P11: Energy-Efficient Transprecision Techniques for
Iterative Refinement
SessionPoster Reception
Event Type
ACM Student Research Competition
Poster
Reception
TimeTuesday, November 14th5:15pm -
7pm
LocationFour Seasons Ballroom
DescriptionThis paper presents transprecision techniques for
iterative refinement, which utilize various precision
arithmetic dynamically according to numeric properties
of the algorithm and computational latencies depending
on precisions. The transprecision techniques were
plugged into a mixed precision iterative refinement on
an Intel Xeon E5-2650 2GHz core with MKL 2017 and XBLAS
1.0. The transprecision techniques brought further
2.0-3.4X speedups and 3.0-4.1X energy reductions to a
mixed precision iterative refinement when double
precision solution accuracy was required for forward
error and a matrix size was ranged from 4K to 32K.
