diff options
| -rw-r--r-- | configs/tested-cfgs/SM7_TITANV_fastlocalxbar/gpgpusim.config | 192 | ||||
| -rw-r--r-- | src/cuda-sim/cuda-sim.h | 2 | ||||
| -rw-r--r-- | src/gpgpu-sim/gpu-sim.cc | 4 | ||||
| -rw-r--r-- | src/gpgpu-sim/icnt_wrapper.cc | 90 | ||||
| -rw-r--r-- | src/gpgpu-sim/icnt_wrapper.h | 5 | ||||
| -rw-r--r-- | src/gpgpu-sim/local_interconnect.cc | 277 | ||||
| -rw-r--r-- | src/gpgpu-sim/local_interconnect.h | 116 | ||||
| -rw-r--r-- | src/gpgpu-sim/shader.cc | 78 | ||||
| -rw-r--r-- | src/gpgpu-sim/shader.h | 26 | ||||
| -rw-r--r-- | src/gpgpusim_entrypoint.cc | 6 |
10 files changed, 773 insertions, 23 deletions
diff --git a/configs/tested-cfgs/SM7_TITANV_fastlocalxbar/gpgpusim.config b/configs/tested-cfgs/SM7_TITANV_fastlocalxbar/gpgpusim.config new file mode 100644 index 0000000..73516e1 --- /dev/null +++ b/configs/tested-cfgs/SM7_TITANV_fastlocalxbar/gpgpusim.config @@ -0,0 +1,192 @@ +# This config models the Volta Titan X +# For more info about volta architecture: +# http://images.nvidia.com/content/volta-architecture/pdf/volta-architecture-whitepaper.pdf +# https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8344474&tag=1# +# http://on-demand.gputechconf.com/gtc/2018/presentation/s8122-dissecting-the-volta-gpu-architecture-through-microbenchmarking.pdf +# https://en.wikipedia.org/wiki/Volta_(microarchitecture) +# https://www.hotchips.org/wp-content/uploads/hc_archives/hc29/HC29.21-Monday-Pub/HC29.21.10-GPU-Gaming-Pub/HC29.21.132-Volta-Choquette-NVIDIA-Final3.pdf +# https://devblogs.nvidia.com/inside-volta/ +# http://on-demand.gputechconf.com/gtc/2017/presentation/s7798-luke-durant-inside-volta.pdf + +# functional simulator specification +-gpgpu_ptx_instruction_classification 0 +-gpgpu_ptx_sim_mode 0 +-gpgpu_ptx_force_max_capability 70 + +# SASS execution (only supported with CUDA >= 4.0) +-gpgpu_ptx_convert_to_ptxplus 0 +-gpgpu_ptx_save_converted_ptxplus 0 + +# high level architecture configuration +-gpgpu_n_clusters 40 +-gpgpu_n_cores_per_cluster 2 +-gpgpu_n_mem 24 +-gpgpu_n_sub_partition_per_mchannel 2 + +# volta clock domains +#-gpgpu_clock_domains <Core Clock>:<Interconnect Clock>:<L2 Clock>:<DRAM Clock> +# Volta NVIDIA V100 clock domains are adopted from +# https://en.wikipedia.org/wiki/Volta_(microarchitecture) +-gpgpu_clock_domains 1200.0:1200.0:1200.0:850.0 +# boost mode +# -gpgpu_clock_domains 1455.0:1455.0:1455.0:850.0 + +# shader core pipeline config +-gpgpu_shader_registers 65536 +-gpgpu_occupancy_sm_number 70 + +# This implies a maximum of 64 warps/SM +-gpgpu_shader_core_pipeline 2048:32 +-gpgpu_shader_cta 32 +-gpgpu_simd_model 1 + +# Pipeline widths and number of FUs +# ID_OC_SP,ID_OC_DP,ID_OC_INT,ID_OC_SFU,ID_OC_MEM,OC_EX_SP,OC_EX_DP,OC_EX_INT,OC_EX_SFU,OC_EX_MEM,EX_WB,ID_OC_TENSOR_CORE,OC_EX_TENSOR_CORE +## Volta GV100 has 4 SP SIMD units, 4 SFU units, 4 DP units per core +## we need to scale the number of pipeline registers to be equal to the number of SP units +-gpgpu_pipeline_widths 4,4,4,4,4,4,4,4,4,4,8,4,4 +-gpgpu_num_sp_units 4 +-gpgpu_num_sfu_units 4 +-gpgpu_num_dp_units 4 +-gpgpu_num_int_units 4 +-gpgpu_tensor_core_avail 1 +-gpgpu_num_tensor_core_units 4 + +# Instruction latencies and initiation intervals +# "ADD,MAX,MUL,MAD,DIV" +# All Div operations are executed on SFU unit +# Throughput (initiation latency) are adopted from +# http://on-demand.gputechconf.com/gtc/2018/presentation/s8122-dissecting-the-volta-gpu-architecture-through-microbenchmarking.pdf +-ptx_opcode_latency_int 4,13,4,5,145 +-ptx_opcode_initiation_int 2,2,2,2,8 +-ptx_opcode_latency_fp 4,13,4,5,39 +-ptx_opcode_initiation_fp 2,2,2,2,4 +-ptx_opcode_latency_dp 8,19,8,8,330 +-ptx_opcode_initiation_dp 4,4,4,4,130 +-ptx_opcode_latency_sfu 100 +-ptx_opcode_initiation_sfu 8 +-ptx_opcode_latency_tesnor 64 +-ptx_opcode_initiation_tensor 64 + +# <nsets>:<bsize>:<assoc>,<rep>:<wr>:<alloc>:<wr_alloc>:<set_index_fn>,<mshr>:<N>:<merge>,<mq>:**<fifo_entry> +# ** Optional parameter - Required when mshr_type==Texture Fifo +# Defualt config is 32KB DL1 and 96KB shared memory +# In Volta, we assign the remaining shared memory to L1 cache +# if the assigned shd mem = 0, then L1 cache = 128KB +# For more info, see https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#shared-memory-7-x +# disable this mode in case of multi kernels/apps execution +-adpative_volta_cache_config 1 +# Volta unified cache has four ports +-mem_unit_ports 4 +-gpgpu_cache:dl1 S:4:128:64,L:L:s:N:L,A:256:8,16:0,32 +-gpgpu_shmem_size 98304 +-gmem_skip_L1D 0 +-icnt_flit_size 40 +-gpgpu_n_cluster_ejection_buffer_size 32 +-l1_latency 28 +-smem_latency 19 +-gpgpu_flush_l1_cache 1 + +# 32 sets, each 128 bytes 24-way for each memory sub partition (96 KB per memory sub partition). This gives us 4.5MB L2 cache +-gpgpu_cache:dl2 S:32:128:24,L:B:m:L:L,A:192:4,32:0,32 +-gpgpu_cache:dl2_texture_only 0 +-gpgpu_dram_partition_queues 64:64:64:64 +-perf_sim_memcpy 1 +-memory_partition_indexing 0 + +# 128 KB Inst. +-gpgpu_cache:il1 N:64:128:16,L:R:f:N:L,S:2:48,4 +# 48 KB Tex +# Note, TEX is deprected in Volta, It is used for legacy apps only. Use L1D cache instead with .nc modifier or __ldg mehtod +-gpgpu_tex_cache:l1 N:16:128:24,L:R:m:N:L,T:128:4,128:2 +# 64 KB Const +-gpgpu_const_cache:l1 N:128:64:8,L:R:f:N:L,S:2:64,4 + +# Volta has sub core model, in which each scheduler has its own reisiter file and EUs +# i.e. schedulers are isolated +-sub_core_model 0 +# disable specialized operand collectors and use generic operand collectors instead +-enable_specialized_operand_collector 0 +-gpgpu_operand_collector_num_units_gen 8 +-gpgpu_operand_collector_num_in_ports_gen 8 +-gpgpu_operand_collector_num_out_ports_gen 8 +# volta has 8 banks, 4 schedulers, two banks per scheduler +-gpgpu_num_reg_banks 8 + +# shared memory bankconflict detection +-gpgpu_shmem_num_banks 32 +-gpgpu_shmem_limited_broadcast 0 +-gpgpu_shmem_warp_parts 1 +-gpgpu_coalesce_arch 60 + +## In Volta, a warp scheduler can issue 1 inst per cycle +-gpgpu_max_insn_issue_per_warp 1 +-gpgpu_dual_issue_diff_exec_units 1 + +# interconnection +-network_mode 2 +-inter_config_file config_fermi_islip.icnt +-inct_in_buffer_limit 512 +-inct_out_buffer_limit 512 +-inct_subnets 2 +-fast_execution_mode 1 + +# memory partition latency config +-rop_latency 120 +-dram_latency 100 + +# dram model config +-gpgpu_dram_scheduler 1 +-gpgpu_frfcfs_dram_sched_queue_size 64 +-gpgpu_dram_return_queue_size 192 + +# for HBM, three stacks, 24 channles, each (128 bits) 16 bytes width +-gpgpu_n_mem_per_ctrlr 1 +-gpgpu_dram_buswidth 16 +-gpgpu_dram_burst_length 2 +-dram_data_command_freq_ratio 2 # HBM is DDR +-gpgpu_mem_address_mask 1 +-gpgpu_mem_addr_mapping dramid@8;00000000.00000000.00000000.00000000.0000RRRR.RRRRRRRR.RBBBCCCB.CCCSSSSS + +# HBM timing are adopted from hynix JESD235 standered and nVidia HPCA 2017 paper (http://www.cs.utah.edu/~nil/pubs/hpca17.pdf) +# Timing for 1 GHZ +# tRRDl and tWTR are missing, need to be added +#-gpgpu_dram_timing_opt "nbk=16:CCD=1:RRD=4:RCD=14:RAS=33:RP=14:RC=47: +# CL=14:WL=2:CDLR=3:WR=12:nbkgrp=4:CCDL=2:RTPL=4" + +# Timing for 850 MHZ, Tesla TITANV V100 HBM runs at 850 MHZ +-gpgpu_dram_timing_opt "nbk=16:CCD=1:RRD=3:RCD=12:RAS=28:RP=12:RC=40: + CL=12:WL=2:CDLR=3:WR=10:nbkgrp=4:CCDL=2:RTPL=3" + +# HBM has dual bus interface, in which it can issue two col and row commands at a time +-dual_bus_interface 1 +# select lower bits for bnkgrp to increase bnkgrp parallelism +-dram_bnk_indexing_policy 0 +-dram_bnkgrp_indexing_policy 1 + +#-Seperate_Write_Queue_Enable 1 +#-Write_Queue_Size 64:56:32 + +# Pascal has two schedulers per core +-gpgpu_num_sched_per_core 4 +# Two Level Scheduler with active and pending pools +#-gpgpu_scheduler two_level_active:6:0:1 +# Loose round robbin scheduler +#-gpgpu_scheduler lrr +# Greedy then oldest scheduler +-gpgpu_scheduler gto + +# stat collection +-gpgpu_memlatency_stat 14 +-gpgpu_runtime_stat 500 +-enable_ptx_file_line_stats 1 +-visualizer_enabled 0 + +# power model configs, disable it untill we create a real energy model for Pascal 100 +-power_simulation_enabled 0 + +# tracing functionality +#-trace_enabled 1 +#-trace_components WARP_SCHEDULER,SCOREBOARD +#-trace_sampling_core 0 + diff --git a/src/cuda-sim/cuda-sim.h b/src/cuda-sim/cuda-sim.h index abd32f9..e690356 100644 --- a/src/cuda-sim/cuda-sim.h +++ b/src/cuda-sim/cuda-sim.h @@ -47,6 +47,8 @@ extern int g_debug_thread_uid; extern void ** g_inst_classification_stat; extern void ** g_inst_op_classification_stat; extern int g_ptx_kernel_count; // used for classification stat collection purposes +extern char *opcode_latency_int, *opcode_latency_fp, *opcode_latency_dp,*opcode_latency_sfu,*opcode_latency_tensor; + void ptx_opcocde_latency_options (option_parser_t opp); extern class kernel_info_t *gpgpu_opencl_ptx_sim_init_grid(class function_info *entry, diff --git a/src/gpgpu-sim/gpu-sim.cc b/src/gpgpu-sim/gpu-sim.cc index ec570bf..81d9b69 100644 --- a/src/gpgpu-sim/gpu-sim.cc +++ b/src/gpgpu-sim/gpu-sim.cc @@ -476,6 +476,10 @@ void shader_core_config::reg_options(class OptionParser * opp) option_parser_register(opp, "-gpgpu_concurrent_kernel_sm", OPT_BOOL, &gpgpu_concurrent_kernel_sm, "Support concurrent kernels on a SM (default = disabled)", "0"); + + option_parser_register(opp, "-fast_execution_mode", OPT_BOOL, &fast_execution_mode, + "fast_execution_mode (default = disabled)", + "0"); } void gpgpu_sim_config::reg_options(option_parser_t opp) diff --git a/src/gpgpu-sim/icnt_wrapper.cc b/src/gpgpu-sim/icnt_wrapper.cc index ee58ece..075e371 100644 --- a/src/gpgpu-sim/icnt_wrapper.cc +++ b/src/gpgpu-sim/icnt_wrapper.cc @@ -29,6 +29,8 @@ #include <assert.h> #include "../intersim2/globals.hpp" #include "../intersim2/interconnect_interface.hpp" +#include "local_interconnect.h" + icnt_create_p icnt_create; icnt_init_p icnt_init; @@ -42,9 +44,13 @@ icnt_display_overall_stats_p icnt_display_overall_stats; icnt_display_state_p icnt_display_state; icnt_get_flit_size_p icnt_get_flit_size; -int g_network_mode; +unsigned g_network_mode; char* g_network_config_filename; + +struct inct_config g_inct_config; +LocalInterconnect *g_localicnt_interface; + #include "../option_parser.h" // Wrapper to intersim2 to accompany old icnt_wrapper @@ -105,10 +111,78 @@ static unsigned intersim2_get_flit_size() return g_icnt_interface->GetFlitSize(); } + +////////////////////////////////////////////////////// + +static void LocalInterconnect_create(unsigned int n_shader, unsigned int n_mem) +{ + g_localicnt_interface->CreateInterconnect(n_shader, n_mem); +} + +static void LocalInterconnect_init() +{ + g_localicnt_interface->Init(); +} + +static bool LocalInterconnect_has_buffer(unsigned input, unsigned int size) +{ + return g_localicnt_interface->HasBuffer(input, size); +} + +static void LocalInterconnect_push(unsigned input, unsigned output, void* data, unsigned int size) +{ + g_localicnt_interface->Push(input, output, data, size); +} + +static void* LocalInterconnect_pop(unsigned output) +{ + return g_localicnt_interface->Pop(output); +} + +static void LocalInterconnect_transfer() +{ + g_localicnt_interface->Advance(); +} + +static bool LocalInterconnect_busy() +{ + return g_localicnt_interface->Busy(); +} + +static void LocalInterconnect_display_stats() +{ + g_localicnt_interface->DisplayStats(); +} + +static void LocalInterconnect_display_overall_stats() +{ + g_localicnt_interface->DisplayOverallStats(); +} + +static void LocalInterconnect_display_state(FILE *fp) +{ + g_localicnt_interface->DisplayState(fp); +} + +static unsigned LocalInterconnect_get_flit_size() +{ + return g_localicnt_interface->GetFlitSize(); +} + + +/////////////////////////// + void icnt_reg_options( class OptionParser * opp ) { option_parser_register(opp, "-network_mode", OPT_INT32, &g_network_mode, "Interconnection network mode", "1"); option_parser_register(opp, "-inter_config_file", OPT_CSTR, &g_network_config_filename, "Interconnection network config file", "mesh"); + + + //parameters for local xbar + option_parser_register(opp, "-inct_in_buffer_limit", OPT_UINT32, &g_inct_config.in_buffer_limit, "in_buffer_limit", "64"); + option_parser_register(opp, "-inct_out_buffer_limit", OPT_UINT32, &g_inct_config.out_buffer_limit, "out_buffer_limit", "64"); + option_parser_register(opp, "-inct_subnets", OPT_UINT32, &g_inct_config.subnets, "subnets", "2"); + } void icnt_wrapper_init() @@ -129,6 +203,20 @@ void icnt_wrapper_init() icnt_display_state = intersim2_display_state; icnt_get_flit_size = intersim2_get_flit_size; break; + case LOCAL_XBAR: + g_localicnt_interface = LocalInterconnect::New(g_inct_config); + icnt_create = LocalInterconnect_create; + icnt_init = LocalInterconnect_init; + icnt_has_buffer = LocalInterconnect_has_buffer; + icnt_push = LocalInterconnect_push; + icnt_pop = LocalInterconnect_pop; + icnt_transfer = LocalInterconnect_transfer; + icnt_busy = LocalInterconnect_busy; + icnt_display_stats = LocalInterconnect_display_stats; + icnt_display_overall_stats = LocalInterconnect_display_overall_stats; + icnt_display_state = LocalInterconnect_display_state; + icnt_get_flit_size = LocalInterconnect_get_flit_size; + break; default: assert(0); break; diff --git a/src/gpgpu-sim/icnt_wrapper.h b/src/gpgpu-sim/icnt_wrapper.h index a4d123e..e1086f9 100644 --- a/src/gpgpu-sim/icnt_wrapper.h +++ b/src/gpgpu-sim/icnt_wrapper.h @@ -57,13 +57,16 @@ extern icnt_display_stats_p icnt_display_stats; extern icnt_display_overall_stats_p icnt_display_overall_stats; extern icnt_display_state_p icnt_display_state; extern icnt_get_flit_size_p icnt_get_flit_size; -extern int g_network_mode; +extern unsigned g_network_mode; enum network_mode { INTERSIM = 1, + LOCAL_XBAR = 2, N_NETWORK_MODE }; + + void icnt_wrapper_init(); void icnt_reg_options( class OptionParser * opp ); diff --git a/src/gpgpu-sim/local_interconnect.cc b/src/gpgpu-sim/local_interconnect.cc new file mode 100644 index 0000000..1d93fe6 --- /dev/null +++ b/src/gpgpu-sim/local_interconnect.cc @@ -0,0 +1,277 @@ +// Copyright (c) 2009-2013, Tor M. Aamodt, Dongdong Li, Ali Bakhoda +// The University of British Columbia +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// Redistributions of source code must retain the above copyright notice, this +// list of conditions and the following disclaimer. +// 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. +// 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. +// +// 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 HOLDER 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. + +#include <fstream> +#include <iostream> +#include <sstream> +#include <iomanip> +#include <cmath> +#include <utility> +#include <algorithm> + +#include "local_interconnect.h" +#include "mem_fetch.h" + +xbar_router::xbar_router(unsigned router_id, unsigned n_shader, unsigned n_mem, unsigned m_in_buffer_limit, unsigned m_out_buffer_limit) +{ + m_id=router_id; + _n_mem = n_mem; + _n_shader = n_shader; + total_nodes = n_shader+n_mem; + in_buffers.resize(total_nodes); + out_buffers.resize(total_nodes); + next_node=0; + in_buffer_limit = m_in_buffer_limit; + out_buffer_limit = m_out_buffer_limit; + + cycles = 0; + conflicts= 0; + out_buffer_full=0; + packets_num=0; +} + + +xbar_router::~xbar_router() +{ + +} + +void xbar_router::Push(unsigned input_deviceID, unsigned output_deviceID, void* data, unsigned int size) +{ + assert(input_deviceID < total_nodes); + in_buffers[input_deviceID].push(Packet(data, output_deviceID)); + packets_num++; +} + +void* xbar_router::Pop(unsigned ouput_deviceID) +{ + assert(ouput_deviceID < total_nodes); + void* data = NULL; + + if(!out_buffers[ouput_deviceID].empty()) { + data = out_buffers[ouput_deviceID].front().data; + out_buffers[ouput_deviceID].pop(); + } + + return data; +} + + +bool xbar_router::Has_Buffer_In(unsigned input_deviceID, unsigned size) const{ + + assert(input_deviceID < total_nodes); + return (in_buffers[input_deviceID].size() + size <= in_buffer_limit); + +} + +bool xbar_router::Has_Buffer_Out(unsigned output_deviceID, unsigned size) const{ + return (out_buffers[output_deviceID].size() + size <= out_buffer_limit); +} + +void xbar_router::Advance() { + cycles++; + + vector<bool> issued(total_nodes, false); + + for(unsigned i=0; i<total_nodes; ++i){ + unsigned node_id = (i+next_node)%total_nodes; + + if(!in_buffers[node_id].empty()) { + Packet _packet = in_buffers[node_id].front(); + //ensure that the outbuffer has space and not issued before in this cycle + if(Has_Buffer_Out(_packet.output_deviceID, 1)){ + if(!issued[_packet.output_deviceID]) { + out_buffers[_packet.output_deviceID].push(_packet); + in_buffers[node_id].pop(); + issued[_packet.output_deviceID]=true; + } + else + conflicts++; + } + else + out_buffer_full++; + } + } + + next_node = (++next_node % total_nodes); +} + +bool xbar_router::Busy() const { + + for(unsigned i=0; i<total_nodes; ++i){ + if(!in_buffers[i].empty()) + return true; + + if(!out_buffers[i].empty()) + return true; + } + return false; +} + + +//////////////////////////////////////////////////// +/////////////LocalInterconnect///////////////////// + +//assume all the packets are one flit +#define LOCAL_INCT_FLIT_SIZE 40 + +LocalInterconnect* LocalInterconnect::New(const struct inct_config& m_localinct_config) +{ + + LocalInterconnect* icnt_interface = new LocalInterconnect(m_localinct_config); + + return icnt_interface; +} + +LocalInterconnect::LocalInterconnect(const struct inct_config& m_localinct_config): m_inct_config(m_localinct_config) +{ + n_shader=0; + n_mem=0; + n_subnets = m_localinct_config.subnets; + +} + +LocalInterconnect::~LocalInterconnect() +{ + for (int i=0; i<m_inct_config.subnets; ++i) { + delete net[i]; + } +} + +void LocalInterconnect::CreateInterconnect(unsigned m_n_shader, unsigned m_n_mem) +{ + n_shader = m_n_shader; + n_mem = m_n_mem; + + net.resize(n_subnets); + for (unsigned i = 0; i < n_subnets; ++i) { + net[i] = new xbar_router( i, m_n_shader, m_n_mem, m_inct_config.in_buffer_limit, m_inct_config.out_buffer_limit ); + } + +} + + +void LocalInterconnect::Init() { + + //empty + //there is nothing to do + +} + +void LocalInterconnect::Push(unsigned input_deviceID, unsigned output_deviceID, void* data, unsigned int size){ + + unsigned subnet; + if (n_subnets == 1) { + subnet = 0; + } else { + if (input_deviceID < n_shader ) { + subnet = 0; + } else { + subnet = 1; + } + } + + // it should have free buffer + //assume all the packets have size of one + //no flits are implemented + assert(net[subnet]->Has_Buffer_In(input_deviceID, 1)); + + net[subnet]->Push(input_deviceID, output_deviceID, data, size); + +} + +void* LocalInterconnect::Pop(unsigned ouput_deviceID){ + + // 0-_n_shader-1 indicates reply(network 1), otherwise request(network 0) + int subnet = 0; + if (ouput_deviceID < n_shader) + subnet = 1; + + return net[subnet]->Pop(ouput_deviceID); + +} + +void LocalInterconnect::Advance(){ + + for (unsigned i = 0; i < n_subnets; ++i) { + net[i]->Advance(); + } + +} + +bool LocalInterconnect::Busy() const{ + + for (unsigned i = 0; i < n_subnets; ++i) { + if(net[i]->Busy()) + return true; + } + return false; +} + +bool LocalInterconnect::HasBuffer(unsigned deviceID, unsigned int size) const{ + + bool has_buffer = false; + + has_buffer = net[0]->Has_Buffer_In(deviceID, size); + + if ((n_subnets>1) && deviceID >= n_shader) // deviceID is memory node + has_buffer = net[1]->Has_Buffer_In(deviceID, size); + + return has_buffer; + +} + +void LocalInterconnect::DisplayStats() const{ + + cout<<"Req_Network_injected_packets_num = "<<net[0]->packets_num<<endl; + cout<<"Req_Network_cycles = "<<net[0]->cycles<<endl; + cout<<"Req_Network_injected_packets_per_cycle = "<<(float)(net[0]->packets_num) / (net[0]->cycles)<<endl; + cout<<"Req_Network_conflicts_per_cycle = "<<(float)(net[0]->conflicts) / (net[0]->cycles)<<endl; + cout<<"Req_Network_out_buffer_full_per_cycle = "<<(float)(net[0]->out_buffer_full) / (net[0]->cycles)<<endl; + + cout<<endl; + cout<<"Reply_Network_injected_packets_num = "<<net[1]->packets_num<<endl; + cout<<"ReplyNetwork_cycles = "<<net[1]->cycles<<endl; + cout<<"ReplyNetwork_injected_packets_per_cycle = "<<(float)(net[1]->packets_num) / (net[1]->cycles)<<endl; + cout<<"ReplyNetwork_conflicts_per_cycle = "<<(float)(net[1]->conflicts) / (net[1]->cycles)<<endl; + cout<<"ReplyNetwork_out_buffer_full_per_cycle = "<<(float)(net[1]->out_buffer_full) / (net[1]->cycles)<<endl; + +} + +void LocalInterconnect::DisplayOverallStats() const{ + +} + +unsigned LocalInterconnect::GetFlitSize() const{ + return LOCAL_INCT_FLIT_SIZE; +} + +void LocalInterconnect::DisplayState(FILE* fp) const{ + + fprintf(fp, "GPGPU-Sim uArch: ICNT:Display State: Under implementation\n"); +} + diff --git a/src/gpgpu-sim/local_interconnect.h b/src/gpgpu-sim/local_interconnect.h new file mode 100644 index 0000000..727a782 --- /dev/null +++ b/src/gpgpu-sim/local_interconnect.h @@ -0,0 +1,116 @@ +// Copyright (c) 2009-2013, Tor M. Aamodt, Dongdong Li, Ali Bakhoda +// The University of British Columbia +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// +// Redistributions of source code must retain the above copyright notice, this +// list of conditions and the following disclaimer. +// 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. +// 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. +// +// 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 HOLDER 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. + +#ifndef _LOCAL_INTERCONNECT_HPP_ +#define _LOCAL_INTERCONNECT_HPP_ + +#include <vector> +#include <queue> +#include <iostream> +#include <map> +using namespace std; + + +struct inct_config +{ + + //config for local interconnect + unsigned in_buffer_limit; + unsigned out_buffer_limit; + unsigned subnets; +}; + +class xbar_router { + +public: + xbar_router(unsigned router_id, unsigned n_shader, unsigned n_mem, unsigned m_in_buffer_limit, unsigned m_out_buffer_limit); + ~xbar_router(); + void Push(unsigned input_deviceID, unsigned output_deviceID, void* data, unsigned int size); + void* Pop(unsigned ouput_deviceID); + void Advance(); + bool Busy() const; + bool Has_Buffer_In(unsigned input_deviceID, unsigned size) const; + bool Has_Buffer_Out(unsigned output_deviceID, unsigned size) const; + + //some stats + unsigned long long cycles; + unsigned long long conflicts; + unsigned long long out_buffer_full; + unsigned long long packets_num; + +private: + struct Packet{ + Packet(void* m_data, unsigned m_output_deviceID) { + data = m_data; + output_deviceID = m_output_deviceID; + } + void* data; + unsigned output_deviceID; + }; + vector<queue<Packet> > in_buffers; + vector<queue<Packet> > out_buffers; + unsigned _n_shader, _n_mem, total_nodes; + unsigned in_buffer_limit, out_buffer_limit; + unsigned next_node; + unsigned m_id; + +}; + +class LocalInterconnect { +public: + LocalInterconnect(const struct inct_config& m_localinct_config); + ~LocalInterconnect(); + static LocalInterconnect* New(const struct inct_config& m_inct_config); + void CreateInterconnect(unsigned n_shader, unsigned n_mem); + + //node side functions + void Init(); + void Push(unsigned input_deviceID, unsigned output_deviceID, void* data, unsigned int size); + void* Pop(unsigned ouput_deviceID); + void Advance(); + bool Busy() const; + bool HasBuffer(unsigned deviceID, unsigned int size) const; + void DisplayStats() const; + void DisplayOverallStats() const; + unsigned GetFlitSize() const; + + void DisplayState(FILE* fp) const; + + +protected: + + const inct_config& m_inct_config; + + unsigned n_shader, n_mem; + unsigned n_subnets; + vector<xbar_router *> net; + +}; + +#endif + + diff --git a/src/gpgpu-sim/shader.cc b/src/gpgpu-sim/shader.cc index 3db988b..25a765a 100644 --- a/src/gpgpu-sim/shader.cc +++ b/src/gpgpu-sim/shader.cc @@ -1893,6 +1893,17 @@ void tensor_core::issue( register_set& source_reg ) pipelined_simd_unit::issue(source_reg); } +unsigned pipelined_simd_unit::get_active_lanes_in_pipeline(){ + active_mask_t active_lanes; + active_lanes.reset(); + if(!m_config->fast_execution_mode || active_insts_in_pipeline){ + for( unsigned stage=0; (stage+1)<m_pipeline_depth; stage++ ){ + if( !m_pipeline_reg[stage]->empty() ) + active_lanes|=m_pipeline_reg[stage]->get_active_mask(); + } + } + return active_lanes.count(); +} void ldst_unit::active_lanes_in_pipeline(){ unsigned active_count=pipelined_simd_unit::get_active_lanes_in_pipeline(); @@ -1946,13 +1957,13 @@ sp_unit::sp_unit( register_set* result_port, const shader_core_config *config,sh } dp_unit::dp_unit( register_set* result_port, const shader_core_config *config,shader_core_ctx *core) - : pipelined_simd_unit(result_port,config,config->max_sfu_latency,core) + : pipelined_simd_unit(result_port,config,config->max_dp_latency,core) { m_name = "DP "; } int_unit::int_unit( register_set* result_port, const shader_core_config *config,shader_core_ctx *core) - : pipelined_simd_unit(result_port,config,config->max_sp_latency,core) + : pipelined_simd_unit(result_port,config,config->max_int_latency,core) { m_name = "INT "; } @@ -1993,19 +2004,25 @@ pipelined_simd_unit::pipelined_simd_unit( register_set* result_port, const shade for( unsigned i=0; i < m_pipeline_depth; i++ ) m_pipeline_reg[i] = new warp_inst_t( config ); m_core=core; + active_insts_in_pipeline=0; } void pipelined_simd_unit::cycle() { if( !m_pipeline_reg[0]->empty() ){ m_result_port->move_in(m_pipeline_reg[0]); + assert(active_insts_in_pipeline > 0); + active_insts_in_pipeline--; + } + if(!m_config->fast_execution_mode || active_insts_in_pipeline){ + for( unsigned stage=0; (stage+1)<m_pipeline_depth; stage++ ) + move_warp(m_pipeline_reg[stage], m_pipeline_reg[stage+1]); } - for( unsigned stage=0; (stage+1)<m_pipeline_depth; stage++ ) - move_warp(m_pipeline_reg[stage], m_pipeline_reg[stage+1]); if( !m_dispatch_reg->empty() ) { if( !m_dispatch_reg->dispatch_delay()){ int start_stage = m_dispatch_reg->latency - m_dispatch_reg->initiation_interval; move_warp(m_pipeline_reg[start_stage],m_dispatch_reg); + active_insts_in_pipeline++; } } occupied >>=1; @@ -2981,8 +2998,61 @@ unsigned int shader_core_config::max_cta( const kernel_info_t &k ) const return result; } +void shader_core_config::set_pipeline_latency() { + + if(fast_execution_mode) { + //calculate the max latency based on the input + + unsigned int_latency[5]; + unsigned fp_latency[5]; + unsigned dp_latency[5]; + unsigned sfu_latency; + unsigned tensor_latency; + + /* + * [0] ADD,SUB + * [1] MAX,Min + * [2] MUL + * [3] MAD + * [4] DIV + */ + sscanf(opcode_latency_int, "%u,%u,%u,%u,%u", + &int_latency[0],&int_latency[1],&int_latency[2], + &int_latency[3],&int_latency[4]); + sscanf(opcode_latency_fp, "%u,%u,%u,%u,%u", + &fp_latency[0],&fp_latency[1],&fp_latency[2], + &fp_latency[3],&fp_latency[4]); + sscanf(opcode_latency_dp, "%u,%u,%u,%u,%u", + &dp_latency[0],&dp_latency[1],&dp_latency[2], + &dp_latency[3],&dp_latency[4]); + sscanf(opcode_latency_sfu, "%u", + &sfu_latency); + sscanf(opcode_latency_tensor, "%u", + &tensor_latency); + + //all div operation are executed on sfu + //assume that the max latency are dp div or normal sfu_latency + max_sfu_latency = std::max(dp_latency[4],sfu_latency); + //assume that the max operation has the max latency + max_sp_latency = fp_latency[1]; + max_int_latency = int_latency[1]; + max_dp_latency = dp_latency[1]; + max_tensor_core_latency = tensor_latency; + } else { + max_sfu_latency = 512; + max_sp_latency = 32; + max_int_latency = 32; + max_dp_latency = 512; + max_tensor_core_latency = 64; + } + +} + void shader_core_ctx::cycle() { + if(m_config->fast_execution_mode && !isactive() && get_not_completed() == 0) + return; + m_stats->shader_cycles[m_sid]++; writeback(); execute(); diff --git a/src/gpgpu-sim/shader.h b/src/gpgpu-sim/shader.h index 9abd223..2204697 100644 --- a/src/gpgpu-sim/shader.h +++ b/src/gpgpu-sim/shader.h @@ -55,7 +55,6 @@ #include "traffic_breakdown.h" - #define NO_OP_FLAG 0xFF /* READ_PACKET_SIZE: @@ -1073,16 +1072,8 @@ public: //modifiers virtual void cycle(); virtual void issue( register_set& source_reg ); - virtual unsigned get_active_lanes_in_pipeline() - { - active_mask_t active_lanes; - active_lanes.reset(); - for( unsigned stage=0; (stage+1)<m_pipeline_depth; stage++ ){ - if( !m_pipeline_reg[stage]->empty() ) - active_lanes|=m_pipeline_reg[stage]->get_active_mask(); - } - return active_lanes.count(); - } + virtual unsigned get_active_lanes_in_pipeline(); + virtual void active_lanes_in_pipeline() = 0; /* virtual void issue( register_set& source_reg ) @@ -1113,6 +1104,9 @@ protected: warp_inst_t **m_pipeline_reg; register_set *m_result_port; class shader_core_ctx *m_core; + + unsigned active_insts_in_pipeline; + }; class sfu : public pipelined_simd_unit @@ -1413,10 +1407,8 @@ struct shader_core_config : public core_config } max_warps_per_shader = n_thread_per_shader/warp_size; assert( !(n_thread_per_shader % warp_size) ); - max_sfu_latency = 512; - max_sp_latency = 32; - - max_tensor_core_latency = 64; + + set_pipeline_latency(); m_L1I_config.init(m_L1I_config.m_config_string,FuncCachePreferNone); m_L1T_config.init(m_L1T_config.m_config_string,FuncCachePreferNone); @@ -1432,6 +1424,7 @@ struct shader_core_config : public core_config unsigned sid_to_cluster( unsigned sid ) const { return sid / n_simt_cores_per_cluster; } unsigned sid_to_cid( unsigned sid ) const { return sid % n_simt_cores_per_cluster; } unsigned cid_to_sid( unsigned cid, unsigned cluster_id ) const { return cluster_id*n_simt_cores_per_cluster + cid; } + void set_pipeline_latency(); // data char *gpgpu_shader_core_pipeline_opt; @@ -1506,7 +1499,9 @@ struct shader_core_config : public core_config bool sub_core_model; unsigned max_sp_latency; + unsigned max_int_latency; unsigned max_sfu_latency; + unsigned max_dp_latency; unsigned max_tensor_core_latency; unsigned n_simt_cores_per_cluster; @@ -1524,6 +1519,7 @@ struct shader_core_config : public core_config bool gpgpu_concurrent_kernel_sm; bool adpative_volta_cache_config; + bool fast_execution_mode; }; struct shader_core_stats_pod { diff --git a/src/gpgpusim_entrypoint.cc b/src/gpgpusim_entrypoint.cc index 270bace..9e2bfa2 100644 --- a/src/gpgpusim_entrypoint.cc +++ b/src/gpgpusim_entrypoint.cc @@ -222,10 +222,12 @@ gpgpu_sim *gpgpu_ptx_sim_init_perf() read_parser_environment_variables(); option_parser_t opp = option_parser_create(); - icnt_reg_options(opp); - g_the_gpu_config.reg_options(opp); // register GPU microrachitecture options ptx_reg_options(opp); ptx_opcocde_latency_options(opp); + + icnt_reg_options(opp); + g_the_gpu_config.reg_options(opp); // register GPU microrachitecture options + option_parser_cmdline(opp, sg_argc, sg_argv); // parse configuration options fprintf(stdout, "GPGPU-Sim: Configuration options:\n\n"); option_parser_print(opp, stdout); |