memtest-ruby.py revision 8920
1# Copyright (c) 2006-2007 The Regents of The University of Michigan 2# Copyright (c) 2010 Advanced Micro Devices, Inc. 3# All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions are 7# met: redistributions of source code must retain the above copyright 8# notice, this list of conditions and the following disclaimer; 9# redistributions in binary form must reproduce the above copyright 10# notice, this list of conditions and the following disclaimer in the 11# documentation and/or other materials provided with the distribution; 12# neither the name of the copyright holders nor the names of its 13# contributors may be used to endorse or promote products derived from 14# this software without specific prior written permission. 15# 16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27# 28# Authors: Ron Dreslinski 29 30import m5 31from m5.objects import * 32from m5.defines import buildEnv 33from m5.util import addToPath 34import os, optparse, sys 35 36# Get paths we might need 37config_path = os.path.dirname(os.path.abspath(__file__)) 38config_root = os.path.dirname(config_path) 39m5_root = os.path.dirname(config_root) 40addToPath(config_root+'/configs/common') 41addToPath(config_root+'/configs/ruby') 42 43import Ruby 44import Options 45 46parser = optparse.OptionParser() 47Options.addCommonOptions(parser) 48 49# Add the ruby specific and protocol specific options 50Ruby.define_options(parser) 51 52(options, args) = parser.parse_args() 53 54# 55# Set the default cache size and associativity to be very small to encourage 56# races between requests and writebacks. 57# 58options.l1d_size="256B" 59options.l1i_size="256B" 60options.l2_size="512B" 61options.l3_size="1kB" 62options.l1d_assoc=2 63options.l1i_assoc=2 64options.l2_assoc=2 65options.l3_assoc=2 66 67#MAX CORES IS 8 with the fals sharing method 68nb_cores = 8 69 70# ruby does not support atomic, functional, or uncacheable accesses 71cpus = [ MemTest(atomic=False, percent_functional=50, 72 percent_uncacheable=0, suppress_func_warnings=True) \ 73 for i in xrange(nb_cores) ] 74 75# overwrite options.num_cpus with the nb_cores value 76options.num_cpus = nb_cores 77 78# system simulated 79system = System(cpu = cpus, 80 funcmem = PhysicalMemory(), 81 physmem = PhysicalMemory()) 82 83Ruby.create_system(options, system) 84 85assert(len(cpus) == len(system.ruby._cpu_ruby_ports)) 86 87for (i, ruby_port) in enumerate(system.ruby._cpu_ruby_ports): 88 # 89 # Tie the cpu test and functional ports to the ruby cpu ports and 90 # physmem, respectively 91 # 92 cpus[i].test = ruby_port.slave 93 cpus[i].functional = system.funcmem.port 94 95 # 96 # Since the memtester is incredibly bursty, increase the deadlock 97 # threshold to 1 million cycles 98 # 99 ruby_port.deadlock_threshold = 1000000 100 101 # 102 # Ruby doesn't need the backing image of memory when running with 103 # the tester. 104 # 105 ruby_port.access_phys_mem = False 106 107# ----------------------- 108# run simulation 109# ----------------------- 110 111root = Root(full_system = False, system = system) 112root.system.mem_mode = 'timing' 113 114# Not much point in this being higher than the L1 latency 115m5.ticks.setGlobalFrequency('1ns') 116