2007
DOI: 10.1190/1.2742686
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Reverse time migration with optimal checkpointing

Abstract: The optimal checkpointing algorithm (Griewank and Walther, 2000) minimizes the computational complexity of the adjoint state method. Applied to reverse time migration, optimal checkpointing eliminates (or at least drastically reduces) the need for disk i/o, which is quite extensive in more straightforward implementations. This paper describes optimal checkpointing in a form which applies both to reverse time migration and to other applications of the adjoint state method, such as construction of velocity updat… Show more

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Cited by 346 publications
(141 citation statements)
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“…In order to do so, one has to save at each point of the medium the incident field from the source which could be a time series or one complex number. The storage when considering a time-domain approach could be an issue: a possible strategy is storing only few time snapshots for recomputing the incident field on the fly (Symes, 2007) at intermediate times. An additional advantage is that the attenuation effect could be introduced as well.…”
Section: Time-domain or Frequency-domain Approachesmentioning
confidence: 99%
“…In order to do so, one has to save at each point of the medium the incident field from the source which could be a time series or one complex number. The storage when considering a time-domain approach could be an issue: a possible strategy is storing only few time snapshots for recomputing the incident field on the fly (Symes, 2007) at intermediate times. An additional advantage is that the attenuation effect could be introduced as well.…”
Section: Time-domain or Frequency-domain Approachesmentioning
confidence: 99%
“…In this thesis, we focus on 2D data and it is therefore possible to reconstruct the source wavefield using this method. Two other solutions which can also be used in 3D modelling are to run the forward modelling scheme backwards in time (Dussaud et al, 2008) and to use a checkpointing scheme to reconstruct the source wavefield (Symes, 2007).…”
Section: Source Wavefield Reconstructionmentioning
confidence: 99%
“…If the smoothing stencil along time axis is short, then efficient options like check-point access could be used for propagating wavefields and computing the propagation directions (Symes, 2007). …”
Section: Inversion With Time-lag Gathersmentioning
confidence: 99%