59def makeCrossbar(nodes):
60 ext_links = [ExtLink(ext_node=n, int_node=i)
61 for (i, n) in enumerate(nodes)]
62 xbar = len(nodes) # node ID for crossbar switch
63 int_links = [IntLink(node_a=i, node_b=xbar) for i in range(len(nodes))]
64 return Topology(ext_links=ext_links, int_links=int_links,
65 num_int_nodes=len(nodes)+1)
66
67def makeMesh(nodes, num_routers, num_rows):
68 #
69 # There must be an evenly divisible number of cntrls to routers
70 # Also, obviously the number or rows must be <= the number of routers
71 #
72 cntrls_per_router, remainder = divmod(len(nodes), num_routers)
73 assert(num_rows <= num_routers)
74 num_columns = int(num_routers / num_rows)
75 assert(num_columns * num_rows == num_routers)
76
77 #
78 # Add all but the remainder nodes to the list of nodes to be uniformly
79 # distributed across the network.
80 #
81 network_nodes = []
82 remainder_nodes = []
83 for node_index in xrange(len(nodes)):
84 if node_index < (len(nodes) - remainder):
85 network_nodes.append(nodes[node_index])
86 else:
87 remainder_nodes.append(nodes[node_index])
88
89 #
90 # Connect each node to the appropriate router
91 #
92 ext_links = []
93 for (i, n) in enumerate(network_nodes):
94 cntrl_level, router_id = divmod(i, num_routers)
95 assert(cntrl_level < cntrls_per_router)
96 ext_links.append(ExtLink(ext_node=n, int_node=router_id))
97
98 #
99 # Connect the remainding nodes to router 0. These should only be DMA nodes.
100 #
101 for (i, node) in enumerate(remainder_nodes):
102 assert(node.type == 'DMA_Controller')
103 assert(i < remainder)
104 ext_links.append(ExtLink(ext_node=node, int_node=0))
105
106 #
107 # Create the mesh links. First row (east-west) links then column
108 # (north-south) links
109 #
110 int_links = []
111 for row in xrange(num_rows):
112 for col in xrange(num_columns):
113 if (col + 1 < num_columns):
114 east_id = col + (row * num_columns)
115 west_id = (col + 1) + (row * num_columns)
116 int_links.append(IntLink(node_a=east_id,
117 node_b=west_id,
118 weight=1))
119 for col in xrange(num_columns):
120 for row in xrange(num_rows):
121 if (row + 1 < num_rows):
122 north_id = col + (row * num_columns)
123 south_id = col + ((row + 1) * num_columns)
124 int_links.append(IntLink(node_a=north_id,
125 node_b=south_id,
126 weight=2))
127
128 return Topology(ext_links=ext_links,
129 int_links=int_links,
130 num_int_nodes=num_routers)
131
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59class RubyNetwork(SimObject): 60 type = 'RubyNetwork' 61 cxx_class = 'Network' 62 abstract = True 63 number_of_virtual_networks = Param.Int(10, ""); 64 topology = Param.Topology(""); 65 buffer_size = Param.Int(0, 66 "default buffer size; 0 indicates infinite buffering"); 67 endpoint_bandwidth = Param.Int(10000, ""); 68 adaptive_routing = Param.Bool(False, "enable adaptive routing"); 69 link_latency = Param.Int(1, 70 "local memory latency ?? NetworkLinkLatency"); 71 control_msg_size = Param.Int(8, "");
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