SC13 Home > SC13 Schedule > SC13 Presentation - Solving the Compressible Navier-Stokes Equations on up to 1.97 Million Cores and 4.1 Trillion Grid Points

SCHEDULE: NOV 16-22, 2013

When viewing the Technical Program schedule, on the far righthand side is a column labeled "PLANNER." Use this planner to build your own schedule. Once you select an event and want to add it to your personal schedule, just click on the calendar icon of your choice (outlook calendar, ical calendar or google calendar) and that event will be stored there. As you select events in this manner, you will have your own schedule to guide you through the week.

Solving the Compressible Navier-Stokes Equations on up to 1.97 Million Cores and 4.1 Trillion Grid Points

SESSION: Extreme-Scale Applications

EVENT TYPE: Papers

TIME: 2:00PM - 2:30PM

SESSION CHAIR: Michael A. Heroux

AUTHOR(S):Ivan Bermejo-Moreno, Julien Bodart, Johan Larsson, Blaise Barney, Joseph Nichols, Steve Jones

ROOM:201/203

ABSTRACT:
We present weak and strong scaling studies as well as performance analyses of the Hybrid code, a finite-difference solver of the compressible Navier-Stokes equations on structured grids used for the direct numerical simulation of isotropic turbulence and its interaction with shock waves. Parallelization is achieved through MPI, emphasizing the use of non-blocking communication with concurrent computation. The simulations, scaling and performance studies were done on the Sequoia, Vulcan and Vesta Blue Gene/Q systems, the first two accounting for a total of 1,966,080 cores when combined. The maximum number of grid points simulated was 4.12 trillion, with a memory usage of approximately 1.6 PB. We discuss the use of hyperthreading, which significantly improves the parallel performance of the code on this architecture.

Chair/Author Details:

Michael A. Heroux (Chair) - Sandia National Laboratories

Ivan Bermejo-Moreno - Stanford University

Julien Bodart - Stanford University

Johan Larsson - University of Maryland

Blaise Barney - Lawrence Livermore National Laboratory

Joseph Nichols - Stanford University

Steve Jones - Stanford University

Add to iCal  Click here to download .ics calendar file

Add to Outlook  Click here to download .vcs calendar file

Add to Google Calendarss  Click here to add event to your Google Calendar

The full paper can be found in the ACM Digital Library