Hi I am currently using Simpoint to make some application running checkpoints on SPEC2006. According to some guidance online, my steps are as following:
1. Running benchmark on gem5 in SE mode using options “--simpoint-profile --simpoint-interval 100000” to generate simpoint.bb.gz file 2. Running Simpoint options like this to generate test.simpoint and test.weight “-loadFVFile simpoint.bb.gz -maxK 30 -saveSimpoints test.simpoint -saveSimpointWeights test.weight -inputVectorsGzipped” 3. Rerun gem5 with options: “--take-simpoint-checkpoint=./445.gobmk-simpoint/test.simpoint,./445.gobmk-simpoint/test.weight,1000000,0 ” to generate checkpoint like: “cpt.simpoint_00_inst_1000000_weight_0.193939_interval_1000000_warmup_0” 4. Restore using checkpoint generate by step 3 using options: “--restore-simpoint-checkpoint -r 2 --checkpoint-dir ./445.gobmk-simpoint \\“ My problem is I can run Step1-3 successfully and checkpoints of the benchmark is generated. However, when I try running Step4 with whichever checkpoint, the simulation process just terminate after execution of ONLY 1 INSTRUCTION, here’s the output: ``` Resuming from ./445.gobmk-simpoint/cpt.simpoint_04_inst_90000000_weight_0.018182_interval_1000000_warmup_0 ``` ``` Resuming from SimPoint #4, start_inst:90000000, weight:0.018182, interval:1000000, warmup:0 ``` ``` Global frequency set at 1000000000000 ticks per second ``` ``` warn: No dot file generated. Please install pydot to generate the dot file and pdf. ``` ``` src/mem/dram_interface.cc:690: warn: DRAM device capacity (8192 Mbytes) does not match the address range assigned (512 Mbytes) ``` ``` src/arch/riscv/isa.cc:275: info: RVV enabled, VLEN = 256 bits, ELEN = 64 bits ``` ``` src/base/statistics.hh:279: warn: One of the stats is a legacy stat. Legacy stat is a stat that does not belong to any statistics::Group. Legacy stat is deprecated. ``` ``` system.remote_gdb: Listening for connections on port 7003 ``` ``` src/sim/process.cc:396: warn: Checkpoints for pipes, device drivers and sockets do not work. ``` ``` Switch at curTick count:10000 ``` ``` src/sim/simulate.cc:199: info: Entering event queue @ 58886401000. Starting simulation... ``` ``` Switched CPUS @ tick 58886401500 ``` ``` switching cpus ``` ``` src/sim/simulate.cc:199: info: Entering event queue @ 58886401500. Starting simulation... ``` ``` src/sim/power_state.cc:105: warn: PowerState: Already in the requested power state, request ignored ``` ``` src/sim/simulate.cc:199: info: Entering event queue @ 58886402000. Starting simulation... ``` ``` Warmed up! Dumping and resetting stats! ``` ``` src/sim/simulate.cc:199: info: Entering event queue @ 58886402500. Starting simulation... ``` Exiting @ tick 58886411000 because simulate() limit reached As shown above, simulation ENCOUNTER EXITEVENT immediately after entering eventq and stats.txt shows only 1 INSTRUCTION is done. My Question is: Is there somthing wrong about my procedure or Did I do something wrong? Im running under gem5v23.1, Simpoint 3.2 in RISCV arch.
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