Improved parallelization techniques for the density matrix renormalization group

Julián Rincón; D. J. García; K. Hallberg

doi:10.1016/j.cpc.2010.03.018

Improved parallelization techniques for the density matrix renormalization group

Julián Rincón, D. J. García, K. Hallberg

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A distributed-memory parallelization strategy for the density matrix renormalization group is proposed for cases where correlation functions are required. This new strategy has substantial improvements with respect to previous works. A scalability analysis shows an overall serial fraction of 9.4% and an efficiency of around 60% considering up to eight nodes. Sources of possible parallel slowdown are pointed out and solutions to circumvent these issues are brought forward in order to achieve a better performance.

Original language	English (US)
Pages (from-to)	1346-1351
Number of pages	6
Journal	Computer Physics Communications
Volume	181
Issue number	8
DOIs	https://doi.org/10.1016/j.cpc.2010.03.018
State	Published - Aug 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Hardware and Architecture
General Physics and Astronomy

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10.1016/j.cpc.2010.03.018

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abstract = "A distributed-memory parallelization strategy for the density matrix renormalization group is proposed for cases where correlation functions are required. This new strategy has substantial improvements with respect to previous works. A scalability analysis shows an overall serial fraction of 9.4% and an efficiency of around 60% considering up to eight nodes. Sources of possible parallel slowdown are pointed out and solutions to circumvent these issues are brought forward in order to achieve a better performance.",

author = "Juli{\'a}n Rinc{\'o}n and Garc{\'i}a, {D. J.} and K. Hallberg",

year = "2010",

month = aug,

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AU - García, D. J.

AU - Hallberg, K.

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JO - Computer Physics Communications

JF - Computer Physics Communications

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Improved parallelization techniques for the density matrix renormalization group

Abstract

All Science Journal Classification (ASJC) codes

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