1. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 1 IDEAL-IST Workshop Christos P. Sotiriou, Institute of Computer Science, FORTH. sotiriou@ics.forth.gr

2. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 2 FORTH FORTH - Foundation for Research and Technology - Hellas. –Established in 1983. –Internationally recognised R&D centre. –7 institutes, 280 Researchers, 735 Personnel (1999). –~30,000,000E of annual budget. –performs high-quality basic research. –Development of innovative technologies. –founder of many start-ups, FORTHnet is one of them. –contributes to the development of Science&Technology parks. –collaborates with the University of Crete and other Universities.

3. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 3 VLSI Group Activities Packet Switch Architectures (M. Katevenis) –commodity switches. –multi-gigabit switching fabrics with backpressure. Scalable Computing Infrastructures (A. Bilas) –system area networks (SAN). –single-system-image clusters. –networks of autonomous sensors. Advanced Computing Systems (E. Markatos) –Internet Systems and their Security. –GRID computing and peer-to-peer systems.

4. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 4 VLSI Group Activities Network Processing (I. Papaefstathiou) –High-throughput packet processing. –On-the-fly compression and encryption. System Timing and Synchronisation (C. Sotiriou) –Asynchronous circuit/system design low-power, low-EMI. –Asynchronous design using commercial EDA tools.

5. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 5 System Timing Activities Coordinators of IST Project ASPIDA (IST-2002-37796). –ASPIDA. (ASynchronous open-source Processor Ip of the Dlx Architecture). with Politecnico di Torino and Manchester University. –Aim: to develop an open-source, low-power, low-EMI, flexible- interface processor for embedded applications. fully-asynchronous CPU (DLX architecture). may be migrated to any fabrication technology. industrial quality testability (>95%). 2 processor bus interfaces: –WISHBONE: synchronous Open on-chip bus (OpenCores). –CHAIN: novel asynchronous on-chip bus.

6. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 6 System Timing Activities members of the ACiD-WG (IST-1999-29119). –Hosted the 3rd ACiD Workshop. Organising the 10th IEEE ASYNC conference. –More about this at the end! Other informal research activities: –SOC interconnect design (asynchronous). –EDA tool design (mainly synthesis). –EDA flow design. –Asynchronous FPGAs?

7. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 7 Asynchronous Technology? EMI Comparison (ARM9 vs. AMULET 3)

8. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 8 Asynchronous Technology? Power Density Comparison (Philips 80C51):

9. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 9 Asynchronous Technology? Deep SubMicron clocked designs: –clock distribution issues clock tree depth clock tree power consumption high ElectroMagnetic Interference (EMI) clock skew; timing closure problems –constant reduction of area reachable in 1 clock cycle –continuous power consumption –Example Designs DEC Alpha 21264: 30-40% power to clock tree ARM9TDMI, 220MHz, 32% power to clock tree Pentium4 : 20 pipeline stages, 42M trans, 66Watts

10. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 10 ASPIDA: R&D R&D activities in ASPIDA: –asynchronous circuit synthesis from standard HDLs. –use of commercial EDA tools for asynchronous design Cadence, Synopsys based EDA flows. –automated synthesis of asynchronous Control Circuits. relative timed (fast). speed independent (robust). –automated synthesis of asynchronous Datapaths. –automated scan chain insertion for ATPG –asynchronous on-chip bus (CHAIN) low communication latency. no Signal Integrity problems.

11. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 11 HARD IP Typical SOC SOFT IP HDL+ flow ΑDLX ASPIDA: Contribution ADLX

12. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 12 ASPIDA: CHAIN Interconnect

13. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 13 Collaboration/Ideas Collaboration in using/promoting asynchronous technology. –Using/improving our technology on specific applications: mobile and embedded systems. low-power, low-EMI systems. high performance? scalable asynchronous VLSI systems? mixed synchronous/asynchronous systems, interfaces and circuits. –Comparing with possible alternatives: optical clock networks, optical interconnects. –Develop EDA tools for asynchronous design.

14. 2/6/2003IDEAL-IST Workshop, Christos P. Sotiriou, ICS-FORTH 14 ASYNC 2004 The 10th IEEE International Symposium on Asynchronous Circuits and Systems HERSONISSOS, CRETE, GREECE, 19-23 April 2004. http://www.ics.forth.gr/async2004, http://www.async04.gr.