National Repository of Grey Literature 25 records found  previous11 - 20next  jump to record: Search took 0.00 seconds. 
Computing experience with IBM eServer x455 multiprocessor: the NUMA architecture and Itanium 2 processors
Jakl, Ondřej
The paper presents experience with a novel parallel IBM eServer xSeries 455 installed at the Institute of Geonics CAS, designated for demanding numerical computations, locally distinguished by its eight processors sharing large main memory. In particular, on specific benchmarks it compares performance of its Itanium 2 processors with other systems locally available and refers about problems related to the NUMA architecture of this machine.
Computational clusters
Jakl, Ondřej
The contribution deals with clusters of workstations in the context of their employment in parallel processing. It focuses on the nowadays very popular systems based on personal computers (so called Beowulf) and using the Linux operating system. On example of parallel solvers we demostrate that their performance is comparable with that of the much more expensive commercial parallel systems.
Parallelization on symmetric multiprocessors
Jakl, Ondřej
The contribution introduces into the programming of demanding applications on multiprocessors with shared memory. It provides an overview of the parallelization alternatives on this architecture and focuses on those which are based on multithreading. The most important tool, recently established standard OpenMP, is shown on an example.
An application of parallel DiD and DD solvers
Blaheta, Radim ; Jakl, Ondřej ; Krečmer, Karel ; Starý, Jiří
The paper describes solution of large scale linear systems arising from finite element analysis by parallel solvers, which use decomposition ideas. Namely, Displacement Decomposition and Domain Decomposition techniques are discussed.
Large scale FE analysis of stresses due to excavation and heating
Blaheta, Radim ; Jakl, Ondřej ; Kohut, Roman ; Starý, Jiří
Paper shows the requirements for the use of efficient iterative solvers and parallel high performance computing for solving linear systems, which arise from large scale 3-D finite element (FE) analysis of problems of elasticity and thermo-elasticity in geomechanics. We also summarize our experience and results relating to the use of problem decomposition iterative methods.

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4 Jakl, Oldřich
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