TY  - CONF
AU  - Nagel, W. E.
AU  - Wingerath, K.
TI  - Three-dimensional numerical simulations of the czochralski bulk flow on a CRAY X-MP multiprocessor architecture
CY  - New York, New York, USA
PB  - ACM Press
M1  - FZJ-2016-03595
SP  - 266-272
PY  - 1988
AB  - Today, numerical simulation is used more and more to get detailed information about crystal growth processes. In the Czochralski crystal growth from electrically conductive melts, the application of an external magnetic field has become a very useful technique for improving crystal quality. The integration of the magnetic field into the simulation program leads to a system of coupled partial differential equations, i.e. incompressible Navier-Stokes equations and convective heat equations in combination with an external magnetic field, which have to be solved. Because of the regular access to data this problem is suitable for vector computers. The CRAY X-MP provides vectorization and multiprocessing capabilities. With multitasking it is possible to run different parts of one program in parallel. Both multitasking concepts, macrotasking and microtasking, were examined to evaluate their potential to speed-up the Czochralski crystal growth simulation program implemented on a CRAY X-MP. We will give a survey of the application, and will describe the concepts of macrotasking and microtasking on the CRAY X-MP architecture as well as the integration of these concepts into the simulation program. Timing results provide information about the user benefit obtained by using these techniques.
T2  - 2nd International Conference on Supercomputing
CY  - 4 Jul 1988 - 8 Jul 1988, St. Malo (France)
Y2  - 4 Jul 1988 - 8 Jul 1988
M2  - St. Malo, France
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.1145/55364.55390
UR  - https://juser.fz-juelich.de/record/811072
ER  -