfig(config_file):
config = ConfigParser()
if not config.read(config_file):
print(("ERROR: config file '", config_file, "' not found"))
sys.exit(1)
if not config.has_section("system.ruby.network"):
print(("ERROR: Ruby network not found in '", config_file))
sys.exit(1)
if config.get("system.ruby.network", "type") != "GarnetNetwork_d":
print(("ERROR: Garnet network not used in '", config_file))
sys.exit(1)
number_of_virtual_networks = config.getint(
"system.ruby.network", "number_of_virtual_networks"
)
vcs_per_vnet = config.getint("system.ruby.network", "vcs_per_vnet")
buffers_per_data_vc = config.getint(
"system.ruby.network", "buffers_per_data_vc"
)
buffers_per_control_vc = config.getint(
"system.ruby.network", "buffers_per_ctrl_vc"
)
ni_flit_size_bits = 8 * config.getint(
"system.ruby.network", "ni_flit_size"
)
routers = config.get("system.ruby.network", "routers").split()
int_links = config.get("system.ruby.network", "int_links").split()
ext_links = config.get("system.ruby.network", "ext_links").split()
return (
config,
number_of_virtual_networks,
vcs_per_vnet,
buffers_per_data_vc,
buffers_per_control_vc,
ni_flit_size_bits,
routers,
int_links,
ext_links,
)
def getClock(obj, config):
if config.get(obj, "type") == "SrcClockDomain":
return config.getint(obj, "clock")
if config.get(obj, "type") == "DerivedClockDomain":
source = config.get(obj, "clk_domain")
divider = config.getint(obj, "clk_divider")
return getClock(source, config) / divider
source = config.get(obj, "clk_domain")
return getClock(source, config)
## Compute the power consumed by the given router
def computeRouterPowerAndArea(
router,
stats_file,
config,
int_links,
ext_links,
number_of_virtual_networks,
vcs_per_vnet,
buffers_per_data_vc,
buffers_per_control_vc,
ni_flit_size_bits,
):
frequency = getClock(router, config)
num_ports = 0
for int_link in int_links:
if (
config.get(int_link, "node_a") == router
or config.get(int_link, "node_b") == router
):
num_ports += 1
for ext_link in ext_links:
if config.get(ext_link, "int_node") == router:
num_ports += 1
power = dsent.computeRouterPowerAndArea(
frequency,
num_ports,
num_ports,
number_of_virtual_networks,
vcs_per_vnet,
buffers_per_data_vc,
ni_flit_size_bits,
)
print(f"{router} Power: ", power)
## Compute the power consumed by the given link
def computeLinkPower(link, stats_file, config, sim_seconds):
frequency = getClock(link + ".nls0", config)
power = dsent.computeLinkPower(frequency)
print(f"{link}.nls0 Power: ", power)
frequency = getClock(link + ".nls1", config)
power = dsent.computeLinkPower(frequency)
print(f"{link}.nls1 Power: ", power)
def parseStats(
stats_file,
config,
router_config_file,
link_config_file,
routers,
int_links,
ext_links,
number_of_virtual_networks,
vcs_per_vnet,
buffers_per_data_vc,
buffers_per_control_vc,
ni_flit_size_bits,
):
# Open the stats.txt file and parse it to for the required numbers
# and the number of routers.
try:
stats_handle = open(stats_file, "r")
stats_handle.close()
except IOError:
print("Failed to open ", stats_file, " for reading")
exit(-1)
# Now parse the stats
pattern = "sim_seconds"
lines = string.split(
subprocess.check_output(["grep", pattern, stats_file]), "\n", -1
)
assert len(lines) >= 1
## Assume that the first line is the one required
[l1, l2, l3] = lines[0].partition(" ")
l4 = l3.strip().partition(" ")
simulation_length_in_seconds = float(l4[0])
# Initialize DSENT with a configuration file
dsent.initialize(router_config_file)
# Compute the power consumed by the routers
for router in routers:
computeRouterPowerAndArea(
router,
stats_file,
config,
int_links,
ext_links,
number_of_virtual_networks,
vcs_per_vnet,
buffers_per_data_vc,
buffers_per_control_vc,
ni_flit_size_bits,
)
# Finalize DSENT
dsent.finalize()
# Initialize DSENT with a configuration file
dsent.initialize(link_config_file)
# Compute the power consumed by the links
for link in int_links:
computeLinkPower(
link, stats_file, config, simulation_length_in_seconds
)
for link in ext_links:
computeLinkPower(
link, stats_file, config, simulation_length_in_seconds
)
# Finalize DSENT
dsent.finalize()
# This script parses the config.ini and the stats.txt from a run and
# generates the power and the area of the on-chip network using DSENT
def main():
if len(sys.argv) != 5:
print(
"Usage: ",
sys.argv[0],
" <gem5 root directory> "
"<simulation directory> <router config file> <link config file>",
)
exit(-1)
print(
"WARNING: configuration files for DSENT and McPAT are separate. "
"Changes made to one are not reflected in the other."
)
(
config,
number_of_virtual_networks,
vcs_per_vnet,
buffers_per_data_vc,
buffers_per_control_vc,
ni_flit_size_bits,
routers,
int_links,
ext_links,
) = parseConfig(f"{sys.argv[1]}/{sys.argv[2]}/config.ini")
parseStats(
f"{sys.argv[1]}/{sys.argv[2]}/stats.txt",
config,
sys.argv[3],
sys.argv[4],
routers,
int_links,
ext_links,
number_of_virtual_networks,
vcs_per_vnet,
buffers_per_data_vc,
buffers_per_control_vc,
ni_flit_size_bits,
)
if __name__ == "__main__":
main()