SIAM Undergraduate Research Online
Volume 10
In This Volume
-
Performance comparison of Intel Xeon Phi Knights Landing
Published electronically December 13, 2017DOI: 10.1137/17S015896
Authors
Ishmail Jabbie (University of Maryland, Baltimore County), George Owen (Louisiana State University), Benjamin Whiteley (University of Maryland, Eastern Shore)
Project Advisors
Matthias Gobbert (University of Maryland, Baltimore County)
Abstract
The Intel Xeon Phi is a many-core processor with a theoretical peak performance of over 3 TFLOP/s of double precision. We contrast the performance of the second-generation Intel Xeon Phi, code-named Knights Landing (KNL), to the first-generation Intel Xeon Phi, code-named Knights Corner (KNC), as well as to a node with two multi-core CPUs as baseline reference. The test code solves the classical elliptic test problem of the Poisson equation whose performance is prototypical for the computational kernel in many numerical methods for partial differential equations. The results show that the KNL can perform approximately four times faster than the KNC or than two CPUs, provided the problem fits into the 16 GB of on-chip MCDRAM memory of the KNL. The studies also confirm the nominal five times faster speed of the new high-performance MCDRAM memory in the KNL compared to the DDR4 memory of the node. We demonstrate the ease of porting code to the KNL by focusing on performance that was achieved by only re-compiling hybrid MPI+OpenMP code with a KNL ag.
-
Synchrony breaking bifurcations in small neuronal networks
Published electronically December 4, 2017 -
Optimal Shape of Water Towers
Published electronically November 30, 2017 -
Modeling smart growth of cities through entropy and logistics
Published electronically November 29, 2017 -
Analysis of Equity Markets: A Graph Theory Approach
Published electronically September 26, 2017 -
Frequency Response of Blood Flow Autoregulation
Published electronically September 20, 2017 -
Fusion in Card Collecting Games: A Probable Outcome
Published electronically August 30, 2017 -
A Comparison of Measles Vaccination Regimes in a Stochastic, Spatial SIR Model
Published electronically August 23, 2017 -
Change-point Detection Methods for Body-Worn Video
Published electronically August 22, 2017 -
Raining Down on Rising Sea Levels
Published electronically August 9, 2017 -
Propagation of lead in the human body
Published electronically July 26, 2017 -
A Simple Model for Human Immunodeficiency Virus Based on Erlang's Method of Stages
Published electronically June 13, 2017 -
Cats, Rabbits, Birds, and Viruses, Oh My! Modelling the Conservation Implications of a Complex Virus Release in a Predator-Prey System
Published electronically May 5, 2017 -
Detecting Foot-Chases from Police Body-Worn Video
Published electronically March 31, 2017 -
No oscillations in the Michaelis-Menten approximation of the dual futile cycle under a sequential and distributive mechanism
Published electronically March 23, 2017 -
On the Immunization of Small Computer Networks
Published electronically February 1, 2017
Become a SIURO Author
Publish your undergraduate research with SIAM to experience all aspects of the peer review process — from submission, review and revision, to publication.
Submit a Paper to SIURO