التفاصيل البيبلوغرافية
| العنوان: |
A practical implementation of acoustic full waveform inversion on graphical processing units |
| المؤلفون: |
Abreo Carrillo, Sergio Alberto, Ramírez Silva, Ana Beatriz, Reyes, Oscar, Abreo Carrillo, David Leonardo, González Alvarez, Herling |
| المصدر: |
CT&F - Ciencia, tecnología y futuro, ISSN 0122-5383, Vol. 6, Nº. 2, 2015, pags. 5-16 |
| سنة النشر: |
2015 |
| المجموعة: |
Dialnet - Portada de revistas (Universidad de La Rioja) |
| مصطلحات موضوعية: |
Full waveform inversion, Adjoint state method, Graphical processing units, Convolutional perfect matched layer, Seismic modeling, Wave propagation, Inversión de onda completa, Método del estado adjunto, Unidades de procesamiento gráfico, Capas perfectamente emparejadas, Modelamiento sísmico, Propagación de onda, Processo de inversão de forma de onda completa, Método adjunto, Unidades de processamento gráfico, Modelagem sísmica, Propagação de ondas |
| الوصف: |
Recently, Full Waveform Inversion (FWI) has gained more attention in the exploration geophysics community as a data fitting method that provides high-resolution seismic velocity models. Some of FWI essential components are a cost function to measure the misfit between observed and modeled data, a wave propagator to compute the modeled data and an initial velocity model that is iteratively updated until an acceptable decrease of the cost function is reached. Since FWI is a wave equation based method, the computational costs are elevated. In this paper, it is presented a fast Graphical Processing Unit (GPU) FWI implementation that uses a 2D acoustic wave propagator in time and updates the model using the gradient of the cost function, which is efficiently computed with the adjoint state method. The proposed parallel implementation is tested using the Marmousi velocity model. The performance of the proposed implementation is evaluated using the NVIDIA GeForce GTX 860 GPU and compared to a serial Central Processing Unit (CPU) implementation, in terms of execution time. We also evaluate the GPU occupancy and analyze the memory requirements. Our tests show that the GPU implementation can achieve a speed-up of 26.89 times when compared to its serial CPU implementation. ; Recentemente, a inversão de onda completa (FWI, sigla em inglês) ganhou maior atenção na comunidade de exploração geofísica como método de ajuste de dados, que fornece modelos de velocidades sísmicas de alta resolução. Alguns dos componentes essenciais do FWI são uma função de custo para estimar a diferença entre os dados observados e os dados modelados, um propagador do campo de ondas acústicas para os dados modelados e um modelo de velocidade inicial, que é atualizada de forma iterativa. Como o FWI está baseado no método da equação da onda, as exigências computacionais de execução são altas. Neste artigo apresentamos uma implementação rápida do FWI acústico 2D em tempo em uma unidade de processamento gráfico (GPU, sigla em inglês). Esta implementação ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
https://dialnet.unirioja.es/servlet/oaiart?codigo=5563665Test; (Revista) ISSN 0122-5383 |
| الإتاحة: |
https://dialnet.unirioja.es/servlet/oaiart?codigo=5563665Test |
| حقوق: |
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| رقم الانضمام: |
edsbas.983C7DD7 |
| قاعدة البيانات: |
BASE |
