[Crib-list] TODAY: SPEAKER: Kathleen Knobe (Intel) -- CRIBB Seminar -- TIME: 12:00 Noon in Building 32, Room 141 (Stata) (fwd)

[Shirley Entzminger]

T O D A Y . . .

 	COMPUTATIONAL RESEARCH in BOSTON and BEYOND Seminar  (CRIBB)


DATE:		Friday, May 2, 2014
TIME:		12:00 Noon
LOCATION:	Building 32, Room 141 (Stata)
 		(32 Vassar Street)

 	(Pizza will be provided at 11:45 AM outside Room 32-141.)


TITLE:		Programming in CnC for Parallel Execution


SPEAKER:	Kathleen Knobe (Intel)


ABSTRACT:


Parallel programming is difficult for anyone but its particularly difficult for 
the domain expert who wants to focus on their domain (say finance, medical 
imaging or chemistry) and not on computer science. Most programming models 
require the user to think about and express what units of computation to 
execute in parallel. This is hard and depends on the target architecture. 
Instead, CnC requires the user to think about and express the ordering 
constraints among the units of computation. This is easier and depends only on 
the application. In fact, the user must know these constraints even to write a 
correct serial program. There are exactly two relationships that cause ordering 
constraints: producer/consumer (one computation produces data that another 
uses) and controller/controllee (one computation determines if another will 
execute). CnC is simply a way of expressing these ordering constraints. This 
approach not only simplifies the programmers problem but because the resulting 
program is less constrained the execution can be more efficient.

The talk will introduce CnC and present our experience with CnC LULESH, a shock 
hydro-dynamics application. This work was done for the DOE Exascale software 
stack (S-Stack) project. If time permits we may also touch on the tuning 
capabilities in CnC.

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Massachusetts Institute of Technology
Cambridge, MA


For more information about the "Computational Research in Boston and Beyond 
Seminar" (CRIBB), please visit...

 			http://math.mit.edu/crib/