Wyniki wyszukiwania dla: PRE-REDUCED RING

• Improving all-reduce collective operations for imbalanced process arrival patterns

  Publikacja

  • J. Proficz

  - JOURNAL OF SUPERCOMPUTING - Rok 2018

  Two new algorithms for the all-reduce operation optimized for imbalanced process arrival patterns (PAPs) are presented: (1) sorted linear tree, (2) pre-reduced ring as well as a new way of online PAP detection, including process arrival time estimations, and their distribution between cooperating processes was introduced. The idea, pseudo-code, implementation details, benchmark for performance evaluation and a real case example...

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• Investigation into MPI All-Reduce Performance in a Distributed Cluster with Consideration of Imbalanced Process Arrival Patterns

  Publikacja

  • J. Proficz
  • P. Sumionka
  • J. Skomiał
  • M. Semeniuk
  • K. Niedzielewski
  • M. Walczak

  - Advances in Intelligent Systems and Computing - Rok 2020

  The paper presents an evaluation of all-reduce collective MPI algorithms for an environment based on a geographically-distributed compute cluster. The testbed was split into two sites: CI TASK in Gdansk University of Technology and ICM in University of Warsaw, located about 300 km from each other, both connected by a fast optical fiber Ethernet-based 100 Gbps network (900 km part of the PIONIER backbone). Each site hosted a set...

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• Performance-driven yield optimization of high-frequency structures by kriging surrogates

  Publikacja

  • A. Pietrenko-Dąbrowska
  • S. Kozieł

  - Applied Sciences-Basel - Rok 2022

  Uncertainty quantification is an important aspect of engineering design, as manufacturing toler-ances may affect the characteristics of the structure. Therefore, quantification of these effects is in-dispensable for adequate assessment of the design quality. Toward this end, statistical analysis is performed, for reliability reasons, using full-wave electromagnetic (EM) simulations. Still, the computational expenditures associated...

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• Drop-coating deposition surface-enhanced Raman spectroscopy on silver substrates for biofluid analysis

  Publikacja

  • M. Wróbel
  • Z. Huang
  • S. Siddhanta
  • I. Barman

  - Rok 2019

  Utilization of surface-enhanced Raman spectroscopy as a measurement technique is of particular interest in biodetection due to its superb chemical specificity and high sensitivity. The use of SERS substrates further improve this method by massive enhancement of the molecule Raman spectrum, permitting very low levels of detection. Therefore it is important to seek for new ways to develop reliable substrates, which are quickly and...

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• The influence oil additives on spread cracks in silicon nitride

  Publikacja

  • W. Karaszewski

  - TRIBOLOGY INTERNATIONAL - Rok 2008

  The paper presents an experimental study of the influence of oil additives (Cl, S, P, cerium dioxide (CeO2)) on spread cracks in silicon nitride. The additives Cl, S, P are bound in molecules in liquid form soluble in the base oil. The CeO2 is purely in powder form in suspension. The use of CeO2 powder was made based on the good results of polishing of silicon nitride. A ceramic angular contact ball bearing was modelled using a...

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• The RING

  Czasopisma

  ISSN: 0035-5429 , eISSN: 2083-3520

• Inverse Modeling and Optimization of CSRR-based Microwave Sensors for Industrial Applications

  Publikacja

  • T. Haq Ul
  • S. Kozieł

  - IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES - Rok 2022

  Design optimization of multivariable resonators is a challenging topic in the area of microwave sensors for industrial applications. This paper proposes a novel methodology for rapid re-design and parameter tuning of complementary split-ring resonators (CSRRs). Our approach involves inverse surrogate models established using pre-optimized resonator data as well as analytical correction techniques to enable rapid adjustment of geometry...

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• Expedited Yield Optimization of Narrow- and Multi-Band Antennas Using Performance-Driven Surrogates

  Publikacja

  • A. Pietrenko-Dąbrowska
  • S. Kozieł
  • M. Al-hasan

  - IEEE Access - Rok 2020

  Uncertainty quantification is an important aspect of engineering design, also pertaining to the development and performance evaluation of antenna systems. Manufacturing tolerances as well as other types of uncertainties, related to material parameters (e.g., substrate permittivity) or operating conditions (e.g., bending) may affect the antenna characteristics. In the case of narrow- or multi-band antennas, this usually leads to...

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• Ring thruster - a preliminary optimisation study

  Publikacja

  • L. Matuszewski

  - Polish Maritime Research - Rok 2009

  The ring thruster is a new type of propeller, for which there is no experimental data to verify analytical design calculations. A significant feature of the ring thruster is the absence of a shaft. Propeller blades are mounted to the ring rotating inside the housing, which has the shape of a nozzle. For this reason the ring thruster is closest, with respect to both the construction and principle of operation, to the Kort nozzle...

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• The two ring road complexes of Gdansk

  Publikacja

  • Ł. Bugalski

  - Rok 2014

  The urban structure of Gdańsk city centre is determined by two ring road complexes. The first of them, the Gdańsk Ring, has been designed by Hermann Josef Stübben as a result of a defortification at the turn of the 19th and 20th centuries. This new modern zone of the city centre was destroyed like the rest of Gdańsk in the end of World War Two and had not been reconstructed as a result of de-Germanization of the Recovered Territories....