Automatic Calibration of Geothermal Reservoir Models Through Parallel Computing on a Workstation Cluster

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ITOUGH2 is an optimization code that allows estimation of any input parameter of the nonisothermal, multiphase flow simulator TOUGH2. ITOUGH2 inversions are computationally intensive because the so-called forward problem, i.e., the simulation of fluid and heat flow through the geologic formation, must be solved many times for different parameter combinations to evaluate the misfit criterion or to numerically calculate sensitivity coefficients. Most of these forward runs am independent from each other and can therefore be performed in parallel. Message passing based on the Parallel Virtual Machine (PVM) system has been implemented into ITOUGH2 to enable parallel processing of forward simulations ... continued below

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10 p.

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Finsterle, S. & Pruess, K. January 1, 1999.

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Description

ITOUGH2 is an optimization code that allows estimation of any input parameter of the nonisothermal, multiphase flow simulator TOUGH2. ITOUGH2 inversions are computationally intensive because the so-called forward problem, i.e., the simulation of fluid and heat flow through the geologic formation, must be solved many times for different parameter combinations to evaluate the misfit criterion or to numerically calculate sensitivity coefficients. Most of these forward runs am independent from each other and can therefore be performed in parallel. Message passing based on the Parallel Virtual Machine (PVM) system has been implemented into ITOUGH2 to enable parallel processing of forward simulations on a heterogeneous network of Unix workstations or networked PCs that run under the Linux operating system. This paper describes the PVM system and its implementation into ITOUGH2. Examples are discussed, demonstrating the use, efficiency, and limitations of ITOUGH2-PVM.

Physical Description

10 p.

Notes

OSTI as DE00006528

Medium: P; Size: 10 pages

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  • Twenty-Fourth Workshop on Geothermal Reservoir Engineering, Stanford, CA (US), 01/25/1999--01/27/1999; Other Information: Supercedes report DE00006528; PBD: 1 Jan 1999

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  • Report No.: LBNL--42384
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 6528
  • Archival Resource Key: ark:/67531/metadc706160

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  • January 1, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 6, 2017, 6:39 p.m.

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Finsterle, S. & Pruess, K. Automatic Calibration of Geothermal Reservoir Models Through Parallel Computing on a Workstation Cluster, article, January 1, 1999; California. (https://digital.library.unt.edu/ark:/67531/metadc706160/: accessed May 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.