XRISM velocity dispersion of M82's hot wind cannot be produced by free-wind models alone and requires supersonic (Mach 1.7–3.1) small-scale motions that may channel energy into B-fields and cosmic rays.
IEEE Transactions on Parallel and Distributed Systems 33, 4 (2022), 805–817
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Presents new synchronous and asynchronous parallel approaches for GCP tensor decomposition and evaluates computational cost and accuracy on synthetic and real-world datasets.
GALÆXI is a new architecture-agnostic high-order discontinuous Galerkin framework for compressible turbulent flows on multi-vendor GPU systems.
Converting an 800k-line C++ mathematical library to C++20 modules is feasible with moderate effort and yields compile-time savings inside the library but no clear trend for downstream users.
A Kokkos-based C++ port of the SACRA numerical relativity code achieves ~10x speedup on GPU/APU over the Fortran CPU version while preserving waveform accuracy, pi-symmetry, and second-order convergence.
Simulations of accreting black holes in standard and complex spacetimes indicate that magnetic geometry, quantum corrections, and binary dynamics influence flares, precession, photon rings, and multi-wavelength variability, with potential EHT constraints.
The MPEX AI Digital Twins project reports that its two phase-I AI milestones for hot-spot control and damage assessment are on track for June 2026 demonstration.
citing papers explorer
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Supersonic Motion in the Driving Region of M82
XRISM velocity dispersion of M82's hot wind cannot be produced by free-wind models alone and requires supersonic (Mach 1.7–3.1) small-scale motions that may channel energy into B-fields and cosmic rays.
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Synchronous and Asynchronous Parallelism Approaches for Generalized Canonical Polyadic Tensor Decomposition with GenTen
Presents new synchronous and asynchronous parallel approaches for GCP tensor decomposition and evaluates computational cost and accuracy on synthetic and real-world datasets.
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An Architecture-Agnostic High-Order Discontinuous Galerkin Framework for Compressible Flows
GALÆXI is a new architecture-agnostic high-order discontinuous Galerkin framework for compressible turbulent flows on multi-vendor GPU systems.
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Experience converting a large mathematical software package written in C++ to C++20 modules
Converting an 800k-line C++ mathematical library to C++20 modules is feasible with moderate effort and yields compile-time savings inside the library but no clear trend for downstream users.
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SACRA-K: A Performance-Portable Numerical Relativity Code with Kokkos
A Kokkos-based C++ port of the SACRA numerical relativity code achieves ~10x speedup on GPU/APU over the Fortran CPU version while preserving waveform accuracy, pi-symmetry, and second-order convergence.
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GRMHD and GRRT Simulations of Black Hole Accretion: Flares, Precession, and Complex Spacetimes
Simulations of accreting black holes in standard and complex spacetimes indicate that magnetic geometry, quantum corrections, and binary dynamics influence flares, precession, photon rings, and multi-wavelength variability, with potential EHT constraints.
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MPEX AI Digital Twins Milestone Report
The MPEX AI Digital Twins project reports that its two phase-I AI milestones for hot-spot control and damage assessment are on track for June 2026 demonstration.