CRIBB Semainar: Programming in CnC for Parallel Execution

Speaker: Kathleen Knobe , Intel

Date: Friday, May 02, 2014

Time: 12:00 PM to 1:00 PM Note: all times are in the Eastern Time Zone

Refreshments: 11:45 AM

Public: Yes

Location: Stata 32-141

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Host: Prof. Alan Edelmen , MIT

Contact: Patrice Macaluso, (617) 253-4347, macaluso@csail.mit.edu

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

Speaker URL: None

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Reminders to: seminars@csail.mit.edu

Reminder Subject: TALK: Programming in CnC for Parallel Execution

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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This event is not part of a series.

Created by Patrice Macaluso at Thursday, May 01, 2014 at 1:44 PM.