A parallel solver for incompressible fluid flow simulation, used in biomedical device design among other applications, is discussed. The major compute- and communication-intensive portions of the code are described. Using unsteady flow in a complex implantable axial blood pump as a model problem, scalability characteristics of the solver are briefly examined. The code that exhibited so far good scalability on typical PC clusters is shown to suffer from a specific bottleneck when thousands of processors of a Blue Gene are employed. After resolution of the problem, satisfactory scalability on up to four thousand processors is attained.
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
Tel.: +1 703 830 6300
Fax: +1 703 830 2300 email@example.com
(Corporate matters and books only) IOS Press c/o Accucoms US, Inc.
For North America Sales and Customer Service
West Point Commons
Lansdale PA 19446
Tel.: +1 866 855 8967
Fax: +1 215 660 5042 firstname.lastname@example.org