Topology.hh revision 6285 
1
2/*
3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/*
31 * Topology.hh
32 *
33 * Description: The topology here is configurable; it can be a hierachical
34 *              (default one) or a 2D torus or a 2D torus with half switches
35 *              killed. I think all input port has a
36 *              one-input-one-output switch connected just to control and
37 *              bandwidth, since we don't control bandwidth on input ports.
38 *              Basically, the class has a vector of nodes and edges. First
39 *              2*m_nodes elements in the node vector are input and output
40 *              ports. Edges are represented in two vectors of src and dest
41 *              nodes. All edges have latency.
42 *
43 * $Id$
44 *
45 * */
46
47#ifndef TOPOLOGY_H
48#define TOPOLOGY_H
49
50#include "mem/ruby/common/Global.hh"
51#include "mem/gems_common/Vector.hh"
52#include "mem/ruby/system/NodeID.hh"
53
54class Network;
55class NetDest;
56
57typedef Vector < Vector <int> > Matrix;
58
59class Topology {
60public:
61  // Constructors
62  //  Topology(Network* network_ptr, int number_of_nodes);
63  Topology(const string & name);
64
65  // Destructor
66  virtual ~Topology() {}
67
68  virtual void init(const vector<string> & argv);
69
70  // Public Methods
71  void makeTopology();
72  int numSwitches() const { return m_number_of_switches; }
73  void createLinks(bool isReconfiguration);
74
75  const string getName() { return m_name; }
76  void printStats(ostream& out) const {}
77  void clearStats() {}
78  void printConfig(ostream& out) const;
79  void print(ostream& out) const { out << "[Topology]"; }
80
81protected:
82  // Private Methods
83  void init();
84  SwitchID newSwitchID();
85  void addLink(SwitchID src, SwitchID dest, int link_latency);
86  void addLink(SwitchID src, SwitchID dest, int link_latency, int bw_multiplier);
87  void addLink(SwitchID src, SwitchID dest, int link_latency, int bw_multiplier, int link_weight);
88  void makeLink(SwitchID src, SwitchID dest, const NetDest& routing_table_entry, int link_latency, int weight, int bw_multiplier, bool isReconfiguration);
89
90  //  void makeSwitchesPerChip(Vector< Vector < SwitchID > > &nodePairs, Vector<int> &latencies, Vector<int> &bw_multis, int numberOfChips);
91
92  string getDesignStr();
93  // Private copy constructor and assignment operator
94  Topology(const Topology& obj);
95  Topology& operator=(const Topology& obj);
96
97  // Data Members (m_ prefix)
98  string m_name;
99  bool m_print_config;
100  Network* m_network_ptr;
101  string m_connections;
102  NodeID m_nodes;
103  int m_number_of_switches;
104
105  Vector<SwitchID> m_links_src_vector;
106  Vector<SwitchID> m_links_dest_vector;
107  Vector<int> m_links_latency_vector;
108  Vector<int> m_links_weight_vector;
109  Vector<int> m_bw_multiplier_vector;
110
111  Matrix m_component_latencies;
112  Matrix m_component_inter_switches;
113};
114
115// Output operator declaration
116ostream& operator<<(ostream& out, const Topology& obj);
117
118// ******************* Definitions *******************
119
120// Output operator definition
121extern inline
122ostream& operator<<(ostream& out, const Topology& obj)
123{
124  obj.print(out);
125  out << flush;
126  return out;
127}
128
129#endif
130