Ruby.py revision 8839 
1# Copyright (c) 2012 ARM Limited
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13# Copyright (c) 2006-2007 The Regents of The University of Michigan
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    # ruby network options
49    parser.add_option("--topology", type="string", default="Crossbar",
50                 help="check src/mem/ruby/network/topologies for complete set")
51    parser.add_option("--mesh-rows", type="int", default=1,
52                      help="the number of rows in the mesh topology")
53    parser.add_option("--garnet-network", type="string", default=None,
54                      help="'fixed'|'flexible'")
55    parser.add_option("--network-fault-model", action="store_true", default=False,
56                      help="enable network fault model: see src/mem/ruby/network/fault_model/")
57
58    # ruby mapping options
59    parser.add_option("--numa-high-bit", type="int", default=0,
60                      help="high order address bit to use for numa mapping. " \
61                           "0 = highest bit, not specified = lowest bit")
62
63    # ruby sparse memory options
64    parser.add_option("--use-map", action="store_true", default=False)
65    parser.add_option("--map-levels", type="int", default=4)
66
67    parser.add_option("--recycle-latency", type="int", default=10,
68                      help="Recycle latency for ruby controller input buffers")
69
70    parser.add_option("--random_seed", type="int", default=1234,
71                      help="Used for seeding the random number generator")
72
73    parser.add_option("--ruby_stats", type="string", default="ruby.stats")
74
75    protocol = buildEnv['PROTOCOL']
76    exec "import %s" % protocol
77    eval("%s.define_options(parser)" % protocol)
78
79def create_system(options, system, piobus = None, dma_devices = []):
80
81    system.ruby = RubySystem(clock = options.clock,
82                             stats_filename = options.ruby_stats,
83                             no_mem_vec = options.use_map)
84    ruby = system.ruby
85
86    protocol = buildEnv['PROTOCOL']
87    exec "import %s" % protocol
88    try:
89        (cpu_sequencers, dir_cntrls, all_cntrls) = \
90             eval("%s.create_system(options, system, piobus, \
91                                    dma_devices, ruby)" \
92                  % protocol)
93    except:
94        print "Error: could not create sytem for ruby protocol %s" % protocol
95        raise
96
97    # Create a port proxy for connecting the system port. This is
98    # independent of the protocol and kept in the protocol-agnostic
99    # part (i.e. here).
100    sys_port_proxy = RubyPortProxy(version = 0,
101                                   physMemPort = system.physmem.port,
102                                   physmem = system.physmem,
103                                   ruby_system = ruby)
104    # Give the system port proxy a SimObject parent without creating a
105    # full-fledged controller
106    system.sys_port_proxy = sys_port_proxy
107
108    # Connect the system port for loading of binaries etc
109    system.system_port = system.sys_port_proxy.slave
110
111
112    #
113    # Set the network classes based on the command line options
114    #
115    if options.garnet_network == "fixed":
116        class NetworkClass(GarnetNetwork_d): pass
117        class IntLinkClass(GarnetIntLink_d): pass
118        class ExtLinkClass(GarnetExtLink_d): pass
119        class RouterClass(GarnetRouter_d): pass
120    elif options.garnet_network == "flexible":
121        class NetworkClass(GarnetNetwork): pass
122        class IntLinkClass(GarnetIntLink): pass
123        class ExtLinkClass(GarnetExtLink): pass
124        class RouterClass(GarnetRouter): pass
125    else:
126        class NetworkClass(SimpleNetwork): pass
127        class IntLinkClass(SimpleIntLink): pass
128        class ExtLinkClass(SimpleExtLink): pass
129        class RouterClass(BasicRouter): pass
130
131    #
132    # Important: the topology must be created before the network and after the
133    # controllers.
134    #
135    exec "import %s" % options.topology
136    try:
137        net_topology = eval("%s.makeTopology(all_cntrls, options, \
138                                             IntLinkClass, ExtLinkClass, \
139                                             RouterClass)" \
140                            % options.topology)
141    except:
142        print "Error: could not create topology %s" % options.topology
143        raise
144
145    if options.network_fault_model:
146        assert(options.garnet_network == "fixed")
147        fault_model = FaultModel()
148        network = NetworkClass(ruby_system = ruby, topology = net_topology,\
149                               enable_fault_model=True, fault_model = fault_model)
150    else:
151        network = NetworkClass(ruby_system = ruby, topology = net_topology)
152
153    #
154    # Loop through the directory controlers.
155    # Determine the total memory size of the ruby system and verify it is equal
156    # to physmem.  However, if Ruby memory is using sparse memory in SE
157    # mode, then the system should not back-up the memory state with
158    # the Memory Vector and thus the memory size bytes should stay at 0.
159    # Also set the numa bits to the appropriate values.
160    #
161    total_mem_size = MemorySize('0B')
162
163    dir_bits = int(math.log(options.num_dirs, 2))
164
165    if options.numa_high_bit:
166        numa_bit = options.numa_high_bit
167    else:
168        # if not specified, use the lowest bits above the block offest
169        if dir_bits > 0:
170            # add 5 because bits 0-5 are the block offset
171            numa_bit = dir_bits + 5
172        else:
173            numa_bit = 6
174
175    for dir_cntrl in dir_cntrls:
176        total_mem_size.value += dir_cntrl.directory.size.value
177        dir_cntrl.directory.numa_high_bit = numa_bit
178
179    physmem_size = long(system.physmem.range.second) - \
180                     long(system.physmem.range.first) + 1
181    assert(total_mem_size.value == physmem_size)
182
183    ruby_profiler = RubyProfiler(ruby_system = ruby,
184                                 num_of_sequencers = len(cpu_sequencers))
185    ruby.network = network
186    ruby.profiler = ruby_profiler
187    ruby.mem_size = total_mem_size
188    ruby._cpu_ruby_ports = cpu_sequencers
189    ruby.random_seed    = options.random_seed
190