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ruby: garnet2.0

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Revamped version of garnet with more optimized single-cycle routers,
more configurability, and cleaner code.
This commit is contained in:
Tushar Krishna
2016-10-06 14:35:22 -04:00
parent b512f4bf71
commit dbe8892b76
44 changed files with 4982 additions and 40 deletions
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55
configs/network/Network.py
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@@ -38,25 +38,44 @@ def define_options(parser):
parser.add_option("--topology", type="string", default="Crossbar",
help="check configs/topologies for complete set")
parser.add_option("--mesh-rows", type="int", default=1,
parser.add_option("--mesh-rows", type="int", default=0,
help="the number of rows in the mesh topology")
parser.add_option("--garnet-network", type="choice",
choices=['fixed', 'flexible'], help="'fixed'|'flexible'")
parser.add_option("--network-fault-model", action="store_true", default=False,
help="enable network fault model: see src/mem/ruby/network/fault_model/")
parser.add_option("--network", type="choice", default="simple",
choices=['simple', 'garnet2.0'],
help="'simple'|'garnet2.0'")
parser.add_option("--router-latency", action="store", type="int",
default=1,
help="""number of pipeline stages in the garnet router.
Has to be >= 1.
Can be over-ridden on a per router basis
in the topology file.""")
parser.add_option("--link-latency", action="store", type="int", default=1,
help="""latency of each link the simple/garnet networks.
Has to be >= 1.
Can be over-ridden on a per link basis
in the topology file.""")
parser.add_option("--link-width-bits", action="store", type="int",
default=128,
help="width in bits for all links inside garnet.")
parser.add_option("--vcs-per-vnet", action="store", type="int", default=4,
help="""number of virtual channels per virtual network
inside garnet network.""")
parser.add_option("--routing-algorithm", action="store", type="int",
default=0,
help="""routing algorithm in network.
0: weight-based table
1: XY (for Mesh. see garnet2.0/RoutingUnit.cc)
2: Custom (see garnet2.0/RoutingUnit.cc""")
parser.add_option("--network-fault-model", action="store_true",
default=False,
help="""enable network fault model:
see src/mem/ruby/network/fault_model/""")
def create_network(options, ruby):
# Set the network classes based on the command line options
if options.garnet_network == "fixed":
NetworkClass = GarnetNetwork_d
IntLinkClass = GarnetIntLink_d
ExtLinkClass = GarnetExtLink_d
RouterClass = GarnetRouter_d
InterfaceClass = GarnetNetworkInterface_d
elif options.garnet_network == "flexible":
if options.network == "garnet2.0":
NetworkClass = GarnetNetwork
IntLinkClass = GarnetIntLink
ExtLinkClass = GarnetExtLink
@@ -79,7 +98,13 @@ def create_network(options, ruby):
def init_network(options, network, InterfaceClass):
if options.garnet_network is None:
if options.network == "garnet2.0":
network.num_rows = options.mesh_rows
network.vcs_per_vnet = options.vcs_per_vnet
network.ni_flit_size = options.link_width_bits / 8
network.routing_algorithm = options.routing_algorithm
if options.network == "simple":
network.setup_buffers()
if InterfaceClass != None:
@@ -88,6 +113,6 @@ def init_network(options, network, InterfaceClass):
network.netifs = netifs
if options.network_fault_model:
assert(options.garnet_network == "fixed")
assert(options.network == "garnet2.0")
network.enable_fault_model = True
network.fault_model = FaultModel()