configs/ruby/Ruby.py

   1 # Copyright (c) 2012 ARM Limited
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  11 # modified or unmodified, in source code or in binary form.
  12 #
  13 # Copyright (c) 2006-2007 The Regents of The University of Michigan
  14 # Copyright (c) 2009 Advanced Micro Devices, Inc.
  15 # All rights reserved.
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  28 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  38 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39 #
  40 # Authors: Brad Beckmann
  41
  42 import math
  43 import m5
  44 from m5.objects import *
  45 from m5.defines import buildEnv
  46
  47 def define_options(parser):
  48     # By default, ruby uses the simple timing cpu
  49     parser.set_defaults(cpu_type="timing")
  50
  51     # ruby network options
  52     parser.add_option("--topology", type="string", default="Crossbar",
  53                  help="check src/mem/ruby/network/topologies for complete set")
  54     parser.add_option("--mesh-rows", type="int", default=1,
  55                       help="the number of rows in the mesh topology")
  56     parser.add_option("--garnet-network", type="choice",
  57                       choices=['fixed', 'flexible'], help="'fixed'|'flexible'")
  58     parser.add_option("--network-fault-model", action="store_true", default=False,
  59                       help="enable network fault model: see src/mem/ruby/network/fault_model/")
  60
  61     # ruby mapping options
  62     parser.add_option("--numa-high-bit", type="int", default=0,
  63                       help="high order address bit to use for numa mapping. " \
  64                            "0 = highest bit, not specified = lowest bit")
  65
  66     # ruby sparse memory options
  67     parser.add_option("--use-map", action="store_true", default=False)
  68     parser.add_option("--map-levels", type="int", default=4)
  69
  70     parser.add_option("--recycle-latency", type="int", default=10,
  71                       help="Recycle latency for ruby controller input buffers")
  72
  73     parser.add_option("--random_seed", type="int", default=1234,
  74                       help="Used for seeding the random number generator")
  75
  76     parser.add_option("--ruby_stats", type="string", default="ruby.stats")
  77
  78     protocol = buildEnv['PROTOCOL']
  79     exec "import %s" % protocol
  80     eval("%s.define_options(parser)" % protocol)
  81
  82 def create_topology(controllers, options):
  83     """ Called from create_system in configs/ruby/<protocol>.py
  84         Must return an object which is a subclass of BaseTopology
  85         found in configs/topologies/BaseTopology.py
  86         This is a wrapper for the legacy topologies.
  87     """
  88     exec "import %s as Topo" % options.topology
  89     topology = eval("Topo.%s(controllers)" % options.topology)
  90     return topology
  91
  92 def create_system(options, system, piobus = None, dma_ports = []):
  93
  94     system.ruby = RubySystem(clock = options.clock,
  95                              stats_filename = options.ruby_stats,
  96                              no_mem_vec = options.use_map)
  97     ruby = system.ruby
  98
  99     protocol = buildEnv['PROTOCOL']
 100     exec "import %s" % protocol
 101     try:
 102         (cpu_sequencers, dir_cntrls, topology) = \
 103              eval("%s.create_system(options, system, piobus, dma_ports, ruby)"
 104                   % protocol)
 105     except:
 106         print "Error: could not create sytem for ruby protocol %s" % protocol
 107         raise
 108
 109     # Create a port proxy for connecting the system port. This is
 110     # independent of the protocol and kept in the protocol-agnostic
 111     # part (i.e. here).
 112     sys_port_proxy = RubyPortProxy(ruby_system = ruby)
 113     # Give the system port proxy a SimObject parent without creating a
 114     # full-fledged controller
 115     system.sys_port_proxy = sys_port_proxy
 116
 117     # Connect the system port for loading of binaries etc
 118     system.system_port = system.sys_port_proxy.slave
 119
 120
 121     #
 122     # Set the network classes based on the command line options
 123     #
 124     if options.garnet_network == "fixed":
 125         class NetworkClass(GarnetNetwork_d): pass
 126         class IntLinkClass(GarnetIntLink_d): pass
 127         class ExtLinkClass(GarnetExtLink_d): pass
 128         class RouterClass(GarnetRouter_d): pass
 129     elif options.garnet_network == "flexible":
 130         class NetworkClass(GarnetNetwork): pass
 131         class IntLinkClass(GarnetIntLink): pass
 132         class ExtLinkClass(GarnetExtLink): pass
 133         class RouterClass(GarnetRouter): pass
 134     else:
 135         class NetworkClass(SimpleNetwork): pass
 136         class IntLinkClass(SimpleIntLink): pass
 137         class ExtLinkClass(SimpleExtLink): pass
 138         class RouterClass(Switch): pass
 139
 140     #
 141     # Important: the topology must be instantiated before the network and after
 142     # the controllers. Hence the separation between topology definition and
 143     # instantiation.
 144     #
 145
 146     routers, int_links, ext_links = topology.makeTopology(options,
 147                                     IntLinkClass, ExtLinkClass, RouterClass)
 148     network = NetworkClass(ruby_system = ruby, routers = routers,
 149                            int_links = int_links, ext_links = ext_links,
 150                            topology = topology.description)
 151
 152     if options.network_fault_model:
 153         assert(options.garnet_network == "fixed")
 154         network.enable_fault_model = True
 155         network.fault_model = FaultModel()
 156
 157     #
 158     # Loop through the directory controlers.
 159     # Determine the total memory size of the ruby system and verify it is equal
 160     # to physmem.  However, if Ruby memory is using sparse memory in SE
 161     # mode, then the system should not back-up the memory state with
 162     # the Memory Vector and thus the memory size bytes should stay at 0.
 163     # Also set the numa bits to the appropriate values.
 164     #
 165     total_mem_size = MemorySize('0B')
 166
 167     dir_bits = int(math.log(options.num_dirs, 2))
 168     ruby.block_size_bytes = options.cacheline_size
 169     block_size_bits = int(math.log(options.cacheline_size, 2))
 170
 171     if options.numa_high_bit:
 172         numa_bit = options.numa_high_bit
 173     else:
 174         # if the numa_bit is not specified, set the directory bits as the
 175         # lowest bits above the block offset bits, and the numa_bit as the
 176         # highest of those directory bits
 177         numa_bit = block_size_bits + dir_bits - 1
 178
 179     for dir_cntrl in dir_cntrls:
 180         total_mem_size.value += dir_cntrl.directory.size.value
 181         dir_cntrl.directory.numa_high_bit = numa_bit
 182
 183     phys_mem_size = sum(map(lambda mem: mem.range.size(),
 184                             system.memories.unproxy(system)))
 185     assert(total_mem_size.value == phys_mem_size)
 186
 187     ruby_profiler = RubyProfiler(ruby_system = ruby,
 188                                  num_of_sequencers = len(cpu_sequencers))
 189     ruby.network = network
 190     ruby.profiler = ruby_profiler
 191     ruby.mem_size = total_mem_size
 192     ruby._cpu_ruby_ports = cpu_sequencers
 193     ruby.random_seed    = options.random_seed