GPU_VIPER_Baseline.py revision 11308:7d8836fd043d 
1#
2#  Copyright (c) 2015 Advanced Micro Devices, Inc.
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4#
5#  For use for simulation and test purposes only
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32#
33#  Author: Sooraj Puthoor
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 Cluster import Cluster
44from 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
130    tagArrayBanks = 16
131    dataAccessLatency = 4
132    tagAccessLatency = 1
133    def create(self, options):
134        self.size = MemorySize(options.tcp_size)
135        self.dataArrayBanks = 16
136        self.tagArrayBanks = 16
137        self.dataAccessLatency = 4
138        self.tagAccessLatency = 1
139        self.resourceStalls = options.no_tcc_resource_stalls
140        self.replacement_policy = PseudoLRUReplacementPolicy()
141
142class TCPCntrl(TCP_Controller, CntrlBase):
143
144    def create(self, options, ruby_system, system):
145        self.version = self.versionCount()
146        self.L1cache = TCPCache()
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        if options.recycle_latency:
169            self.recycle_latency = options.recycle_latency
170
171class SQCCache(RubyCache):
172    dataArrayBanks = 8
173    tagArrayBanks = 8
174    dataAccessLatency = 1
175    tagAccessLatency = 1
176
177    def create(self, options):
178        self.size = MemorySize(options.sqc_size)
179        self.assoc = options.sqc_assoc
180        self.replacement_policy = PseudoLRUReplacementPolicy()
181
182class SQCCntrl(SQC_Controller, CntrlBase):
183
184    def create(self, options, ruby_system, system):
185        self.version = self.versionCount()
186        self.L1cache = SQCCache()
187        self.L1cache.create(options)
188        self.L1cache.resourceStalls = False
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.support_data_reqs = False
195        self.sequencer.is_cpu_sequencer = False
196        self.ruby_system = ruby_system
197        if options.recycle_latency:
198            self.recycle_latency = options.recycle_latency
199
200class TCC(RubyCache):
201    size = MemorySize("256kB")
202    assoc = 16
203    dataAccessLatency = 8
204    tagAccessLatency = 2
205    resourceStalls = True
206    def create(self, options):
207        self.assoc = options.tcc_assoc
208        if hasattr(options, 'bw_scalor') and options.bw_scalor > 0:
209          s = options.num_compute_units
210          tcc_size = s * 128
211          tcc_size = str(tcc_size)+'kB'
212          self.size = MemorySize(tcc_size)
213          self.dataArrayBanks = 64
214          self.tagArrayBanks = 64
215        else:
216          self.size = MemorySize(options.tcc_size)
217          self.dataArrayBanks = 256 / options.num_tccs #number of data banks
218          self.tagArrayBanks = 256 / options.num_tccs #number of tag banks
219        self.size.value = self.size.value / options.num_tccs
220        if ((self.size.value / long(self.assoc)) < 128):
221            self.size.value = long(128 * self.assoc)
222        self.start_index_bit = math.log(options.cacheline_size, 2) + \
223                               math.log(options.num_tccs, 2)
224        self.replacement_policy = PseudoLRUReplacementPolicy()
225
226class TCCCntrl(TCC_Controller, CntrlBase):
227    def create(self, options, ruby_system, system):
228        self.version = self.versionCount()
229        self.L2cache = TCC()
230        self.L2cache.create(options)
231        self.ruby_system = ruby_system
232        self.L2cache.resourceStalls = options.no_tcc_resource_stalls
233
234        if options.recycle_latency:
235            self.recycle_latency = options.recycle_latency
236
237class L3Cache(RubyCache):
238    dataArrayBanks = 16
239    tagArrayBanks = 16
240
241    def create(self, options, ruby_system, system):
242        self.size = MemorySize(options.l3_size)
243        self.size.value /= options.num_dirs
244        self.assoc = options.l3_assoc
245        self.dataArrayBanks /= options.num_dirs
246        self.tagArrayBanks /= options.num_dirs
247        self.dataArrayBanks /= options.num_dirs
248        self.tagArrayBanks /= options.num_dirs
249        self.dataAccessLatency = options.l3_data_latency
250        self.tagAccessLatency = options.l3_tag_latency
251        self.resourceStalls = False
252        self.replacement_policy = PseudoLRUReplacementPolicy()
253
254class ProbeFilter(RubyCache):
255    size = "4MB"
256    assoc = 16
257    dataArrayBanks = 256
258    tagArrayBanks = 256
259
260    def create(self, options, ruby_system, system):
261        self.block_size = "%dB" % (64 * options.blocks_per_region)
262        self.size = options.region_dir_entries * \
263            self.block_size * options.num_compute_units
264        self.assoc = 8
265        self.tagArrayBanks = 8
266        self.tagAccessLatency = options.dir_tag_latency
267        self.dataAccessLatency = 1
268        self.resourceStalls = options.no_resource_stalls
269        self.start_index_bit = 6 + int(math.log(options.blocks_per_region, 2))
270        self.replacement_policy = PseudoLRUReplacementPolicy()
271
272class L3Cntrl(L3Cache_Controller, CntrlBase):
273    def create(self, options, ruby_system, system):
274        self.version = self.versionCount()
275        self.L3cache = L3Cache()
276        self.L3cache.create(options, ruby_system, system)
277        self.l3_response_latency = \
278            max(self.L3cache.dataAccessLatency, self.L3cache.tagAccessLatency)
279        self.ruby_system = ruby_system
280        if options.recycle_latency:
281            self.recycle_latency = options.recycle_latency
282
283    def connectWireBuffers(self, req_to_dir, resp_to_dir, l3_unblock_to_dir,
284                           req_to_l3, probe_to_l3, resp_to_l3):
285        self.reqToDir = req_to_dir
286        self.respToDir = resp_to_dir
287        self.l3UnblockToDir = l3_unblock_to_dir
288        self.reqToL3 = req_to_l3
289        self.probeToL3 = probe_to_l3
290        self.respToL3 = resp_to_l3
291
292class DirMem(RubyDirectoryMemory, CntrlBase):
293    def create(self, options, ruby_system, system):
294        self.version = self.versionCount()
295
296        phys_mem_size = AddrRange(options.mem_size).size()
297        mem_module_size = phys_mem_size / options.num_dirs
298        dir_size = MemorySize('0B')
299        dir_size.value = mem_module_size
300        self.size = dir_size
301
302class DirCntrl(Directory_Controller, CntrlBase):
303    def create(self, options, ruby_system, system):
304        self.version = self.versionCount()
305        self.response_latency = 30
306        self.directory = DirMem()
307        self.directory.create(options, ruby_system, system)
308        self.L3CacheMemory = L3Cache()
309        self.L3CacheMemory.create(options, ruby_system, system)
310        self.ProbeFilterMemory = ProbeFilter()
311        self.ProbeFilterMemory.create(options, ruby_system, system)
312        self.l3_hit_latency = \
313            max(self.L3CacheMemory.dataAccessLatency,
314            self.L3CacheMemory.tagAccessLatency)
315
316        self.ruby_system = ruby_system
317        if options.recycle_latency:
318            self.recycle_latency = options.recycle_latency
319
320    def connectWireBuffers(self, req_to_dir, resp_to_dir, l3_unblock_to_dir,
321                           req_to_l3, probe_to_l3, resp_to_l3):
322        self.reqToDir = req_to_dir
323        self.respToDir = resp_to_dir
324        self.l3UnblockToDir = l3_unblock_to_dir
325        self.reqToL3 = req_to_l3
326        self.probeToL3 = probe_to_l3
327        self.respToL3 = resp_to_l3
328
329def define_options(parser):
330    parser.add_option("--num-subcaches", type = "int", default = 4)
331    parser.add_option("--l3-data-latency", type = "int", default = 20)
332    parser.add_option("--l3-tag-latency", type = "int", default = 15)
333    parser.add_option("--cpu-to-dir-latency", type = "int", default = 120)
334    parser.add_option("--gpu-to-dir-latency", type = "int", default = 120)
335    parser.add_option("--no-resource-stalls", action = "store_false",
336                      default = True)
337    parser.add_option("--no-tcc-resource-stalls", action = "store_false",
338                      default = True)
339    parser.add_option("--num-tbes", type = "int", default = 2560)
340    parser.add_option("--l2-latency", type = "int", default = 50)  # load to use
341    parser.add_option("--num-tccs", type = "int", default = 1,
342                      help = "number of TCC banks in the GPU")
343    parser.add_option("--sqc-size", type = 'string', default = '32kB',
344                      help = "SQC cache size")
345    parser.add_option("--sqc-assoc", type = 'int', default = 8,
346                      help = "SQC cache assoc")
347    parser.add_option("--region-dir-entries", type = "int", default = 8192)
348    parser.add_option("--dir-tag-latency", type = "int", default = 8)
349    parser.add_option("--dir-tag-banks", type = "int", default = 4)
350    parser.add_option("--blocks-per-region", type = "int", default = 1)
351    parser.add_option("--use-L3-on-WT", action = "store_true", default = False)
352    parser.add_option("--nonInclusiveDir", action = "store_true",
353                      default = False)
354    parser.add_option("--WB_L1", action = "store_true",
355        default = False, help = "writeback L2")
356    parser.add_option("--WB_L2", action = "store_true",
357        default = False, help = "writeback L2")
358    parser.add_option("--TCP_latency", type = "int",
359        default = 4, help = "TCP latency")
360    parser.add_option("--TCC_latency", type = "int",
361        default = 16, help = "TCC latency")
362    parser.add_option("--tcc-size", type = 'string', default = '2MB',
363                      help = "agregate tcc size")
364    parser.add_option("--tcc-assoc", type = 'int', default = 16,
365                      help = "tcc assoc")
366    parser.add_option("--tcp-size", type = 'string', default = '16kB',
367                      help = "tcp size")
368    parser.add_option("--sampler-sets", type = "int", default = 1024)
369    parser.add_option("--sampler-assoc", type = "int", default = 16)
370    parser.add_option("--sampler-counter", type = "int", default = 512)
371    parser.add_option("--noL1", action = "store_true", default = False,
372                      help = "bypassL1")
373    parser.add_option("--noL2", action = "store_true", default = False,
374                      help = "bypassL2")
375
376def create_system(options, full_system, system, dma_devices, ruby_system):
377    if buildEnv['PROTOCOL'] != 'GPU_VIPER_Baseline':
378        panic("This script requires the" \
379        "GPU_VIPER_Baseline protocol to be built.")
380
381    cpu_sequencers = []
382
383    #
384    # The ruby network creation expects the list of nodes in the system to be
385    # consistent with the NetDest list.  Therefore the l1 controller nodes
386    # must be listed before the directory nodes and directory nodes before
387    # dma nodes, etc.
388    #
389    cp_cntrl_nodes = []
390    tcp_cntrl_nodes = []
391    sqc_cntrl_nodes = []
392    tcc_cntrl_nodes = []
393    dir_cntrl_nodes = []
394    l3_cntrl_nodes = []
395
396    #
397    # Must create the individual controllers before the network to ensure the
398    # controller constructors are called before the network constructor
399    #
400
401    # For an odd number of CPUs, still create the right number of controllers
402    TCC_bits = int(math.log(options.num_tccs, 2))
403
404    # This is the base crossbar that connects the L3s, Dirs, and cpu/gpu
405    # Clusters
406    crossbar_bw = 16 * options.num_compute_units #Assuming a 2GHz clock
407    mainCluster = Cluster(intBW = crossbar_bw)
408    for i in xrange(options.num_dirs):
409
410        dir_cntrl = DirCntrl(noTCCdir=True,TCC_select_num_bits = TCC_bits)
411        dir_cntrl.create(options, ruby_system, system)
412        dir_cntrl.number_of_TBEs = options.num_tbes
413        dir_cntrl.useL3OnWT = options.use_L3_on_WT
414        dir_cntrl.inclusiveDir = not options.nonInclusiveDir
415
416        # Connect the Directory controller to the ruby network
417        dir_cntrl.requestFromCores = MessageBuffer(ordered = True)
418        dir_cntrl.requestFromCores.slave = ruby_system.network.master
419
420        dir_cntrl.responseFromCores = MessageBuffer()
421        dir_cntrl.responseFromCores.slave = ruby_system.network.master
422
423        dir_cntrl.unblockFromCores = MessageBuffer()
424        dir_cntrl.unblockFromCores.slave = ruby_system.network.master
425
426        dir_cntrl.probeToCore = MessageBuffer()
427        dir_cntrl.probeToCore.master = ruby_system.network.slave
428
429        dir_cntrl.responseToCore = MessageBuffer()
430        dir_cntrl.responseToCore.master = ruby_system.network.slave
431
432        dir_cntrl.triggerQueue = MessageBuffer(ordered = True)
433        dir_cntrl.L3triggerQueue = MessageBuffer(ordered = True)
434        dir_cntrl.responseFromMemory = MessageBuffer()
435
436        exec("system.dir_cntrl%d = dir_cntrl" % i)
437        dir_cntrl_nodes.append(dir_cntrl)
438        mainCluster.add(dir_cntrl)
439
440    cpuCluster = Cluster(extBW = crossbar_bw, intBW=crossbar_bw)
441    for i in xrange((options.num_cpus + 1) / 2):
442
443        cp_cntrl = CPCntrl()
444        cp_cntrl.create(options, ruby_system, system)
445
446        exec("system.cp_cntrl%d = cp_cntrl" % i)
447        #
448        # Add controllers and sequencers to the appropriate lists
449        #
450        cpu_sequencers.extend([cp_cntrl.sequencer, cp_cntrl.sequencer1])
451
452        # Connect the CP controllers and the network
453        cp_cntrl.requestFromCore = MessageBuffer()
454        cp_cntrl.requestFromCore.master = ruby_system.network.slave
455
456        cp_cntrl.responseFromCore = MessageBuffer()
457        cp_cntrl.responseFromCore.master = ruby_system.network.slave
458
459        cp_cntrl.unblockFromCore = MessageBuffer()
460        cp_cntrl.unblockFromCore.master = ruby_system.network.slave
461
462        cp_cntrl.probeToCore = MessageBuffer()
463        cp_cntrl.probeToCore.slave = ruby_system.network.master
464
465        cp_cntrl.responseToCore = MessageBuffer()
466        cp_cntrl.responseToCore.slave = ruby_system.network.master
467
468        cp_cntrl.mandatoryQueue = MessageBuffer()
469        cp_cntrl.triggerQueue = MessageBuffer(ordered = True)
470
471        cpuCluster.add(cp_cntrl)
472
473    gpuCluster = Cluster(extBW = crossbar_bw, intBW = crossbar_bw)
474    for i in xrange(options.num_compute_units):
475
476        tcp_cntrl = TCPCntrl(TCC_select_num_bits = TCC_bits,
477                             issue_latency = 1,
478                             number_of_TBEs = 2560)
479        # TBEs set to max outstanding requests
480        tcp_cntrl.create(options, ruby_system, system)
481        tcp_cntrl.WB = options.WB_L1
482        tcp_cntrl.disableL1 = options.noL1
483
484        exec("system.tcp_cntrl%d = tcp_cntrl" % i)
485        #
486        # Add controllers and sequencers to the appropriate lists
487        #
488        cpu_sequencers.append(tcp_cntrl.coalescer)
489        tcp_cntrl_nodes.append(tcp_cntrl)
490
491        # Connect the CP (TCP) controllers to the ruby network
492        tcp_cntrl.requestFromTCP = MessageBuffer(ordered = True)
493        tcp_cntrl.requestFromTCP.master = ruby_system.network.slave
494
495        tcp_cntrl.responseFromTCP = MessageBuffer(ordered = True)
496        tcp_cntrl.responseFromTCP.master = ruby_system.network.slave
497
498        tcp_cntrl.unblockFromCore = MessageBuffer()
499        tcp_cntrl.unblockFromCore.master = ruby_system.network.slave
500
501        tcp_cntrl.probeToTCP = MessageBuffer(ordered = True)
502        tcp_cntrl.probeToTCP.slave = ruby_system.network.master
503
504        tcp_cntrl.responseToTCP = MessageBuffer(ordered = True)
505        tcp_cntrl.responseToTCP.slave = ruby_system.network.master
506
507        tcp_cntrl.mandatoryQueue = MessageBuffer()
508
509        gpuCluster.add(tcp_cntrl)
510
511    for i in xrange(options.num_sqc):
512
513        sqc_cntrl = SQCCntrl(TCC_select_num_bits = TCC_bits)
514        sqc_cntrl.create(options, ruby_system, system)
515
516        exec("system.sqc_cntrl%d = sqc_cntrl" % i)
517        #
518        # Add controllers and sequencers to the appropriate lists
519        #
520        cpu_sequencers.append(sqc_cntrl.sequencer)
521
522        # Connect the SQC controller to the ruby network
523        sqc_cntrl.requestFromSQC = MessageBuffer(ordered = True)
524        sqc_cntrl.requestFromSQC.master = ruby_system.network.slave
525
526        sqc_cntrl.probeToSQC = MessageBuffer(ordered = True)
527        sqc_cntrl.probeToSQC.slave = ruby_system.network.master
528
529        sqc_cntrl.responseToSQC = MessageBuffer(ordered = True)
530        sqc_cntrl.responseToSQC.slave = ruby_system.network.master
531
532        sqc_cntrl.mandatoryQueue = MessageBuffer()
533
534        # SQC also in GPU cluster
535        gpuCluster.add(sqc_cntrl)
536
537    # Because of wire buffers, num_tccs must equal num_tccdirs
538    numa_bit = 6
539
540    for i in xrange(options.num_tccs):
541
542        tcc_cntrl = TCCCntrl()
543        tcc_cntrl.create(options, ruby_system, system)
544        tcc_cntrl.l2_request_latency = options.gpu_to_dir_latency
545        tcc_cntrl.l2_response_latency = options.TCC_latency
546        tcc_cntrl_nodes.append(tcc_cntrl)
547        tcc_cntrl.WB = options.WB_L2
548        tcc_cntrl.number_of_TBEs = 2560 * options.num_compute_units
549
550        # Connect the TCC controllers to the ruby network
551        tcc_cntrl.requestFromTCP = MessageBuffer(ordered = True)
552        tcc_cntrl.requestFromTCP.slave = ruby_system.network.master
553
554        tcc_cntrl.responseToCore = MessageBuffer(ordered = True)
555        tcc_cntrl.responseToCore.master = ruby_system.network.slave
556
557        tcc_cntrl.probeFromNB = MessageBuffer()
558        tcc_cntrl.probeFromNB.slave = ruby_system.network.master
559
560        tcc_cntrl.responseFromNB = MessageBuffer()
561        tcc_cntrl.responseFromNB.slave = ruby_system.network.master
562
563        tcc_cntrl.requestToNB = MessageBuffer(ordered = True)
564        tcc_cntrl.requestToNB.master = ruby_system.network.slave
565
566        tcc_cntrl.responseToNB = MessageBuffer()
567        tcc_cntrl.responseToNB.master = ruby_system.network.slave
568
569        tcc_cntrl.unblockToNB = MessageBuffer()
570        tcc_cntrl.unblockToNB.master = ruby_system.network.slave
571
572        tcc_cntrl.triggerQueue = MessageBuffer(ordered = True)
573
574        exec("system.tcc_cntrl%d = tcc_cntrl" % i)
575        # connect all of the wire buffers between L3 and dirs up
576        # TCC cntrls added to the GPU cluster
577        gpuCluster.add(tcc_cntrl)
578
579    # Assuming no DMA devices
580    assert(len(dma_devices) == 0)
581
582    # Add cpu/gpu clusters to main cluster
583    mainCluster.add(cpuCluster)
584    mainCluster.add(gpuCluster)
585
586    ruby_system.network.number_of_virtual_networks = 10
587
588    return (cpu_sequencers, dir_cntrl_nodes, mainCluster)
589