diff options
Diffstat (limited to 'src/gpgpu-sim/shader.cc')
| -rw-r--r-- | src/gpgpu-sim/shader.cc | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/src/gpgpu-sim/shader.cc b/src/gpgpu-sim/shader.cc index 0e2e1c2..bb8e4b6 100644 --- a/src/gpgpu-sim/shader.cc +++ b/src/gpgpu-sim/shader.cc @@ -74,7 +74,7 @@ shader_core_ctx::shader_core_ctx( class gpgpu_sim *gpu, shader_core_stats *stats ) : core_t( gpu, NULL, config->warp_size, config->n_thread_per_shader ), m_barriers( this, config->max_warps_per_shader, config->max_cta_per_core, config->max_barriers_per_cta, config->warp_size ), - m_dynamic_warp_id(0) + m_dynamic_warp_id(0), m_active_warps(0) { m_cluster = cluster; m_config = config; @@ -357,6 +357,7 @@ void shader_core_ctx::reinit(unsigned start_thread, unsigned end_thread, bool re m_occupied_ctas = 0; m_occupied_hwtid.reset(); m_occupied_cta_to_hwtid.clear(); + m_active_warps = 0; } for (unsigned i = start_thread; i<end_thread; i++) { @@ -391,6 +392,7 @@ void shader_core_ctx::init_warps( unsigned cta_id, unsigned start_thread, unsign m_warp[i].init(start_pc,cta_id,i,active_threads, m_dynamic_warp_id); ++m_dynamic_warp_id; m_not_completed += n_active; + ++m_active_warps; } } } @@ -418,6 +420,18 @@ void shader_core_ctx::get_pdom_stack_top_info( unsigned tid, unsigned *pc, unsig m_simt_stack[warp_id]->get_pdom_stack_top_info(pc,rpc); } +float shader_core_ctx::get_current_occupancy( unsigned long long & active, unsigned long long & total ) const +{ + // To match the achieved_occupancy in nvprof, only SMs that are active are counted toward the occupancy. + if ( m_active_warps > 0 ) { + total += m_warp.size(); + active += m_active_warps; + return float(active) / float(total); + } else { + return 0; + } +} + void shader_core_stats::print( FILE* fout ) const { unsigned long long thread_icount_uarch=0; @@ -692,6 +706,8 @@ void shader_core_ctx::fetch() } if( did_exit ) m_warp[warp_id].set_done_exit(); + --m_active_warps; + assert(m_active_warps >= 0); } // this code fetches instructions from the i-cache or generates memory requests @@ -3524,6 +3540,15 @@ void simt_core_cluster::print_not_completed( FILE *fp ) const } } + +float simt_core_cluster::get_current_occupancy( unsigned long long& active, unsigned long long& total ) const { + float aggregate = 0.f; + for( unsigned i=0; i < m_config->n_simt_cores_per_cluster; i++ ) { + aggregate+=m_core[i]->get_current_occupancy( active, total ); + } + return aggregate / m_config->n_simt_cores_per_cluster; +} + unsigned simt_core_cluster::get_n_active_cta() const { unsigned n=0; |