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["Adelmann Andreas (PSI)" <andreas.adelmann AT psi.ch>]

Dear Colleagues Uldis and Matthias

both got an oral contribution for ICAP 2015. 

There will be a try run:

October 5 at 14.00 in WBBA 008

Thanks for stopping by,  enjoying the talks and 

provide feedback.

Andreas 

ID: 1286 - MODWC3  Dynamic Kernel Scheduler (DKS) - Accelerating the Object Oriented Particle Accelerator Library (OPAL)

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Speaker		Uldis Locans (PSI, Villigen PSI; University of Latvia, Riga)
Authors		Uldis Locans (PSI, Villigen PSI; University of Latvia, Riga), Andreas Adelmann, Andreas Suter (PSI, Villigen PSI)
Abstract		Hardware accelerators, such as graphical processing units (GPU) and Intel Many Integrated Core (MIC) processors, provide a huge performance potential for HPC applications. However, due to different hardware architectures and development frameworks, developing fast and manageable code for these devices is a challenging task. This development is especially challenging when integrating the usage of co-processors in large applications, such as OPAL, where changing the code to support every device is not feasible. DKS is being developed to provide a software layer between the host application and different co-processors. DKS separates device specific code from the host application and provides a simple interface to communicate and schedule task execution on the device. Algorithms in DKS are implemented using CUDA, OpenCL, and OpenMP to target different devices. The first version of DKS was integrated in OPAL to speed up the FFT based Poisson solver and Monte Carlo simulations for particle matter interaction. The concepts of DKS and its integration with OPAL will be presented, as well as results showing speedups in the range of 4x to 50x for OPAL simulations using GPU or Intel MIC.

ID: 1302 - THCBC4  Stationary Distributions in Cyclotrons with Higher Order Moments of the Charge Distribution

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Speaker		Matthias Frey (PSI, Villigen, Villigen)
Authors		Andreas Adelmann (PSI, Villigen PSI), Matthias Frey (PSI, Villigen, Villigen)
Abstract		This paper covers the topic of finding matched, i.e. stationary, distributions for coasting beams that takes into account higher order moments of the charge distribution. We present a general approach based on Lie-Algebra and Truncated-Power-Series Algebra, where the non-linear space-charge maps up to k-th order are constructed. The physical input parameters are intensity, projected emittances, and the energy. Our general approach is firstly compared and benchmarked with the well-known linear theory applied to the PSI Injector-2 and the Ring Cyclotron. Secondly we compared the non-linear approach to PIC calculations. Open questions such as constraining the higher order moments will be discussed as well as applications beyond cyclotrons.