Interconnect hardware and topology minimal requirements for high-end supercomputing systems


  • A.A. Korzh
  • D.V. Makagon


коммуникационная сеть
сеть Клоса
параллельные вычисления
вычисления на распределенной памяти


Distributed shared memory systems with nonuniform memory access are considered. Some aggregate network bandwidth estimates are proposed with consideration of topological characteristics and data access patterns. Minimum hardware requirement estimates is given for torus and Clos networks. The paper was prepared on the basis of the authors’ report at the International Conference on Parallel Computing Technologies (PaVT-2008;





Section 2. Programming

Author Biographies

A.A. Korzh

D.V. Makagon


  1. Фролов А., Семeнов А., Корж А., Эйсымонт Л. Программа создания перспективных суперкомпьютеров // Открытые системы. 2007. № 9. 42-51.
  2. Слуцкин А., Эйсымонт Л. Российский суперкомпьютер с глобально адресуемой памятью // Открытые системы. 2007. № 9. 20-21.
  3. Sterling T. Critical Factors and Directions for Petaflops-scale Supercomputers // Presentation on IFIP WG10.3reak e-Seminar Series (
  4. Scott S., Abts D., Kim J., Dally W.J. The BlackWidow high-radix Clos network // Proc. Int. Symposium on Computer Architecture (ISCA). Boston, MA (US). 2006. 16-28.
  5. Kim J., Dally W.J., Towles B., Gupta A.K. Microarchitecture of a high-radix router // Proc. Int. Symposium on Computer Architecture (ISCA). Madison, WI (US). 2005. 420-431.
  6. Clos C. A study of non-blocking switching networks // The Bell System Technical J. 1953. 42, N 2. 406-424.
  7. Dally W.J. Performance analysis of k-ary n-cube interconnection networks // IEEE Transactions on Computers. 1990. 39, N 6. 775-785.