ramulator | Extensible DRAM Simulator , with built-in support

Ramulator requires a C++11 compiler (e.g., clang++, g++-5). By default, gem5 uses the atomic CPU and uses atomic memory accesses, i.e. a detailed memory model like ramulator is not really used. To actually run gem5 in timing mode, a CPU type need to be specified by command line parameter --cpu-type. e.g. --cpu-type=timing.
Memory Trace Driven $ cd ramulator $ make -j $ ./ramulator configs/DDR3-config.cfg --mode=dram dram.trace Simulation done. Statistics written to DDR3.stats # NOTE: dram.trace is a very short trace file provided only as an example. $ ./ramulator configs/DDR3-config.cfg --mode=dram --stats my_output.txt dram.trace Simulation done. Statistics written to my_output.txt # NOTE: optional --stats flag changes the statistics output filename
CPU Trace Driven $ cd ramulator $ make -j $ ./ramulator configs/DDR3-config.cfg --mode=cpu cpu.trace Simulation done. Statistics written to DDR3.stats # NOTE: cpu.trace is a very short trace file provided only as an example. $ ./ramulator configs/DDR3-config.cfg --mode=cpu --stats my_output.txt cpu.trace Simulation done. Statistics written to my_output.txt # NOTE: optional --stats flag changes the statistics output filename
gem5 Driven Requires SWIG 2.0.12+, gperftools (libgoogle-perftools-dev package on Ubuntu) $ hg clone http://repo.gem5.org/gem5-stable $ cd gem5-stable $ hg update -c 10231 # Revert to stable version from 5/31/2014 (10231:0e86fac7254c) $ patch -Np1 --ignore-whitespace < /path/to/ramulator/gem5-0e86fac7254c-ramulator.patch $ cd ext/ramulator $ mkdir Ramulator $ cp -r /path/to/ramulator/src Ramulator # Compile gem5 # Run gem5 with `--mem-type=ramulator` and `--ramulator-config=configs/DDR3-config.cfg`