PCI-SCI protocol translations: Applying microprogramming concepts to FPGAs

  • Georg Acher
  • Wolfgang Karl
  • Markus Leberecht
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1482)


The SMiLE project at LRR-TUM adopts and implements the Scalable Coherent Interface (SCI) interconnection technology to couple Pentium-II based PCs into a compute cluster with distributed shared memory. A custom PCI-SCI adapter has been developed for bridging the PC's PCI local bus with the SCI network. Such a PCI-SCI adapter intended for connecting PCI-based PCs via SCI involves complex protocol processing. In the paper we describe the rationale and implementation issues of our custom PCI-SCI adapter design. In particular, we demonstrate how traditional microprogramming techniques can be applied for a structured and simplified FPGA design.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    G. Acher. Entwicklung eines SCI Knotens zur Kopplung von PCI-basierten Arbeitsplatzrechnern mit Hilfe von VHDL. Diplomarbeit, Technische UniversitÄt München, Institut für Informatik (LRR-TUM), Oct. 1996. (in German).Google Scholar
  2. 2.
    CONVEX Computer Corporation, Richardson, TX. Exemplar Architecture Manual, 1993.Google Scholar
  3. 3.
    D. B. Gustavson and Q. Li. Local-Area Multiprocessor: the Scalable Coherent Interface. In Proceedings The Second International Workshop on SCIbased High Performance LowCost Computing, pages 131–166, Santa Clara University, Santa Clara, CA, Mar. 1995. SCIzzL, Association of Scalable Coherent Interface (SCI) Local Area Multiprocessor Users, Developers, and Manufacturers.Google Scholar
  4. 4.
    H. Hellwagner, W. Karl, and M. Leberecht. Enabling a PC Cluster for High-Performance Computing. SPEEDUP Journal, 11(1), June 1997.Google Scholar
  5. 5.
    H. Hellwagner, W. Karl, and M. Leberecht. Fast Communication Mechanisms-Coupling Hardware Distributed Shared Memory and User-Level Messaging. In Proc International Conference on Parallel and Distributed Processing Techniques and Applications PDPTA, Las Vegas, Nevada, June 30–July 3 1997.Google Scholar
  6. 6.
    IEEE Standard for the Scalable Coherent Interface (SCI). IEEE Std 1596-1992, 1993. IEEE 345 East 47th Street, New York, NY 10017-2394, USA.Google Scholar
  7. 7.
    T. D. Lovett, R. M. Clapp, and R. J. Safranek. NUMA-Q: An SCI based Enterprise Server. In Proceedings The Sixth International Workshop on SCIbased HighPerformance LowCost Computing, pages 25–30, Santa Clara, CA, Sept. 1996. SCIzzL.Google Scholar
  8. 8.
    H. Müller, A. Bogaerts, C. Fernandes, L. McCulloch, and P. Werner. A PCI-SCI bridge for high rate Data Aquisition Architectures at LHC. In Proceedings of PCI5 Conference, page 156 ff, Santa Clara, USA, 1995.Google Scholar
  9. 9.
    PLX Technology Inc., 625 Clyde Avenue, Mountain View, CA. PCI 060 PCI Bus Master Interface Chip for Adapters and Embedded Systems, Apr. 1995. Data Sheet.Google Scholar

Copyright information

© Springer-Verlag 1998

Authors and Affiliations

  • Georg Acher
    • 1
  • Wolfgang Karl
    • 1
  • Markus Leberecht
    • 1
  1. 1.Lehr- und Forschungseinheit Informatik X Rechnertechnik und Rechnerorganisation/Parallelrechnerarchitektur (LRR-TUM)Institut für Informatik der Technischen UniversitÄt MünchenMünchenGermany

Personalised recommendations