diff options
Diffstat (limited to 'src/abstract_hardware_model.cc')
| -rw-r--r-- | src/abstract_hardware_model.cc | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/src/abstract_hardware_model.cc b/src/abstract_hardware_model.cc index dc1dc5c..307df40 100644 --- a/src/abstract_hardware_model.cc +++ b/src/abstract_hardware_model.cc @@ -411,7 +411,7 @@ void warp_inst_t::generate_mem_accesses() break; case global_space: case local_space: case param_space_local: - if( m_config->gpgpu_coalesce_arch >= 13 && m_config->gpgpu_coalesce_arch <= 62) { + if( m_config->gpgpu_coalesce_arch >= 13) { if(isatomic()) memory_coalescing_arch_atomic(is_write, access_type); else @@ -466,7 +466,7 @@ void warp_inst_t::memory_coalescing_arch( bool is_write, mem_access_type access_ } else if(m_config->gpgpu_coalesce_arch >= 40) { - //Maxwell and Pascal, L1 and L2 are sectors + //Maxwell, Pascal and Volta, L1 and L2 are sectors //all requests should be 32 bytes sector_segment_size = true; } @@ -538,11 +538,28 @@ void warp_inst_t::memory_coalescing_arch_atomic( bool is_write, mem_access_type // see the CUDA manual where it discusses coalescing rules before reading this unsigned segment_size = 0; - unsigned warp_parts = 2; + unsigned warp_parts = m_config->mem_warp_parts; + bool sector_segment_size = false; + + if(m_config->gpgpu_coalesce_arch >= 20 && m_config->gpgpu_coalesce_arch < 39) + { + //Fermi and Kepler, L1 is normal and L2 is sector + if(m_config->gmem_skip_L1D || cache_op == CACHE_GLOBAL) + sector_segment_size = true; + else + sector_segment_size = false; + } + else if(m_config->gpgpu_coalesce_arch >= 40) + { + //Maxwell, Pascal and Volta, L1 and L2 are sectors + //all requests should be 32 bytes + sector_segment_size = true; + } + switch( data_size ) { case 1: segment_size = 32; break; - case 2: segment_size = 64; break; - case 4: case 8: case 16: segment_size = 128; break; + case 2: segment_size = sector_segment_size? 32 : 64; break; + case 4: case 8: case 16: segment_size = sector_segment_size? 32 : 128; break; } unsigned subwarp_size = m_config->warp_size / warp_parts; |