configs/example/ruby_random_test.py

   1 # Copyright (c) 2006-2007 The Regents of The University of Michigan
   2 # Copyright (c) 2009 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 #          Brad Beckmann
  30
  31 import m5
  32 from m5.objects import *
  33 from m5.defines import buildEnv
  34 from m5.util import addToPath
  35 import os, optparse, sys
  36 addToPath('../common')
  37 addToPath('../ruby')
  38
  39 import Ruby
  40
  41 if buildEnv['FULL_SYSTEM']:
  42     panic("This script requires system-emulation mode (*_SE).")
  43
  44 # Get paths we might need.  It's expected this file is in m5/configs/example.
  45 config_path = os.path.dirname(os.path.abspath(__file__))
  46 config_root = os.path.dirname(config_path)
  47 m5_root = os.path.dirname(config_root)
  48
  49 parser = optparse.OptionParser()
  50
  51 parser.add_option("-l", "--checks", metavar="N", default=100,
  52                   help="Stop after N checks (loads)")
  53 parser.add_option("-f", "--wakeup_freq", metavar="N", default=10,
  54                   help="Wakeup every N cycles")
  55
  56 #
  57 # Add the ruby specific and protocol specific options
  58 #
  59 Ruby.define_options(parser)
  60
  61 execfile(os.path.join(config_root, "common", "Options.py"))
  62
  63 (options, args) = parser.parse_args()
  64
  65 #
  66 # Set the default cache size and associativity to be very small to encourage
  67 # races between requests and writebacks.
  68 #
  69 options.l1d_size="256B"
  70 options.l1i_size="256B"
  71 options.l2_size="512B"
  72 options.l3_size="1kB"
  73 options.l1d_assoc=2
  74 options.l1i_assoc=2
  75 options.l2_assoc=2
  76 options.l3_assoc=2
  77
  78 if args:
  79      print "Error: script doesn't take any positional arguments"
  80      sys.exit(1)
  81
  82 #
  83 # Create the ruby random tester
  84 #
  85
  86 # Check the protocol
  87 check_flush = False
  88 if buildEnv['PROTOCOL'] == 'MOESI_hammer':
  89     check_flush = True
  90
  91 tester = RubyTester(check_flush = check_flush,
  92                     checks_to_complete = options.checks,
  93                     wakeup_frequency = options.wakeup_freq)
  94
  95 #
  96 # Create the M5 system.  Note that the PhysicalMemory Object isn't
  97 # actually used by the rubytester, but is included to support the
  98 # M5 memory size == Ruby memory size checks
  99 #
 100 system = System(tester = tester, physmem = PhysicalMemory())
 101
 102 Ruby.create_system(options, system)
 103
 104 assert(options.num_cpus == len(system.ruby._cpu_ruby_ports))
 105
 106 #
 107 # The tester is most effective when randomization is turned on and
 108 # artifical delay is randomly inserted on messages
 109 #
 110 system.ruby.randomization = True
 111
 112 for ruby_port in system.ruby._cpu_ruby_ports:
 113     #
 114     # Tie the ruby tester ports to the ruby cpu ports
 115     #
 116     tester.cpuPort = ruby_port.port
 117
 118     #
 119     # Tell each sequencer this is the ruby tester so that it
 120     # copies the subblock back to the checker
 121     #
 122     ruby_port.using_ruby_tester = True
 123
 124     #
 125     # Ruby doesn't need the backing image of memory when running with
 126     # the tester.
 127     #
 128     ruby_port.access_phys_mem = False
 129
 130 # -----------------------
 131 # run simulation
 132 # -----------------------
 133
 134 root = Root( system = system )
 135 root.system.mem_mode = 'timing'
 136
 137 # Not much point in this being higher than the L1 latency
 138 m5.ticks.setGlobalFrequency('1ns')
 139
 140 # instantiate configuration
 141 m5.instantiate()
 142
 143 # simulate until program terminates
 144 exit_event = m5.simulate(options.maxtick)
 145
 146 print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()