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{Seminar} @ CDS: 13th January : “An Incompressible CFD Solver for Multi-GPU Platforms”

13 Jan @ 4:00 PM -- 5:00 PM

Department of Computational and Data Sciences

Department Seminar


SPEAKER     :  Dr.  Somnath Roy

TITLE            : “An Incompressible CFD Solver for Multi-GPU Platforms.”

Date & Time :  January 13, 2023, 04:00 PM.

Venue              : #102, CDS Seminar Hall.





The Graphical Processing Units (GPUs) help in considerably reducing the computational time with reduced energy costs. GPUs provide high number of FLOPS and they potentially offer the most efficient architecture to carry out large-scale calculations for scientific problems. However, in order to get desired scalability in GPU system, programmer needs to efficiently utilize different on-chip and off-chip memory components. Furthermore, execution efficiency depends on issues like choosing optimum block size, eliminating warp divergence etc. Therefore, efficient CUDA programming require an in-depth knowledge of GPU hardware, whereas programming standards like OpenACC can help in obtaining optimized parallelization of legacy codes through incremental changes. I will discuss the steps for optimization of an incompressible computational fluid dynamics (CFD) solver for multi-GPU platforms using OpenACC. An immersed boundary technique will be demonstrated with fully parallelized search algorithm in connection with flow over moving and deformable bodies. Application problems in biofluidics and micro-flyers will be shown in which around 100 times speed-up is obtained through GPU acceleration.



Dr. Somnath Roy is currently an Associate Professor in the Department of Mechanical Engineering jointly with Centre for Computational and Data Sciences at Indian Institute of Technology Kharagpur. He completed his B.E. from Jadavpur University, M. Tech. from IIT Kanpur and PhD from Louisiana State University. He worked as a Research Associate and Visiting Faculty at Louisiana State University and then joined IIT Patna on February, 2011. In 2016, he moved to IIT Kharagpur. His research interest involves Computational Fluid Dynamics, Mixing, Heat Transfer, Turbulence, Micro-Air Vehicles, Biofluidics and High Performance Computing. He is PI for the NSM nodal centre for training in HPC and AI at IIT Kharagpur.


Host Faculty: Prof. Sathish Vadhiyar

                                                                             ALL ARE WELCOME


13 Jan
4:00 PM -- 5:00 PM
Event Category:


Room No: 102 (Seminar Hall of CDS)