GPU_VIPER.py revision 12598:b80b2d9a251b 
1#
2#  Copyright (c) 2011-2015 Advanced Micro Devices, Inc.
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5#  For use for simulation and test purposes only
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32#
33#  Author: Lisa Hsu
34#
35
36import math
37import m5
38from m5.objects import *
39from m5.defines import buildEnv
40from Ruby import create_topology
41from Ruby import send_evicts
42
43from topologies.Cluster import Cluster
44from topologies.Crossbar import Crossbar
45
46class CntrlBase:
47    _seqs = 0
48    @classmethod
49    def seqCount(cls):
50        # Use SeqCount not class since we need global count
51        CntrlBase._seqs += 1
52        return CntrlBase._seqs - 1
53
54    _cntrls = 0
55    @classmethod
56    def cntrlCount(cls):
57        # Use CntlCount not class since we need global count
58        CntrlBase._cntrls += 1
59        return CntrlBase._cntrls - 1
60
61    _version = 0
62    @classmethod
63    def versionCount(cls):
64        cls._version += 1 # Use count for this particular type
65        return cls._version - 1
66
67class L1Cache(RubyCache):
68    resourceStalls = False
69    dataArrayBanks = 2
70    tagArrayBanks = 2
71    dataAccessLatency = 1
72    tagAccessLatency = 1
73    def create(self, size, assoc, options):
74        self.size = MemorySize(size)
75        self.assoc = assoc
76        self.replacement_policy = PseudoLRUReplacementPolicy()
77
78class L2Cache(RubyCache):
79    resourceStalls = False
80    assoc = 16
81    dataArrayBanks = 16
82    tagArrayBanks = 16
83    def create(self, size, assoc, options):
84        self.size = MemorySize(size)
85        self.assoc = assoc
86        self.replacement_policy = PseudoLRUReplacementPolicy()
87
88class CPCntrl(CorePair_Controller, CntrlBase):
89
90    def create(self, options, ruby_system, system):
91        self.version = self.versionCount()
92
93        self.L1Icache = L1Cache()
94        self.L1Icache.create(options.l1i_size, options.l1i_assoc, options)
95        self.L1D0cache = L1Cache()
96        self.L1D0cache.create(options.l1d_size, options.l1d_assoc, options)
97        self.L1D1cache = L1Cache()
98        self.L1D1cache.create(options.l1d_size, options.l1d_assoc, options)
99        self.L2cache = L2Cache()
100        self.L2cache.create(options.l2_size, options.l2_assoc, options)
101
102        self.sequencer = RubySequencer()
103        self.sequencer.version = self.seqCount()
104        self.sequencer.icache = self.L1Icache
105        self.sequencer.dcache = self.L1D0cache
106        self.sequencer.ruby_system = ruby_system
107        self.sequencer.coreid = 0
108        self.sequencer.is_cpu_sequencer = True
109
110        self.sequencer1 = RubySequencer()
111        self.sequencer1.version = self.seqCount()
112        self.sequencer1.icache = self.L1Icache
113        self.sequencer1.dcache = self.L1D1cache
114        self.sequencer1.ruby_system = ruby_system
115        self.sequencer1.coreid = 1
116        self.sequencer1.is_cpu_sequencer = True
117
118        self.issue_latency = options.cpu_to_dir_latency
119        self.send_evictions = send_evicts(options)
120
121        self.ruby_system = ruby_system
122
123        if options.recycle_latency:
124            self.recycle_latency = options.recycle_latency
125
126class TCPCache(RubyCache):
127    size = "16kB"
128    assoc = 16
129    dataArrayBanks = 16 #number of data banks
130    tagArrayBanks = 16  #number of tag banks
131    dataAccessLatency = 4
132    tagAccessLatency = 1
133    def create(self, options):
134        self.size = MemorySize(options.tcp_size)
135        self.assoc = options.tcp_assoc
136        self.resourceStalls = options.no_tcc_resource_stalls
137        self.replacement_policy = PseudoLRUReplacementPolicy()
138
139class TCPCntrl(TCP_Controller, CntrlBase):
140
141    def create(self, options, ruby_system, system):
142        self.version = self.versionCount()
143
144        self.L1cache = TCPCache(tagAccessLatency = options.TCP_latency,
145                                dataAccessLatency = options.TCP_latency)
146        self.L1cache.resourceStalls = options.no_resource_stalls
147        self.L1cache.create(options)
148        self.issue_latency = 1
149
150        self.coalescer = VIPERCoalescer()
151        self.coalescer.version = self.seqCount()
152        self.coalescer.icache = self.L1cache
153        self.coalescer.dcache = self.L1cache
154        self.coalescer.ruby_system = ruby_system
155        self.coalescer.support_inst_reqs = False
156        self.coalescer.is_cpu_sequencer = False
157
158        self.sequencer = RubySequencer()
159        self.sequencer.version = self.seqCount()
160        self.sequencer.icache = self.L1cache
161        self.sequencer.dcache = self.L1cache
162        self.sequencer.ruby_system = ruby_system
163        self.sequencer.is_cpu_sequencer = True
164
165        self.use_seq_not_coal = False
166
167        self.ruby_system = ruby_system
168
169        if options.recycle_latency:
170            self.recycle_latency = options.recycle_latency
171
172    def createCP(self, options, ruby_system, system):
173        self.version = self.versionCount()
174
175        self.L1cache = TCPCache(tagAccessLatency = options.TCP_latency,
176                                dataAccessLatency = options.TCP_latency)
177        self.L1cache.resourceStalls = options.no_resource_stalls
178        self.L1cache.create(options)
179        self.issue_latency = 1
180
181        self.coalescer = VIPERCoalescer()
182        self.coalescer.version = self.seqCount()
183        self.coalescer.icache = self.L1cache
184        self.coalescer.dcache = self.L1cache
185        self.coalescer.ruby_system = ruby_system
186        self.coalescer.support_inst_reqs = False
187        self.coalescer.is_cpu_sequencer = False
188
189        self.sequencer = RubySequencer()
190        self.sequencer.version = self.seqCount()
191        self.sequencer.icache = self.L1cache
192        self.sequencer.dcache = self.L1cache
193        self.sequencer.ruby_system = ruby_system
194        self.sequencer.is_cpu_sequencer = True
195
196        self.use_seq_not_coal = True
197
198        self.ruby_system = ruby_system
199
200        if options.recycle_latency:
201            self.recycle_latency = options.recycle_latency
202
203class SQCCache(RubyCache):
204    dataArrayBanks = 8
205    tagArrayBanks = 8
206    dataAccessLatency = 1
207    tagAccessLatency = 1
208
209    def create(self, options):
210        self.size = MemorySize(options.sqc_size)
211        self.assoc = options.sqc_assoc
212        self.replacement_policy = PseudoLRUReplacementPolicy()
213
214class SQCCntrl(SQC_Controller, CntrlBase):
215
216    def create(self, options, ruby_system, system):
217        self.version = self.versionCount()
218
219        self.L1cache = SQCCache()
220        self.L1cache.create(options)
221        self.L1cache.resourceStalls = options.no_resource_stalls
222
223        self.sequencer = RubySequencer()
224
225        self.sequencer.version = self.seqCount()
226        self.sequencer.icache = self.L1cache
227        self.sequencer.dcache = self.L1cache
228        self.sequencer.ruby_system = ruby_system
229        self.sequencer.support_data_reqs = False
230        self.sequencer.is_cpu_sequencer = False
231
232        self.ruby_system = ruby_system
233
234        if options.recycle_latency:
235            self.recycle_latency = options.recycle_latency
236
237class TCC(RubyCache):
238    size = MemorySize("256kB")
239    assoc = 16
240    dataAccessLatency = 8
241    tagAccessLatency = 2
242    resourceStalls = True
243    def create(self, options):
244        self.assoc = options.tcc_assoc
245        if hasattr(options, 'bw_scalor') and options.bw_scalor > 0:
246          s = options.num_compute_units
247          tcc_size = s * 128
248          tcc_size = str(tcc_size)+'kB'
249          self.size = MemorySize(tcc_size)
250          self.dataArrayBanks = 64
251          self.tagArrayBanks = 64
252        else:
253          self.size = MemorySize(options.tcc_size)
254          self.dataArrayBanks = 256 / options.num_tccs #number of data banks
255          self.tagArrayBanks = 256 / options.num_tccs #number of tag banks
256        self.size.value = self.size.value / options.num_tccs
257        if ((self.size.value / long(self.assoc)) < 128):
258            self.size.value = long(128 * self.assoc)
259        self.start_index_bit = math.log(options.cacheline_size, 2) + \
260                               math.log(options.num_tccs, 2)
261        self.replacement_policy = PseudoLRUReplacementPolicy()
262
263
264class TCCCntrl(TCC_Controller, CntrlBase):
265    def create(self, options, ruby_system, system):
266        self.version = self.versionCount()
267        self.L2cache = TCC()
268        self.L2cache.create(options)
269        self.L2cache.resourceStalls = options.no_tcc_resource_stalls
270
271        self.ruby_system = ruby_system
272
273        if options.recycle_latency:
274            self.recycle_latency = options.recycle_latency
275
276class L3Cache(RubyCache):
277    dataArrayBanks = 16
278    tagArrayBanks = 16
279
280    def create(self, options, ruby_system, system):
281        self.size = MemorySize(options.l3_size)
282        self.size.value /= options.num_dirs
283        self.assoc = options.l3_assoc
284        self.dataArrayBanks /= options.num_dirs
285        self.tagArrayBanks /= options.num_dirs
286        self.dataArrayBanks /= options.num_dirs
287        self.tagArrayBanks /= options.num_dirs
288        self.dataAccessLatency = options.l3_data_latency
289        self.tagAccessLatency = options.l3_tag_latency
290        self.resourceStalls = False
291        self.replacement_policy = PseudoLRUReplacementPolicy()
292
293class L3Cntrl(L3Cache_Controller, CntrlBase):
294    def create(self, options, ruby_system, system):
295        self.version = self.versionCount()
296        self.L3cache = L3Cache()
297        self.L3cache.create(options, ruby_system, system)
298
299        self.l3_response_latency = max(self.L3cache.dataAccessLatency, self.L3cache.tagAccessLatency)
300        self.ruby_system = ruby_system
301
302        if options.recycle_latency:
303            self.recycle_latency = options.recycle_latency
304
305    def connectWireBuffers(self, req_to_dir, resp_to_dir, l3_unblock_to_dir,
306                           req_to_l3, probe_to_l3, resp_to_l3):
307        self.reqToDir = req_to_dir
308        self.respToDir = resp_to_dir
309        self.l3UnblockToDir = l3_unblock_to_dir
310        self.reqToL3 = req_to_l3
311        self.probeToL3 = probe_to_l3
312        self.respToL3 = resp_to_l3
313
314class DirMem(RubyDirectoryMemory, CntrlBase):
315    def create(self, options, ruby_system, system):
316        self.version = self.versionCount()
317
318        phys_mem_size = AddrRange(options.mem_size).size()
319        mem_module_size = phys_mem_size / options.num_dirs
320        dir_size = MemorySize('0B')
321        dir_size.value = mem_module_size
322        self.size = dir_size
323
324class DirCntrl(Directory_Controller, CntrlBase):
325    def create(self, options, ruby_system, system):
326        self.version = self.versionCount()
327
328        self.response_latency = 30
329
330        self.directory = DirMem()
331        self.directory.create(options, ruby_system, system)
332
333        self.L3CacheMemory = L3Cache()
334        self.L3CacheMemory.create(options, ruby_system, system)
335
336        self.l3_hit_latency = max(self.L3CacheMemory.dataAccessLatency,
337                                  self.L3CacheMemory.tagAccessLatency)
338
339        self.number_of_TBEs = options.num_tbes
340
341        self.ruby_system = ruby_system
342
343        if options.recycle_latency:
344            self.recycle_latency = options.recycle_latency
345
346    def connectWireBuffers(self, req_to_dir, resp_to_dir, l3_unblock_to_dir,
347                           req_to_l3, probe_to_l3, resp_to_l3):
348        self.reqToDir = req_to_dir
349        self.respToDir = resp_to_dir
350        self.l3UnblockToDir = l3_unblock_to_dir
351        self.reqToL3 = req_to_l3
352        self.probeToL3 = probe_to_l3
353        self.respToL3 = resp_to_l3
354
355def define_options(parser):
356    parser.add_option("--num-subcaches", type = "int", default = 4)
357    parser.add_option("--l3-data-latency", type = "int", default = 20)
358    parser.add_option("--l3-tag-latency", type = "int", default = 15)
359    parser.add_option("--cpu-to-dir-latency", type = "int", default = 120)
360    parser.add_option("--gpu-to-dir-latency", type = "int", default = 120)
361    parser.add_option("--no-resource-stalls", action = "store_false",
362                      default = True)
363    parser.add_option("--no-tcc-resource-stalls", action = "store_false",
364                      default = True)
365    parser.add_option("--use-L3-on-WT", action = "store_true", default = False)
366    parser.add_option("--num-tbes", type = "int", default = 256)
367    parser.add_option("--l2-latency", type = "int", default = 50)  # load to use
368    parser.add_option("--num-tccs", type = "int", default = 1,
369                      help = "number of TCC banks in the GPU")
370    parser.add_option("--sqc-size", type = 'string', default = '32kB',
371                      help = "SQC cache size")
372    parser.add_option("--sqc-assoc", type = 'int', default = 8,
373                      help = "SQC cache assoc")
374    parser.add_option("--WB_L1", action = "store_true", default = False,
375                      help = "writeback L1")
376    parser.add_option("--WB_L2", action = "store_true", default = False,
377                      help = "writeback L2")
378    parser.add_option("--TCP_latency", type = "int", default = 4,
379                      help = "TCP latency")
380    parser.add_option("--TCC_latency", type = "int", default = 16,
381                      help = "TCC latency")
382    parser.add_option("--tcc-size", type = 'string', default = '256kB',
383                      help = "agregate tcc size")
384    parser.add_option("--tcc-assoc", type = 'int', default = 16,
385                      help = "tcc assoc")
386    parser.add_option("--tcp-size", type = 'string', default = '16kB',
387                      help = "tcp size")
388    parser.add_option("--tcp-assoc", type = 'int', default = 16,
389                      help = "tcp assoc")
390    parser.add_option("--noL1", action = "store_true", default = False,
391                      help = "bypassL1")
392
393def create_system(options, full_system, system, dma_devices, bootmem,
394                  ruby_system):
395    if buildEnv['PROTOCOL'] != 'GPU_VIPER':
396        panic("This script requires the GPU_VIPER protocol to be built.")
397
398    cpu_sequencers = []
399
400    #
401    # The ruby network creation expects the list of nodes in the system to be
402    # consistent with the NetDest list.  Therefore the l1 controller nodes
403    # must be listed before the directory nodes and directory nodes before
404    # dma nodes, etc.
405    #
406    cp_cntrl_nodes = []
407    tcp_cntrl_nodes = []
408    sqc_cntrl_nodes = []
409    tcc_cntrl_nodes = []
410    dir_cntrl_nodes = []
411    l3_cntrl_nodes = []
412
413    #
414    # Must create the individual controllers before the network to ensure the
415    # controller constructors are called before the network constructor
416    #
417
418    # For an odd number of CPUs, still create the right number of controllers
419    TCC_bits = int(math.log(options.num_tccs, 2))
420
421    # This is the base crossbar that connects the L3s, Dirs, and cpu/gpu
422    # Clusters
423    crossbar_bw = None
424    mainCluster = None
425    if hasattr(options, 'bw_scalor') and options.bw_scalor > 0:
426        #Assuming a 2GHz clock
427        crossbar_bw = 16 * options.num_compute_units * options.bw_scalor
428        mainCluster = Cluster(intBW=crossbar_bw)
429    else:
430        mainCluster = Cluster(intBW=8) # 16 GB/s
431    for i in xrange(options.num_dirs):
432
433        dir_cntrl = DirCntrl(noTCCdir = True, TCC_select_num_bits = TCC_bits)
434        dir_cntrl.create(options, ruby_system, system)
435        dir_cntrl.number_of_TBEs = options.num_tbes
436        dir_cntrl.useL3OnWT = options.use_L3_on_WT
437        # the number_of_TBEs is inclusive of TBEs below
438
439        # Connect the Directory controller to the ruby network
440        dir_cntrl.requestFromCores = MessageBuffer(ordered = True)
441        dir_cntrl.requestFromCores.slave = ruby_system.network.master
442
443        dir_cntrl.responseFromCores = MessageBuffer()
444        dir_cntrl.responseFromCores.slave = ruby_system.network.master
445
446        dir_cntrl.unblockFromCores = MessageBuffer()
447        dir_cntrl.unblockFromCores.slave = ruby_system.network.master
448
449        dir_cntrl.probeToCore = MessageBuffer()
450        dir_cntrl.probeToCore.master = ruby_system.network.slave
451
452        dir_cntrl.responseToCore = MessageBuffer()
453        dir_cntrl.responseToCore.master = ruby_system.network.slave
454
455        dir_cntrl.triggerQueue = MessageBuffer(ordered = True)
456        dir_cntrl.L3triggerQueue = MessageBuffer(ordered = True)
457        dir_cntrl.responseFromMemory = MessageBuffer()
458
459        exec("ruby_system.dir_cntrl%d = dir_cntrl" % i)
460        dir_cntrl_nodes.append(dir_cntrl)
461
462        mainCluster.add(dir_cntrl)
463
464    cpuCluster = None
465    if hasattr(options, 'bw_scalor') and options.bw_scalor > 0:
466        cpuCluster = Cluster(extBW = crossbar_bw, intBW = crossbar_bw)
467    else:
468        cpuCluster = Cluster(extBW = 8, intBW = 8) # 16 GB/s
469    for i in xrange((options.num_cpus + 1) / 2):
470
471        cp_cntrl = CPCntrl()
472        cp_cntrl.create(options, ruby_system, system)
473
474        exec("ruby_system.cp_cntrl%d = cp_cntrl" % i)
475        #
476        # Add controllers and sequencers to the appropriate lists
477        #
478        cpu_sequencers.extend([cp_cntrl.sequencer, cp_cntrl.sequencer1])
479
480        # Connect the CP controllers and the network
481        cp_cntrl.requestFromCore = MessageBuffer()
482        cp_cntrl.requestFromCore.master = ruby_system.network.slave
483
484        cp_cntrl.responseFromCore = MessageBuffer()
485        cp_cntrl.responseFromCore.master = ruby_system.network.slave
486
487        cp_cntrl.unblockFromCore = MessageBuffer()
488        cp_cntrl.unblockFromCore.master = ruby_system.network.slave
489
490        cp_cntrl.probeToCore = MessageBuffer()
491        cp_cntrl.probeToCore.slave = ruby_system.network.master
492
493        cp_cntrl.responseToCore = MessageBuffer()
494        cp_cntrl.responseToCore.slave = ruby_system.network.master
495
496        cp_cntrl.mandatoryQueue = MessageBuffer()
497        cp_cntrl.triggerQueue = MessageBuffer(ordered = True)
498
499        cpuCluster.add(cp_cntrl)
500
501    gpuCluster = None
502    if hasattr(options, 'bw_scalor') and options.bw_scalor > 0:
503      gpuCluster = Cluster(extBW = crossbar_bw, intBW = crossbar_bw)
504    else:
505      gpuCluster = Cluster(extBW = 8, intBW = 8) # 16 GB/s
506    for i in xrange(options.num_compute_units):
507
508        tcp_cntrl = TCPCntrl(TCC_select_num_bits = TCC_bits,
509                             issue_latency = 1,
510                             number_of_TBEs = 2560)
511        # TBEs set to max outstanding requests
512        tcp_cntrl.create(options, ruby_system, system)
513        tcp_cntrl.WB = options.WB_L1
514        tcp_cntrl.disableL1 = options.noL1
515        tcp_cntrl.L1cache.tagAccessLatency = options.TCP_latency
516        tcp_cntrl.L1cache.dataAccessLatency = options.TCP_latency
517
518        exec("ruby_system.tcp_cntrl%d = tcp_cntrl" % i)
519        #
520        # Add controllers and sequencers to the appropriate lists
521        #
522        cpu_sequencers.append(tcp_cntrl.coalescer)
523        tcp_cntrl_nodes.append(tcp_cntrl)
524
525        # Connect the TCP controller to the ruby network
526        tcp_cntrl.requestFromTCP = MessageBuffer(ordered = True)
527        tcp_cntrl.requestFromTCP.master = ruby_system.network.slave
528
529        tcp_cntrl.responseFromTCP = MessageBuffer(ordered = True)
530        tcp_cntrl.responseFromTCP.master = ruby_system.network.slave
531
532        tcp_cntrl.unblockFromCore = MessageBuffer()
533        tcp_cntrl.unblockFromCore.master = ruby_system.network.slave
534
535        tcp_cntrl.probeToTCP = MessageBuffer(ordered = True)
536        tcp_cntrl.probeToTCP.slave = ruby_system.network.master
537
538        tcp_cntrl.responseToTCP = MessageBuffer(ordered = True)
539        tcp_cntrl.responseToTCP.slave = ruby_system.network.master
540
541        tcp_cntrl.mandatoryQueue = MessageBuffer()
542
543        gpuCluster.add(tcp_cntrl)
544
545    for i in xrange(options.num_sqc):
546
547        sqc_cntrl = SQCCntrl(TCC_select_num_bits = TCC_bits)
548        sqc_cntrl.create(options, ruby_system, system)
549
550        exec("ruby_system.sqc_cntrl%d = sqc_cntrl" % i)
551        #
552        # Add controllers and sequencers to the appropriate lists
553        #
554        cpu_sequencers.append(sqc_cntrl.sequencer)
555
556        # Connect the SQC controller to the ruby network
557        sqc_cntrl.requestFromSQC = MessageBuffer(ordered = True)
558        sqc_cntrl.requestFromSQC.master = ruby_system.network.slave
559
560        sqc_cntrl.probeToSQC = MessageBuffer(ordered = True)
561        sqc_cntrl.probeToSQC.slave = ruby_system.network.master
562
563        sqc_cntrl.responseToSQC = MessageBuffer(ordered = True)
564        sqc_cntrl.responseToSQC.slave = ruby_system.network.master
565
566        sqc_cntrl.mandatoryQueue = MessageBuffer()
567
568        # SQC also in GPU cluster
569        gpuCluster.add(sqc_cntrl)
570
571    for i in xrange(options.num_cp):
572
573        tcp_ID = options.num_compute_units + i
574        sqc_ID = options.num_sqc + i
575
576        tcp_cntrl = TCPCntrl(TCC_select_num_bits = TCC_bits,
577                             issue_latency = 1,
578                             number_of_TBEs = 2560)
579        # TBEs set to max outstanding requests
580        tcp_cntrl.createCP(options, ruby_system, system)
581        tcp_cntrl.WB = options.WB_L1
582        tcp_cntrl.disableL1 = options.noL1
583        tcp_cntrl.L1cache.tagAccessLatency = options.TCP_latency
584        tcp_cntrl.L1cache.dataAccessLatency = options.TCP_latency
585
586        exec("ruby_system.tcp_cntrl%d = tcp_cntrl" % tcp_ID)
587        #
588        # Add controllers and sequencers to the appropriate lists
589        #
590        cpu_sequencers.append(tcp_cntrl.sequencer)
591        tcp_cntrl_nodes.append(tcp_cntrl)
592
593        # Connect the CP (TCP) controllers to the ruby network
594        tcp_cntrl.requestFromTCP = MessageBuffer(ordered = True)
595        tcp_cntrl.requestFromTCP.master = ruby_system.network.slave
596
597        tcp_cntrl.responseFromTCP = MessageBuffer(ordered = True)
598        tcp_cntrl.responseFromTCP.master = ruby_system.network.slave
599
600        tcp_cntrl.unblockFromCore = MessageBuffer(ordered = True)
601        tcp_cntrl.unblockFromCore.master = ruby_system.network.slave
602
603        tcp_cntrl.probeToTCP = MessageBuffer(ordered = True)
604        tcp_cntrl.probeToTCP.slave = ruby_system.network.master
605
606        tcp_cntrl.responseToTCP = MessageBuffer(ordered = True)
607        tcp_cntrl.responseToTCP.slave = ruby_system.network.master
608
609        tcp_cntrl.mandatoryQueue = MessageBuffer()
610
611        gpuCluster.add(tcp_cntrl)
612
613        sqc_cntrl = SQCCntrl(TCC_select_num_bits = TCC_bits)
614        sqc_cntrl.create(options, ruby_system, system)
615
616        exec("ruby_system.sqc_cntrl%d = sqc_cntrl" % sqc_ID)
617        #
618        # Add controllers and sequencers to the appropriate lists
619        #
620        cpu_sequencers.append(sqc_cntrl.sequencer)
621
622        # SQC also in GPU cluster
623        gpuCluster.add(sqc_cntrl)
624
625    for i in xrange(options.num_tccs):
626
627        tcc_cntrl = TCCCntrl(l2_response_latency = options.TCC_latency)
628        tcc_cntrl.create(options, ruby_system, system)
629        tcc_cntrl.l2_request_latency = options.gpu_to_dir_latency
630        tcc_cntrl.l2_response_latency = options.TCC_latency
631        tcc_cntrl_nodes.append(tcc_cntrl)
632        tcc_cntrl.WB = options.WB_L2
633        tcc_cntrl.number_of_TBEs = 2560 * options.num_compute_units
634        # the number_of_TBEs is inclusive of TBEs below
635
636        # Connect the TCC controllers to the ruby network
637        tcc_cntrl.requestFromTCP = MessageBuffer(ordered = True)
638        tcc_cntrl.requestFromTCP.slave = ruby_system.network.master
639
640        tcc_cntrl.responseToCore = MessageBuffer(ordered = True)
641        tcc_cntrl.responseToCore.master = ruby_system.network.slave
642
643        tcc_cntrl.probeFromNB = MessageBuffer()
644        tcc_cntrl.probeFromNB.slave = ruby_system.network.master
645
646        tcc_cntrl.responseFromNB = MessageBuffer()
647        tcc_cntrl.responseFromNB.slave = ruby_system.network.master
648
649        tcc_cntrl.requestToNB = MessageBuffer(ordered = True)
650        tcc_cntrl.requestToNB.master = ruby_system.network.slave
651
652        tcc_cntrl.responseToNB = MessageBuffer()
653        tcc_cntrl.responseToNB.master = ruby_system.network.slave
654
655        tcc_cntrl.unblockToNB = MessageBuffer()
656        tcc_cntrl.unblockToNB.master = ruby_system.network.slave
657
658        tcc_cntrl.triggerQueue = MessageBuffer(ordered = True)
659
660        exec("ruby_system.tcc_cntrl%d = tcc_cntrl" % i)
661
662        # connect all of the wire buffers between L3 and dirs up
663        # TCC cntrls added to the GPU cluster
664        gpuCluster.add(tcc_cntrl)
665
666    # Assuming no DMA devices
667    assert(len(dma_devices) == 0)
668
669    # Add cpu/gpu clusters to main cluster
670    mainCluster.add(cpuCluster)
671    mainCluster.add(gpuCluster)
672
673    ruby_system.network.number_of_virtual_networks = 10
674
675    return (cpu_sequencers, dir_cntrl_nodes, mainCluster)
676