tests/configs/memtest-ruby.py

   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
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   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
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  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
  30 import m5
  31 from m5.objects import *
  32 from m5.defines import buildEnv
  33 from m5.util import addToPath
  34 import os, optparse, sys
  35
  36 if buildEnv['FULL_SYSTEM']:
  37     panic("This script requires system-emulation mode (*_SE).")
  38
  39 # Get paths we might need
  40 config_path = os.path.dirname(os.path.abspath(__file__))
  41 config_root = os.path.dirname(config_path)
  42 m5_root = os.path.dirname(config_root)
  43 addToPath(config_root+'/configs/common')
  44 addToPath(config_root+'/configs/ruby')
  45
  46 import Ruby
  47
  48 parser = optparse.OptionParser()
  49
  50 #
  51 # Add the ruby specific and protocol specific options
  52 #
  53 Ruby.define_options(parser)
  54
  55 execfile(os.path.join(config_root, "configs/common", "Options.py"))
  56
  57 (options, args) = parser.parse_args()
  58
  59 #
  60 # Set the default cache size and associativity to be very small to encourage
  61 # races between requests and writebacks.
  62 #
  63 options.l1d_size="256B"
  64 options.l1i_size="256B"
  65 options.l2_size="512B"
  66 options.l3_size="1kB"
  67 options.l1d_assoc=2
  68 options.l1i_assoc=2
  69 options.l2_assoc=2
  70 options.l3_assoc=2
  71
  72 #MAX CORES IS 8 with the fals sharing method
  73 nb_cores = 8
  74
  75 # ruby does not support atomic, functional, or uncacheable accesses
  76 cpus = [ MemTest(atomic=False, percent_functional=0, \
  77                  percent_uncacheable=0) \
  78          for i in xrange(nb_cores) ]
  79
  80 # overwrite options.num_cpus with the nb_cores value
  81 options.num_cpus = nb_cores
  82
  83 # system simulated
  84 system = System(cpu = cpus,
  85                 funcmem = PhysicalMemory(),
  86                 physmem = PhysicalMemory())
  87
  88 system.ruby = Ruby.create_system(options, system)
  89
  90 assert(len(cpus) == len(system.ruby._cpu_ruby_ports))
  91
  92 for (i, ruby_port) in enumerate(system.ruby._cpu_ruby_ports):
  93      #
  94      # Tie the cpu test and functional ports to the ruby cpu ports and
  95      # physmem, respectively
  96      #
  97      cpus[i].test = ruby_port.port
  98      cpus[i].functional = system.funcmem.port
  99
 100      #
 101      # Since the memtester is incredibly bursty, increase the deadlock
 102      # threshold to 1 million cycles
 103      #
 104      ruby_port.deadlock_threshold = 1000000
 105
 106 # -----------------------
 107 # run simulation
 108 # -----------------------
 109
 110 root = Root(system = system)
 111 root.system.mem_mode = 'timing'
 112
 113 # Not much point in this being higher than the L1 latency
 114 m5.ticks.setGlobalFrequency('1ns')