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/*
* Copyright (c) 2008 Princeton University
* 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: Niket Agarwal
*/
#include "mem/ruby/buffers/MessageBuffer.hh"
#include "mem/ruby/network/BasicLink.hh"
#include "mem/ruby/network/Topology.hh"
#include "mem/ruby/network/garnet/BaseGarnetNetwork.hh"
using namespace std;
BaseGarnetNetwork::BaseGarnetNetwork(const Params *p)
: Network(p)
{
m_ni_flit_size = p->ni_flit_size;
m_vcs_per_vnet = p->vcs_per_vnet;
m_enable_fault_model = p->enable_fault_model;
if (m_enable_fault_model)
fault_model = p->fault_model;
m_ruby_start = 0;
// Currently Garnet only supports uniform bandwidth for all
// links and network interfaces.
for (std::vector<BasicExtLink*>::const_iterator i =
m_topology_ptr->params()->ext_links.begin();
i != m_topology_ptr->params()->ext_links.end(); ++i) {
BasicExtLink* ext_link = (*i);
if (ext_link->params()->bandwidth_factor != m_ni_flit_size) {
fatal("Garnet only supports uniform bw across all links and NIs\n");
}
}
for (std::vector<BasicIntLink*>::const_iterator i =
m_topology_ptr->params()->int_links.begin();
i != m_topology_ptr->params()->int_links.end(); ++i) {
BasicIntLink* int_link = (*i);
if (int_link->params()->bandwidth_factor != m_ni_flit_size) {
fatal("Garnet only supports uniform bw across all links and NIs\n");
}
}
// Allocate to and from queues
// Queues that are getting messages from protocol
m_toNetQueues.resize(m_nodes);
// Queues that are feeding the protocol
m_fromNetQueues.resize(m_nodes);
m_in_use.resize(m_virtual_networks);
m_ordered.resize(m_virtual_networks);
m_flits_received.resize(m_virtual_networks);
m_flits_injected.resize(m_virtual_networks);
m_network_latency.resize(m_virtual_networks);
m_queueing_latency.resize(m_virtual_networks);
for (int i = 0; i < m_virtual_networks; i++) {
m_in_use[i] = false;
m_ordered[i] = false;
m_flits_received[i] = 0;
m_flits_injected[i] = 0;
m_network_latency[i] = 0.0;
m_queueing_latency[i] = 0.0;
}
for (int node = 0; node < m_nodes; node++) {
// Setting number of virtual message buffers per Network Queue
m_toNetQueues[node].resize(m_virtual_networks);
m_fromNetQueues[node].resize(m_virtual_networks);
// Instantiating the Message Buffers that
// interact with the coherence protocol
for (int j = 0; j < m_virtual_networks; j++) {
m_toNetQueues[node][j] = new MessageBuffer();
m_fromNetQueues[node][j] = new MessageBuffer();
}
}
}
void
BaseGarnetNetwork::init()
{
Network::init();
}
MessageBuffer*
BaseGarnetNetwork::getToNetQueue(NodeID id, bool ordered, int network_num,
string vnet_type)
{
checkNetworkAllocation(id, ordered, network_num, vnet_type);
return m_toNetQueues[id][network_num];
}
MessageBuffer*
BaseGarnetNetwork::getFromNetQueue(NodeID id, bool ordered, int network_num,
string vnet_type)
{
checkNetworkAllocation(id, ordered, network_num, vnet_type);
return m_fromNetQueues[id][network_num];
}
void
BaseGarnetNetwork::clearStats()
{
m_ruby_start = curCycle();
}
Time
BaseGarnetNetwork::getRubyStartTime()
{
return m_ruby_start;
}
void
BaseGarnetNetwork::printStats(ostream& out) const
{
out << endl;
out << "Network Stats" << endl;
out << "-------------" << endl;
out << endl;
printPerformanceStats(out);
printLinkStats(out);
printPowerStats(out);
m_topology_ptr->printStats(out);
}
void
BaseGarnetNetwork::printPerformanceStats(ostream& out) const
{
int total_flits_injected = 0;
int total_flits_received = 0;
int total_network_latency = 0.0;
int total_queueing_latency = 0.0;
for (int i = 0; i < m_virtual_networks; i++) {
if (!m_in_use[i])
continue;
out << "[Vnet " << i << "]: flits injected = "
<< m_flits_injected[i] << endl;
out << "[Vnet " << i << "]: flits received = "
<< m_flits_received[i] << endl;
out << "[Vnet " << i << "]: average network latency = "
<< ((double) m_network_latency[i] / (double) m_flits_received[i])
<< endl;
out << "[Vnet " << i << "]: average queueing (at source NI) latency = "
<< ((double) m_queueing_latency[i] / (double) m_flits_received[i])
<< endl;
out << endl;
total_flits_injected += m_flits_injected[i];
total_flits_received += m_flits_received[i];
total_network_latency += m_network_latency[i];
total_queueing_latency += m_queueing_latency[i];
}
out << "Total flits injected = " << total_flits_injected << endl;
out << "Total flits received = " << total_flits_received << endl;
out << "Average network latency = "
<< ((double) total_network_latency/ (double) total_flits_received) << endl;
out << "Average queueing (at source NI) latency = "
<< ((double) total_queueing_latency/ (double) total_flits_received) << endl;
out << "Average latency = "
<< ((double) (total_queueing_latency + total_network_latency) /
(double) total_flits_received)<< endl;
out << "-------------" << endl;
out << endl;
}
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