Seismic migration of multiprocessor computer
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United States of America Patent
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Mar 30, 1993
Grant Date -
N/A
app pub date -
Sep 26, 1989
filing date -
Sep 26, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a preferred embodiment of the present invention, methods are provided for Kirchhoff-migrating seismic data using a parallel computer. The methods of the present invention preferably use a multiprocessor machine that is interconnected to form a hypercube. The presently preferred method is to build up one or more migrated output traces in each processor (node) designated as a 'migration' processor, as input traces are passed from migration node to migration node along a nearest-neighbor chain. When an output trace is completed, it is sent by a migration node to storage via an appropriate I/O processor and the migration node beings building a new output trace. There is essentially no limit to the length of seismic line which can be so migrated. Alternatively, the input traces may be held in the migration nodes and the output traces passed from node to node along a nearest-neighbor chain, or the input and output traces may be passed in opposite directions along the chain. Further, the use of multiple migration chains allows for efficient operation over a wide range of number of available processors.
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