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Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2789
... Summary We give an overview of an implementation of Reverse Time Migration (RTM) on heterogeneous multi-core hardware based on Graphics Processing Units (GPUs). We demonstrate the clear advantages of GPU-based hardware for RTM, not only in terms of performance for small to mid-scale problem...
Proceedings Papers

Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-336
... with the ambient wave approaching from the narrow side (ol = 90°, no current). It is quite clear that the reflected and diffracted waves induced by the submerged sea cache are considerably smaller than those shown in Figure 3 for the floating case under the same incident wave conditions. However, there is a strong...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–28, 2016
Paper Number: SPE-181533-MS
... of metadata and actual data is generally not a prominent feature in the architectural description of these systems, however it is clear that metadata must be loosely coupled to the actual data or otherwise the end user would never be able to find the content. Likewise client-side caching must also be present...
Proceedings Papers

Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-244
... and analysis of submersible pontoon systems in littoral shallow water environments. Based on the computed rag coefficients, it is quite clear that the round-edged configuration provides the most desirable over- all performance under strong currents since the sea caches must be designed to withstand ocean...
Journal Articles
Int. J. Offshore Polar Eng. 11 (03).
Paper Number: ISOPE-01-11-3-191
Published: 01 September 2001
... to a reduction of the surface contact area of the partially submerged hulls. Based on the computed drag coefficients, it is quite clear that the round-edged configuration provides the most desirable overall performance under strong currents, a key consideration as the sea caches must be designed to withstand...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997062
... to highly compete to non-compressed data access. Introduction There is a clear tendency in the seismic acquisition market to move to large and dense acquisition designs. There is more multi-client on large areas or Wide Azimuth Towed Streamer (WATS) or Ocean Bottom Surveys (OBS). This is due...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-071
... forces and moments. Diffracted and radiated potentials are used to compute those contributions. In the frequency domain, these effects are usually kept separate in different coefficient matrices or forcing terms. In nonlinear time-domain seakeeping, the distinction between components becomes less clear...
Journal Articles
Journal: SPE Journal
SPE J. 19 (02): 304–315.
Paper Number: SPE-163585-PA
Published: 22 October 2013
... migrated across processors in the run-time system. This technique is shown to be capable of achieving better overlap between computation and communication for cache efficiency. We use this approach in a legacy reservoir simulator and demonstrate a reduction in the execution time of parallel compositional...
Journal Articles
SPE J. 21 (05): 558–564.
Paper Number: SPE-7671-PA
Published: 01 October 1981
... (memory-hierarchical) nature of the CRAY-1 is illustrated in Fig. 1 . Address and operand data flow occurs over a single path between main and cache memory at the rate of one word per clock. These data are distributed to 12 pipelined arithmetic/logic functional units through eight 64-word vector...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-2879
... is the only con- secutive for the data in memory, then accesses to memory for the other directions is very expensive, in terms of L2 cache misses. This situation forces us to be careful about the way that data is processed to maximize the memory access vs. o- perations ratio. Besides, due to the reduced size...
Proceedings Papers

Paper presented at the 1988 SEG Annual Meeting, October 30–November 3, 1988
Paper Number: SEG-1988-0331
..., taking into account probable experimental errors. These bodies can be : Endless debates have been held on the free air gradient. In my opinion, these discussions are pointless: it is clear that the Reference Ellipsoid 1967 (IUGG, 19701 is the reference body, whose gravity influence is that which beat...
Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, March 20–23, 2018
Paper Number: OTC-28336-MS
... in order to make clear the oil and gas reservoir. Because the whole process of breaking rock is carried out underground and unknown, Oil & Gas drilling is always of high investment and high risk. Without clear information of the formation ahead of drill bit, it sometimes brings great risks to drilling...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 11–14, 2010
Paper Number: PSIG-1004
... one that spans the continent, but none as challenging as the Albertan winter where temperatures can drop to -40 °F. As schedules were laid out, it became clear that some of the early operations would occur in the heart of the winter. This provides obvious real world challenges; the most important...
Proceedings Papers

Paper presented at the SPE Europec/EAGE Annual Conference, June 4–7, 2012
Paper Number: SPE-152414-MS
...) traffic between caches and memory. Characteristics of a computational kernel can also be defined in terms of arithmetic intensity, which measures traffic between the processor and cache memory. Roofline model can be used to identify which computational platform would be a good match for a given kernel...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 26–28, 2007
Paper Number: SPE-106493-MS
..., and notationally clear. Modern AD codes are implemented with either Source Transformation or Operator Overload- ing approaches. Source Transformation. Source transformation in- volves the development of a pre-processing parser that re- ceives client code for the residual as input and generates code for derivatives...
Journal Articles
J Can Pet Technol 1 (01): 35–46.
Paper Number: PETSOC-62-01-07
Published: 01 March 1962
... these months, and the ground thoroughly frozen and snow-covered, these months are the best for setting out gasoline caches, for summer operations, by ski planes. The greatest drawback to such operations at this time is that it is not always possible to exactly locate shore lines, and care must be taken to put...
Journal Articles
Journal: SPE Journal
SPE J. 21 (06): 2062–2078.
Paper Number: SPE-173259-PA
Published: 16 June 2016
... residual and auxiliary vectors) be read. The ratio of floating-point operations to bytes of main memory transferred, also known as arithmetic intensity (Asanovic et al. 2009 ), of these kernels is low, and the problems of interest never fit in cache, nor can they be blocked across steps. The most...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 18–20, 2013
Paper Number: SPE-163585-MS
... in the run-time system. This technique is shown to be capable of achieving better overlap between computation and communication for cache efficiency. We employ this approach in a legacy reservoir simulator and demonstrate reduction in the execution time of parallel compositional simulations while requiring...
Journal Articles
Petrophysics 43 (02).
Paper Number: SPWLA-2002-v43n2a1
Published: 01 March 2002
... cemented. ROCK PHYSICS ANALYSIS OF LITHOFACIES Density and sonic logs have also been used to cnsurc: that cach facies occurs as significant clusters in terms of rock physics properties. Rock physics analysis can furthermore be used in a diagnostic way to detcrmine lithofacies and to definc training data...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203936-MS
... and linear solver, both show early promising results. GPU-based reservoir simulation is a future trend for HPC. The development of a reservoir simulator is complex, multi-discipline and time-consuming work. Our paper demonstrates a clear strategy to add tremendous GPU acceleration into an existing CPU-based...

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