126. Performance evalution of portable collimation grid

Portable high-performance programs

This dissertation discusses how to write computer programs that attain both high performance and portability, despite the fact that current computer systems have different degrees of parallelism, deep memory hierarchies, and diverse processor architectures. To cope with parallelism portably in high-performance programs, we present the Cilk multithreaded programming system. In the Cilk-5 system,...

On Designing Portable High Performance . . .

Portable High Performance Fft Algorithms

FFT algorithms optimized to achieve high performance on a speciic parallel computer architecture are not portable without a reduction in performance. The main objective of this paper is to present a portable FFT algorithm that runs eeciently on diierent parallel computer systems. This goal can only be achieved if the algorithm is able to adapt itself to the computer system it runs on. The struc...

NLC Collimation Study Update: Performance with Tail Folding Octupoles

This note describes an update to the study of linear collider collimation system performance performed by the collimation task force and presented in [1, 2, 3]. In particular, the performance of the NLC collimation system with the addition of “tail-folding” octupoles is described. These octupoles allow the betatron collimation gaps to be opened by more than a factor of three. We present the opt...

Performance comparison of 4 portable oxygen concentrators.

BACKGROUND Several portable oxygen concentrators (POCs) have become available in the United States. Technical trade-offs are made in designing POCs, so their performance is expected to differ. METHODS We tested 4 POC models (Invacare XPO(2), Respironics EverGo, AirSep FreeStyle, and Inogen One) for oxygen delivery as a function of respiratory rate. We measured oxygen volume per pulse, pulse d...