003c08fa90
This patch makes the internal links within the network topology unidirectional, thus allowing any deadlock-free routing algorithms to be specified from the topology itself using weights. This patch also renames Mesh.py and MeshDirCorners.py to Mesh_XY.py and MeshDirCorners_XY.py (Mesh with XY routing). It also adds a Mesh_westfirst.py and CrossbarGarnet.py topologies.
128 lines
5.2 KiB
Python
128 lines
5.2 KiB
Python
# Copyright (c) 2012 Advanced Micro Devices, Inc.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Jason Power
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from BaseTopology import BaseTopology
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class Cluster(BaseTopology):
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""" A cluster is a group of nodes which are all one hop from eachother
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Clusters can also contain other clusters
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When creating this kind of topology, return a single cluster (usually
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the root cluster) from create_system in configs/ruby/<protocol>.py
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"""
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_num_int_links = 0
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_num_ext_links = 0
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_num_routers = 0
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# Below methods for auto counting
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@classmethod
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def num_int_links(cls):
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cls._num_int_links += 1
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return cls._num_int_links - 1
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@classmethod
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def num_ext_links(cls):
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cls._num_ext_links += 1
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return cls._num_ext_links - 1
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@classmethod
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def num_routers(cls):
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cls._num_routers += 1
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return cls._num_routers - 1
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def __init__(self, intBW=0, extBW=0, intLatency=0, extLatency=0):
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""" internalBandwidth is bandwidth of all links within the cluster
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externalBandwidth is bandwidth from this cluster to any cluster
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connecting to it.
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internal/externalLatency are similar
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**** When creating a cluster with sub-clusters, the sub-cluster
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external bandwidth overrides the internal bandwidth of the
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super cluster
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"""
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self.nodes = []
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self.router = None # created in makeTopology
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self.intBW = intBW
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self.extBW = extBW
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self.intLatency = intLatency
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self.extLatency = extLatency
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def add(self, node):
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self.nodes.append(node)
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def makeTopology(self, options, network, IntLink, ExtLink, Router):
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""" Recursively make all of the links and routers
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"""
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# make a router to connect all of the nodes
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self.router = Router(router_id=self.num_routers())
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network.routers.append(self.router)
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for node in self.nodes:
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if type(node) == Cluster:
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node.makeTopology(options, network, IntLink, ExtLink, Router)
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# connect this cluster to the router
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link_out = IntLink(link_id=self.num_int_links(), src_node=self.router,
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dst_node_=node.router)
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link_in = IntLink(link_id=self.num_int_links(), src_node=node.router,
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dst_node_=self.router)
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if node.extBW:
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link_out.bandwidth_factor = node.extBW
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link_in.bandwidth_factor = node.extBW
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# if there is an internal b/w for this node
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# and no ext b/w to override
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elif self.intBW:
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link_out.bandwidth_factor = self.intBW
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link_in.bandwidth_factor = self.intBW
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if node.extLatency:
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link_out.latency = node.extLatency
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link_in.latency = node.extLatency
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elif self.intLatency:
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link_out.latency = self.intLatency
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link_in.latency = self.intLatency
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network.int_links.append(link_out)
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network.int_links.append(link_in)
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else:
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# node is just a controller,
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# connect it to the router via a ext_link
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link = ExtLink(link_id=self.num_ext_links(), ext_node=node,
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int_node=self.router)
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if self.intBW:
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link.bandwidth_factor = self.intBW
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if self.intLatency:
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link.latency = self.intLatency
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network.ext_links.append(link)
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def __len__(self):
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return len([i for i in self.nodes if type(i) != Cluster]) + \
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sum([len(i) for i in self.nodes if type(i) == Cluster])
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