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Diffstat (limited to 'src/gpgpu-sim/warp_tracker.cc')
| -rw-r--r-- | src/gpgpu-sim/warp_tracker.cc | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/src/gpgpu-sim/warp_tracker.cc b/src/gpgpu-sim/warp_tracker.cc deleted file mode 100644 index 44cbbc6..0000000 --- a/src/gpgpu-sim/warp_tracker.cc +++ /dev/null @@ -1,271 +0,0 @@ -/* - * warp_tracker.cc - * - * Copyright (c) 2009 by Tor M. Aamodt, Wilson W. L. Fung, Ali Bakhoda and the - * University of British Columbia - * Vancouver, BC V6T 1Z4 - * All Rights Reserved. - * - * THIS IS A LEGAL DOCUMENT BY DOWNLOADING GPGPU-SIM, YOU ARE AGREEING TO THESE - * TERMS AND CONDITIONS. - * - * 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 OWNERS 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. - * - * NOTE: The files libcuda/cuda_runtime_api.c and src/cuda-sim/cuda-math.h - * are derived from the CUDA Toolset available from http://www.nvidia.com/cuda - * (property of NVIDIA). The files benchmarks/BlackScholes/ and - * benchmarks/template/ are derived from the CUDA SDK available from - * http://www.nvidia.com/cuda (also property of NVIDIA). The files from - * src/intersim/ are derived from Booksim (a simulator provided with the - * textbook "Principles and Practices of Interconnection Networks" available - * from http://cva.stanford.edu/books/ppin/). As such, those files are bound by - * the corresponding legal terms and conditions set forth separately (original - * copyright notices are left in files from these sources and where we have - * modified a file our copyright notice appears before the original copyright - * notice). - * - * Using this version of GPGPU-Sim requires a complete installation of CUDA - * which is distributed seperately by NVIDIA under separate terms and - * conditions. To use this version of GPGPU-Sim with OpenCL requires a - * recent version of NVIDIA's drivers which support OpenCL. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - * 2. 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. - * - * 3. Neither the name of the University of British Columbia nor the names of - * its contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * 4. This version of GPGPU-SIM is distributed freely for non-commercial use only. - * - * 5. No nonprofit user may place any restrictions on the use of this software, - * including as modified by the user, by any other authorized user. - * - * 6. GPGPU-SIM was developed primarily by Tor M. Aamodt, Wilson W. L. Fung, - * Ali Bakhoda, George L. Yuan, at the University of British Columbia, - * Vancouver, BC V6T 1Z4 - */ - -#include "warp_tracker.h" -#include "gpu-sim.h" -#include "shader.h" -#include <set> - -using namespace std; - -/* - * Constructor for warp_tracker_pool. - * - * Resizes the warp_tracker map and pool and allocates empty warp_trackers. - * - * @param tid_in Array of thread id's corresponding to a warp - * @param *my_shader Pointer to the shader core - * - */ -warp_tracker_pool::warp_tracker_pool(class shader_core_ctx *my_shader) -{ - m_shader=my_shader; - const shader_core_config *config = my_shader->get_config(); - gpu_n_thread_per_shader = config->n_thread_per_shader; - warp_size = config->warp_size; - warp_tracker_map.resize(gpu_n_thread_per_shader); -} - -/* - * Register a new warp_tracker with a warp - * - * A warp_tracker is fetched from the pool of warp_trackers and assigned to - * track the input warp. A (sid,tid,pc) to warp_tracker mapping is also stored. - * - * @param tid_in Array of thread id's corresponding to a single warp (array of size warp_size) - * @param *shd Pointer to the shader core - * - */ -void warp_tracker_pool::wpt_register_warp( int *tid_in, address_type pc, unsigned n_thd, unsigned warp_size ) -{ - assert(n_thd); - warp_tracker *wpt = new warp_tracker(tid_in,pc,warp_size); - // assign the new warp_tracker to warp_tracker_map - for (unsigned i=0; i<warp_size; i++) { - if (tid_in[i] >= 0) { - assert( map_get_warp_tracker(tid_in[i],pc) == NULL ); - map_set_warp_tracker(tid_in[i], pc, wpt); - } - } -} - -/* - * Signal that the current thread has completed and ready to be unlocked. - * - * @param tid Thread that is exiting - * @param *shd Pointer to the shader core - * - * @return Returns true is all threads in the warp have completed. - */ -int warp_tracker_pool::wpt_signal_avail( int tid, address_type pc ) -{ - warp_tracker *wpt = map_get_warp_tracker(tid,pc); - assert(wpt != NULL); - - - // signal the warp tracker - if (wpt->avail_thd()) { - return 1; - } else { - return 0; - } -} - -/* - * Unlock a warp - * - * Unlocks a warp for re-fetching. Sets avail4fetch = 1 for all threads and increments n_avail4fetch - * by number of active threads. - * - * @param tid Thread that is exiting - * - */ -void warp_tracker_pool::wpt_deregister_warp( int tid, address_type pc ) { - warp_tracker *wpt = map_get_warp_tracker(tid,pc); - assert(wpt != NULL); - map_clear_warp_tracker(wpt); - delete wpt; -} - - -/* - * Signal that the a thread is done and is exiting (exit instruction) - * - * Marks a thread as completed. If all threads in the warp have completed, call register_cta_thread_exit on all - * threads and removed the warp from warp tracker. - * - * @param tid Thread that is exiting - * - * @return The warp's mask of active threads. - */ -int warp_tracker_pool::wpt_signal_complete( int tid, address_type pc ) -{ - warp_tracker *wpt = map_get_warp_tracker(tid,pc); - assert(wpt != NULL); - - // signal the warp tracker - if (wpt->complete_thd(tid)) { - // if the warp has completed execution, remove this warp_tracker - map_clear_warp_tracker(wpt); - int warp_mask = 0; - for (unsigned i=0; i<warp_size; i++) { - if (wpt->tid(i) >= 0) { - m_shader->register_cta_thread_exit( wpt->tid(i) ); - warp_mask |= (1 << i); - } - } - delete wpt; - return warp_mask; - } else { - return 0; - } -} - -/* - * Check if this thread is being tracked by the warp tracker currently - * - * Checks if any pc of the given tid maps to a warp_tracker - * - * @param tid Thread to check - * - * @return True is thread is being tracked - */ -bool warp_tracker_pool::wpt_thread_in_wpt(int tid) { - std::map<address_type, warp_tracker*>::iterator it; - for(it=warp_tracker_map[tid].begin(); it!=warp_tracker_map[tid].end(); it++) - if((*it).second != NULL) - return true; - - return false; -} - -//------------------------------------------------------------------------------------ - -map<unsigned, unsigned> thread_pc_tracker::histogram; - -thread_pc_tracker *thread_pc_tracker = NULL; - -void print_thread_pc_histogram( FILE *fout ) -{ - thread_pc_tracker::histo_print(fout); -} - -void print_thread_pc( FILE *fout, unsigned n_shader ) -{ - fprintf(fout, "SHD_PC_C: "); - for (unsigned i=0; i<n_shader; i++) { - fprintf(fout, "%d ", thread_pc_tracker[i].get_acc_pc_count() ); - } - fprintf(fout, "\n"); -} - -// uncomment to enable checking for warp consistency -// #define CHECK_WARP_CONSISTENCY - -void shader_core_ctx::check_stage_pcs( unsigned stage ) -{ -#ifdef CHECK_WARP_CONSISTENCY - address_type inst_pc = (address_type)-1; - unsigned tid; - if( m_config->model == MIMD ) - return; - - std::set<unsigned> tids; - - for ( int i = 0; i < m_config->warp_size; i++) { - if (m_pipeline_reg[i][stage].hw_thread_id == -1 ) - continue; - if ( inst_pc == (address_type)-1 ) - inst_pc = m_pipeline_reg[i][stage].pc; - tid = m_pipeline_reg[i][stage].hw_thread_id; - assert( tids.find(tid) == tids.end() ); - tids.insert(tid); - assert( inst_pc == m_pipeline_reg[i][stage].pc ); - } -#endif -} - -void shader_core_ctx::check_pm_stage_pcs( unsigned stage ) -{ -#ifdef CHECK_WARP_CONSISTENCY - address_type inst_pc = (address_type)-1; - unsigned tid; - if( m_config->model == MIMD ) - return; - - std::set<unsigned> tids; - - for (int i = 0; i < m_config->warp_size; i++) { - if (pre_mem_pipeline[i][stage].hw_thread_id == -1 ) - continue; - if ( inst_pc == (address_type)-1 ) - inst_pc = pre_mem_pipeline[i][stage].pc; - tid = pre_mem_pipeline[i][stage].hw_thread_id; - assert( tids.find(tid) == tids.end() ); - tids.insert(tid); - assert( inst_pc == pre_mem_pipeline[i][stage].pc ); - } -#endif -} |