Error running ramulator2

[beneslami]

Hi,
I try to run the simulator with Ramulator2 but I get this error:

root@6570311702cb:/workspace/ONNXim# ./build/bin/Simulator --config ./configs/systolic_ws_128x128_c4_booksim2_tpuv4.json --model ./example/models_list.json 
[2026-04-23 09:43:35.719] [info] CPU 0: Partition 0
[2026-04-23 09:43:35.719] [info] CPU 1: Partition 0
[2026-04-23 09:43:35.719] [info] CPU 2: Partition 0
[2026-04-23 09:43:35.719] [info] CPU 3: Partition 0
[2026-04-23 09:43:35.719] [info] Running in default mode
[2026-04-23 09:43:35.719] [info] Simulator Configuration:
[2026-04-23 09:43:35.719] [info] [Core 0] Systolic Array Throughput: 131072 GFLOPS, Spad size: 32768 KB, Accumulator size: 4096 KB
[2026-04-23 09:43:35.719] [info] [Core 1] Systolic Array Throughput: 131072 GFLOPS, Spad size: 32768 KB, Accumulator size: 4096 KB
[2026-04-23 09:43:35.719] [info] [Core 2] Systolic Array Throughput: 131072 GFLOPS, Spad size: 32768 KB, Accumulator size: 4096 KB
[2026-04-23 09:43:35.719] [info] [Core 3] Systolic Array Throughput: 131072 GFLOPS, Spad size: 32768 KB, Accumulator size: 4096 KB
[2026-04-23 09:43:35.719] [info] DRAM Bandwidth 614 GB/s
[2026-04-23 09:43:35.719] [info] Ramulator2 config: /workspace/ONNXim/configs/../configs/ramulator2_configs/HBM2.yaml
terminate called after throwing an instance of 'Ramulator::InitializationError'
  what():  Trying to create an implementation "GEM5" of interface "Frontend", but the implementation is not registered!
Aborted (core dumped)

It's obvious that it is related to the frontend (gem5_frontend.cpp). It looks like this file is not compiled during compilation.
Any solution for this problem ?

Thanks

[HamHyungkyu]

Hi @beneslami,

Thanks for reaching out and for your interest in ONNXim!

I couldn't reproduce this on my side. Could you try the recommended setup in the Dockerfile (ubuntu:20.04 + gcc-10 + conan 1.57.0)?

Also please make sure the extern/ramulator2 submodule is at commit 0d06301 (git submodule update --recursive --init) — gem5_frontend.cpp lives there and gets compiled into libramulator.so via the RAMULATOR_REGISTER_IMPLEMENTATION macro, which is what registers the GEM5 frontend at load time.

Let us know how it goes!