Transcript Reconfigurable Supercomputing Systems

High-Level Programming of
High-Performance
Reconfigurable Computers:
MAPLD BOF-H2 Panel
Tarek El-Ghazawi
The George Washington University
[email protected]
http://www.seas.gwu.edu/~tarek
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The Question and My Answer
 "Can we develop a software-level programming
approach (e.g., a C language compiler) for FPGAs
that spans the needs of the high performance
reconfigurable computing community with a
multitude of FPGA-based HPC systems and also
the needs of the electronic design automation
community with a multitude of FPGA board
designs?
 My Answer:
You Bet!
Tarek El-Ghazawi, GWU
MAPLD BOF-H-2 Panel
Washington D.C., September 6-9, 2005 Slide 2
HOW?
 Abstraction
Design a rich programming model for highperformance reconfigurable machines
 Extend a standard sequential language to conform
to the programming model view
 Compilers to address common architectural
features
 Run-time systems to tune to specific machine
features
Tarek El-Ghazawi, GWU
MAPLD BOF-H-2 Panel
Washington D.C., September 6-9, 2005 Slide 3
Programming Models for
Parallel Computers
Process/Thread
Address Space
Data Parallel
e.g. HPF, C*
Message Passing
Ex: MPI[e.g. +C]
Tarek El-Ghazawi, GWU
Shared Memory
DSM/PGAS
Ex: OpenMP[e.g.+C] Ex: UPC
MAPLD BOF-H-2 Panel
Washington D.C., September 6-9, 2005 Slide 4
How cont.!
Avoid the hype! Need to know that it is hard, will take
enormous time and resources, but REALLY WORTH IT!
Needed Efforts
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Need abstract programming model(s) to express
» fine grain data parallelism and coarse grain functional
parallelism
» multiple levels of locality
Need automatic H.W./S.W partitioning and scheduling
algorithms
Need compilers to address automatically general hardware
optimizations and use reconfiguration to achieve them
Need run-time systems to support further machine specific
tunings
Need H.W./S.W. debuggers and performance analysis tools
And a lot more!!! But the good news are:
» There are solid intermediate steps
» There are works in related areas that can be leveraged
Tarek El-Ghazawi, GWU
MAPLD BOF-H-2 Panel
Washington D.C., September 6-9, 2005 Slide 5