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authorBrad Beckmann <Brad.Beckmann@amd.com>2012-07-10 22:51:53 -0700
committerBrad Beckmann <Brad.Beckmann@amd.com>2012-07-10 22:51:53 -0700
commit11b725c19da4d08ae471678f6da867c67e3c15b5 (patch)
tree58bd0ebd09b404f0e860531bda80195f234d0bf2 /configs/topologies/Cluster.py
parent745274cbd4851b3bf725b24138c1fd13746492ec (diff)
downloadgem5-11b725c19da4d08ae471678f6da867c67e3c15b5.tar.xz
ruby: changes how Topologies are created
Instead of just passing a list of controllers to the makeTopology function in src/mem/ruby/network/topologies/<Topo>.py we pass in a function pointer which knows how to make the topology, possibly with some extra state set in the configs/ruby/<protocol>.py file. Thus, we can move all of the files from network/topologies to configs/topologies. A new class BaseTopology is added which all topologies in configs/topologies must inheirit from and follow its API. --HG-- rename : src/mem/ruby/network/topologies/Crossbar.py => configs/topologies/Crossbar.py rename : src/mem/ruby/network/topologies/Mesh.py => configs/topologies/Mesh.py rename : src/mem/ruby/network/topologies/MeshDirCorners.py => configs/topologies/MeshDirCorners.py rename : src/mem/ruby/network/topologies/Pt2Pt.py => configs/topologies/Pt2Pt.py rename : src/mem/ruby/network/topologies/Torus.py => configs/topologies/Torus.py
Diffstat (limited to 'configs/topologies/Cluster.py')
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diff --git a/configs/topologies/Cluster.py b/configs/topologies/Cluster.py
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+# Copyright (c) 2012 Advanced Micro Devices, Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Jason Power
+
+
+from BaseTopology import BaseTopology
+
+class Cluster(BaseTopology):
+ """ A cluster is a group of nodes which are all one hop from eachother
+ Clusters can also contain other clusters
+ When creating this kind of topology, return a single cluster (usually
+ the root cluster) from create_system in configs/ruby/<protocol>.py
+ """
+
+ _num_int_links = 0
+ _num_ext_links = 0
+ _num_routers = 0
+
+ # Below methods for auto counting
+ @classmethod
+ def num_int_links(cls):
+ cls._num_int_links += 1
+ return cls._num_int_links - 1
+ @classmethod
+ def num_ext_links(cls):
+ cls._num_ext_links += 1
+ return cls._num_ext_links - 1
+ @classmethod
+ def num_routers(cls):
+ cls._num_routers += 1
+ return cls._num_routers - 1
+
+ def __init__(self, intBW=0, extBW=0, intLatency=0, extLatency=0):
+ """ internalBandwidth is bandwidth of all links within the cluster
+ externalBandwidth is bandwidth from this cluster to any cluster
+ connecting to it.
+ internal/externalLatency are similar
+ **** When creating a cluster with sub-clusters, the sub-cluster
+ external bandwidth overrides the internal bandwidth of the
+ super cluster
+ """
+ self.nodes = []
+ self.router = None # created in makeTopology
+ self.intBW = intBW
+ self.extBW = extBW
+ self.intLatency = intLatency
+ self.extLatency = extLatency
+
+ def add(self, node):
+ self.nodes.append(node)
+
+ def makeTopology(self, options, IntLink, ExtLink, Router):
+ """ Recursively make all of the links and routers
+ """
+ routers = []
+ int_links = []
+ ext_links = []
+
+ # make a router to connect all of the nodes
+ self.router = Router(router_id=self.num_routers())
+ routers.append(self.router)
+ for node in self.nodes:
+ if type(node) == Cluster:
+ subRouters, subIntLinks, subExtLinks = node.makeTopology(options, IntLink, ExtLink, Router)
+ routers += subRouters
+ int_links += subIntLinks
+ ext_links += subExtLinks
+
+ # connect this cluster to the router
+ link = IntLink(link_id=self.num_int_links(), node_a=self.router, node_b=node.router)
+ if node.extBW:
+ link.bandwidth_factor = node.extBW
+ elif self.intBW: # if there is an interanl b/w for this node and no ext b/w to override
+ link.bandwidth_factor = self.intBW
+
+ if node.extLatency:
+ link.latency = node.extLatency
+ elif self.intLatency:
+ link.latency = self.intLatency
+
+ int_links.append(link)
+ else:
+ # node is just a controller connect it to the router via a ext_link
+ link = ExtLink(link_id=self.num_ext_links(), ext_node=node, int_node=self.router)
+ if self.intBW:
+ link.bandwidth_factor = self.intBW
+ if self.intLatency:
+ link.latency = self.intLatency
+
+ ext_links.append(link)
+
+ return routers, int_links, ext_links
+