The future of chemistry in silico with GAMESS

Event Sponsor: 
Computing, Environment and Life Sciences Seminar
Start Date: 
Apr 6 2017 - 1:30pm
Building/Room: 
Building 240/Room 4301
Location: 
Argonne National Laboratory
Speaker(s): 
Kristopher Keipert
Speaker(s) Title: 
Iowa State University
Host: 
Ray Bair

The GAMESS ab initio quantum chemistry software package has been maintained for high performance on a wide variety of hardware architectures over the past few decades. In spite of this resilience, the rapid approach of exascale computing brings substantial and unfamiliar challenges. Most methods in computational chemistry are not easily adaptable to the trend of manycore processors with high degrees of explicit parallelism. Those methods which are easily adapted are rarely implemented with hardware features such as wide vector lanes and high bandwidth memory in mind.
 
In this talk, I will first describe the methods in GAMESS which have been successful on modern leadership-class systems. Next, I will describe our efforts to improve the performance of these methods for modern hardware architectures. Finally, I will discuss our analysis of the performance and energy-to-solution of GAMESS calculations for novel low-power hardware architectures.