From 641e6028304187468b94753752555e9d082a77ac Mon Sep 17 00:00:00 2001 From: Andreas Hansson Date: Mon, 30 Jun 2014 13:56:04 -0400 Subject: mem: DRAMPower trace formatting script This patch adds a first version of a script that processes the debug output and generates a command trace for DRAMPower. This is work in progress and is intended as a snapshot of ongoing work at this point. The longer term plan is to link in DRAMPower as a library and have one instance of the model per rank, and instantiate it based on a struct passed from gem5. Each command will then be a call to the model and no parsing of traces will be necessary. --- util/drampower_trace.py | 109 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100755 util/drampower_trace.py diff --git a/util/drampower_trace.py b/util/drampower_trace.py new file mode 100755 index 000000000..336922843 --- /dev/null +++ b/util/drampower_trace.py @@ -0,0 +1,109 @@ +#!/usr/bin/env python + +# Copyright (c) 2014 ARM Limited +# All rights reserved +# +# The license below extends only to copyright in the software and shall +# not be construed as granting a license to any other intellectual +# property including but not limited to intellectual property relating +# to a hardware implementation of the functionality of the software +# licensed hereunder. You may use the software subject to the license +# terms below provided that you ensure that this notice is replicated +# unmodified and in its entirety in all distributions of the software, +# modified or unmodified, in source code or in binary form. +# +# 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. +# +# Authors: Andreas Hansson + +import sys +import re +import math + +# This utility script parses through the debug output looking for +# lines printed by the DRAMPowerTrace debug flag. For all such lines, +# it sorts the entries based on the timestamp and outputs it to a new +# file in a format that DRAMPower accepts. +def main(): + if len(sys.argv) != 4: + print "Usage: ", sys.argv[0], " " + exit(-1) + + try: + sim_in = open(sys.argv[1], 'r') + except IOError: + print "Failed to open ", sys.argv[1], " for reading" + exit(-1) + + try: + rank = int(sys.argv[2]) + except ValueError: + print "Failed to determine rank from ", sys.argv[2] + exit(-1) + + try: + cmd_out = open(sys.argv[3], 'w') + except IOError: + print "Failed to open ", sys.argv[3], " for writing" + exit(-1) + + # Due to the out-of-order printing from the event-based DRAM + # controller model, we need to sort the commands by time stamp. We + # use the refresh as the ordering point + history = [] + + # For each line in the debug trace output + for line in sim_in: + # Search for a line with the right format. At the moment this + # is rather dangerous, and could be made more robust. + if re.search('\d+: .*: \d+,[A-Z]+,\d+,\d+', line): + cmd = line.split(' ')[-1] + cmd_cycle, cmd_name, cmd_bank, cmd_rank = cmd.split(',') + + # only look at the commands for the specific rank + if (int(cmd_rank) == rank): + + # Do the conversion to clock cycles so we can use it to + # sort + cmd_cycle = int(cmd_cycle) + + # Append this to the history + history.append((cmd_cycle, cmd_name, cmd_bank)) + + # If we are refreshing, print the history and flush it + if cmd_name == "REF": + history.sort(key = lambda tup: tup[0]) + for (c, n, b) in history: + cmd_entry = "%d,%s,%s\n" % (c, n, b) + cmd_out.write(cmd_entry) + + history = [] + + # We're done + sim_in.close() + cmd_out.close() + +if __name__ == "__main__": + main() + -- cgit v1.2.3