Optimizing OpenMP Parallelized DGEMM Calls on SGI Altix 3700

Research output: Contribution to conferencesPaperContributedpeer-review


Using functions of parallelized mathematical libraries is a common way to accelerate numerical applications. Computer architectures with shared memory characteristics support different approaches for the implementation of such libraries, usually OpenMP or MPI.
This paper’s content is based on the performance comparison of DGEMM calls (floating point matrix multiplication, double precision) with different OpenMP parallelized numerical libraries, namely Intel MKL and SGI SCSL, and how they can be optimized. Additionally, we have a look at the memory placement policy and give hints for initializing data. Our attention has been focused on a SGI Altix 3700 Bx2 system using BenchIT [1] as a very convenient performance measurement suite for the examinations.


Original languageEnglish
Number of pages10
Publication statusPublished - 2006


TitleEuropean Conference on Parallel Processing
Abbreviated titleEuroPar 2006
Conference number12
Duration28 August - 1 September 2006
Degree of recognitionInternational event

External IDs

Scopus 33750021165
ORCID /0000-0002-8491-770X/work/141543259
ORCID /0009-0003-0666-4166/work/151475555