Details
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Type:
Story
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Status: Done
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Resolution: Done
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Fix Version/s: None
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Component/s: afw, meas_base, pipe_tasks, utils
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Labels:None
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Team:External
Description
Profiling reveals that Psf::computeKernelImage is the tall pole in measureCoaddSources.py, taking 47.5% of the runtime (much of this is due to inefficiencies in AST; DM-13847). The calling graphs for Psf::computeKernelImage and Psf::computeShape (which calls Psf::computeKernelImage) show multiple callers with significant contributions, which suggests that the caching functionality in Psf is not as effective as we desire. Investigate these cache misses and devise a plan for improving the cache hits.
0.0 .......... 0.01 / 0.36 lsst::afw::detection::Psf::getLocalKernel(lsst::afw::geom::Point<double, 2>, lsst::afw::image::Color) const [2074]
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0.0 .......... 0.13 / 32.09 lsst::meas::modelfit::DoubleShapeletPsfApproxAlgorithm::measure(lsst::afw::table::SourceRecord&, lsst::afw::image::Exposure<float, int, float> const&) const [347]
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7.1 .......... 745.86 / 752.92 lsst::meas::extensions::shapeHSM::HsmPsfMomentsAlgorithm::measure(lsst::afw::table::SourceRecord&, lsst::afw::image::Exposure<float, int, float> const&) const [160]
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7.3 .......... 772.18 / 775.05 lsst::afw::detection::Psf::doComputeImage(lsst::afw::geom::Point<double, 2> const&, lsst::afw::image::Color const&) const [156]
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33.1 .......... 3'482.05 / 3'495.95 lsst::meas::algorithms::ImagePsf::doComputeShape(lsst::afw::geom::Point<double, 2> const&, lsst::afw::image::Color const&) const [73]
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[67] 47.5 5'000.21 0.07 / 5'000.14 lsst::afw::detection::Psf::computeKernelImage(lsst::afw::geom::Point<double, 2>, lsst::afw::image::Color, lsst::afw::detection::Psf::ImageOwnerEnum) const
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47.5 .......... 4'999.65 / 4'999.65 lsst::meas::algorithms::CoaddPsf::doComputeKernelImage(lsst::afw::geom::Point<double, 2> const&, lsst::afw::image::Color const&) const [68]
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0.0 .......... 0.38 / 21.81 lsst::afw::image::Image<double>::Image(lsst::afw::image::Image<double> const&, bool) [411]
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0.0 .......... 0.10 / 3.91 lsst::afw::image::Image<double>::~Image() [759]
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0.0 .......... 0.01 / 136.99 operator new(unsigned long) [229]
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0.0 .......... 0.01 / 0.05 std::_Sp_counted_ptr_inplace<lsst::afw::image::Image<double>, std::allocator<lsst::afw::image::Image<double> >, (__gnu_cxx::_Lock_policy)2>::_M_destroy() [3651]
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2.5 .......... 263.99 / 877.79 lsst::meas::extensions::photometryKron::KronFluxAlgorithm::measure(lsst::afw::table::SourceRecord&, lsst::afw::image::Exposure<float, int, float> const&) const [143]
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5.6 .......... 587.63 / 587.69 lsst::meas::extensions::photometryKron::calculatePsfKronRadius(std::shared_ptr<lsst::afw::detection::Psf const> const&, lsst::afw::geom::Point<double, 2> const&, double) [171]
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7.2 .......... 757.15 / 778.02 lsst::meas::base::SdssShapeAlgorithm::measure(lsst::afw::table::SourceRecord&, lsst::afw::image::Exposure<float, int, float> const&) const [154]
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7.2 .......... 760.64 / 763.68 lsst::meas::base::LocalBackgroundAlgorithm::measure(lsst::afw::table::SourceRecord&, lsst::afw::image::Exposure<float, int, float> const&) const [158]
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7.4 .......... 774.28 / 799.98 lsst::meas::base::SdssCentroidAlgorithm::measure(lsst::afw::table::SourceRecord&, lsst::afw::image::Exposure<float, int, float> const&) const [151]
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[72] 33.2 3'495.98 0.03 / 3'495.95 lsst::afw::detection::Psf::computeShape(lsst::afw::geom::Point<double, 2>, lsst::afw::image::Color) const
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33.2 .......... 3'495.95 / 3'495.95 lsst::meas::algorithms::ImagePsf::doComputeShape(lsst::afw::geom::Point<double, 2> const&, lsst::afw::image::Color const&) const [73]
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