Accelerating linear solvers for reservoir simulation on GPU workstations
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Bibliographic record
Abstract
The solvers for solving large-scale linear systems occupy a crucial part of a reservoir simulator. We have studied linear solvers on GPU (Graphics Processing Unit) workstations. ILU(k) preconditioned Krylov subspace linear solvers have been completed and over 20 times speedup can be achieved on a four NVIDIA Tesla C2050/C2070 GPU workstation against a Intel Xeon X5570 CPU. Algebraic multigrid solvers with a group of smoothers are also implemented and the W-cycle, F-cycle and V-cycle are studied. Up to 7 times speedup of algebraic multigrid algorithms is obtained on single GPU. The solution time of large-scale linear systems can be shortened significantly based on our GPU-based linear solvers.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it