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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;
// Currently Garnet only supports uniform bandwidth for all
// links and network interfaces.
for (std::vector<BasicExtLink*>::const_iterator i = p->ext_links.begin();
i != p->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 = p->int_links.begin();
i != p->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);
for (int i = 0; i < m_virtual_networks; i++) {
m_in_use[i] = false;
m_ordered[i] = false;
}
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::regStats()
{
m_flits_received
.init(m_virtual_networks)
.name(name() + ".flits_received")
.flags(Stats::pdf | Stats::total | Stats::nozero | Stats::oneline)
;
m_flits_injected
.init(m_virtual_networks)
.name(name() + ".flits_injected")
.flags(Stats::pdf | Stats::total | Stats::nozero | Stats::oneline)
;
m_network_latency
.init(m_virtual_networks)
.name(name() + ".network_latency")
.flags(Stats::oneline)
;
m_queueing_latency
.init(m_virtual_networks)
.name(name() + ".queueing_latency")
.flags(Stats::oneline)
;
for (int i = 0; i < m_virtual_networks; i++) {
m_flits_received.subname(i, csprintf("vnet-%i", i));
m_flits_injected.subname(i, csprintf("vnet-%i", i));
m_network_latency.subname(i, csprintf("vnet-%i", i));
m_queueing_latency.subname(i, csprintf("vnet-%i", i));
}
m_avg_vnet_latency
.name(name() + ".average_vnet_latency")
.flags(Stats::oneline);
m_avg_vnet_latency = m_network_latency / m_flits_received;
m_avg_vqueue_latency
.name(name() + ".average_vqueue_latency")
.flags(Stats::oneline);
m_avg_vqueue_latency = m_queueing_latency / m_flits_received;
m_avg_network_latency.name(name() + ".average_network_latency");
m_avg_network_latency = sum(m_network_latency) / sum(m_flits_received);
m_avg_queueing_latency.name(name() + ".average_queueing_latency");
m_avg_queueing_latency = sum(m_queueing_latency) / sum(m_flits_received);
m_avg_latency.name(name() + ".average_latency");
m_avg_latency = m_avg_network_latency + m_avg_queueing_latency;
}
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