Ruby.py revision 9826:014ff1fbff6d 
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14# Copyright (c) 2009 Advanced Micro Devices, Inc.
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39#
40# Authors: Brad Beckmann
41
42import math
43import m5
44from m5.objects import *
45from m5.defines import buildEnv
46
47def define_options(parser):
48    # By default, ruby uses the simple timing cpu
49    parser.set_defaults(cpu_type="timing")
50
51    parser.add_option("--ruby-clock", action="store", type="string",
52                      default='2GHz',
53                      help="Clock for blocks running at Ruby system's speed")
54
55    # ruby network options
56    parser.add_option("--topology", type="string", default="Crossbar",
57                 help="check src/mem/ruby/network/topologies for complete set")
58    parser.add_option("--mesh-rows", type="int", default=1,
59                      help="the number of rows in the mesh topology")
60    parser.add_option("--garnet-network", type="choice",
61                      choices=['fixed', 'flexible'], help="'fixed'|'flexible'")
62    parser.add_option("--network-fault-model", action="store_true", default=False,
63                      help="enable network fault model: see src/mem/ruby/network/fault_model/")
64
65    # ruby mapping options
66    parser.add_option("--numa-high-bit", type="int", default=0,
67                      help="high order address bit to use for numa mapping. " \
68                           "0 = highest bit, not specified = lowest bit")
69
70    # ruby sparse memory options
71    parser.add_option("--use-map", action="store_true", default=False)
72    parser.add_option("--map-levels", type="int", default=4)
73
74    parser.add_option("--recycle-latency", type="int", default=10,
75                      help="Recycle latency for ruby controller input buffers")
76
77    parser.add_option("--random_seed", type="int", default=1234,
78                      help="Used for seeding the random number generator")
79
80    parser.add_option("--ruby_stats", type="string", default="ruby.stats")
81
82    protocol = buildEnv['PROTOCOL']
83    exec "import %s" % protocol
84    eval("%s.define_options(parser)" % protocol)
85
86def create_topology(controllers, options):
87    """ Called from create_system in configs/ruby/<protocol>.py
88        Must return an object which is a subclass of BaseTopology
89        found in configs/topologies/BaseTopology.py
90        This is a wrapper for the legacy topologies.
91    """
92    exec "import %s as Topo" % options.topology
93    topology = eval("Topo.%s(controllers)" % options.topology)
94    return topology
95
96def create_system(options, system, piobus = None, dma_ports = []):
97
98    system.ruby = RubySystem(stats_filename = options.ruby_stats,
99                             no_mem_vec = options.use_map)
100    ruby = system.ruby
101
102    protocol = buildEnv['PROTOCOL']
103    exec "import %s" % protocol
104    try:
105        (cpu_sequencers, dir_cntrls, topology) = \
106             eval("%s.create_system(options, system, piobus, dma_ports, ruby)"
107                  % protocol)
108    except:
109        print "Error: could not create sytem for ruby protocol %s" % protocol
110        raise
111
112    # Create a port proxy for connecting the system port. This is
113    # independent of the protocol and kept in the protocol-agnostic
114    # part (i.e. here).
115    sys_port_proxy = RubyPortProxy(ruby_system = ruby)
116    # Give the system port proxy a SimObject parent without creating a
117    # full-fledged controller
118    system.sys_port_proxy = sys_port_proxy
119
120    # Connect the system port for loading of binaries etc
121    system.system_port = system.sys_port_proxy.slave
122
123
124    #
125    # Set the network classes based on the command line options
126    #
127    if options.garnet_network == "fixed":
128        class NetworkClass(GarnetNetwork_d): pass
129        class IntLinkClass(GarnetIntLink_d): pass
130        class ExtLinkClass(GarnetExtLink_d): pass
131        class RouterClass(GarnetRouter_d): pass
132    elif options.garnet_network == "flexible":
133        class NetworkClass(GarnetNetwork): pass
134        class IntLinkClass(GarnetIntLink): pass
135        class ExtLinkClass(GarnetExtLink): pass
136        class RouterClass(GarnetRouter): pass
137    else:
138        class NetworkClass(SimpleNetwork): pass
139        class IntLinkClass(SimpleIntLink): pass
140        class ExtLinkClass(SimpleExtLink): pass
141        class RouterClass(Switch): pass
142
143    #
144    # Important: the topology must be instantiated before the network and after
145    # the controllers. Hence the separation between topology definition and
146    # instantiation.
147    #
148
149    routers, int_links, ext_links = topology.makeTopology(options,
150                                    IntLinkClass, ExtLinkClass, RouterClass)
151    network = NetworkClass(ruby_system = ruby, routers = routers,
152                           int_links = int_links, ext_links = ext_links,
153                           topology = topology.description)
154
155    if options.network_fault_model:
156        assert(options.garnet_network == "fixed")
157        network.enable_fault_model = True
158        network.fault_model = FaultModel()
159
160    #
161    # Loop through the directory controlers.
162    # Determine the total memory size of the ruby system and verify it is equal
163    # to physmem.  However, if Ruby memory is using sparse memory in SE
164    # mode, then the system should not back-up the memory state with
165    # the Memory Vector and thus the memory size bytes should stay at 0.
166    # Also set the numa bits to the appropriate values.
167    #
168    total_mem_size = MemorySize('0B')
169
170    dir_bits = int(math.log(options.num_dirs, 2))
171    ruby.block_size_bytes = options.cacheline_size
172    block_size_bits = int(math.log(options.cacheline_size, 2))
173
174    if options.numa_high_bit:
175        numa_bit = options.numa_high_bit
176    else:
177        # if the numa_bit is not specified, set the directory bits as the
178        # lowest bits above the block offset bits, and the numa_bit as the
179        # highest of those directory bits
180        numa_bit = block_size_bits + dir_bits - 1
181
182    for dir_cntrl in dir_cntrls:
183        total_mem_size.value += dir_cntrl.directory.size.value
184        dir_cntrl.directory.numa_high_bit = numa_bit
185
186    phys_mem_size = sum(map(lambda r: r.size(), system.mem_ranges))
187    assert(total_mem_size.value == phys_mem_size)
188
189    ruby_profiler = RubyProfiler(ruby_system = ruby,
190                                 num_of_sequencers = len(cpu_sequencers))
191    ruby.network = network
192    ruby.profiler = ruby_profiler
193    ruby.mem_size = total_mem_size
194    ruby._cpu_ruby_ports = cpu_sequencers
195    ruby.random_seed    = options.random_seed
196