diff options
Diffstat (limited to 'src/gpgpu-sim/shader.cc')
| -rw-r--r-- | src/gpgpu-sim/shader.cc | 85 |
1 files changed, 46 insertions, 39 deletions
diff --git a/src/gpgpu-sim/shader.cc b/src/gpgpu-sim/shader.cc index 16bc770..ef38593 100644 --- a/src/gpgpu-sim/shader.cc +++ b/src/gpgpu-sim/shader.cc @@ -3082,49 +3082,56 @@ unsigned int shader_core_config::max_cta(const kernel_info_t &k) const { abort(); } - if(adaptive_cache_config && !k.cache_config_set) { - //For more info about adaptive cache, see https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#shared-memory-7-x - unsigned total_shmed = kernel_info->smem * result; - assert(total_shmed >=0 && total_shmed <= gpgpu_shmem_size); - //assert(gpgpu_shmem_size == 98304); //Volta has 96 KB shared - //assert(m_L1D_config.get_nset() == 4); //Volta L1 has four sets - if(total_shmed < gpgpu_shmem_size){ - switch (adaptive_cache_config) { - case FIXED: - break; - case VOLTA: { - //For Volta, we assign the remaining shared memory to L1 cache - //For more info about adaptive cache, see https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#shared-memory-7-x - assert(gpgpu_shmem_size == 98304); //Volta has 96 KB shared - - //To Do: make it flexible and not tuned to 9KB share memory - unsigned max_assoc = m_L1D_config.get_max_assoc(); - if(total_shmed == 0) - m_L1D_config.set_assoc(max_assoc); //L1 is 128KB and shd=0 - else if(total_shmed > 0 && total_shmed <= 8192) - m_L1D_config.set_assoc(0.9375 * max_assoc); //L1 is 120KB and shd=8KB - else if(total_shmed > 8192 && total_shmed <= 16384) - m_L1D_config.set_assoc(0.875 * max_assoc); //L1 is 112KB and shd=16KB - else if(total_shmed > 16384 && total_shmed <= 32768) - m_L1D_config.set_assoc(0.75 * max_assoc); //L1 is 96KB and shd=32KB - else if(total_shmed > 32768 && total_shmed <= 65536) - m_L1D_config.set_assoc(0.5 * max_assoc); //L1 is 64KB and shd=64KB - else if(total_shmed > 65536 && total_shmed <= gpgpu_shmem_size) - m_L1D_config.set_assoc(0.25 * max_assoc); //L1 is 32KB and shd=96KB - else - assert(0); - break; - } - default: - assert(0); - } + if (adaptive_cache_config && !k.cache_config_set) { + // For more info about adaptive cache, see + // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#shared-memory-7-x + unsigned total_shmed = kernel_info->smem * result; + assert(total_shmed >= 0 && total_shmed <= gpgpu_shmem_size); + // assert(gpgpu_shmem_size == 98304); //Volta has 96 KB shared + // assert(m_L1D_config.get_nset() == 4); //Volta L1 has four sets + if (total_shmed < gpgpu_shmem_size) { + switch (adaptive_cache_config) { + case FIXED: + break; + case VOLTA: { + // For Volta, we assign the remaining shared memory to L1 cache + // For more info about adaptive cache, see + // https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#shared-memory-7-x + assert(gpgpu_shmem_size == 98304); // Volta has 96 KB shared - printf ("GPGPU-Sim: Reconfigure L1 cache to %uKB\n", m_L1D_config.get_total_size_inKB()); - } + // To Do: make it flexible and not tuned to 9KB share memory + unsigned max_assoc = m_L1D_config.get_max_assoc(); + if (total_shmed == 0) + m_L1D_config.set_assoc(max_assoc); // L1 is 128KB and shd=0 + else if (total_shmed > 0 && total_shmed <= 8192) + m_L1D_config.set_assoc(0.9375 * + max_assoc); // L1 is 120KB and shd=8KB + else if (total_shmed > 8192 && total_shmed <= 16384) + m_L1D_config.set_assoc(0.875 * + max_assoc); // L1 is 112KB and shd=16KB + else if (total_shmed > 16384 && total_shmed <= 32768) + m_L1D_config.set_assoc(0.75 * max_assoc); // L1 is 96KB and + // shd=32KB + else if (total_shmed > 32768 && total_shmed <= 65536) + m_L1D_config.set_assoc(0.5 * max_assoc); // L1 is 64KB and shd=64KB + else if (total_shmed > 65536 && total_shmed <= gpgpu_shmem_size) + m_L1D_config.set_assoc(0.25 * max_assoc); // L1 is 32KB and + // shd=96KB + else + assert(0); + break; + } + default: + assert(0); + } - k.cache_config_set = true; + printf("GPGPU-Sim: Reconfigure L1 cache to %uKB\n", + m_L1D_config.get_total_size_inKB()); } + k.cache_config_set = true; + } + return result; } |