VANS is a cycle-level NVRAM simulator. Its performance is initially calibrated to match the Intel Optane Persistent Memory. But you can reconfigure VANS to model other NVRAM systems.

VANS is part of our MICRO 2020 paper.

VANS is written in C++ 17, so it requires gcc 7.0 / clang 8.0 or newer version. VANS is developed and tested with gcc 10.2.0.

To configure and build VANS:

$ mkdir build
$ cd build
$ cmake ..
$ make -j

This will compile VANS and generate the binaries in bin dir.

To run VANS with some sample traces:

$ cd bin
# Create a new directory for VANS output, or VANS will create it for you
# See configuration file 'dump' section 'path' value
$ mkdir vans_dump
# Read config file and execute a trace
$ ./vans -c ../config/vans.cfg -t ../tests/sample_traces/read.trace

We also provide a set of automated tests (please read tests/precision/README.md to setup the environments before you run these tests):

$ python3 tests/precision/precision_test.py tests/precision

We heavily refactor and rewrite the entire VANS code. These features are currently missing/not-tested, and we will add them soon:

1. Memory mode

@inproceedings{LENS-VANS,
  author={Zixuan Wang and Xiao Liu and Jian Yang and Theodore Michailidis and Steven Swanson and Jishen Zhao},
  booktitle={2020 53rd Annual IEEE/ACM International Symposium on Microarchitecture (MICRO)},
  title={Characterizing and Modeling Non-Volatile Memory Systems},
  year={2020},
  pages={496-508},
  doi={10.1109/MICRO50266.2020.00049}
}