PCaPAC2014 - List of Authors (Davies, J.)

Paper	Title	Page
FPO022	New developments on the FAIR Data Master	207
FPI03	use link to see paper's listing under its alternate paper code
	M. Kreider, J. Davies, V. Grout Glyndŵr University, Wrexham, United Kingdom R. Bär, D.H. Beck, M. Kreider, W.W. Terpstra GSI, Darmstadt, Germany
	During the last year, a small scale timing system has been built with a first version of the Data Master. In this paper, we will describe field test progress as well as new design concepts and implementation details of the new prototype to be tested with the CRYRING accelerator timing system. The message management layer has been introduced as a hardware acceleration module for the timely dispatch of control messages. It consists of a priority queue for outgoing messages, combined with a scheduler and network load balancing. This loosens the real-time constraints for the CPUs composing the control messages noticeably, making the control firmware very easy to construct and deterministic. It is further opening perspectives away from the current virtual machine-like implementation on to a specialized programming language for accelerator control. In addition, a streamlined and better fitting model for beam production chains and cycles has been devised for use in the data master firmware. The processing worst case execution time becomes completely calculable, enabling fixed time-slices for safe multiplexing of cycles in all of the CPUs.
	Slides FPO022 [0.890 MB]

Paper

Title

Page

FPO022

New developments on the FAIR Data Master

207

FPI03

use link to see paper's listing under its alternate paper code

M. Kreider, J. Davies, V. Grout
Glyndŵr University, Wrexham, United Kingdom
R. Bär, D.H. Beck, M. Kreider, W.W. Terpstra
GSI, Darmstadt, Germany

During the last year, a small scale timing system has been built with a first version of the Data Master. In this paper, we will describe field test progress as well as new design concepts and implementation details of the new prototype to be tested with the CRYRING accelerator timing system. The message management layer has been introduced as a hardware acceleration module for the timely dispatch of control messages. It consists of a priority queue for outgoing messages, combined with a scheduler and network load balancing. This loosens the real-time constraints for the CPUs composing the control messages noticeably, making the control firmware very easy to construct and deterministic. It is further opening perspectives away from the current virtual machine-like implementation on to a specialized programming language for accelerator control. In addition, a streamlined and better fitting model for beam production chains and cycles has been devised for use in the data master firmware. The processing worst case execution time becomes completely calculable, enabling fixed time-slices for safe multiplexing of cycles in all of the CPUs.

Slides FPO022 [0.890 MB]