lcpq-codes/content/qmc-qhem/_index.md

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---
title: "QMC=Chem"
date: 2020-07-09T17:50:54+02:00
draft: false
---
Web page: http://qmcchem.ups-tlse.fr
QMC=Chem is a massively parallel quantum Monte Carlo program, developed using [IRPF90](https://www.lcpq.ups-tlse.fr/codes/irpf90/), [EZFIO](https://www.lcpq.ups-tlse.fr/codes/ezfio/). Parallelism is handled in OCaml, and network communications are performed with the [ØMQ](https://zeromq.org/) library, with the [F77_ZMQ](https://www.lcpq.ups-tlse.fr/codes/f77_zmq/) binding.
## Features
- Asynchronous design. Tested with up to 76 800 cores (4 800 nodes)
- Fault tolerance
- Very low memory footprint/core
- Highly Optimized for Intel processors (AVX and AVX2)
- Can handle ~100 000 Slater determinants
- Works with Xeon Phi
## People involved
- Thomas Applencourt
- Thomas Bouabça
- Michel Caffarel
- Emmanuel Giner
- Angélique Pagès
- Benjamin Sánchez Lengeling
- Anthony Scemama
## Related Papers
[QMC=Chem: A Quantum Monte Carlo Program for Large-Scale Simulations in Chemistry at the Petascale Level and beyond](http://link.springer.com/chapter/10.1007%2F978-3-642-38718-0_14)
A. Scemama, M. Caffarel, E. Oseret and W. Jalby, High Performance Computing for Computational Science - VECPAR 2012, pages 118-127, Springer Berlin Heidelberg, 2013
[Quantum Monte Carlo for large chemical systems: Implementing efficient strategies for petascale platforms and beyond](http://onlinelibrary.wiley.com/doi/10.1002/jcc.23216)
A. Scemama, M. Caffarel, E. Oseret and W. Jalby, Journal of Computational Chemistry, 34:11(938--951), 2013