void Power_Module::calcChannel(const FlitChannel* f){
double channelLength = f->GetLatency()* wire_length;
wire const this_wire = wireOptimize(channelLength);
double const & K = this_wire.K;
double const & N = this_wire.N;
double const & M = this_wire.M;
//area
channelArea += areaChannel(K,N,M);
//activity factor;
const vector<int> temp = f->GetActivity();
vector<double> a(classes);
for(int i = 0; i< classes; i++){
a[i] = ((double)temp[i])/totalTime;
}
//power calculation
double const bitPower = powerRepeatedWire(channelLength, K,M,N);
channelClkPower += powerWireClk(M,channel_width);
for(int i = 0; i< classes; i++){
channelWirePower += bitPower * a[i]*channel_width;
channelDFFPower += powerWireDFF(M, channel_width, a[i]);
}
channelLeakPower+= powerRepeatedWireLeak(K,M,N)*channel_width;
}
void Power_Module::calcChannel(FlitChannel* f){
double channelLength = f->GetLatency()* wire_length;
wire * this_wire = wireOptimize(channelLength);
double K = this_wire->K;
double N = this_wire->N;
double M = this_wire->M;
//area
channelArea += areaChannel(K,N,M);
//activity factor;
int* temp = f->GetActivity();
double* a = (double*)malloc(sizeof(double)* Flit::NUM_FLIT_TYPES);
for(int i = 0; i< Flit::NUM_FLIT_TYPES; i++){
a[i] = ((double)temp[i])/totalTime;
}
//power calculation
double bitPower = powerRepeatedWire(channelLength, K,M,N);
channelClkPower += powerWireClk(M,channel_width);
for(int i = 0; i< Flit::NUM_FLIT_TYPES; i++){
channelWirePower += bitPower * a[i]*channel_width;
channelDFFPower += powerWireDFF(M, channel_width, a[i]);
}
channelLeakPower+= powerRepeatedWireLeak(K,M,N)*channel_width;
}
wire const & Power_Module::wireOptimize(double L)
{
map<double, wire>::iterator iter = wire_map.find(L);
if(iter == wire_map.end())
{
double W = 64;
double bestMetric = 100000000 ;
double bestK = -1;
double bestM = -1;
double bestN = -1;
for (double K = 1.0 ; K < 10 ; K+=0.1 )
{
for (double N = 1.0 ; N < 40 ; N += 1.0 )
{
for (double M = 1.0 ; M < 40.0 ; M +=1.0 )
{
double l = 1.0 * L/( N * M) ;
double k0 = R * (Co_delay + Ci_delay) ;
double k1 = R/K * Cw + K * Rw * Ci_delay ;
double k2 = 0.5 * Rw * Cw ;
double Tw = k0 + (k1 * l) + k2 * (l * l) ;
double alpha = 0.2 ;
double power = alpha * W * powerRepeatedWire( L, K, M, N) + powerWireDFF( M, W, alpha ) ;
double metric = M * M * M * M * power ;
if ( (N*Tw) < (0.8 * tCLK) )
{
if ( metric < bestMetric )
{
bestMetric = metric ;
bestK = K ;
bestM = M ;
bestN = N ;
}
}
}
}
}
cout<<"L = "<<L<<" K = "<<bestK<<" M = "<<bestM<<" N = "<<bestN<<endl;
wire const temp = {L, bestK, bestM, bestN};
iter = wire_map.insert(make_pair(L, temp)).first;
}
return iter->second;
}
wire* Power_Module::wireOptimize(double L){
double W,K,M,N,bestMetric;
if(wire_map.find(L)!=wire_map.end()){
return wire_map.find(L)->second;
}
W = 64;
bestMetric = 100000000 ;
double bestK = -1;
double bestM = -1;
double bestN = -1;
for ( K = 1.0 ; K < 10 ; K+=0.1 ) {
for (N = 1.0 ; N < 40 ; N += 1.0 ) {
for (M = 1.0 ; M < 40.0 ; M +=1.0 ) {
double l = 1.0 * L/( N * M) ;
double k0 = R * (Co_delay + Ci_delay) ;
double k1 = R/K * Cw + K * Rw * Ci_delay ;
double k2 = 0.5 * Rw * Cw ;
double Tw = k0 + (k1 * l) + k2 * (l * l) ;
double alpha = 0.2 ;
double power = alpha * W * powerRepeatedWire( L, K, M, N) + powerWireDFF( M, W, alpha ) ;
double metric = M * M * M * M * power ;
if ( (N*Tw) < (0.8 * tCLK) ) {
if ( metric < bestMetric ) {
bestMetric = metric ;
bestK = K ;
bestM = M ;
bestN = N ;
}
}
}
}
}
cout<<"L = "<<L<<" K = "<<bestK<<" M = "<<bestM<<" N = "<<bestN<<endl;
wire * temp = new wire;
temp->L = L;
temp->K = bestK;
temp->M = bestM;
temp->N = bestN;
wire_map[L] = temp;
return temp;
}
