/* steady state temperature */
void steady_state_temp(RC_model_t *model, double *power, double *temp)
{
if (model->type == BLOCK_MODEL)
steady_state_temp_block(model->block, power, temp);
else if (model->type == GRID_MODEL)
steady_state_temp_grid(model->grid, power, temp);
else fatal("unknown model type\n");
}
/* steady state temperature */
void steady_state_temp(RC_model_t *model, double *power, double *temp)
{
// if (model->type == BLOCK_MODEL)
// steady_state_temp_block(model->block, power, temp);
// else if (model->type == GRID_MODEL)
// steady_state_temp_grid(model->grid, power, temp);
// else fatal("unknown model type\n");
int leak_convg_true = 0;
int leak_iter = 0;
int n, base=0;
//int idx=0;
double blk_height, blk_width;
int i, j, k;
double *d_temp = NULL;
double *temp_old = NULL;
double *power_new = NULL;
double d_max=0.0;
if (model->type == BLOCK_MODEL) {
n = model->block->flp->n_units;
printf("n is here : %d\n\n",n);
if (model->config->leakage_used) { // if considering leakage-temperature loop
d_temp = hotspot_vector(model);
temp_old = hotspot_vector(model);
power_new = hotspot_vector(model);
for (leak_iter=0;(!leak_convg_true)&&(leak_iter<=LEAKAGE_MAX_ITER);leak_iter++){
for(i=0; i < n; i++) {
blk_height = model->block->flp->units[i].height;
blk_width = model->block->flp->units[i].width;
power_new[i] = power[i] + calc_leakage(model->config->leakage_mode,blk_height,blk_width,temp[i]);
temp_old[i] = temp[i]; //copy temp before update
}
steady_state_temp_block(model->block, power_new, temp); // update temperature
d_max = 0.0;
for(i=0; i < n; i++) {
d_temp[i] = temp[i] - temp_old[i]; //temperature increase due to leakage
if (d_temp[i]>d_max) {
d_max = d_temp[i];
}
}
if (d_max < LEAK_TOL) {// check convergence
leak_convg_true = 1;
}
if (d_max > TEMP_HIGH && leak_iter > 1) {// check to make sure d_max is not "nan" (esp. in natural convection)
fatal("temperature is too high, possible thermal runaway. Double-check power inputs and package settings.\n");
}
}
free(d_temp);
free(temp_old);
free(power_new);
/* if no convergence after max number of iterations, thermal runaway */
if (!leak_convg_true)
fatal("too many iterations before temperature-leakage convergence -- possible thermal runaway\n");
} else // if leakage-temperature loop is not considered
steady_state_temp_block(model->block, power, temp);
}
else if (model->type == GRID_MODEL) {
if (model->config->leakage_used) { // if considering leakage-temperature loop
d_temp = hotspot_vector(model);
temp_old = hotspot_vector(model);
power_new = hotspot_vector(model);
for (leak_iter=0;(!leak_convg_true)&&(leak_iter<=LEAKAGE_MAX_ITER);leak_iter++){
for(k=0, base=0; k < model->grid->n_layers; k++) {
if(model->grid->layers[k].has_power)
for(j=0; j < model->grid->layers[k].flp->n_units; j++) {
blk_height = model->grid->layers[k].flp->units[j].height;
blk_width = model->grid->layers[k].flp->units[j].width;
power_new[base+j] = power[base+j] + calc_leakage(model->config->leakage_mode,blk_height,blk_width,temp[base+j]);
temp_old[base+j] = temp[base+j]; //copy temp before update
}
base += model->grid->layers[k].flp->n_units;
}
steady_state_temp_grid(model->grid, power_new, temp);
d_max = 0.0;
for(k=0, base=0; k < model->grid->n_layers; k++) {
if(model->grid->layers[k].has_power)
for(j=0; j < model->grid->layers[k].flp->n_units; j++) {
d_temp[base+j] = temp[base+j] - temp_old[base+j]; //temperature increase due to leakage
if (d_temp[base+j]>d_max)
d_max = d_temp[base+j];
}
base += model->grid->layers[k].flp->n_units;
}
if (d_max < LEAK_TOL) {// check convergence
leak_convg_true = 1;
}
if (d_max > TEMP_HIGH && leak_iter > 0) {// check to make sure d_max is not "nan" (esp. in natural convection)
fatal("temperature is too high, possible thermal runaway. Double-check power inputs and package settings.\n");
}
}
free(d_temp);
free(temp_old);
free(power_new);
/* if no convergence after max number of iterations, thermal runaway */
if (!leak_convg_true)
fatal("too many iterations before temperature-leakage convergence -- possible thermal runaway\n");
} else // if leakage-temperature loop is not considered
steady_state_temp_grid(model->grid, power, temp);
}
else fatal("unknown model type\n");
}
