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The series of images, including the picture at right, in "Globus Links Environments for Scientific Discovery" in the April-June 1999 issue of enVision, was insufficiently captioned. The caption should have read:
The Globus-based Cactus framework for creating portable parallel finite difference simulation codes was used to simulate colliding black holes and neutron stars in a demonstration at SC98. The simulations ran on supercomputers on both sides of the Atlantic Ocean--from NPACI, Max-Planck-Institut fÃ¼r Gravitationsphysik, the Konrad-Zuse-Zentrum fÃ¼r Informationstechnik Berlin (ZIB), Rechenzentrum Garching, and NCSA. These images, provided by Werner Benger, capture the simulation at different time steps.