Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lossy Checkpoint Compression in Full Waveform Inversion: a case study
  with ZFPv0.5.5 and the Overthrust Model   This paper proposes a new method that combines check-pointing methods with
error-controlled lossy compression for large-scale high-performance
Full-Waveform Inversion (FWI), an inverse problem commonly used in geophysical
exploration. This combination can significantly reduce data movement, allowing
a reduction in run time as well as peak memory. In the Exascale computing era,
frequent data transfer (e.g., memory bandwidth, PCIe bandwidth for GPUs, or
network) is the performance bottleneck rather than the peak FLOPS of the
processing unit. Like many other adjoint-based optimization problems, FWI is
costly in terms of the number of floating-point operations, large memory
footprint during backpropagation, and data transfer overheads. Past work for
adjoint methods has developed checkpointing methods that reduce the peak memory
requirements during backpropagation at the cost of additional floating-point
computations. Combining this traditional checkpointing with error-controlled
lossy compression, we explore the three-way tradeoff between memory, precision,
and time to solution. We investigate how approximation errors introduced by
lossy compression of the forward solution impact the objective function
gradient and final inverted solution. Empirical results from these numerical
experiments indicate that high lossy-compression rates (compression factors
ranging up to 100) have a relatively minor impact on convergence rates and the
quality of the final solution.

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The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph