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Strong Scaling Parallelized Tool Paper
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Markus Kühbach
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Jan 17, 2019
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# PARAPROBE | ||
Scalable Parallelized Tools for Mining Atom Probe Tomography Data | ||
Strong Scaling Parallelized Tools for Mining Atom Probe Tomography Data |
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[Ions] | ||
Number=4 | ||
Ion1=Al | ||
Ion2=Fe | ||
Ion3=Si | ||
Ion4=Sc | ||
[Ranges] | ||
Number=4 | ||
Range1=26.7 26.9 Vol:0.01661 Al:1 Color:33FFFF | ||
Range1=55.9 56.0 Vol:0.01661 Fe:1 Color:33FFFF | ||
Range1=27.8 28.0 Vol:0.01661 Si:1 Color:33FFFF | ||
Range1=44.8 50.0 Vol:0.01661 Sc:1 Color:33FFFF |
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v0.1 | ||
^^^^ | ||
* **Initial implementation** | ||
* POS, EPOS reading, RRNG range file parsing | ||
* Barr et al. reconstruction, supports for up to 4.2 billion ion tips | ||
* Generation of synthetic single-crystalline tip structures | ||
* MPI/OpenMP thread parallelized spatial range querying and indexing tasks | ||
* Tip surface extraction through alpha shapes to entire datasets | ||
* Surface extraction made efficient through smart ion pruning pre-processing algorithm | ||
* Floating point precision exact distancing of ions to the alpha shape triangle hull | ||
* This allows to reduce bias in descriptive statistics and tessellation by excluding close to the surface ions from the analyses | ||
* Thread parallel radial distribution function (RDF), k nearest neighbor (kNN), Ripley K | ||
* Thread parallel 2-point descriptive spatial statistics | ||
* In-built batch processing capability for fully automatic processing of such statistics | ||
* Allows for arbitrary single and molecular ion type combinations | ||
* Optional ion type label randomization | ||
* Thread parallel maximum separation clustering method with parameter space sweeping capability | ||
* This can also be combined with the batch processing functionality | ||
* Thread parallel implementation of V. Araullo-Peters et al. reconstruction-space-based method for quantifying crystallographic signal through discrete Fourier analysis | ||
* Thread parallel wrapper around C. Rycrofts Voro++ library to enable hitherho impossible computations of volume tessellations to the entire tip | ||
* Characterize the cell volume to obtain atomic scale concentration values and topology through nearest neighbor analysis and p-vectors | ||
* Hierarchical Data Format (HDF5) / eXtensible Data Model and Format (XDMF) powered results reporting | ||
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Beta-stage functionality | ||
^^^^^^^^^^^^^^^^^^^^^^^^ | ||
* Optional a posteriori relabeling of ions after each maximum separation clustering run to perform descriptive spatial statistics in population of remaining non-clustered ions using guard zones | ||
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