Compiler-Assisted Software Testing for Heterogeneous
Computing Systems
SessionProgramming Tools
Presenter
Event Type
Exhibitor Forum
TimeTuesday, November 14th3:30pm -
4pm
Location503-504
DescriptionWhen optimizing or porting HPC applications, it’s
common to see numerical differences. This is even more
common on heterogeneous systems where execution
transitions between CPU and GPU. Finding the exact point
where the computations diverge is challenging and labor
intensive. We discuss a new PGI Compiler-Assisted
Software Testing (PCAST) feature to address this
problem. PCAST will allow a programmer to save
intermediate and final results of an existing
application via API runtime calls or directives that
create a reference file. The same runtime calls or
directives in the optimized or ported application
compare the intermediate and final results to the
reference file. For OpenACC applications on a
heterogeneous system, dynamic results checking is
supported by executing each parallel construct on the
CPU as well as the GPU and comparing the results after
each construct. We’ll cover these and other potential
applications that can simplify HPC application
development and tuning.
Presenter
