Want to learn more about TREX? On this page, you can find our archive of informative publication materials: reports, deliverables, presentations and articles from experts within the TREX community speaking about various TREX related topics. All the public materials published by TREX partners are available on the TREX Zenodo Community.

Conference paper

Building Quantum Monte Carlo and High-Performance Simulations: Insights from the TREX Symposium

Pittonet, Sara; Tognetti, Ruben; Abergas-Arteza, Julie; Zazzeri, Niccolò

From 5 to 9 February 2024 the TREX Center of Excellence in Exascale Computing organised the "Bridging Quantum Monte Carlo and High-Performance Simulations" Symposium in Esch-sur-Alzette, Luxembourg. Experts from across Europe and oversea converged to celebrate the project's achievements, discuss ongoing challenges and latest developments in QMC methods, also in relation to high-performance computing (HPC). ...Read more
48 Views27 Downloads

Quantum symmetrization transition in superconducting sulfur hydride from quantum Monte Carlo and path integral molecular dynamics

Romain Taureau, Marco Cherubini, Tommaso Morresi, Michele Casula ARXIV

TREX Symposium: Bridging Quantum Monte Carlo and High-Performance Simulations

Filippi, Claudia; Scemama, Anthony; Casula, Michele; Rupp, Matthias; Alavi, Ali; Jalby, William; Auweter, Axel; Hapka, Michał; Stich, Ivan; Nakano, Kosuke

The TREX Center of Excellence in Exascale Computing organises the "Bridging Quantum Monte Carlo and High-Performance Simulations" Symposium, took place from February 5 to 9, 2024, in Esch-sur-Alzette, Luxembourg. ...Read more
146 Views249 Downloads
Project deliverable

D5.4 – Datasets made available for benchmarking and ML modelling

Pernal, Katarzyna; Casula, Michele; Rupp, Matthias; Hapka, Michal

This report documents the creation of four datasets for modelling and benchmarking computational methods. They are dedicated to further investigations of systems, which have been used for demonstrations in work package (WP) 5, i.e. hydrogen under pressure, protonated water hexamer and molecular interactions in excited-state organic dimers. The datasets have been developed in the groups of Michele Casula (CNRS), Matthias Rupp (LIST), Kasia Pernal (TUL), and Michal Hapka (University of Warsaw). ...Read more
43 Views5 Downloads
Project deliverable

D5.2 – Report on machine learning results delivered for water systems

Rupp, Matthias; Casula, Michele

The TREX EU Centre of Excellence investigates implementations of Quantum Monte Carlo (QMC) calculations optimized for exascale high-performance computing. These calculations are high-accuracy quantum-chemical and materials simulations that are inherently parallelizable and computationally demanding. Thus, they are uniquely positioned to utilize and explore the upcoming exascale supercomputer architectures. TREX focuses on the development and promotion of an open-source, high-performance software platform of inter-operable flagship codes and exascale-ready libraries. ...Read more
32 Views4 Downloads
Project deliverable

D3.5 – Report on the reduction of numerical precision for computation and I/O

de Oliveira Castro, Pablo; Coppens, Francois; Delval, Aur´elien; Petit, Eric

This deliverable adresses the critical concern of floating-point accuracy in numerical simulations and computation-intensive codes, emphasizing the need for early detection and resolution of numerical bugs. It introduces Verificarlo-CI, a continuous integration workflow that monitors and optimizes numerical accuracy during code development within QMCkl. It also details the design of optimized versions of Sherman-Morrison-Woodbury (SMWB) kernels and show they achieve a good tradeoff between accuracy and performance. The report also explores the benefits of mixed precision in the CHAMP code. ...Read more
40 Views4 Downloads
Project deliverable

D7.4 – Communication, dissemination, and stakeholders engagement interim report, and user uptake updates

Pittonet, Sara; Abergas-Arteza, Julie; Mariani, Jacopo; Abrusci, Gianfranco; Stich, Ivan; Sorella, Sandro

The document is a direct output of WP7 whose key role in the project is to raise awareness about project results, disseminate major outputs, and engage key stakeholders. The aim of this document is twofold: ...Read more
31 Views20 Downloads
Project deliverable

D1.4 – Report on final release of open-source human-readable implementation of the libraries

Scemama, Anthony

The QMCkl library represents a significant advancement in the field of quantum chemistry, particularly in Quantum Monte Carlo (QMC) simulations. Distributed under the 3-clause BSD license, the library aims for broad adoption across both academic and commercial platforms by offering a permissive opensource licensing model. The development methodology of QMCkl is rooted in literate programming principles, ensuring a seamless integration of documentation and code. The library’s API is designed in C, ensuring cross-language compatibility and universal adaptability. ...Read more
36 Views7 Downloads
Project deliverable

D2.6 – Report on Final Release of TREX Platform with Interoperable Flagship Codes

Scemama, Anthony; Filippi, Claudia; Shinde, Ravindra; Landinez Borda, Edgar; Nakano, Kousuke; Kohulák, Ot(t)o; Hapka, Michal; Pernal, Katarzyna; Alavi, Ali; Lopez Rios, Pablo

The TREX project is a collaborative initiative aimed at enhancing Quantum Monte Carlo (QMC) simulations by developing and optimizing flagship codes tailored for exascale computing. This report provides a comprehensive overview of the advancements and achievements under Work Package (WP)2, Code Modularization and Interfacing, and highlights its essential role in accomplishing the TREX project’s primary objectives. The TREX project focuses on three key goals: ...Read more
45 Views4 Downloads

QMC Hands-on Summer Workshop 20-23 June 2022 Presentations

Filippi, Claudia; Ravindra, Shinde; Scemama, Anthony; Chilkuri, Vijay Gopal; Nakano, Kosuke

The QMC Hands-on Summer Workshop was held from 20 to 23 June 2022.  The video recording of the event is available here.  Hands-on tutorials are available on the following links: ...Read more
213 Views113 Downloads