diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gpgpu-sim/gpu-sim.cc | 4 | ||||
| -rw-r--r-- | src/gpgpu-sim/l2cache.cc | 5 | ||||
| -rw-r--r-- | src/gpgpu-sim/l2cache.h | 10 |
3 files changed, 13 insertions, 6 deletions
diff --git a/src/gpgpu-sim/gpu-sim.cc b/src/gpgpu-sim/gpu-sim.cc index 0267c31..8dc80d2 100644 --- a/src/gpgpu-sim/gpu-sim.cc +++ b/src/gpgpu-sim/gpu-sim.cc @@ -1602,8 +1602,7 @@ void gpgpu_sim::perf_memcpy_to_gpu( size_t dst_start_addr, size_t count ) { if (m_memory_config->m_perf_sim_memcpy) { assert (dst_start_addr % 32 == 0); - // Right now - I am just going to assume you write the whole last cache line... - // assert (count % 128 == 0); + for ( unsigned counter = 0; counter < count; counter += 32 ) { const unsigned wr_addr = dst_start_addr + counter; addrdec_t raw_addr; @@ -1612,7 +1611,6 @@ void gpgpu_sim::perf_memcpy_to_gpu( size_t dst_start_addr, size_t count ) m_memory_config->m_address_mapping.addrdec_tlx( wr_addr, &raw_addr ); const unsigned partition_id = raw_addr.sub_partition / m_memory_config->m_n_sub_partition_per_memory_channel; m_memory_partition_unit[ partition_id ]->handle_memcpy_to_gpu( wr_addr, raw_addr.sub_partition, mask ); - gpu_sim_cycle += 1; } } } diff --git a/src/gpgpu-sim/l2cache.cc b/src/gpgpu-sim/l2cache.cc index fb0d588..b1465a8 100644 --- a/src/gpgpu-sim/l2cache.cc +++ b/src/gpgpu-sim/l2cache.cc @@ -315,6 +315,7 @@ memory_sub_partition::memory_sub_partition( unsigned sub_partition_id, m_id = sub_partition_id; m_config=config; m_stats=stats; + m_memcpy_cycle_offset = 0; assert(m_id < m_config->m_n_mem_sub_partition); @@ -378,7 +379,7 @@ void memory_sub_partition::cache_cycle( unsigned cycle ) if ( !m_config->m_L2_config.disabled() && m_L2cache->waiting_for_fill(mf) ) { if (m_L2cache->fill_port_free()) { mf->set_status(IN_PARTITION_L2_FILL_QUEUE,gpu_sim_cycle+gpu_tot_sim_cycle); - m_L2cache->fill(mf,gpu_sim_cycle+gpu_tot_sim_cycle); + m_L2cache->fill(mf,gpu_sim_cycle+gpu_tot_sim_cycle+m_memcpy_cycle_offset); m_dram_L2_queue->pop(); } } else if ( !m_L2_icnt_queue->full() ) { @@ -404,7 +405,7 @@ void memory_sub_partition::cache_cycle( unsigned cycle ) bool port_free = m_L2cache->data_port_free(); if ( !output_full && port_free ) { std::list<cache_event> events; - enum cache_request_status status = m_L2cache->access(mf->get_addr(),mf,gpu_sim_cycle+gpu_tot_sim_cycle,events); + enum cache_request_status status = m_L2cache->access(mf->get_addr(),mf,gpu_sim_cycle+gpu_tot_sim_cycle+m_memcpy_cycle_offset,events); bool write_sent = was_write_sent(events); bool read_sent = was_read_sent(events); MEM_SUBPART_DPRINTF("Probing L2 cache Address=%llx, status=%u\n", mf->get_addr(), status); diff --git a/src/gpgpu-sim/l2cache.h b/src/gpgpu-sim/l2cache.h index b613a94..2d13918 100644 --- a/src/gpgpu-sim/l2cache.h +++ b/src/gpgpu-sim/l2cache.h @@ -181,7 +181,8 @@ public: void force_l2_tag_update(new_addr_type addr, unsigned time, mem_access_sector_mask_t mask) { - m_L2cache->force_tag_access( addr, time, mask ); + m_L2cache->force_tag_access( addr, m_memcpy_cycle_offset + time, mask ); + m_memcpy_cycle_offset += 1; } private: @@ -216,6 +217,13 @@ private: friend class L2interface; std::vector<mem_fetch*> breakdown_request_to_sector_requests(mem_fetch* mf); + + // This is a cycle offset that has to be applied to the l2 accesses to account for + // the cudamemcpy read/writes. We want GPGPU-Sim to only count cycles for kernel execution + // but we want cudamemcpy to go through the L2. Everytime an access is made from cudamemcpy + // this counter is incremented, and when the l2 is accessed (in both cudamemcpyies and otherwise) + // this value is added to the gpgpu-sim cycle counters. + unsigned m_memcpy_cycle_offset; }; class L2interface : public mem_fetch_interface { |