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CURRICULUM VITAE

Full Name:

Dr. Tzvetan Tomov Ostromsky

Date of Birth:

03.09.1961

Place of Birth:

Sofia, Bulgaria

Nationality:

Bulgarian


Office Address:

Acad. G. Bonchev Str., bl.25A, 1113 Sofia, Bulgaria

Home Address:

18 F. J. Cury Street, bl. 79, app. 61, 1113 Sofia, Bulgaria


Office phone:

+359 2 9792 434

Home phone:

+359 2 8729 212


EDUCATION

Ph.D. in Computer Science, Sofia University, 1997.

M.S. in Mathematics, Sofia University, 1986.

Spoken languages: English - fluently, Russian - fluently, Bulgarian - native language.

PROFESSIONAL RECORD

  • Institute of Information and Communication Technologies (IICT) (formerly IPP), BAS, Sofia, Bulgaria, since February 1996
    • Assistant Professor - 1996-2005;
    • Associate Professor - since June 2005;
  • The Danish Computing Centre for Research and Education - Lyngby, Denmark; Research Associate, October 1993 - February 1996;
  • Center for Informatics and Computer Technology / later IPP, BAS , Sofia, Bulgaria; October 1986 - October 1993.

    • FIELDS OF RESEARCH

  • Parallel algorithms and high-performance computing (experience with CRAY T3E; SGI Power Challenge, Origin 2000, Origin 3800; SUN Sunfire; IBM sp2, sp3, sp5, Blue Gene/P; and other architectures).
  • Calculations in computational Grid environment.
  • Numerical treatment of large-scale air pollution models.
  • Estimation of the economical impact of long-term air pollution.
  • Preconditioning.
  • Numerical algorithms for large sparse linear systems.
  • Reordering and pivoting for general sparse matrices.
  • Orthogonal methods for least squares problems for general sparse matrices.
  • Graph theory and applications.

    • SCIENTIFIC VISITS

  • EPCC, The University of Edinburgh, Scotland, UK; supported by HPC-Europa programme (7 weeks), July - September 2007.
  • CINECA, Bologna, Italy; supported by the MINOS programme (4 weeks), November 2001.
  • EPCC, The University of Edinburgh, Scotland, UK; supported by TRACS programme, (13 weeks), August - October 2000.
  • NERI, Department of Atmospheric Environment, Roskilde, Denmark; supported by a NATO project (1month), January 2000.
  • Purdue University, Computer Science Department, Indiana, USA; Postdoctoral Research Associate (1 year), supported by the Grand Challenge project, August 1997 - August 1998.
  • The Danish Computing Centre for Research and Education - Lyngby, Denmark; supported by the APPARC project, December 1992 - October 1993.

    • RECENT TALKS

  • Running a large scale air-pollution model on the EPCC supercomputers, The Univ. of Edinburgh, 06 Nov. 2000.
  • Parallel Implementation of a Large-scale 3-D Air Pollution Model, Int. Conference on Large-Scale Scientific Computations, June 6-10, 2001.

    • LIST OF RECENT PUBLICATIONS

    1. I.T. Dimov, R. Georgieva, Tz. Ostromsky, Z. Zlatev, Sensitivity studies of pollutant concentrations calculated by the UNI-DEM with respect to the input emissions, Cent. Eur. J. Math., 2013, 11(8), pp. 1531 - 1545. DOI: 10.2478/s11533-013-0256-2 .
    2. Tz. Ostromsky, K. Georgiev, Z. Zlatev, An Efficient Highly Parallel Implementation of a Large Air Pollution Model on an IBM Blue Gene Supercomputer, in: Proc. 4-th International Conference AMiTaNS'12, June 11--16, 2012, Varna, Bulgaria, AIP Conf. Proc. 1487, 2012, pp. 135 - 142. ISSN: 0094-243X , ISBN: 978-0-7354-1099-2 .
    3. I. Dimov, R. Georgieva, Tz. Ostromsky, Monte Carlo Sensitivity Analysis of an Eulerian Large-scale Air Pollution Model, Reliability Engineering and System Safety 107 (2012), Elsevier, pp. 23 - 28. ISSN: 0951-8320. Doi: 10.1016/j.ress.2011.06.007 .
    4. Z. Zlatev, I. Dimov, I. Farago, K. Georgiev, A. Havasi, Tz. Ostromsky, Solving Advection Equations by Applying the Crank-Nicolson Scheme Combined with the Richardson Extrapolation, International Journal of Differential Equations, Vol. 2011 (to appear), doi:10.1155/2011/520840 .
    5. Tz. Ostromsky, I. Dimov, P. Marinov, R. Georgieva, Z. Zlatev, Advanced Sensitivity Analysis of the Danish Eulerian Model in Parallel and Grid Environment, in: Proc. 3-rd Int. Conference AMiTaNS'11 June 20-25, 2011, Albena, Bulgaria, American Institute of Physics (AIP), (to appear).
    6. Tz. Ostromsky, I. Dimov, R. Georgieva, Z. Zlatev, Parallel Computation of Sensitivity Analysis Data for the Danish Eulerian Model, Proc. 8-th International Conference LSSC'11, 6-10.06.2011, Sozopol, LNCS 7116 (to appear) (ISSN 0302-9743).
    7. K. Georgiev, Tz. Ostromsky, Z. Zlatev, New Parallel Implementation of an Air Pollution Computer Model -- Performance Study on IBM Blue Gene/P Computer, Proc. 8-th International Conference LSSC'11, 6-10.06.2011, Sozopol, LNCS 7116 (to appear) (ISSN 0302-9743).
    8. Z. Zlatev, I. Dimov, I. Farago, K. Georgiev, A. Havasi, Tz. Ostromsky, Implementation of Richardson Extrapolation in the treatment of one-dimensional advection equations, in: Numerical Methods and Applications, LNCS 6046, Springer, pp. 198 - 206, 2011 (ISSN 0302-9743).
    9. I. Dimov, R. Georgieva, Tz. Ostromsky, Adaptive Monte Carlo Algorithm for Sensitivity Studies of Eulerian Large-scale Air Pollution Models, in: Proc. 6-th International Conference on Sensitivity Analysis of Model Output, Milan, Italy, July 19-22, 2010 (E. Borgonovo, A. Saltelli and S. Tarantola, eds.), Procedia Social and Behavioral Sciences 2, Elsevier, pp. 7646 - 7647, (2010), (ISSN 1877-0428).
    10. I. Dimov, R. Georgieva, S. Ivanovska, Tz. Ostromsky, Z. Zlatev, Studying the sensitivity of pollutant's concentrations caused by variations of chemical rates, Journal of Computational and Applied Mathematics, Vol. 235 Iss. 2 (2010), Elsevier, pp. 391 - 402 (ISSN 0377-0427).
    11. Tz. Ostromsky, I. Dimov, R. Georgieva, Z. Zlatev, Sensitivity Analysis of a Large-scale Air Pollution Model: Numerical Aspects and a Highly Parallel Implementation, in: Large-Scale Scientific Computations, LNCS 5910 (2010), Elsevier, pp. 197 - 205 (ISSN 0302-9743).
    12. Tz. Ostromsky, Z. Zlatev, Parallel Performance and Scalability Experiments with the Danish Eulerian Model on the EPCC Supercomputers, in: Numerical Analysis and Its Applications i (S. Margenov L. Vulkov J. Wasniewski, Eds.), Proc. 4th Int. Conference NAA'2008, Lozenetz, Bulgaria, LNCS 5434 (2009), pp. 447-453 (ISBN 978-3-642-00463-6).
    13. P. Csomos, I. Dimov, I. Farago, A. Havasi, Tz. Ostromsky, Computational Complexity of Weighted Splitting Schemes on Parallel Computers , International Journal of Parallel, Emergent and Distributed Systems, Vol. 22, Issue 3 (2007), pp. 137-147 (ISSN 1744-5760).
    14. Tz. Ostromsky, Z. Zlatev, Parallel and GRID implementation of a large scale air pollution model, Proc. NM&A'06 (T. Boyanov, S. Dimova, K. Georgiev, G. Nikolov, Eds.), Borovets, Bulgaria, LNCS 4310 (2007), pp. 475-482 (ISBN 978-3-540-70940-4).
    15. Tz. Ostromsky, I. Dimov, Z. Zlatev, Parallel implementation and one year experiments with the Danish Euleian Model, Proc. 3-rd International Conference NAA'04, Rousse, Bulgaria, LNCS 3401 (Jan. 2005), pp. 440-447.
    16. I. Dimov, Tz. Ostromsky, Z. Zlatev, Challenges in using splitting techniques for large-scale environmental modeling , Proc. NATO ARW'04, Advances in Air Pollution Modelling for Environmental Security (I. Farago, K. Georgiev, A. Havasi, eds.), NATO Science Series IV: Earth and Environmental Sciences, Vol. 54, Springer (2005), pp. 115-131.
    17. I. Dimov, K. Georgiev, Tz. Ostromsky, Z. Zlatev, Computational challenges in the numerical treatment of large air pollution models, Ecological Modelling 179, Elsevier (2004), pp. 187-203.
    18. K. Georgiev ,Tz. Ostromsky, Performance results of a large air pollution model on two parallel computers, International Journal of Environment and Pollution, Vol.22, No.1-2 Inderscience Enterprice Ltd. (2004), pp. 43-50.
    19. Tz. Ostromsky, Z. Zlatev, Flexible Two-level Parallel Implementations of a Large Air Pollution Model, Numerical Methods and Applications (I.Dimov, I.Lirkov, S. Margenov, Z. Zlatev - eds.), LNCS-2542, Springer (2003), pp. 545-554.
    20. I. Dimov, K. Georgiev, Tz. Ostromsky, R. J. van der Pas, Z. Zlatev, Computational Challenges in the Numerical Treatment of Large Air Pollution Models, Mathpreprints Server: http://www.mathpreprints.com/math/Preprint/zlatev/20011210/3/.
    21. Tz. Ostromsky, W. Owczarz, Z. Zlatev, Computational Challenges in Large-scale Air Pollution Modelling, Proc. 2001 International Conference on Supercomputing, Sorrento, Italy, ACM Press, NY (2001), pp. 407-418.
    22. Tz. Ostromsky, Z. Zlatev, Parallel Implementation of a Large-scale 3-D Air Pollution Model, Large Scale Scientific Computing (S. Margenov, J. Wasniewski, P. Yalamov, Eds.), LNCS-2179, Springer (2001), pp. 309-316.
    23. Z. Zlatev, I. Dimov, Tz. Ostromsky, G. Geernaert, I. Tzvetanov, A. Bastrup-Birk, Calculating Losses of Crops in Denmark Caused by High Ozone Levels, Environmental Modelling and Assessment, Vol. 6, Kluwer (2001), pp. 35-55.
    24. Tz. Ostromsky, I. Dimov, I. Tzvetanov, Z. Zlatev, Estimation of the Wheat Losses Caused by the Tropospheric Ozone in Bulgaria and Denmark, Numerical Analysis and Its Applications (L. Vulkov, J. Wasniewski, P. Yalamov, Eds.), LNCS-1988, Springer (2001), pp. 636-643.
    25. I. Dimov, Tz. Ostromsky, I. Tzvetanov, Z. Zlatev, Economical Estimation of the Losses of Crops Due to High Ozone Levels, Large-Scale Scientific Computations of Engineering and Environmental Problems II (M. Griebel, S. Margenov, P. Yalamov, eds.), NNFM, Vol.73, Vieweg (2000), pp. 275-282.
    26. I. Dimov, Tz. Ostromsky, I. Tzvetanov, Z. Zlatev, Economical estimation of the losses of crops due to high ozone levels in the Bulgarian atmosphere, Agricultural Economics and Management, 5 (1999), pp. 48-52 (in Bulgarian).
    27. Tz. Ostromsky, A. Sameh, V. Sarin, Parallel Solution of Large Sparse Linear Systems by a Balance Scheme Preconditioner, Report CS-98-030, Comp. Sci. Department., Purdue University, W. Lafayette, IN, USA (1998).
    28. Tz. Ostromsky, A. Sameh, V. Sarin, A Parallel Sparse Linear System Preconditioner: Balance Scheme, Proc. SCI/ISAS'98, Orlando, FL, USA, Vol.2 (1998), pp. 367-372.
    29. Tz. Ostromsky, P. C. Hansen, Z. Zlatev, A Coarse-grained Parallel QR-factorization Algorithm for Sparse Least Squares Problems, Parallel Computing, Vol.24, No.5-6 (1998), pp. 937-964.
    30. Tz. Ostromsky, Z. Zlatev, Application of Sparse Matrix Techniques in the Chemical Part of a Large Air Pollution Model, Large-Scale Scientific Computations of Engineering and Environmental Problems (M. Griebel, O. Iliev, S. Margenov, P. Vassilevski, eds.), NNFM, Vol.62, Vieweg (1998), pp. 189-197.
    31. P. C. Hansen, Tz. Ostromsky, A. Sameh, Z. Zlatev, Solving sparse linear least squares problems on some supercomputers by using a sequence of large dense blocks, BIT, Vol.37, No.3 (1997), pp. 535-558.
    32. Tz. Ostromsky, Z. Zlatev, Using Dense Matrix Computations in the Solution of Sparse Problems, Proc. WNAA'96 - Russe, Bulgaria, LNCS-1196, Springer (1997), pp. 357-364.
    33. Tz. Ostromsky, S. Salvini, J. Wasniewski and Z. Zlatev, Parallel solution of sparse problems by using a sequence of large dense blocks, Applied Parallel Computing. Industrial Computation and Optimization (J. Wasniewski, J. Dongarra, K. Madsen and D. Olesen, Eds.), Springer (1996), pp. 65-76.
    34. Tz. Ostromsky, P. C. Hansen, Z. Zlatev, A Parallel Sparse QR-factorization Algorithm, Applied Parallel Computing (J. Dongarra, K. Madsen and J. Wasniewski, Eds.), LNCS-1041, Springer (1996), pp. 462-472.
    35. A. C. N. van Duin, P. C. Hansen, Tz. Ostromsky, H. Wijshoff and Z. Zlatev, Improving the Numerical Stability and the Performance of a Parallel Sparse Solver, Computers and Mathematics with Applications, Vol.30, No.12 (1995), pp. 81-96.
    36. Z. Zlatev, J. Wasniewski, P. C. Hansen and Tz. Ostromsky, PARASPAR: a package for the solution of large linear algebraic equations on parallel computers with shared memory, TR-95-10, UNI-C (Danish Computing Center for Research and Education), Technical University of Denmark, DK-2800 Lyngby, Denmark (1995).
    37. K. A. Gallivan, P. C. Hansen, Tz. Ostromsky, Z. Zlatev, A locally optimized reordering algorithm and its application to a parallel sparse linear system solver, Computing, Vol.54, No.1 (1995), pp. 39-67.
      Also available as Tech. Report TR-93-07, UNI-C (Danish Computing Center for Research and Education), Technical University of Denmark, DK-2800 Lyngby, Denmark (1993).
    38. P. C. Hansen, Tz. Ostromsky, Z. Zlatev, Two enhancements in a partitioned sparse code, Proc. First International Workshop PARA'94, Lyngby, Denmark, LNCS-879, Springer (1994), pp. 296-303.
    39. Tz. Ostromsky, Z. Zlatev, P. C. Hansen, K. A. Gallivan, Reordering of sparse matrices and application to a parallel sparse linear system solver, Scientific Computation and Mathematical Modelling (S. Markov, editor), DATECS, Sofia (1993), pp. 85-90.
    40. A. Basermann, P. Weidner, P.C. Hansen, Tz. Ostromsky, Z. Zlatev, Reordering of Sparse Matrices for Parallel Processing, Tech. Report TR-94-03, UNI-C, Lyngby, Denmark, February 1994
    41. Z. Karakehayov, Tz. Ostromsky, Distributed Control Using Shared Input, Proc. Twelfth IASTED International Conference on Applied Informatics, Annecy, France, May 18-20 (1994), pp. 276-278.
    42. Tz. Ostromsky, Z. Nedev, Broadcasting a Message in a Hypercube with Possible Link Faults, Parallel and Distributed Processing '91 (K. Boyanov, editor), Elsevier (1992), pp. 231-240.
    43. H. Djidjev, R. Andonov, V. Jossifov, V. Aleksandrov, Tz. Ostromsky, Mathematical Problems in Automatic Design of VLSI, Bulgarian Academy of Sciences (1989) (in Bulgarian).
    44. Tz. Ostromsky, A computer program for automatic synthesis of systolic arrays, Proc. 17-th Spring Conference of UBM, Varna, (1988), pp. 483-488 (in Bulgarian).

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