OpenMP in VASP: Threading and SIMD
نویسندگان
چکیده
منابع مشابه
OpenMP versus threading in C/C++
When comparing OpenMP to other parallel programming models, it is easier to choose between OpenMP and MPI than between OpenMP and POSIX Threads (Pthreads). With languages like C and C++, developers frequently have chosen Pthreads to incorporate parallelism in applications. Few developers are currently using OpenMP C/C++, but they should. We show that converting Genehunter, a hand threaded C pro...
متن کاملExplicit Vector Programming with OpenMP 4.0 SIMD Extensions
Modern CPU and GPU processors with on-die integration of SIMD execution units for achieving higher performance and power efficiency have posed challenges to use the underlying SIMD hardware (or VPUs, Vector Processing Unit) effectively. Wide vector registers and SIMD instructions –Single Instructions operating on Multiple Data elements packed in wide registers such as AltiVec [2], SSE, AVX[10] ...
متن کاملExploiting Loop-Level Parallelism for SIMD Arrays Using OpenMP
Programming SIMD arrays in languages such as C or FORTRAN is difficult and although work on automatic parallelizing programs has achieved much, it is far from satisfactory. In particular, almost all ‘fully’ automatic parallelizing compilers place fundamental restrictions on the input language. Alternatively OpenMP provides an approach to parallel programming that supports incremental improvemen...
متن کاملAcceleration of High Dynamic Range Imaging Pipeline Based on Multi-threading and SIMD Technologies
In this paper we present a holistic approach to CPU based acceleration of the high dynamic range imaging (HDRI) pipeline. The high dynamic range representation can encode images regardless of the technology used to create and display them, with the accuracy that is only constrained by the limitations of the human eye and not a particular output medium. Unfortunately, the increase in accuracy ca...
متن کاملComparison of OpenMP and Classical Multi-Threading Parallelization for Regular and Irregular Algorithms
The new emerging Distributed Shared Memory architecture promises to be more scalable than Symmetric Multiprocessor architecture, and leads to a regain of interest for parallel shared-memory programming paradigms. This paper compares two such important paradigms: classical multithreading and multi-threading based on compiler directives (with OpenMP). Several implementations of regular and irregu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Quantum Chemistry
سال: 2018
ISSN: 0020-7608,1097-461X
DOI: 10.1002/qua.25851