PhD Student
Email: lorien.lopez@unizar.es
Address: Lab L2.08 c/Mariano Esquillor SN Edificio Ada Byron, Zaragoza (Spain)
ABOUT ME
My research centers on accelerating scientific applications by developing novel algorithms and optimizing the usage of hardware resources, primarily focusing on vectorization and parallelism. Currently, I am working on a new algorithm for constrained Molecular Dynamics alongside the porting and acceleration of genomics applications on Arm and RISC-V platforms.
I am currently collaborating with the High-Performance Domain-Specific Architectures group at the Barcelona Supercomputing Center (BSC).
PUBLICATIONS
2023
Mikkelsen, Carl Christian Kjelgaard; López-Villellas, Lorién; García-Risueño, Pablo
How Accurate Does Newton Have to Be? Proceedings Article
In: Wyrzykowski, Roman; Dongarra, Jack; Deelman, Ewa; Karczewski, Konrad (Ed.): Parallel Processing and Applied Mathematics, pp. 3–15, Springer International Publishing, Cham, 2023, ISBN: 978-3-031-30442-2.
@inproceedings{10.1007/978-3-031-30442-2_1,
title = {How Accurate Does Newton Have to Be?},
author = {Carl Christian Kjelgaard Mikkelsen and Lorién López-Villellas and Pablo García-Risueño},
editor = {Roman Wyrzykowski and Jack Dongarra and Ewa Deelman and Konrad Karczewski},
isbn = {978-3-031-30442-2},
year = {2023},
date = {2023-01-01},
booktitle = {Parallel Processing and Applied Mathematics},
pages = {3–15},
publisher = {Springer International Publishing},
address = {Cham},
abstract = {We analyze the convergence of quasi-Newton methods in exact and finite precision arithmetic. In particular, we derive an upper bound for the stagnation level and we show that any sufficiently exact quasi-Newton method will converge quadratically until stagnation. In the absence of sufficient accuracy, we are likely to retain rapid linear convergence. We confirm our analysis by computing square roots and solving bond constraint equations in the context of molecular dynamics. We briefly discuss implications for parallel solvers.},
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pubstate = {published},
tppubtype = {inproceedings}
}
López-Villellas, Lorién; Mikkelsen, Carl Christian Kjelgaard; Galano-Frutos, Juan José; Marco-Sola, Santiago; Alastruey-Benedé, Jesús; Ibáñez, Pablo; Moretó, Miquel; Sancho, Javier; García-Risueño, Pablo
Accurate and efficient constrained molecular dynamics of polymers using Newton’s method and special purpose code Journal Article
In: Computer Physics Communications, vol. 288, pp. 108742, 2023.
@article{lopez2023accurate,
title = {Accurate and efficient constrained molecular dynamics of polymers using Newton's method and special purpose code},
author = {Lorién López-Villellas and Carl Christian Kjelgaard Mikkelsen and Juan José Galano-Frutos and Santiago Marco-Sola and Jesús Alastruey-Benedé and Pablo Ibáñez and Miquel Moretó and Javier Sancho and Pablo García-Risueño},
year = {2023},
date = {2023-01-01},
journal = {Computer Physics Communications},
volume = {288},
pages = {108742},
publisher = {North-Holland},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
López-Villellas, Lorién; Pineda-Sánchez, Esteve; Badouh, Asaf; Marco-Sola, Santiago; Ibáñez, Pablo; Alastruey-Benedé, Jesús; Moretó, Miquel
RISC-V for Genome Data Analysis: Opportunities and Challenges Proceedings Article
In: 2023 38th Conference on Design of Circuits and Integrated Systems (DCIS), pp. 1–6, 2023.
@inproceedings{lopez2023risc,
title = {RISC-V for Genome Data Analysis: Opportunities and Challenges},
author = {Lorién López-Villellas and Esteve Pineda-Sánchez and Asaf Badouh and Santiago Marco-Sola and Pablo Ibáñez and Jesús Alastruey-Benedé and Miquel Moretó},
year = {2023},
date = {2023-01-01},
booktitle = {2023 38th Conference on Design of Circuits and Integrated Systems (DCIS)},
pages = {1–6},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
2022
Mikkelsen, Carl Christian Kjelgaard; López-Villellas, Lorién; García-Risueño, Pablo
How Accurate Does Newton Have to Be? Proceedings Article
In: International Conference on Parallel Processing and Applied Mathematics, pp. 3–15, Springer International Publishing Cham 2022.
@inproceedings{kjelgaard2022accurate,
title = {How Accurate Does Newton Have to Be?},
author = {Carl Christian Kjelgaard Mikkelsen and Lorién López-Villellas and Pablo García-Risueño},
year = {2022},
date = {2022-01-01},
booktitle = {International Conference on Parallel Processing and Applied Mathematics},
pages = {3–15},
organization = {Springer International Publishing Cham},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
0000
Oliete-Escuín, Noelia; Bigas-Soldevila, Arnau; Rodas, Narcís; Aguilera, Albert; Ahmad, Sajjad; Balkind, Jonathan; Carril, Xavier; Doblas, Max; Díaz, Iván; Figueras, Roger; Foroodnia, Alireza; Fuget, Cesar; Genovese, Ignacio; Gilabert, Raúl; Haghi, Abbas; Kropotov, Alexander; Leyva, Neiel; Lostes-Cazorla, Oscar; López-Villellas, Lorién; Million, Davy; Monemi, Alireza; Pérez, S.; Rodríguez, Juan Antonio; Soria-Pardos, Víctor; Salami, Behzad; Moll, Francesc; Palomar, Oscar; Moretó, Miquel; Alvarez, Lluc
REPTILES: Repeated Tiles of Sargantana, a RISC-V multicore based on OpenPiton Proceedings Article
In: 0000.
@inproceedings{OlieteEscunREPTILESRT,
title = {REPTILES: Repeated Tiles of Sargantana, a RISC-V multicore based on OpenPiton},
author = {Noelia Oliete-Escuín and Arnau Bigas-Soldevila and Narcís Rodas and Albert Aguilera and Sajjad Ahmad and Jonathan Balkind and Xavier Carril and Max Doblas and Iván Díaz and Roger Figueras and Alireza Foroodnia and Cesar Fuget and Ignacio Genovese and Raúl Gilabert and Abbas Haghi and Alexander Kropotov and Neiel Leyva and Oscar Lostes-Cazorla and Lorién López-Villellas and Davy Million and Alireza Monemi and S. Pérez and Juan Antonio Rodríguez and Víctor Soria-Pardos and Behzad Salami and Francesc Moll and Oscar Palomar and Miquel Moretó and Lluc Alvarez},
url = {https://api.semanticscholar.org/CorpusID:283146120},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}