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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

OpenMP, OpenMP/MPI, and CUDA/MPI C programs for solving the time-dependent dipolar Gross-Pitaevskii equation

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Loncar, Vladimir ; Young-S, Luis E. ; Skrbic, Srdjan ; Muruganandam, Paulsamy ; Adhikari, Sadhan K. ; Balaz, Antun
Total Authors: 6
Document type: Journal article
Source: COMPUTER PHYSICS COMMUNICATIONS; v. 209, p. 190-196, DEC 2016.
Web of Science Citations: 20

We present new versions of the previously published C and CUDA programs for solving the dipolar Gross-Pitaevskii equation in one, two, and three spatial dimensions, which calculate stationary and non stationary solutions by propagation in imaginary or real time. Presented programs are improved and parallelized versions of previous programs, divided into three packages according to the type of parallelization. First package contains improved and threaded version of sequential C programs using OpenMP. Second package additionally parallelizes three-dimensional variants of the OpenMP programs using MPI, allowing them to be run on distributed-memory systems. Finally, previous three-dimensional CUDA-parallelized programs are further parallelized using MPI, similarly as the OpenMP programs. We also present speedup test results obtained using new versions of programs in comparison with the previous sequential C and parallel CUDA programs. The improvements to the sequential version yield a speedup of 1.1-1.9, depending on the program. OpenMP parallelization yields further speedup of 2-12 on a 16-core workstation, while OpenMP/MPI version demonstrates a speedup of 11.5-16.5 on a computer cluster with 32 nodes used. CUDA/MPI version shows a speedup of 9-10 on a computer cluster with 32 nodes. (AU)

FAPESP's process: 14/16363-8 - Novel scenarios in dipolar Bose-Einstein condensates
Grantee:Luis Ever Young Silva
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 12/00451-0 - Study of properties of Bose-Einstein Condensate: dipolar atoms and condensate of fermions
Grantee:Sadhan Kumar Adhikari
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 12/21871-7 - Study on properties of dipolar Bose-Einstein Condensates
Grantee:Luis Ever Young Silva
Support Opportunities: Scholarships in Brazil - Post-Doctorate