Use of distributed computing systems in seismic wave form inversion

Aleshin, I. M.; Zhizhin, Mikhail; Koryagin, V. N.; Medvedev, Dmitry; Mishin, Dmitry; Peregoudov, D. V.; Kholodkov, K. I.

doi:10.2205/2009es000415

Cited by 2 publications

(3 citation statements)

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“…The problem was already ported to run on grid. For testing purposes a model from previous work [Aleshin et al, 2009] is adopted (see Table 1). …”

Section: The Problemmentioning

confidence: 99%

“…The main idea behind the solution of this specific inverse problem is exploiting an a posteriori probability distribution function (APDF) which reduces the problem to tabulation of a function of several variables. Since the APDF value is computed in each point independently the distributed computing systems fits computation process perfectly [Aleshin et al, 2009]. Distributed computing systems are supported by special software called the middleware, which primary goal is to organize multiuser workflow in distributed environment while securing the system against malicious use.…”

Section: Introductionmentioning

confidence: 99%

“…The inability to be user-modified or be installed on users site are Table 1. Example model adopted from [Aleshin et al, 2009] disadvantage of particular product but such solutions are the most content way of interaction with grids from users perspective. We have developed a custom grid application in the same way as mentioned above hiding most of technical issues of grid computing.…”

Section: Introductionmentioning

confidence: 99%

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Implementation of seismic data inversion as grid-backed web service

Kholodkov¹

2013

Russ. J. Earth Sci.

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The essence of probability approach in solving inverse problems is use of a posteriory probability density function (APDF). APDF bears a priory system signature and the way the corresponding model parameter set describes the observational data. APDF importance sampling is carried out independently in different points thus the problem is a good target for distributed computing. The software implementation make use of virtualization to lower the hardware cost: all Globus Toolkit services, except for GridFTP, run as virtual guests on execution nodes. Due to very insignificant resources utilization the guests make no footprint on node's computation power. The execution nodes local resource manager is TORQUE. The main thought for web interface is to hide complex middleware interaction from user. Such interaction usually takes place during start-up and result collection and analysis procedures. The implemented minimalistic web service allows defining of models, estimation of calculation time for user-specified parameter set, task start-up, management, results acquisition and visualization. The specific pilot problem we implemented is determination of seismic anisotropy of mantle and upper crust by teleseismic data.

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“…The problem was already ported to run on grid. For testing purposes a model from previous work [Aleshin et al, 2009] is adopted (see Table 1). …”

Section: The Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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