TY - GEN
T1 - Numerical weather prediction on the supercomputer toolkit
AU - Alpert, Pinhas
AU - Goikhman, Alexander
AU - Katzenelson, Jacob
AU - Tsidulko, Marina
PY - 2002
Y1 - 2002
N2 - The Supercomputer Toolkit constructs parallel computation networks by connecting processor modules. These connections are set by the user prior to a run and are static during the run. The Technion's Toolkit prototype was used to run a simplified version of the PSU/NCAR MM5 mesoscale model [9]. Each processor is assigned columns of the grid points of a square in the (x,y) space. When n x n columns are assigned to each processor its computation time is proportional to n 2 and its communication time to n. Since the Toolkit's network computes in parallel and communicates in parallel, then, for a given n, the total time is independent of the size of the two dimensional array or the area over which the weather prediction takes place. A mesoscale forecast over the eastern Mediterranean was run and measured; it suggests that were the Toolkit constructed from ALPHA processors, 10 processors would do a 36 h prediction in only about 13 minutes. A 36 hours prediction with full physics for the whole earth will require 2 hours for 80 ALPHA processors.
AB - The Supercomputer Toolkit constructs parallel computation networks by connecting processor modules. These connections are set by the user prior to a run and are static during the run. The Technion's Toolkit prototype was used to run a simplified version of the PSU/NCAR MM5 mesoscale model [9]. Each processor is assigned columns of the grid points of a square in the (x,y) space. When n x n columns are assigned to each processor its computation time is proportional to n 2 and its communication time to n. Since the Toolkit's network computes in parallel and communicates in parallel, then, for a given n, the total time is independent of the size of the two dimensional array or the area over which the weather prediction takes place. A mesoscale forecast over the eastern Mediterranean was run and measured; it suggests that were the Toolkit constructed from ALPHA processors, 10 processors would do a 36 h prediction in only about 13 minutes. A 36 hours prediction with full physics for the whole earth will require 2 hours for 80 ALPHA processors.
UR - http://www.scopus.com/inward/record.url?scp=68749109374&partnerID=8YFLogxK
U2 - 10.1007/3-540-47847-7_30
DO - 10.1007/3-540-47847-7_30
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AN - SCOPUS:68749109374
SN - 354043674X
SN - 9783540436744
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 335
EP - 345
BT - High Performance Computing - 4th International Symposium, ISHPC 2002, Proceedings
Y2 - 15 May 2002 through 17 May 2002
ER -