src/mem/ruby/network/garnet/BaseGarnetNetwork.cc

   1 /*
   2  * Copyright (c) 2008 Princeton University
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Niket Agarwal
  29  */
  30
  31 #include "mem/ruby/network/garnet/BaseGarnetNetwork.hh"
  32 #include "mem/ruby/network/MessageBuffer.hh"
  33
  34 using namespace std;
  35
  36 BaseGarnetNetwork::BaseGarnetNetwork(const Params *p)
  37     : Network(p)
  38 {
  39     m_ni_flit_size = p->ni_flit_size;
  40     m_vcs_per_vnet = p->vcs_per_vnet;
  41     m_enable_fault_model = p->enable_fault_model;
  42     if (m_enable_fault_model)
  43         fault_model = p->fault_model;
  44
  45     // Currently Garnet only supports uniform bandwidth for all
  46     // links and network interfaces.
  47     for (std::vector<BasicExtLink*>::const_iterator i = p->ext_links.begin();
  48          i != p->ext_links.end(); ++i) {
  49         BasicExtLink* ext_link = (*i);
  50         if (ext_link->params()->bandwidth_factor != m_ni_flit_size) {
  51             fatal("Garnet only supports uniform bw across all links and NIs\n");
  52         }
  53     }
  54     for (std::vector<BasicIntLink*>::const_iterator i =  p->int_links.begin();
  55          i != p->int_links.end(); ++i) {
  56         BasicIntLink* int_link = (*i);
  57         if (int_link->params()->bandwidth_factor != m_ni_flit_size) {
  58             fatal("Garnet only supports uniform bw across all links and NIs\n");
  59         }
  60     }
  61 }
  62
  63 void
  64 BaseGarnetNetwork::init()
  65 {
  66     Network::init();
  67 }
  68
  69 void
  70 BaseGarnetNetwork::setToNetQueue(NodeID id, bool ordered, int network_num,
  71                                  string vnet_type, MessageBuffer *b)
  72 {
  73     checkNetworkAllocation(id, ordered, network_num, vnet_type);
  74     m_toNetQueues[id][network_num] = b;
  75 }
  76
  77 void
  78 BaseGarnetNetwork::setFromNetQueue(NodeID id, bool ordered, int network_num,
  79                                    string vnet_type, MessageBuffer *b)
  80 {
  81     checkNetworkAllocation(id, ordered, network_num, vnet_type);
  82     m_fromNetQueues[id][network_num] = b;
  83 }
  84
  85 void
  86 BaseGarnetNetwork::regStats()
  87 {
  88     m_flits_received
  89         .init(m_virtual_networks)
  90         .name(name() + ".flits_received")
  91         .flags(Stats::pdf | Stats::total | Stats::nozero | Stats::oneline)
  92         ;
  93
  94     m_flits_injected
  95         .init(m_virtual_networks)
  96         .name(name() + ".flits_injected")
  97         .flags(Stats::pdf | Stats::total | Stats::nozero | Stats::oneline)
  98         ;
  99
 100     m_network_latency
 101         .init(m_virtual_networks)
 102         .name(name() + ".network_latency")
 103         .flags(Stats::oneline)
 104         ;
 105
 106     m_queueing_latency
 107         .init(m_virtual_networks)
 108         .name(name() + ".queueing_latency")
 109         .flags(Stats::oneline)
 110         ;
 111
 112     for (int i = 0; i < m_virtual_networks; i++) {
 113         m_flits_received.subname(i, csprintf("vnet-%i", i));
 114         m_flits_injected.subname(i, csprintf("vnet-%i", i));
 115         m_network_latency.subname(i, csprintf("vnet-%i", i));
 116         m_queueing_latency.subname(i, csprintf("vnet-%i", i));
 117     }
 118
 119     m_avg_vnet_latency
 120         .name(name() + ".average_vnet_latency")
 121         .flags(Stats::oneline);
 122     m_avg_vnet_latency = m_network_latency / m_flits_received;
 123
 124     m_avg_vqueue_latency
 125         .name(name() + ".average_vqueue_latency")
 126         .flags(Stats::oneline);
 127     m_avg_vqueue_latency = m_queueing_latency / m_flits_received;
 128
 129     m_avg_network_latency.name(name() + ".average_network_latency");
 130     m_avg_network_latency = sum(m_network_latency) / sum(m_flits_received);
 131
 132     m_avg_queueing_latency.name(name() + ".average_queueing_latency");
 133     m_avg_queueing_latency = sum(m_queueing_latency) / sum(m_flits_received);
 134
 135     m_avg_latency.name(name() + ".average_latency");
 136     m_avg_latency = m_avg_network_latency + m_avg_queueing_latency;
 137 }