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Diffstat (limited to 'ext/mcpat/cacti/Ucache.cc')
| -rw-r--r-- | ext/mcpat/cacti/Ucache.cc | 916 |
1 files changed, 916 insertions, 0 deletions
diff --git a/ext/mcpat/cacti/Ucache.cc b/ext/mcpat/cacti/Ucache.cc new file mode 100644 index 000000000..f3e1227df --- /dev/null +++ b/ext/mcpat/cacti/Ucache.cc @@ -0,0 +1,916 @@ +/***************************************************************************** + * McPAT/CACTI + * SOFTWARE LICENSE AGREEMENT + * Copyright 2012 Hewlett-Packard Development Company, L.P. + * 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.” + * + ***************************************************************************/ + + +#include <pthread.h> + +#include <algorithm> +#include <cmath> +#include <ctime> +#include <iostream> +#include <list> + +#include "Ucache.h" +#include "area.h" +#include "bank.h" +#include "basic_circuit.h" +#include "component.h" +#include "const.h" +#include "decoder.h" +#include "parameter.h" +#include "subarray.h" +#include "uca.h" + +using namespace std; + +const uint32_t nthreads = NTHREADS; + + +void min_values_t::update_min_values(const min_values_t * val) +{ + min_delay = (min_delay > val->min_delay) ? val->min_delay : min_delay; + min_dyn = (min_dyn > val->min_dyn) ? val->min_dyn : min_dyn; + min_leakage = (min_leakage > val->min_leakage) ? val->min_leakage : min_leakage; + min_area = (min_area > val->min_area) ? val->min_area : min_area; + min_cyc = (min_cyc > val->min_cyc) ? val->min_cyc : min_cyc; +} + + + +void min_values_t::update_min_values(const uca_org_t & res) +{ + min_delay = (min_delay > res.access_time) ? res.access_time : min_delay; + min_dyn = (min_dyn > res.power.readOp.dynamic) ? res.power.readOp.dynamic : min_dyn; + min_leakage = (min_leakage > res.power.readOp.leakage) ? res.power.readOp.leakage : min_leakage; + min_area = (min_area > res.area) ? res.area : min_area; + min_cyc = (min_cyc > res.cycle_time) ? res.cycle_time : min_cyc; +} + +void min_values_t::update_min_values(const nuca_org_t * res) +{ + min_delay = (min_delay > res->nuca_pda.delay) ? res->nuca_pda.delay : min_delay; + min_dyn = (min_dyn > res->nuca_pda.power.readOp.dynamic) ? res->nuca_pda.power.readOp.dynamic : min_dyn; + min_leakage = (min_leakage > res->nuca_pda.power.readOp.leakage) ? res->nuca_pda.power.readOp.leakage : min_leakage; + min_area = (min_area > res->nuca_pda.area.get_area()) ? res->nuca_pda.area.get_area() : min_area; + min_cyc = (min_cyc > res->nuca_pda.cycle_time) ? res->nuca_pda.cycle_time : min_cyc; +} + +void min_values_t::update_min_values(const mem_array * res) +{ + min_delay = (min_delay > res->access_time) ? res->access_time : min_delay; + min_dyn = (min_dyn > res->power.readOp.dynamic) ? res->power.readOp.dynamic : min_dyn; + min_leakage = (min_leakage > res->power.readOp.leakage) ? res->power.readOp.leakage : min_leakage; + min_area = (min_area > res->area) ? res->area : min_area; + min_cyc = (min_cyc > res->cycle_time) ? res->cycle_time : min_cyc; +} + + + +void * calc_time_mt_wrapper(void * void_obj) +{ + calc_time_mt_wrapper_struct * calc_obj = (calc_time_mt_wrapper_struct *) void_obj; + uint32_t tid = calc_obj->tid; + list<mem_array *> & data_arr = calc_obj->data_arr; + list<mem_array *> & tag_arr = calc_obj->tag_arr; + bool is_tag = calc_obj->is_tag; + bool pure_ram = calc_obj->pure_ram; + bool pure_cam = calc_obj->pure_cam; + bool is_main_mem = calc_obj->is_main_mem; + double Nspd_min = calc_obj->Nspd_min; + min_values_t * data_res = calc_obj->data_res; + min_values_t * tag_res = calc_obj->tag_res; + + data_arr.clear(); + data_arr.push_back(new mem_array); + tag_arr.clear(); + tag_arr.push_back(new mem_array); + + uint32_t Ndwl_niter = _log2(MAXDATAN) + 1; + uint32_t Ndbl_niter = _log2(MAXDATAN) + 1; + uint32_t Ndcm_niter = _log2(MAX_COL_MUX) + 1; + uint32_t niter = Ndwl_niter * Ndbl_niter * Ndcm_niter; + + + bool is_valid_partition; + int wt_min, wt_max; + + if (g_ip->force_wiretype) { + if (g_ip->wt == 0) { + wt_min = Low_swing; + wt_max = Low_swing; + } + else { + wt_min = Global; + wt_max = Low_swing-1; + } + } + else { + wt_min = Global; + wt_max = Low_swing; + } + + for (double Nspd = Nspd_min; Nspd <= MAXDATASPD; Nspd *= 2) + { + for (int wr = wt_min; wr <= wt_max; wr++) + { + for (uint32_t iter = tid; iter < niter; iter += nthreads) + { + // reconstruct Ndwl, Ndbl, Ndcm + unsigned int Ndwl = 1 << (iter / (Ndbl_niter * Ndcm_niter)); + unsigned int Ndbl = 1 << ((iter / (Ndcm_niter))%Ndbl_niter); + unsigned int Ndcm = 1 << (iter % Ndcm_niter); + for(unsigned int Ndsam_lev_1 = 1; Ndsam_lev_1 <= MAX_COL_MUX; Ndsam_lev_1 *= 2) + { + for(unsigned int Ndsam_lev_2 = 1; Ndsam_lev_2 <= MAX_COL_MUX; Ndsam_lev_2 *= 2) + { + //for debuging + if (g_ip->force_cache_config && is_tag == false) + { + wr = g_ip->wt; + Ndwl = g_ip->ndwl; + Ndbl = g_ip->ndbl; + Ndcm = g_ip->ndcm; + if(g_ip->nspd != 0) { + Nspd = g_ip->nspd; + } + if(g_ip->ndsam1 != 0) { + Ndsam_lev_1 = g_ip->ndsam1; + Ndsam_lev_2 = g_ip->ndsam2; + } + } + + if (is_tag == true) + { + is_valid_partition = calculate_time(is_tag, pure_ram, pure_cam, Nspd, Ndwl, + Ndbl, Ndcm, Ndsam_lev_1, Ndsam_lev_2, + tag_arr.back(), 0, NULL, NULL, + is_main_mem); + } + // If it's a fully-associative cache, the data array partition parameters are identical to that of + // the tag array, so compute data array partition properties also here. + if (is_tag == false || g_ip->fully_assoc) + { + is_valid_partition = calculate_time(is_tag/*false*/, pure_ram, pure_cam, Nspd, Ndwl, + Ndbl, Ndcm, Ndsam_lev_1, Ndsam_lev_2, + data_arr.back(), 0, NULL, NULL, + is_main_mem); + } + + if (is_valid_partition) + { + if (is_tag == true) + { + tag_arr.back()->wt = (enum Wire_type) wr; + tag_res->update_min_values(tag_arr.back()); + tag_arr.push_back(new mem_array); + } + if (is_tag == false || g_ip->fully_assoc) + { + data_arr.back()->wt = (enum Wire_type) wr; + data_res->update_min_values(data_arr.back()); + data_arr.push_back(new mem_array); + } + } + + if (g_ip->force_cache_config && is_tag == false) + { + wr = wt_max; + iter = niter; + if(g_ip->nspd != 0) { + Nspd = MAXDATASPD; + } + if (g_ip->ndsam1 != 0) { + Ndsam_lev_1 = MAX_COL_MUX+1; + Ndsam_lev_2 = MAX_COL_MUX+1; + } + } + } + } + } + } + } + + delete data_arr.back(); + delete tag_arr.back(); + data_arr.pop_back(); + tag_arr.pop_back(); + + pthread_exit(NULL); +} + + + +bool calculate_time( + bool is_tag, + int pure_ram, + bool pure_cam, + double Nspd, + unsigned int Ndwl, + unsigned int Ndbl, + unsigned int Ndcm, + unsigned int Ndsam_lev_1, + unsigned int Ndsam_lev_2, + mem_array *ptr_array, + int flag_results_populate, + results_mem_array *ptr_results, + uca_org_t *ptr_fin_res, + bool is_main_mem) +{ + DynamicParameter dyn_p(is_tag, pure_ram, pure_cam, Nspd, Ndwl, Ndbl, Ndcm, Ndsam_lev_1, Ndsam_lev_2, is_main_mem); + + if (dyn_p.is_valid == false) + { + return false; + } + + UCA * uca = new UCA(dyn_p); + + + if (flag_results_populate) + { //For the final solution, populate the ptr_results data structure -- TODO: copy only necessary variables + } + else + { + int num_act_mats_hor_dir = uca->bank.dp.num_act_mats_hor_dir; + int num_mats = uca->bank.dp.num_mats; + bool is_fa = uca->bank.dp.fully_assoc; + bool pure_cam = uca->bank.dp.pure_cam; + ptr_array->Ndwl = Ndwl; + ptr_array->Ndbl = Ndbl; + ptr_array->Nspd = Nspd; + ptr_array->deg_bl_muxing = dyn_p.deg_bl_muxing; + ptr_array->Ndsam_lev_1 = Ndsam_lev_1; + ptr_array->Ndsam_lev_2 = Ndsam_lev_2; + ptr_array->access_time = uca->access_time; + ptr_array->cycle_time = uca->cycle_time; + ptr_array->multisubbank_interleave_cycle_time = uca->multisubbank_interleave_cycle_time; + ptr_array->area_ram_cells = uca->area_all_dataramcells; + ptr_array->area = uca->area.get_area(); + ptr_array->height = uca->area.h; + ptr_array->width = uca->area.w; + ptr_array->mat_height = uca->bank.mat.area.h; + ptr_array->mat_length = uca->bank.mat.area.w; + ptr_array->subarray_height = uca->bank.mat.subarray.area.h; + ptr_array->subarray_length = uca->bank.mat.subarray.area.w; + ptr_array->power = uca->power; + ptr_array->delay_senseamp_mux_decoder = + MAX(uca->delay_array_to_sa_mux_lev_1_decoder, + uca->delay_array_to_sa_mux_lev_2_decoder); + ptr_array->delay_before_subarray_output_driver = uca->delay_before_subarray_output_driver; + ptr_array->delay_from_subarray_output_driver_to_output = uca->delay_from_subarray_out_drv_to_out; + + ptr_array->delay_route_to_bank = uca->htree_in_add->delay; + ptr_array->delay_input_htree = uca->bank.htree_in_add->delay; + ptr_array->delay_row_predecode_driver_and_block = uca->bank.mat.r_predec->delay; + ptr_array->delay_row_decoder = uca->bank.mat.row_dec->delay; + ptr_array->delay_bitlines = uca->bank.mat.delay_bitline; + ptr_array->delay_matchlines = uca->bank.mat.delay_matchchline; + ptr_array->delay_sense_amp = uca->bank.mat.delay_sa; + ptr_array->delay_subarray_output_driver = uca->bank.mat.delay_subarray_out_drv_htree; + ptr_array->delay_dout_htree = uca->bank.htree_out_data->delay; + ptr_array->delay_comparator = uca->bank.mat.delay_comparator; + + ptr_array->all_banks_height = uca->area.h; + ptr_array->all_banks_width = uca->area.w; + ptr_array->area_efficiency = uca->area_all_dataramcells * 100 / (uca->area.get_area()); + + ptr_array->power_routing_to_bank = uca->power_routing_to_bank; + ptr_array->power_addr_input_htree = uca->bank.htree_in_add->power; + ptr_array->power_data_input_htree = uca->bank.htree_in_data->power; +// cout<<"power_data_input_htree"<<uca->bank.htree_in_data->power.readOp.leakage<<endl; + ptr_array->power_data_output_htree = uca->bank.htree_out_data->power; +// cout<<"power_data_output_htree"<<uca->bank.htree_out_data->power.readOp.leakage<<endl; + ptr_array->power_row_predecoder_drivers = uca->bank.mat.r_predec->driver_power; + ptr_array->power_row_predecoder_drivers.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_row_predecoder_drivers.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_row_predecoder_drivers.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_row_predecoder_blocks = uca->bank.mat.r_predec->block_power; + ptr_array->power_row_predecoder_blocks.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_row_predecoder_blocks.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_row_predecoder_blocks.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_row_decoders = uca->bank.mat.power_row_decoders; + ptr_array->power_row_decoders.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_row_decoders.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_row_decoders.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_bit_mux_predecoder_drivers = uca->bank.mat.b_mux_predec->driver_power; + ptr_array->power_bit_mux_predecoder_drivers.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bit_mux_predecoder_drivers.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bit_mux_predecoder_drivers.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_bit_mux_predecoder_blocks = uca->bank.mat.b_mux_predec->block_power; + ptr_array->power_bit_mux_predecoder_blocks.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bit_mux_predecoder_blocks.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bit_mux_predecoder_blocks.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_bit_mux_decoders = uca->bank.mat.power_bit_mux_decoders; + ptr_array->power_bit_mux_decoders.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bit_mux_decoders.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bit_mux_decoders.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_senseamp_mux_lev_1_predecoder_drivers = uca->bank.mat.sa_mux_lev_1_predec->driver_power; + ptr_array->power_senseamp_mux_lev_1_predecoder_drivers .readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_1_predecoder_drivers .writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_1_predecoder_drivers .searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_senseamp_mux_lev_1_predecoder_blocks = uca->bank.mat.sa_mux_lev_1_predec->block_power; + ptr_array->power_senseamp_mux_lev_1_predecoder_blocks.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_1_predecoder_blocks.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_1_predecoder_blocks.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_senseamp_mux_lev_1_decoders = uca->bank.mat.power_sa_mux_lev_1_decoders; + ptr_array->power_senseamp_mux_lev_1_decoders.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_1_decoders.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_1_decoders.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_senseamp_mux_lev_2_predecoder_drivers = uca->bank.mat.sa_mux_lev_2_predec->driver_power; + ptr_array->power_senseamp_mux_lev_2_predecoder_drivers.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_2_predecoder_drivers.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_2_predecoder_drivers.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_senseamp_mux_lev_2_predecoder_blocks = uca->bank.mat.sa_mux_lev_2_predec->block_power; + ptr_array->power_senseamp_mux_lev_2_predecoder_blocks.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_2_predecoder_blocks.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_2_predecoder_blocks.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_senseamp_mux_lev_2_decoders = uca->bank.mat.power_sa_mux_lev_2_decoders; + ptr_array->power_senseamp_mux_lev_2_decoders .readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_2_decoders .writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_senseamp_mux_lev_2_decoders .searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_bitlines = uca->bank.mat.power_bitline; + ptr_array->power_bitlines.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bitlines.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_bitlines.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_sense_amps = uca->bank.mat.power_sa; + ptr_array->power_sense_amps.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_sense_amps.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_sense_amps.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_prechg_eq_drivers = uca->bank.mat.power_bl_precharge_eq_drv; + ptr_array->power_prechg_eq_drivers.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_prechg_eq_drivers.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_prechg_eq_drivers.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_output_drivers_at_subarray = uca->bank.mat.power_subarray_out_drv; + ptr_array->power_output_drivers_at_subarray.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_output_drivers_at_subarray.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_output_drivers_at_subarray.searchOp.dynamic *= num_act_mats_hor_dir; + + ptr_array->power_comparators = uca->bank.mat.power_comparator; + ptr_array->power_comparators.readOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_comparators.writeOp.dynamic *= num_act_mats_hor_dir; + ptr_array->power_comparators.searchOp.dynamic *= num_act_mats_hor_dir; + +// cout << " num of mats: " << dyn_p.num_mats << endl; + if (is_fa || pure_cam) + { + ptr_array->power_htree_in_search = uca->bank.htree_in_search->power; +// cout<<"power_htree_in_search"<<uca->bank.htree_in_search->power.readOp.leakage<<endl; + ptr_array->power_htree_out_search = uca->bank.htree_out_search->power; +// cout<<"power_htree_out_search"<<uca->bank.htree_out_search->power.readOp.leakage<<endl; + ptr_array->power_searchline = uca->bank.mat.power_searchline; +// cout<<"power_searchlineh"<<uca->bank.mat.power_searchline.readOp.leakage<<endl; + ptr_array->power_searchline.searchOp.dynamic *= num_mats; + ptr_array->power_searchline_precharge = uca->bank.mat.power_searchline_precharge; + ptr_array->power_searchline_precharge.searchOp.dynamic *= num_mats; + ptr_array->power_matchlines = uca->bank.mat.power_matchline; + ptr_array->power_matchlines.searchOp.dynamic *= num_mats; + ptr_array->power_matchline_precharge = uca->bank.mat.power_matchline_precharge; + ptr_array->power_matchline_precharge.searchOp.dynamic *= num_mats; + ptr_array->power_matchline_to_wordline_drv = uca->bank.mat.power_ml_to_ram_wl_drv; +// cout<<"power_matchline.searchOp.leakage"<<uca->bank.mat.power_matchline.searchOp.leakage<<endl; + } + + ptr_array->activate_energy = uca->activate_energy; + ptr_array->read_energy = uca->read_energy; + ptr_array->write_energy = uca->write_energy; + ptr_array->precharge_energy = uca->precharge_energy; + ptr_array->refresh_power = uca->refresh_power; + ptr_array->leak_power_subbank_closed_page = uca->leak_power_subbank_closed_page; + ptr_array->leak_power_subbank_open_page = uca->leak_power_subbank_open_page; + ptr_array->leak_power_request_and_reply_networks = uca->leak_power_request_and_reply_networks; + + ptr_array->precharge_delay = uca->precharge_delay; + + +// cout<<"power_matchline.searchOp.leakage"<<uca->bank.mat.<<endl; +// +// if (!(is_fa || pure_cam)) +// { +// cout << " num of cols: " << dyn_p.num_c_subarray << endl; +// } +// else if (is_fa) +// { +// cout << " num of cols: " << dyn_p.tag_num_c_subarray+ dyn_p.data_num_c_subarray<< endl; +// } else +// cout << " num of cols: " << dyn_p.tag_num_c_subarray<< endl; +// cout << uca->bank.mat.subarray.get_total_cell_area()<<endl; + } + + + delete uca; + return true; +} + + + +bool check_uca_org(uca_org_t & u, min_values_t *minval) +{ + if (((u.access_time - minval->min_delay)*100/minval->min_delay) > g_ip->delay_dev) { + return false; + } + if (((u.power.readOp.dynamic - minval->min_dyn)/minval->min_dyn)*100 > + g_ip->dynamic_power_dev) { + return false; + } + if (((u.power.readOp.leakage - minval->min_leakage)/minval->min_leakage)*100 > + g_ip->leakage_power_dev) { + return false; + } + if (((u.cycle_time - minval->min_cyc)/minval->min_cyc)*100 > + g_ip->cycle_time_dev) { + return false; + } + if (((u.area - minval->min_area)/minval->min_area)*100 > + g_ip->area_dev) { + return false; + } + return true; +} + +bool check_mem_org(mem_array & u, const min_values_t *minval) +{ + if (((u.access_time - minval->min_delay)*100/minval->min_delay) > g_ip->delay_dev) { + return false; + } + if (((u.power.readOp.dynamic - minval->min_dyn)/minval->min_dyn)*100 > + g_ip->dynamic_power_dev) { + return false; + } + if (((u.power.readOp.leakage - minval->min_leakage)/minval->min_leakage)*100 > + g_ip->leakage_power_dev) { + return false; + } + if (((u.cycle_time - minval->min_cyc)/minval->min_cyc)*100 > + g_ip->cycle_time_dev) { + return false; + } + if (((u.area - minval->min_area)/minval->min_area)*100 > + g_ip->area_dev) { + return false; + } + return true; +} + + + + +void find_optimal_uca(uca_org_t *res, min_values_t * minval, list<uca_org_t> & ulist) +{ + double cost = 0; + double min_cost = BIGNUM; + float d, a, dp, lp, c; + + dp = g_ip->dynamic_power_wt; + lp = g_ip->leakage_power_wt; + a = g_ip->area_wt; + d = g_ip->delay_wt; + c = g_ip->cycle_time_wt; + + if (ulist.empty() == true) + { + cout << "ERROR: no valid cache organizations found" << endl; + exit(0); + } + + for (list<uca_org_t>::iterator niter = ulist.begin(); niter != ulist.end(); niter++) + { + if (g_ip->ed == 1) + { + cost = ((niter)->access_time/minval->min_delay) * ((niter)->power.readOp.dynamic/minval->min_dyn); + if (min_cost > cost) + { + min_cost = cost; + *res = (*(niter)); + } + } + else if (g_ip->ed == 2) + { + cost = ((niter)->access_time/minval->min_delay)* + ((niter)->access_time/minval->min_delay)* + ((niter)->power.readOp.dynamic/minval->min_dyn); + if (min_cost > cost) + { + min_cost = cost; + *res = (*(niter)); + } + } + else + { + /* + * check whether the current organization + * meets the input deviation constraints + */ + bool v = check_uca_org(*niter, minval); + //if (minval->min_leakage == 0) minval->min_leakage = 0.1; //FIXME remove this after leakage modeling + + if (v) + { + cost = (d * ((niter)->access_time/minval->min_delay) + + c * ((niter)->cycle_time/minval->min_cyc) + + dp * ((niter)->power.readOp.dynamic/minval->min_dyn) + + lp * ((niter)->power.readOp.leakage/minval->min_leakage) + + a * ((niter)->area/minval->min_area)); + //fprintf(stderr, "cost = %g\n", cost); + + if (min_cost > cost) { + min_cost = cost; + *res = (*(niter)); + niter = ulist.erase(niter); + if (niter!=ulist.begin()) + niter--; + } + } + else { + niter = ulist.erase(niter); + if (niter!=ulist.begin()) + niter--; + } + } + } + + if (min_cost == BIGNUM) + { + cout << "ERROR: no cache organizations met optimization criteria" << endl; + exit(0); + } +} + + + +void filter_tag_arr(const min_values_t * min, list<mem_array *> & list) +{ + double cost = BIGNUM; + double cur_cost; + double wt_delay = g_ip->delay_wt, wt_dyn = g_ip->dynamic_power_wt, wt_leakage = g_ip->leakage_power_wt, wt_cyc = g_ip->cycle_time_wt, wt_area = g_ip->area_wt; + mem_array * res = NULL; + + if (list.empty() == true) + { + cout << "ERROR: no valid tag organizations found" << endl; + exit(1); + } + + + while (list.empty() != true) + { + bool v = check_mem_org(*list.back(), min); + if (v) + { + cur_cost = wt_delay * (list.back()->access_time/min->min_delay) + + wt_dyn * (list.back()->power.readOp.dynamic/min->min_dyn) + + wt_leakage * (list.back()->power.readOp.leakage/min->min_leakage) + + wt_area * (list.back()->area/min->min_area) + + wt_cyc * (list.back()->cycle_time/min->min_cyc); + } + else + { + cur_cost = BIGNUM; + } + if (cur_cost < cost) + { + if (res != NULL) + { + delete res; + } + cost = cur_cost; + res = list.back(); + } + else + { + delete list.back(); + } + list.pop_back(); + } + if(!res) + { + cout << "ERROR: no valid tag organizations found" << endl; + exit(0); + } + + list.push_back(res); +} + + + +void filter_data_arr(list<mem_array *> & curr_list) +{ + if (curr_list.empty() == true) + { + cout << "ERROR: no valid data array organizations found" << endl; + exit(1); + } + + list<mem_array *>::iterator iter; + + for (iter = curr_list.begin(); iter != curr_list.end(); ++iter) + { + mem_array * m = *iter; + + if (m == NULL) exit(1); + + if(((m->access_time - m->arr_min->min_delay)/m->arr_min->min_delay > 0.5) && + ((m->power.readOp.dynamic - m->arr_min->min_dyn)/m->arr_min->min_dyn > 0.5)) + { + delete m; + iter = curr_list.erase(iter); + iter --; + } + } +} + + + +/* + * Performs exhaustive search across different sub-array sizes, + * wire types and aspect ratios to find an optimal UCA organization + * 1. First different valid tag array organizations are calculated + * and stored in tag_arr array + * 2. The exhaustive search is repeated to find valid data array + * organizations and stored in data_arr array + * 3. Cache area, delay, power, and cycle time for different + * cache organizations are calculated based on the + * above results + * 4. Cache model with least cost is picked from sol_list + */ +void solve(uca_org_t *fin_res) +{ + bool is_dram = false; + int pure_ram = g_ip->pure_ram; + bool pure_cam = g_ip->pure_cam; + + init_tech_params(g_ip->F_sz_um, false); + + + list<mem_array *> tag_arr (0); + list<mem_array *> data_arr(0); + list<mem_array *>::iterator miter; + list<uca_org_t> sol_list(1, uca_org_t()); + + fin_res->tag_array.access_time = 0; + fin_res->tag_array.Ndwl = 0; + fin_res->tag_array.Ndbl = 0; + fin_res->tag_array.Nspd = 0; + fin_res->tag_array.deg_bl_muxing = 0; + fin_res->tag_array.Ndsam_lev_1 = 0; + fin_res->tag_array.Ndsam_lev_2 = 0; + + + // distribute calculate_time() execution to multiple threads + calc_time_mt_wrapper_struct * calc_array = new calc_time_mt_wrapper_struct[nthreads]; + pthread_t threads[nthreads]; + + for (uint32_t t = 0; t < nthreads; t++) + { + calc_array[t].tid = t; + calc_array[t].pure_ram = pure_ram; + calc_array[t].pure_cam = pure_cam; + calc_array[t].data_res = new min_values_t(); + calc_array[t].tag_res = new min_values_t(); + } + + bool is_tag; + uint32_t ram_cell_tech_type; + + // If it's a cache, first calculate the area, delay and power for all tag array partitions. + if (!(pure_ram||pure_cam||g_ip->fully_assoc)) + { //cache + is_tag = true; + ram_cell_tech_type = g_ip->tag_arr_ram_cell_tech_type; + is_dram = ((ram_cell_tech_type == lp_dram) || (ram_cell_tech_type == comm_dram)); + init_tech_params(g_ip->F_sz_um, is_tag); + + for (uint32_t t = 0; t < nthreads; t++) + { + calc_array[t].is_tag = is_tag; + calc_array[t].is_main_mem = false; + calc_array[t].Nspd_min = 0.125; + pthread_create(&threads[t], NULL, calc_time_mt_wrapper, (void *)(&(calc_array[t]))); + } + + for (uint32_t t = 0; t < nthreads; t++) + { + pthread_join(threads[t], NULL); + } + + for (uint32_t t = 0; t < nthreads; t++) + { + calc_array[t].data_arr.sort(mem_array::lt); + data_arr.merge(calc_array[t].data_arr, mem_array::lt); + calc_array[t].tag_arr.sort(mem_array::lt); + tag_arr.merge(calc_array[t].tag_arr, mem_array::lt); + } + } + + + // calculate the area, delay and power for all data array partitions (for cache or plain RAM). +// if (!g_ip->fully_assoc) +// {//in the new cacti, cam, fully_associative cache are processed as single array in the data portion + is_tag = false; + ram_cell_tech_type = g_ip->data_arr_ram_cell_tech_type; + is_dram = ((ram_cell_tech_type == lp_dram) || (ram_cell_tech_type == comm_dram)); + init_tech_params(g_ip->F_sz_um, is_tag); + + for (uint32_t t = 0; t < nthreads; t++) + { + calc_array[t].is_tag = is_tag; + calc_array[t].is_main_mem = g_ip->is_main_mem; + if (!(pure_cam||g_ip->fully_assoc)) + { + calc_array[t].Nspd_min = (double)(g_ip->out_w)/(double)(g_ip->block_sz*8); + } + else + { + calc_array[t].Nspd_min = 1; + } + + pthread_create(&threads[t], NULL, calc_time_mt_wrapper, (void *)(&(calc_array[t]))); + } + + for (uint32_t t = 0; t < nthreads; t++) + { + pthread_join(threads[t], NULL); + } + + data_arr.clear(); + for (uint32_t t = 0; t < nthreads; t++) + { + calc_array[t].data_arr.sort(mem_array::lt); + data_arr.merge(calc_array[t].data_arr, mem_array::lt); + } +// } + + + min_values_t * d_min = new min_values_t(); + min_values_t * t_min = new min_values_t(); + min_values_t * cache_min = new min_values_t(); + + for (uint32_t t = 0; t < nthreads; t++) + { + d_min->update_min_values(calc_array[t].data_res); + t_min->update_min_values(calc_array[t].tag_res); + } + + for (miter = data_arr.begin(); miter != data_arr.end(); miter++) + { + (*miter)->arr_min = d_min; + } + + + //cout << data_arr.size() << "\t" << tag_arr.size() <<" before\n"; + filter_data_arr(data_arr); + if(!(pure_ram||pure_cam||g_ip->fully_assoc)) + { + filter_tag_arr(t_min, tag_arr); + } + //cout << data_arr.size() << "\t" << tag_arr.size() <<" after\n"; + + + if (pure_ram||pure_cam||g_ip->fully_assoc) + { + for (miter = data_arr.begin(); miter != data_arr.end(); miter++) + { + uca_org_t & curr_org = sol_list.back(); + curr_org.tag_array2 = NULL; + curr_org.data_array2 = (*miter); + + curr_org.find_delay(); + curr_org.find_energy(); + curr_org.find_area(); + curr_org.find_cyc(); + + //update min values for the entire cache + cache_min->update_min_values(curr_org); + + sol_list.push_back(uca_org_t()); + } + } + else + { + while (tag_arr.empty() != true) + { + mem_array * arr_temp = (tag_arr.back()); + //delete tag_arr.back(); + tag_arr.pop_back(); + + for (miter = data_arr.begin(); miter != data_arr.end(); miter++) + { + uca_org_t & curr_org = sol_list.back(); + curr_org.tag_array2 = arr_temp; + curr_org.data_array2 = (*miter); + + curr_org.find_delay(); + curr_org.find_energy(); + curr_org.find_area(); + curr_org.find_cyc(); + + //update min values for the entire cache + cache_min->update_min_values(curr_org); + + sol_list.push_back(uca_org_t()); + } + } + } + + sol_list.pop_back(); + + find_optimal_uca(fin_res, cache_min, sol_list); + + sol_list.clear(); + + for (miter = data_arr.begin(); miter != data_arr.end(); ++miter) + { + if (*miter != fin_res->data_array2) + { + delete *miter; + } + } + data_arr.clear(); + + for (uint32_t t = 0; t < nthreads; t++) + { + delete calc_array[t].data_res; + delete calc_array[t].tag_res; + } + + delete [] calc_array; + delete cache_min; + delete d_min; + delete t_min; +} + +void update(uca_org_t *fin_res) +{ + if(fin_res->tag_array2) + { + init_tech_params(g_ip->F_sz_um,true); + DynamicParameter tag_arr_dyn_p(true, g_ip->pure_ram, g_ip->pure_cam, fin_res->tag_array2->Nspd, fin_res->tag_array2->Ndwl, fin_res->tag_array2->Ndbl, fin_res->tag_array2->Ndcm, fin_res->tag_array2->Ndsam_lev_1, fin_res->tag_array2->Ndsam_lev_2, g_ip->is_main_mem); + if(tag_arr_dyn_p.is_valid) + { + UCA * tag_arr = new UCA(tag_arr_dyn_p); + fin_res->tag_array2->power = tag_arr->power; + } + else + { + cout << "ERROR: Cannot retrieve array structure for leakage feedback" << endl; + exit(1); + } + } + init_tech_params(g_ip->F_sz_um,false); + DynamicParameter data_arr_dyn_p(false, g_ip->pure_ram, g_ip->pure_cam, fin_res->data_array2->Nspd, fin_res->data_array2->Ndwl, fin_res->data_array2->Ndbl, fin_res->data_array2->Ndcm, fin_res->data_array2->Ndsam_lev_1, fin_res->data_array2->Ndsam_lev_2, g_ip->is_main_mem); + if(data_arr_dyn_p.is_valid) + { + UCA * data_arr = new UCA(data_arr_dyn_p); + fin_res->data_array2->power = data_arr->power; + } + else + { + cout << "ERROR: Cannot retrieve array structure for leakage feedback" << endl; + exit(1); + } + + fin_res->find_energy(); +} + |