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gem5/ext/dsent/model/electrical/MatrixArbiter.cc

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ext: dsent: adds a Python interface, drops C++ one This patch extensively modifies DSENT so that it can be accessed using Python. To access the Python interface, DSENT needs to compiled as a shared library. For this purpose a CMakeLists.txt file has been added. Some of the code that is not required is being removed.
2014-10-11 23:16:00 +02:00
/* Copyright (c) 2012 Massachusetts Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
ext: add the source code for DSENT This patch adds a tool called DSENT to the ext/ directory. DSENT is a tool that models power and area for on-chip networks. The next patch adds a script for using the tool.
2014-10-11 22:02:23 +02:00
#include "model/electrical/MatrixArbiter.h"
#include <cmath>
#include <vector>
#include "model/PortInfo.h"
#include "model/EventInfo.h"
#include "model/TransitionInfo.h"
#include "model/ModelGen.h"
#include "model/std_cells/StdCell.h"
#include "model/std_cells/StdCellLib.h"
namespace DSENT
{
using std::abs;
using std::vector;
MatrixArbiter::MatrixArbiter(const String& instance_name_, const TechModel* tech_model_)
: ElectricalModel(instance_name_, tech_model_)
{
initParameters();
initProperties();
}
MatrixArbiter::~MatrixArbiter()
{}
void MatrixArbiter::initParameters()
{
addParameterName("NumberRequests");
return;
}
void MatrixArbiter::initProperties()
{
return;
}
MatrixArbiter* MatrixArbiter::clone() const
{
// TODO
return NULL;
}
void MatrixArbiter::constructModel()
{
// Get parameters
unsigned int number_requests = getParameter("NumberRequests").toUInt();
ASSERT(number_requests > 0, "[Error] " + getInstanceName() +
" -> Number of requests must be > 0!");
// Connect ports
createInputPort("CK");
for(unsigned int i = 0; i < number_requests; ++i)
{
createInputPort("Request" + (String)i);
createOutputPort("Grant" + (String)i);
}
// Create area, power, event results
createElectricalResults();
getEventInfo("Idle")->setStaticTransitionInfos();
getEventInfo("Idle")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
// for(unsigned int i = 0; i <= number_requests; ++i)
// {
// // Create arbitrate event with i requests
// createElectricalEventResult("Arbitrate" + (String)i);
// EventInfo* event_info = getEventInfo("Arbitrate" + (String)i);
// event_info->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
//
// for(unsigned int j = 0; j < i; ++j)
// {
// event_info->setTransitionInfo("Request" + (String)j, TransitionInfo(0.0, 0.0, 1.0));
// }
// for(unsigned int j = i; j < number_requests; ++j)
// {
// event_info->setTransitionInfo("Request" + (String)j, TransitionInfo(1.0, 0.0, 0.0));
//
// }
// //double P_0 = (double)(number_requests - i) / (double)(number_requests);
// //double P_1 = (double)(i) / (double)(number_requests);
// //TransitionInfo trans(P_0 * P_0, P_0 * P_1, P_1 * P_1);
//
// //for(unsigned int j = 0; j < number_requests; ++j)
// //{
// // event_info->setTransitionInfo("Request" + (String)j, trans);
// //}
// }
createElectricalEventResult("Arbitrate");
getEventInfo("Arbitrate")->setTransitionInfo("CK", TransitionInfo(0.0, 1.0, 0.0));
for(unsigned int i = 0; i < number_requests; ++i)
{
getEventInfo("Arbitrate")->setTransitionInfo("Request" + (String)i, TransitionInfo(0.25, 0.25, 0.25));
}
if(number_requests == 1)
{
assign("Grant0", "Request0");
}
else
{
// Init components
vector<String> g_inv_names(number_requests, "");
vector<StdCell*> g_invs(number_requests, NULL);
vector<String> g_and2_names(number_requests, "");
vector<StdCell*> g_and2s(number_requests, NULL);
for(unsigned int i = 0; i < number_requests; ++i)
{
g_inv_names[i] = "G_INV" + (String)i;
g_and2_names[i] = "G_AND2" + (String)i;
g_invs[i] = getTechModel()->getStdCellLib()->createStdCell("INV", g_inv_names[i]);
g_invs[i]->construct();
g_and2s[i] = getTechModel()->getStdCellLib()->createStdCell("AND2", g_and2_names[i]);
g_and2s[i]->construct();
}
unsigned int number_states = (number_requests - 1) * number_requests / 2;
vector<String> w_or2_names(number_states, "");
vector<StdCell*> w_or2s(number_states, NULL);
vector<String> w_and2_names(number_states, "");
vector<StdCell*> w_and2s(number_states, NULL);
vector<String> w_inv_names(number_states, "");
vector<StdCell*> w_invs(number_states, NULL);
vector<String> w_dff_names(number_states, "");
vector<StdCell*> w_dffs(number_states, NULL);
vector<String> dis_and2_names(number_states * 2, "");
vector<StdCell*> dis_and2s(number_states * 2, NULL);
vector<String> dis_inv_names(number_states, "");
vector<StdCell*> dis_invs(number_states, NULL);
unsigned int state_count = 0;
for(unsigned int i = 0; i < number_requests; ++i)
{
for(unsigned int j = i + 1; j < number_requests; ++j)
{
w_or2_names[state_count] = String::format("W_OR2_%d_%d", i, j);
w_and2_names[state_count] = String::format("W_AND2_%d_%d", i, j);
w_inv_names[state_count] = String::format("W_INV_%d_%d", i, j);
w_dff_names[state_count] = String::format("W_DFF_%d_%d", i, j);
w_or2s[state_count] = getTechModel()->getStdCellLib()->createStdCell("OR2", w_or2_names[state_count]);
w_or2s[state_count]->construct();
w_and2s[state_count] = getTechModel()->getStdCellLib()->createStdCell("AND2", w_and2_names[state_count]);
w_and2s[state_count]->construct();
w_invs[state_count] = getTechModel()->getStdCellLib()->createStdCell("INV", w_inv_names[state_count]);
w_invs[state_count]->construct();
w_dffs[state_count] = getTechModel()->getStdCellLib()->createStdCell("DFFQ", w_dff_names[state_count]);
w_dffs[state_count]->construct();
dis_inv_names[state_count] = String::format("Dis_INV_%d_%d", i, j);
dis_and2_names[state_count] = String::format("Dis_AND2_%d_%d", i, j);
dis_and2_names[state_count + number_states] = String::format("Dis_AND2_%d_%d", j, i);
dis_invs[state_count] = getTechModel()->getStdCellLib()->createStdCell("INV", dis_inv_names[state_count]);
dis_invs[state_count]->construct();
dis_and2s[state_count] = getTechModel()->getStdCellLib()->createStdCell("AND2", dis_and2_names[state_count]);
dis_and2s[state_count]->construct();
dis_and2s[state_count + number_states] = getTechModel()->getStdCellLib()->createStdCell("AND2", dis_and2_names[state_count + number_states]);
dis_and2s[state_count + number_states]->construct();
state_count++;
}
}
vector<String> dis_or_names(number_requests, "");
vector<ElectricalModel*> dis_ors(number_requests, NULL);
for(unsigned int i = 0; i < number_requests; ++i)
{
dis_or_names[i] = "Dis_OR" + (String)i;
dis_ors[i] = (ElectricalModel*)ModelGen::createModel("OR", dis_or_names[i], getTechModel());
dis_ors[i]->setParameter("NumberInputs", number_requests-1);
dis_ors[i]->setParameter("NumberBits", 1);
dis_ors[i]->construct();
}
state_count = 0;
for(unsigned int i = 0; i < number_requests; ++i)
{
createNet("Dis_OR_Out" + (String)i);
createNet("G_INV_Out" + (String)i);
portConnect(g_invs[i], "A", "Dis_OR_Out" + (String)i);
portConnect(g_invs[i], "Y", "G_INV_Out" + (String)i);
portConnect(g_and2s[i], "A", "Request" + (String)i);
portConnect(g_and2s[i], "B", "G_INV_Out" + (String)i);
portConnect(g_and2s[i], "Y", "Grant" + (String)i);
for(unsigned int j = i + 1; j < number_requests; ++j)
{
createNet(String::format("W_INV_Out_%d_%d", i, j));
createNet(String::format("W_OR2_Out_%d_%d", i, j));
createNet(String::format("W_AND2_Out_%d_%d", i, j));
createNet(String::format("W_DFF_Out_%d_%d", i, j));
portConnect(w_invs[state_count], "A", "Grant" + (String)i);
portConnect(w_invs[state_count], "Y", String::format("W_INV_Out_%d_%d", i, j));
portConnect(w_or2s[state_count], "A", String::format("W_DFF_Out_%d_%d", i, j));
portConnect(w_or2s[state_count], "B", "Grant" + (String)j);
portConnect(w_or2s[state_count], "Y", String::format("W_OR2_Out_%d_%d", i, j));
portConnect(w_and2s[state_count], "A", String::format("W_OR2_Out_%d_%d", i, j));
portConnect(w_and2s[state_count], "B", String::format("W_INV_Out_%d_%d", i, j));
portConnect(w_and2s[state_count], "Y", String::format("W_AND2_Out_%d_%d", i, j));
portConnect(w_dffs[state_count], "D", String::format("W_AND2_Out_%d_%d", i, j));
portConnect(w_dffs[state_count], "CK", "CK");
portConnect(w_dffs[state_count], "Q", String::format("W_DFF_Out_%d_%d", i, j));
createNet(String::format("Dis_AND2_Out_%d_%d", i, j));
createNet(String::format("Dis_AND2_Out_%d_%d", j, i));
createNet(String::format("Dis_INV_Out_%d_%d", j, i));
portConnect(dis_and2s[state_count], "A", "Request" + (String)i);
portConnect(dis_and2s[state_count], "B", String::format("W_DFF_Out_%d_%d", i, j));
portConnect(dis_and2s[state_count], "Y", String::format("Dis_AND2_Out_%d_%d", i, j));
portConnect(dis_invs[state_count], "A", String::format("W_DFF_Out_%d_%d", i, j));
portConnect(dis_invs[state_count], "Y", String::format("Dis_INV_Out_%d_%d", j, i));
portConnect(dis_and2s[state_count + number_states], "A", "Request" + (String)j);
portConnect(dis_and2s[state_count + number_states], "B", String::format("Dis_INV_Out_%d_%d", j, i));
portConnect(dis_and2s[state_count + number_states], "Y", String::format("Dis_AND2_Out_%d_%d", j, i));
state_count++;
}
}
for(unsigned int i = 0; i < number_requests; ++i)
{
unsigned int k = 0;
for(unsigned int j = 0; j < number_requests; ++j)
{
if(i != j)
{
portConnect(dis_ors[i], "In" + (String)k, String::format("Dis_AND2_Out_%d_%d", j, i));
k++;
}
}
portConnect(dis_ors[i], "Out", "Dis_OR_Out" + (String)i);
}
// Add instances
for(unsigned int i = 0; i < number_requests; ++i)
{
addSubInstances(g_invs[i], 1.0);
addElectricalSubResults(g_invs[i], 1.0);
addSubInstances(g_and2s[i], 1.0);
addElectricalSubResults(g_and2s[i], 1.0);
addSubInstances(dis_ors[i], 1.0);
addElectricalSubResults(dis_ors[i], 1.0);
}
for(unsigned int i = 0; i < number_states; ++i)
{
addSubInstances(w_or2s[i], 1.0);
addElectricalSubResults(w_or2s[i], 1.0);
addSubInstances(w_and2s[i], 1.0);
addElectricalSubResults(w_and2s[i], 1.0);
addSubInstances(w_invs[i], 1.0);
addElectricalSubResults(w_invs[i], 1.0);
addSubInstances(w_dffs[i], 1.0);
addElectricalSubResults(w_dffs[i], 1.0);
addSubInstances(dis_and2s[i], 1.0);
addElectricalSubResults(dis_and2s[i], 1.0);
addSubInstances(dis_and2s[i + number_states], 1.0);
addElectricalSubResults(dis_and2s[i + number_states], 1.0);
addSubInstances(dis_invs[i], 1.0);
addElectricalSubResults(dis_invs[i], 1.0);
}
// Update event
//for(unsigned int i = 0; i <= number_requests; ++i)
//{
//Result* arb_event = getEventResult("Arbitrate" + (String)i);
Result* arb_event = getEventResult("Arbitrate");
for(unsigned int j = 0; j < number_requests; ++j)
{
arb_event->addSubResult(g_invs[j]->getEventResult("INV"), g_inv_names[j], 1.0);
arb_event->addSubResult(g_and2s[j]->getEventResult("AND2"), g_and2_names[j], 1.0);
arb_event->addSubResult(dis_ors[j]->getEventResult("OR"), dis_or_names[j], 1.0);
}
for(unsigned int j = 0; j < number_states; ++j)
{
arb_event->addSubResult(w_or2s[j]->getEventResult("OR2"), w_or2_names[j], 1.0);
arb_event->addSubResult(w_and2s[j]->getEventResult("AND2"), w_and2_names[j], 1.0);
arb_event->addSubResult(w_invs[j]->getEventResult("INV"), w_inv_names[j], 1.0);
arb_event->addSubResult(w_dffs[j]->getEventResult("DFFD"), w_dff_names[j], 1.0);
arb_event->addSubResult(w_dffs[j]->getEventResult("DFFQ"), w_dff_names[j], 1.0);
arb_event->addSubResult(w_dffs[j]->getEventResult("CK"), w_dff_names[j], 1.0);
arb_event->addSubResult(dis_and2s[j]->getEventResult("AND2"), dis_and2_names[j], 1.0);
arb_event->addSubResult(dis_and2s[j + number_states]->getEventResult("AND2"), dis_and2_names[j + number_states], 1.0);
arb_event->addSubResult(dis_invs[j]->getEventResult("INV"), dis_inv_names[j], 1.0);
}
//}
}
return;
}
void MatrixArbiter::propagateTransitionInfo()
{
// Get parameters
unsigned int number_requests = getParameter("NumberRequests").toUInt();
if(number_requests == 1)
{
propagatePortTransitionInfo("Grant0", "Request0");
}
else
{
unsigned int number_states = (number_requests - 1) * number_requests / 2;
vector<ElectricalModel*> g_and2s(number_requests, NULL);
vector<ElectricalModel*> g_invs(number_requests, NULL);
vector<ElectricalModel*> w_invs(number_states, NULL);
vector<ElectricalModel*> w_or2s(number_states, NULL);
vector<ElectricalModel*> w_and2s(number_states, NULL);
vector<ElectricalModel*> w_dffs(number_states, NULL);
vector<ElectricalModel*> dis_invs(number_states, NULL);
vector<ElectricalModel*> dis_and2s(number_requests * number_requests, NULL);
vector<ElectricalModel*> dis_ors(number_requests, NULL);
for(unsigned int i = 0; i < number_requests; ++i)
{
g_and2s[i] = (ElectricalModel*)getSubInstance("G_AND2" + (String)i);
g_invs[i] = (ElectricalModel*)getSubInstance("G_INV" + (String)i);
dis_ors[i] = (ElectricalModel*)getSubInstance("Dis_OR" + (String)i);
}
unsigned int state_count = 0;
for(unsigned int i = 0; i < number_requests; ++i)
{
for(unsigned int j = i + 1; j < number_requests; ++j)
{
w_invs[state_count] = (ElectricalModel*)getSubInstance(String::format("W_INV_%d_%d", i, j));
w_or2s[state_count] = (ElectricalModel*)getSubInstance(String::format("W_OR2_%d_%d", i, j));
w_and2s[state_count] = (ElectricalModel*)getSubInstance(String::format("W_AND2_%d_%d", i, j));
w_dffs[state_count] = (ElectricalModel*)getSubInstance(String::format("W_DFF_%d_%d", i, j));
dis_invs[state_count] = (ElectricalModel*)getSubInstance(String::format("Dis_INV_%d_%d", i, j));
dis_and2s[i * number_requests + j] = (ElectricalModel*)getSubInstance(String::format("Dis_AND2_%d_%d", i, j));
dis_and2s[j * number_requests + i] = (ElectricalModel*)getSubInstance(String::format("Dis_AND2_%d_%d", j, i));
w_dffs[state_count]->getInputPort("D")->setTransitionInfo(TransitionInfo(0.5, 0.0, 0.5));
propagatePortTransitionInfo(w_dffs[state_count], "CK", "CK");
w_dffs[state_count]->use();
state_count++;
}
}
unsigned int iteration = 1;
unsigned int max_number_iterations = 10;
//vector<TransitionInfo> trans_vector(number_states, TransitionInfo(0.0, 0.0, 1.0));
//vector<double> total_P_vector(number_states, 0.0);
while(iteration < max_number_iterations)
{
// for(unsigned int i = 0; i < number_states; ++i)
// {
// w_dffs[i]->getInputPort("D")->setTransitionInfo(trans_vector[i]);
// propagatePortTransitionInfo(w_dffs[i], "CK", "CK");
// w_dffs[i]->use();
// }
state_count = 0;
for(unsigned int i = 0; i < number_requests; ++i)
{
for(unsigned int j = i + 1; j < number_requests; ++j)
{
propagatePortTransitionInfo(dis_and2s[i * number_requests + j], "A", "Request" + (String)i);
propagatePortTransitionInfo(dis_and2s[i * number_requests + j], "B", w_dffs[state_count], "Q");
dis_and2s[i * number_requests + j]->use();
propagatePortTransitionInfo(dis_invs[state_count], "A", w_dffs[state_count], "Q");
dis_invs[state_count]->use();
propagatePortTransitionInfo(dis_and2s[j * number_requests + i], "A", "Request" + (String)j);
propagatePortTransitionInfo(dis_and2s[j * number_requests + i], "B", dis_invs[state_count], "Y");
dis_and2s[j * number_requests + i]->use();
state_count++;
}
}
for(unsigned int i = 0; i < number_requests; ++i)
{
unsigned int k = 0;
for(unsigned int j = 0; j < number_requests; ++j)
{
if(i != j)
{
propagatePortTransitionInfo(dis_ors[i], "In" + (String)k, dis_and2s[j * number_requests + i], "Y");
k++;
}
}
dis_ors[i]->use();
}
for(unsigned int i = 0; i < number_requests; ++i)
{
propagatePortTransitionInfo(g_invs[i], "A", dis_ors[i], "Out");
g_invs[i]->use();
propagatePortTransitionInfo(g_and2s[i], "A", "Request" + (String)i);
propagatePortTransitionInfo(g_and2s[i], "B", g_invs[i], "Y");
g_and2s[i]->use();
}
state_count = 0;
for(unsigned int i = 0; i < number_requests; ++i)
{
for(unsigned int j = i + 1; j < number_requests; ++j)
{
propagatePortTransitionInfo(w_invs[state_count], "A", g_and2s[i], "Y");
w_invs[state_count]->use();
propagatePortTransitionInfo(w_or2s[state_count], "A", w_dffs[state_count], "Q");
propagatePortTransitionInfo(w_or2s[state_count], "B", g_and2s[j], "Y");
w_or2s[state_count]->use();
propagatePortTransitionInfo(w_and2s[state_count], "A", w_or2s[state_count], "Y");
propagatePortTransitionInfo(w_and2s[state_count], "B", w_invs[state_count], "Y");
w_and2s[state_count]->use();
propagatePortTransitionInfo(w_dffs[state_count], "D", w_and2s[state_count], "Y");
propagatePortTransitionInfo(w_dffs[state_count], "CK", "CK");
w_dffs[state_count]->use();
state_count++;
}
}
// for(unsigned int i = 0; i < number_states; ++i)
// {
// const TransitionInfo& new_trans = w_dffs[i]->getOutputPort("Q")->getTransitionInfo();
// total_P_vector[i] += new_trans.getProbability1();
// trans_vector[i] = TransitionInfo((1.0 - total_P_vector[i] / iteration) * (1.0 - total_P_vector[i] / iteration),
// (1.0 - total_P_vector[i] / iteration) * (total_P_vector[i] / iteration),
// (total_P_vector[i] / iteration) * (total_P_vector[i] / iteration));
// }
//
// for(unsigned int i = 0; i < number_requests; ++i)
// {
// g_and2s[i]->getOutputPort("Y")->getTransitionInfo().print(cout);
// }
// cout << endl;
iteration++;
}
for(unsigned int i = 0; i < number_requests; ++i)
{
propagatePortTransitionInfo("Grant" + (String)i, g_and2s[i], "Y");
}
}
return;
}
} // namespace DSENT
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