Asynchronous global optimization techniques for medium and large inversion problems

Conference · Sat Apr 01 00:00:00 EST 1995

OSTI ID:90359

Pereyra, V; Koshy, M ^[1]; Meza, J C ^[2]

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1. Weidlinger Associates, Los Altos, CA (United States)
2. Sandia National Labs., Livermore, CA (United States)

We discuss global optimization procedures adequate for seismic inversion problems. We explain how to save function evaluations (which may involve large scale ray tracing or other expensive operations) by creating a data base of information on what parts of parameter space have already been inspected. It is also shown how a correct parallel implementation using PVM speeds up the process almost linearly with respect to the number of processors, provided that the function evaluations are expensive enough to offset the communication overhead.

• Research Organization: Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 90359
• Report Number(s): SAND-95-8591; CONF-951013-1; ON: DE95011338
• Resource Relation: Conference: SEG `95: 65. annual meeting and international exposition of the Society of Exploration Geophysicists (SEG), Houston, TX (United States), 8-13 Oct 1995; Other Information: PBD: Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
SEISMIC DETECTION
OPTIMIZATION
SEISMIC EVENTS
IMAGE PROCESSING
DATA BASE MANAGEMENT
ALGORITHMS