configs/example/ruby_mem_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 addToPath('../topologies')
  39
  40 import Options
  41 import Ruby
  42
  43 # Get paths we might need.  It's expected this file is in m5/configs/example.
  44 config_path = os.path.dirname(os.path.abspath(__file__))
  45 config_root = os.path.dirname(config_path)
  46
  47 parser = optparse.OptionParser()
  48 Options.addCommonOptions(parser)
  49
  50 parser.add_option("--maxloads", metavar="N", default=0,
  51                   help="Stop after N loads")
  52 parser.add_option("--progress", type="int", default=1000,
  53                   metavar="NLOADS",
  54                   help="Progress message interval "
  55                   "[default: %default]")
  56 parser.add_option("--num-dmas", type="int", default=0, help="# of dma testers")
  57 parser.add_option("--functional", type="int", default=0,
  58                   help="percentage of accesses that should be functional")
  59 parser.add_option("--suppress-func-warnings", action="store_true",
  60                   help="suppress warnings when functional accesses fail")
  61
  62 #
  63 # Add the ruby specific and protocol specific options
  64 #
  65 Ruby.define_options(parser)
  66
  67 execfile(os.path.join(config_root, "common", "Options.py"))
  68
  69 (options, args) = parser.parse_args()
  70
  71 #
  72 # Set the default cache size and associativity to be very small to encourage
  73 # races between requests and writebacks.
  74 #
  75 options.l1d_size="256B"
  76 options.l1i_size="256B"
  77 options.l2_size="512B"
  78 options.l3_size="1kB"
  79 options.l1d_assoc=2
  80 options.l1i_assoc=2
  81 options.l2_assoc=2
  82 options.l3_assoc=2
  83
  84 if args:
  85      print "Error: script doesn't take any positional arguments"
  86      sys.exit(1)
  87
  88 block_size = 64
  89
  90 if options.num_cpus > block_size:
  91      print "Error: Number of testers %d limited to %d because of false sharing" \
  92            % (options.num_cpus, block_size)
  93      sys.exit(1)
  94
  95 #
  96 # Currently ruby does not support atomic or uncacheable accesses
  97 #
  98 cpus = [ MemTest(atomic = False,
  99                  max_loads = options.maxloads,
 100                  issue_dmas = False,
 101                  percent_functional = options.functional,
 102                  percent_uncacheable = 0,
 103                  progress_interval = options.progress,
 104                  suppress_func_warnings = options.suppress_func_warnings) \
 105          for i in xrange(options.num_cpus) ]
 106
 107 system = System(cpu = cpus,
 108                 funcmem = SimpleMemory(in_addr_map = False),
 109                 funcbus = NoncoherentBus(),
 110                 physmem = SimpleMemory(),
 111                 clk_domain = SrcClockDomain(clock = options.sys_clock),
 112                 mem_ranges = [AddrRange(options.mem_size)])
 113
 114 if options.num_dmas > 0:
 115     dmas = [ MemTest(atomic = False,
 116                      max_loads = options.maxloads,
 117                      issue_dmas = True,
 118                      percent_functional = 0,
 119                      percent_uncacheable = 0,
 120                      progress_interval = options.progress,
 121                      suppress_func_warnings =
 122                                         not options.suppress_func_warnings) \
 123              for i in xrange(options.num_dmas) ]
 124     system.dma_devices = dmas
 125 else:
 126     dmas = []
 127
 128 dma_ports = []
 129 for (i, dma) in enumerate(dmas):
 130     dma_ports.append(dma.test)
 131 Ruby.create_system(options, system, dma_ports = dma_ports)
 132
 133 # Create a top-level voltage domain and clock domain
 134 system.voltage_domain = VoltageDomain(voltage = options.sys_voltage)
 135 system.clk_domain = SrcClockDomain(clock = options.sys_clock,
 136                                    voltage_domain = system.voltage_domain)
 137 # Create a seperate clock domain for Ruby
 138 system.ruby.clk_domain = SrcClockDomain(clock = options.ruby_clock,
 139                                         voltage_domain = system.voltage_domain)
 140
 141 #
 142 # The tester is most effective when randomization is turned on and
 143 # artifical delay is randomly inserted on messages
 144 #
 145 system.ruby.randomization = True
 146
 147 assert(len(cpus) == len(system.ruby._cpu_ports))
 148
 149 for (i, cpu) in enumerate(cpus):
 150     #
 151     # Tie the cpu memtester ports to the correct system ports
 152     #
 153     cpu.test = system.ruby._cpu_ports[i].slave
 154     cpu.functional = system.funcbus.slave
 155
 156     #
 157     # Since the memtester is incredibly bursty, increase the deadlock
 158     # threshold to 5 million cycles
 159     #
 160     system.ruby._cpu_ports[i].deadlock_threshold = 5000000
 161
 162     #
 163     # Ruby doesn't need the backing image of memory when running with
 164     # the tester.
 165     #
 166     system.ruby._cpu_ports[i].access_phys_mem = False
 167
 168 for (i, dma) in enumerate(dmas):
 169     #
 170     # Tie the dma memtester ports to the correct functional port
 171     # Note that the test port has already been connected to the dma_sequencer
 172     #
 173     dma.functional = system.funcbus.slave
 174
 175 # connect reference memory to funcbus
 176 system.funcbus.master = system.funcmem.port
 177
 178 # -----------------------
 179 # run simulation
 180 # -----------------------
 181
 182 root = Root( full_system = False, system = system )
 183 root.system.mem_mode = 'timing'
 184
 185 # Not much point in this being higher than the L1 latency
 186 m5.ticks.setGlobalFrequency('1ns')
 187
 188 # instantiate configuration
 189 m5.instantiate()
 190
 191 # simulate until program terminates
 192 exit_event = m5.simulate(options.abs_max_tick)
 193
 194 print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()