scholarly journals High-Speed Computation of the Kleene Star in Max-Plus Algebraic System Using a Cell Broadband Engine

2010 ◽  
Vol E93-D (7) ◽  
pp. 1798-1806
Author(s):  
Hiroyuki GOTO
Keyword(s):  
Algebraic System ◽  
High Speed ◽  
Cell Broadband Engine ◽  
A Cell

scholarly journals Programming the Linpack Benchmark for the IBM PowerXCell 8i Processor

2009 ◽  
Vol 17 (1-2) ◽  
pp. 43-57 ◽  
Author(s):  
Michael Kistler ◽  
John Gunnels ◽  
Daniel Brokenshire ◽  
Brad Benton
Keyword(s):  
High Speed ◽  
Double Precision ◽  
Data Movement ◽  
Processing Elements ◽  
Cell Broadband Engine ◽  
Design And Implementation ◽  
Computational Capability ◽  
High Speed Data ◽  
Linpack Benchmark ◽  
And Performance

In this paper we present the design and implementation of the Linpack benchmark for the IBM BladeCenter QS22, which incorporates two IBM PowerXCell 8i1processors. The PowerXCell 8i is a new implementation of the Cell Broadband Engine™2 architecture and contains a set of special-purpose processing cores known as Synergistic Processing Elements (SPEs). The SPEs can be used as computational accelerators to augment the main PowerPC processor. The added computational capability of the SPEs results in a peak double precision floating point capability of 108.8 GFLOPS. We explain how we modified the standard open source implementation of Linpack to accelerate key computational kernels using the SPEs of the PowerXCell 8i processors. We describe in detail the implementation and performance of the computational kernels and also explain how we employed the SPEs for high-speed data movement and reformatting. The result of these modifications is a Linpack benchmark optimized for the IBM PowerXCell 8i processor that achieves 170.7 GFLOPS on a BladeCenter QS22 with 32 GB of DDR2 SDRAM memory. Our implementation of Linpack also supports clusters of QS22s, and was used to achieve a result of 11.1 TFLOPS on a cluster of 84 QS22 blades. We compare our results on a single BladeCenter QS22 with the base Linpack implementation without SPE acceleration to illustrate the benefits of our optimizations.

scholarly journals Development of a High-speed Eigenvalue-solver for Constant Plasma Monitoring on a Cell Cluster System

2011 ◽  
Vol 4 ◽  
pp. 898-907
Author(s):  
Noriyuki Kushida ◽  
Ken-ichi Fujibayashi ◽  
Hiroshi Takemiya
Keyword(s):  
High Speed ◽  
Cluster System ◽  
Cell Cluster ◽  
A Cell ◽  
Plasma Monitoring ◽  
Eigenvalue Solver

Bringing it All Back Home

2007 ◽  
Vol 17 (1) ◽  
pp. 163-172 ◽  
Author(s):  
Peter Whalley
Keyword(s):  
Cell Phone ◽  
High Speed ◽  
Independent Contractor ◽  
Fully Integrated ◽  
Time Zones ◽  
A Cell ◽  
At Home ◽  
Older Child

ABSTRACT:Not so long ago I interviewed a computer engineer in her home. Surrounded with toys and a napping baby—the interview time had been chosen carefully—she talked about how she worked as an independent contractor for a large electronics company. Connected by high-speed broadband, two telephone lines, and a cell phone, she felt fully integrated into the work, exchanging electronic files with her colleagues and having telephone conversations with customers two continents and umpteen time zones away. She told me she often worked late after the baby was in bed and during the baby's afternoon nap before she went to pick her older child up from school. Despite these odd working times, however, she was convinced that none of the company's customers and only some of her work colleagues knew that she worked at home. She was very contented with the arrangement.

Electrical Characteristics Analysis of Bonded Cells for Shingled Modules

2020 ◽  
Vol 20 (11) ◽  
pp. 6653-6658
Author(s):  
Jeong Eun Park ◽  
So Mang Park ◽  
Won Seok Choi ◽  
Jae Joon Jang ◽  
Donggun Lim
Keyword(s):  
Laser Cutting ◽  
High Speed ◽  
Green Laser ◽  
Curing Temperature ◽  
Process Conditions ◽  
Laser Process ◽  
Cut Cell ◽  
Electrically Conductive Adhesive ◽  
Characteristics Analysis ◽  
A Cell

A shingled module fabricated using electrically conductive adhesive (ECA) can increase the light-receiving area and provide greater power than a conventional module fabricated using solder-coated copper ribbons. However, several issues such as damage from laser cutting and poor contact by the conductive paste may arise. In this study, a 15.675 × 3.1 cm2 c-Si cut cell was fabricated using a nanosecond green laser, and cell bonding was performed using ECA to fabricate shingled modules. If the laser process was performed with high speed and low power, there was insufficient depth for cut cell fabrication. This was because the laser only had a thermal effect on the surface. The cell was processed to a depth of approximately 46 μm by the laser, and it could be seen that the laser cutting proceeded smoothly when the laser process affected more than 25% of the wafer thickness. The cut cell was bonded by ECA, and the process conditions were changed. The highest efficiency of 20.27% was obtained for a cell bonded under the conditions of a curing time of 60 s and curing temperature of 150°C. As a result, the efficiency of the bonded cell was increased by approximately 2.67% compared to the efficiency of the conventional cut cell. This was because the shadow loss due to the busbar was reduced, increasing the active area of the module by eliminating the busbar from the illuminated area.

scholarly journals Introduction of Stevia rebaudiana Bertoni in in vitro culture

2020 ◽  
Author(s):  
S. Sh. Asadova
Keyword(s):  
Cell Culture ◽  
In Vitro Culture ◽  
High Speed ◽  
Stevia Rebaudiana ◽  
Stevia Rebaudiana Bertoni ◽  
A Cell ◽  
Different Levels ◽  
Adult Plants

A cell culture obtained from explants of adult plants and aseptic seedlings of the Stevia rebaudiana Bertoni variety with different levels of ploidy, characterized by high speed, proliferation and ability to morphogenesis.

scholarly journals Viscoelastic epoxy foams by an aqueous emulsion foaming process

2019 ◽  
Vol 56 (1) ◽  
pp. 105-118
Author(s):  
Du Ngoc Uy Lan ◽  
Muhammad Syazwan Fauzi ◽  
Cao Xuan Viet ◽  
Daniel Raps ◽  
Volker Altstädt
Keyword(s):  
Sodium Bicarbonate ◽  
High Speed ◽  
Water Molecules ◽  
Aqueous Emulsion ◽  
Blowing Agent ◽  
Compression Set ◽  
Foaming Process ◽  
A Cell ◽  
Viscoelastic Foams ◽  
Emulsifying Ability

The research proposed an aqueous emulsion foaming process to produce a viscoelastic epoxy foam having a density of 0.33–0.36 g/cm3 from the polyamide–epoxy adduct, which uses a reverse ratio of epoxy and polyamide hardener. The process is simple, economical and uses no surfactant, thanks to the emulsifying ability of polyamide hardener. Firstly, the mixture of excess polyamide, epoxy and sodium bicarbonate was emulsified with distilled water using high-speed stirring to form dispersed epoxy droplets in water. Secondly, a solution of ammonium chloride was added, which reacted with sodium bicarbonate to produce carbon dioxide and ammonia gases dispersed in the epoxy emulsion. The expanding gases induced flocculation and partial coalescence of the epoxy droplets; sequentially water molecules were entrapped within them. Finally, a curing process was carried out to stabilise the foam morphology and structure. Two types of pore morphologies were observed: a large foam-pore generated from blowing-agent gases and a cell-wall pore formed from the vapourisation of entrapped water (as the void template). Porosity and pore morphologies depended on blowing-agent content, and the viscoelasticity was affected by the epoxy/polyamide ratio. The obtained viscoelastic foams showed a large number of interconnected cells and exhibited high compression set values.

scholarly journals Ten–Second Electrophysiology: Evaluation of the 3DEP Platform for high-speed, high-accuracy cell analysis

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Kai F. Hoettges ◽  
Erin A. Henslee ◽  
Ruth M. Torcal Serrano ◽  
Rita I. Jabr ◽  
Rula G. Abdallat ◽  
...  
Keyword(s):  
High Speed ◽  
Physiological State ◽  
Common Vole ◽  
Membrane Conductance ◽  
Cardiac Cells ◽  
Blood Samples ◽  
Wide Range ◽  
A Cell ◽  
The Common ◽  
Standard Techniques

AbstractElectrical correlates of the physiological state of a cell, such as membrane conductance and capacitance, as well as cytoplasm conductivity, contain vital information about cellular function, ion transport across the membrane, and propagation of electrical signals. They are, however, difficult to measure; gold-standard techniques are typically unable to measure more than a few cells per day, making widespread adoption difficult and limiting statistical reproducibility. We have developed a dielectrophoretic platform using a disposable 3D electrode geometry that accurately (r2 > 0.99) measures mean electrical properties of populations of ~20,000 cells, by taking parallel ensemble measurements of cells at 20 frequencies up to 45 MHz, in (typically) ten seconds. This allows acquisition of ultra-high-resolution (100-point) DEP spectra in under two minutes. Data acquired from a wide range of cells – from platelets to large cardiac cells - benchmark well with patch-clamp-data. These advantages are collectively demonstrated in a longitudinal (same-animal) study of rapidly-changing phenomena such as ultradian (2–3 hour) rhythmicity in whole blood samples of the common vole (Microtus arvalis), taken from 10 µl tail-nick blood samples and avoiding sacrifice of the animal that is typically required in these studies.

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