Ruby.py revision 8929 
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_ports = []):
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, dma_ports, ruby)"
91                  % protocol)
92    except:
93        print "Error: could not create sytem for ruby protocol %s" % protocol
94        raise
95
96    # Create a port proxy for connecting the system port. This is
97    # independent of the protocol and kept in the protocol-agnostic
98    # part (i.e. here).
99    sys_port_proxy = RubyPortProxy(ruby_system = ruby)
100    # Give the system port proxy a SimObject parent without creating a
101    # full-fledged controller
102    system.sys_port_proxy = sys_port_proxy
103
104    # Connect the system port for loading of binaries etc
105    system.system_port = system.sys_port_proxy.slave
106
107
108    #
109    # Set the network classes based on the command line options
110    #
111    if options.garnet_network == "fixed":
112        class NetworkClass(GarnetNetwork_d): pass
113        class IntLinkClass(GarnetIntLink_d): pass
114        class ExtLinkClass(GarnetExtLink_d): pass
115        class RouterClass(GarnetRouter_d): pass
116    elif options.garnet_network == "flexible":
117        class NetworkClass(GarnetNetwork): pass
118        class IntLinkClass(GarnetIntLink): pass
119        class ExtLinkClass(GarnetExtLink): pass
120        class RouterClass(GarnetRouter): pass
121    else:
122        class NetworkClass(SimpleNetwork): pass
123        class IntLinkClass(SimpleIntLink): pass
124        class ExtLinkClass(SimpleExtLink): pass
125        class RouterClass(BasicRouter): pass
126
127    #
128    # Important: the topology must be created before the network and after the
129    # controllers.
130    #
131    exec "import %s" % options.topology
132    try:
133        net_topology = eval("%s.makeTopology(all_cntrls, options, \
134                                             IntLinkClass, ExtLinkClass, \
135                                             RouterClass)" \
136                            % options.topology)
137    except:
138        print "Error: could not create topology %s" % options.topology
139        raise
140
141    if options.network_fault_model:
142        assert(options.garnet_network == "fixed")
143        fault_model = FaultModel()
144        network = NetworkClass(ruby_system = ruby, topology = net_topology,\
145                               enable_fault_model=True, fault_model = fault_model)
146    else:
147        network = NetworkClass(ruby_system = ruby, topology = net_topology)
148
149    #
150    # Loop through the directory controlers.
151    # Determine the total memory size of the ruby system and verify it is equal
152    # to physmem.  However, if Ruby memory is using sparse memory in SE
153    # mode, then the system should not back-up the memory state with
154    # the Memory Vector and thus the memory size bytes should stay at 0.
155    # Also set the numa bits to the appropriate values.
156    #
157    total_mem_size = MemorySize('0B')
158
159    dir_bits = int(math.log(options.num_dirs, 2))
160
161    if options.numa_high_bit:
162        numa_bit = options.numa_high_bit
163    else:
164        # if not specified, use the lowest bits above the block offest
165        if dir_bits > 0:
166            # add 5 because bits 0-5 are the block offset
167            numa_bit = dir_bits + 5
168        else:
169            numa_bit = 6
170
171    for dir_cntrl in dir_cntrls:
172        total_mem_size.value += dir_cntrl.directory.size.value
173        dir_cntrl.directory.numa_high_bit = numa_bit
174
175    physmem_size = long(system.physmem.range.second) - \
176                     long(system.physmem.range.first) + 1
177    assert(total_mem_size.value == physmem_size)
178
179    ruby_profiler = RubyProfiler(ruby_system = ruby,
180                                 num_of_sequencers = len(cpu_sequencers))
181    ruby.network = network
182    ruby.profiler = ruby_profiler
183    ruby.mem_size = total_mem_size
184    ruby._cpu_ruby_ports = cpu_sequencers
185    ruby.random_seed    = options.random_seed
186