L
Leopold Grinberg
Researcher at IBM
Publications - 46
Citations - 1353
Leopold Grinberg is an academic researcher from IBM. The author has contributed to research in topics: Solver & Visualization. The author has an hindex of 17, co-authored 46 publications receiving 1122 citations. Previous affiliations of Leopold Grinberg include University of Strathclyde & Ben-Gurion University of the Negev.
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Journal ArticleDOI
Active Memory Cube: A processing-in-memory architecture for exascale systems
Ravi Nair,Samuel Antao,Carlo Bertolli,Pradip Bose,Jose R. Brunheroto,Tong Chen,Chen-Yong Cher,Carlos Costa,J. Doi,Constantinos Evangelinos,Bruce M. Fleischer,Thomas W. Fox,Diego Sanchez Gallo,Leopold Grinberg,John A. Gunnels,Arpith C. Jacob,Philip Jacob,Hans M. Jacobson,Tejas Karkhanis,Changhoan Kim,Jaime H. Moreno,John Kevin Patrick O'Brien,Martin Ohmacht,Yoonho Park,Daniel A. Prener,Bryan S. Rosenburg,Kyung Dong Ryu,Olivier Sallenave,Mauricio J. Serrano,Patrick Siegl,Krishnan Sugavanam,Zehra Sura +31 more
TL;DR: This paper outlines a new architecture, the Active Memory Cube, which reduces the energy of computation significantly by performing computation in the memory module, rather than moving data through large memory hierarchies to the processor core.
Journal ArticleDOI
Outflow boundary conditions for arterial networks with multiple outlets.
TL;DR: A new method is developed to incorporate measurements at multiple outlets, based on a time-dependent resistance boundary condition for the pressure in conjunction with a Neumann boundary conditions for the velocity, at a computational complexity comparable to the widely used Resistance or Windkessel boundary conditions.
Journal ArticleDOI
Modeling Blood Flow Circulation in Intracranial Arterial Networks: A Comparative 3D/1D Simulation Study
TL;DR: The 3D simulations with the rigid walls predict higher amplitude of the flowrate and pressure temporal oscillations than the one-dimensional simulations with compliant walls at various segments even for small time-variations in the arterial cross-sectional areas.
Proceedings ArticleDOI
The design, deployment, and evaluation of the CORAL pre-exascale systems
Sudharshan S. Vazhkudai,Bronis R. de Supinski,Arthur S. Bland,Al Geist,James C. Sexton,J. Kahle,Christopher Zimmer,Scott Atchley,Sarp Oral,Don Maxwell,Verónica G. Vergara Larrea,Adam Bertsch,Robin Goldstone,Wayne Joubert,Chris Chambreau,David Appelhans,Robert S. Blackmore,Ben Casses,George Chochia,Gene Davison,Matthew A Ezell,Tom Gooding,Elsa Gonsiorowski,Leopold Grinberg,Bill Hanson,Bill Hartner,Ian Karlin,Matthew L. Leininger,Dustin Leverman,Chris Marroquin,Adam Moody,Martin Ohmacht,Ramesh Pankajakshan,Fernando Pizzano,James H. Rogers,Bryan S. Rosenburg,Drew Schmidt,Mallikarjun Shankar,Feiyi Wang,Py C. Watson,Bob Walkup,Lance D. Weems,Junqi Yin +42 more
TL;DR: The design and key differences of the Summit and Sierra systems are discussed, and several CPU, network and memory bound analytics and GPU-bound deep learning codes achieve up to a 11X and 79X speedup/node, respectively over Titan.
Journal ArticleDOI
Analyzing transient turbulence in a stenosed carotid artery by proper orthogonal decomposition.
TL;DR: Time- and space-window proper orthogonal decomposition (POD) was applied to quantify the different flow regimes in the occluded artery and a simplified version of the POD analysis that utilizes 2D slices only—more appropriate in the clinical setting—was investigated.