Computer Engineering Research Teaching

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Computer EngineeringResearch Teaching

• S. Vassiliadis
• ITS
• Electrical Engineering
• TU Delft

Intel April 99
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Outline

• General information
• Teaching
• Research

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Computer Engineering Analysis of data
processing requirements for electronic data
processing units and systems and the design
(synthesis) of their architecture, implementation
and realization.
What Does It Really Mean?
Architecture ?
Determine the function to perform
Implementation ?
Establish a method to achieve the function
Realization ?
Use available means to materialize the method
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Computer Engineering Interests
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Current Group Formation
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Research Financing 94-98 (in Kfl)
Total financing 6000 Kfl
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Scientific Results (94-98)

• Degrees
• PhD Theses................................ 9
• Eng. Degrees.............................. 5
• MSc............................................ 87
  
• Publications
• Books/Chapters.......................... 7
• Journal Papers............................ 47
• Conference Papers..................... 165
• Patents........................................ 50

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Industrial Academic Impact

• 5 Start-ups
• Hardware
• IBM AS400 mod 400, 500, 501, 405, 505
• IBM Advanced 36
• IBM s/390 G4 G5
• Motorola/Apple/IBM PowerPC 603e, 604e
• Motorola/Apple/IBM 750
• MWAVE 3780i DSP
• Motorola Activec Multimedia
• Spase Nijmegen
• TNO-FEL MOVE

• Software
• Un. of Amsterdam
• Un. of Utrecht
• TNO
• Indian Institute of Science
• Philips Research
• OCE
• NEC (Princeton Research)
• Expressed Interests
• HP
• GDM
• Nokia

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Education

• Undergraduate Courses
• Logic Design
• Computer Programming
• Computer Architecture I
• Interpretation of Computer Programs
• Microprocessors
• Computer Architecture II
• Graduate Courses
• Computer Architecture III
• Logic Design II
• Performance Analysis
• Instruction Level Parallelism
• Embedded System Design

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Research Projects
MOLEN Embedded system architecture,
multimedia, java. MOVE Embedded system
synthesis, compilers, hardware software
co-design. PAMELA Performance analysis and
languages. D-ILIAD Computer architecture,
implementation, computer arithmetic, switches.
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Embedded Systems

• Facts
• Billions of embedded Systems sold anually
• Most embedded processor have special requirements
  (Performance, Cost, Functionality, Power...)
• Processing is heterogeneous
• Short design cycles for rapid requirement changes
• Conclusions
• Pay special attention to shifting paradigms
• Fast technology transfer to industry
• Our involvement
• 2 Projects (MOLEN, MOVE) for embedded systems

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MOLENEmbedded System Design

• Topics
• Processor Embedded Architecture
• Multimedia
• Java
• Embedded System Tools
• Embedded Agents
• Current Contributions
• Java Processor
• Multimedia Instructions
• Specialized Units
• FPGA Units
• Future Directions
• Parametrical heterogeneous Embedded Systems

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MOLEN Multimedia Instruction Set Example Motion
Estimation Problem Compute

• Observations
• Vector is subword parallel but execution serial
• Vector instructions are too simple

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The MOLEN Solution (Euromicro 98)

• Characteristics new Instructions
• Streamed data
• ? Autorepeat loading (a chunk at time) ? ALOAD
• Single result from a 16x16 stream
• ? single multiple data reduction instruction ?
  SAD

Implementation issues ALOAD lt
autodecrement branch SAD lt CC determination
multiplication SAD Step 1 Determine
AiltBi 1 cycle
Step 2 Invert smaller to fit multiplier tree 0
cycles Step 3 Multiply -Add Accumulate
2 cycles
New Program ALOAD A,B SAD A,B,C
Our Example 16x16 data 19 cycles!
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Results

• Improvements
• Code Reduction (2 instead of 6 instructions )
• Scalable Implementation
• Improved Performance from to 112 to 19
  execution cycles
• Best performance for the loop (1 cycle load all)
  is 5 cycles
• Additions
• 2 new instructions
• An 5 increase in hardware for multiplier a
  trivial counter

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MOVE
Semi-automatic generation of application specific
processors
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MOVE

• Current Contributions
• Transport triggered architecture
• Operational design framework (add any unit you
  like, no restrictions)
• Several cheap designs (data logger,
  video-enhancher, MPEG-decoder, wireless
  communications)
• Future Directions
• Tune your application to suit your processor
• System design
• Multiprocessor TTA
• Low-power processors

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PAMELAPerformance Analysis of Computer Systems

• Current Contributions
• Specialized Languages
• Simulation Tools Methodology
• Parallel Algorithms
• Delft Architecture Workbench
• Future Directions (immediate)
• Coplete the Delft Architecture Workbench

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D-IliadHigh Performance General Purpose Computers

• Topics
• Uni Multiprocessors
• Internet Processing
• Computer Design
• High Speed Switches
• Current Contributions
• Instruction level parallel machines (Superscalar,
  SCISM)
• New Complex Instructions
• New Designs of Arithmetic Processing
• New Switch Design
• Future Directions
• New Architectural paradigm