Computational Science

Enlightened

 Enlightened
First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.
Awarded 350 times.
Taxonomy of ILU preconditioners
Awarded Feb 3, 2021 at 14:00
Is it possible to dynamically resize a sparse matrix in the Petsc library?
Awarded Dec 26, 2020 at 14:46
Is there a Moore's law for floating-point precision, and what would it imply?
Awarded Nov 16, 2020 at 6:55
Implementation of LP with separation oracle?
Awarded Oct 26, 2020 at 12:07
How can I avoid catastrophic cancellation?
Awarded Sep 22, 2020 at 22:47
Rule of thumb for sparse vs dense matrix storage
Awarded Jul 30, 2020 at 18:51
How do you debug numerical code, what could be source of this oscillatory error?
Awarded Jul 29, 2020 at 17:40
When and when not to use automatic differentiation
Awarded Jul 27, 2020 at 4:32
How to document math formulations in scientific computing codes?
Awarded Jul 14, 2020 at 14:11
Is there an iterative solver for dense matrices with possible zero diagonal entries?
Awarded Jul 5, 2020 at 10:26
scipy.optimize.fmin_bfgs: "Desired error not necessarily achieved due to precision loss"
Awarded Jun 19, 2020 at 14:45
Without positive definiteness, does an iterative solver work?
Awarded Jun 9, 2020 at 15:51
How to write integration tests for numeric simulation software?
Awarded May 27, 2020 at 14:11
How to find the nearest/a near positive definite from a given matrix?
Awarded May 9, 2020 at 22:42
Why would you need frameworks like MPI when you can multi-task using threads?
Awarded Apr 23, 2020 at 8:06
What are new c++20 features that are relevant to scientific computation?
Awarded Mar 19, 2020 at 13:35
Increasing computational performance by using 16 bit numbers
Awarded Mar 10, 2020 at 19:20
Fortran 90/95: Deallocating variables
Awarded Mar 10, 2020 at 15:10
biharmonic equation
Awarded Mar 4, 2020 at 10:50
applications of computational geometry in fields such as CFD?
Awarded Jan 23, 2020 at 20:30
Motivation behind Collocation Method
Awarded Jan 23, 2020 at 6:30
Memory Management - Why certain initializations order are faster?
Awarded Jan 22, 2020 at 9:35
why is A*v+B*v faster than (A+B)*v?
Awarded Jan 21, 2020 at 19:00
How much more work is it to code math models in Python, compared to working with Matlab?
Awarded Jan 4, 2020 at 17:45
Conserving Energy in Physics Simulation with imperfect Numerical Solver
Awarded Dec 31, 2019 at 20:35
What are the major differences between GMRES and FOM?
Awarded Dec 14, 2019 at 8:35
Role of boundary conditions (e.g. periodic) in Poisson equation
Awarded Sep 29, 2019 at 17:30
How should errors be reported in scientific libraries?
Awarded Sep 24, 2019 at 23:05
The real myth of GPU (specifically CUDA) really speed up FEM/CFD
Awarded Sep 17, 2019 at 18:45
What is the most efficient way to write 'for' loops in Matlab?
Awarded Jul 29, 2019 at 6:00
Stability of hyperbolic PDE and DG-FEM
Awarded Jul 2, 2019 at 11:30
Mathematically, why does mass matrix / load vector lumping work?
Awarded Jun 6, 2019 at 21:30
How do I know if my code is being vectorized by the compiler?
Awarded May 29, 2019 at 9:00
How can I determine the initial values of pseudo-random number generator if the sequence is given?
Awarded May 11, 2019 at 13:15
What is the state of the art in solving stiff initial value problems?
Awarded Apr 7, 2019 at 3:25
Whittaker-Shannon interpolation: Accuracy dies with speedup; can it be fixed?
Awarded Apr 4, 2019 at 9:45
Clenshaw-type recurrence for derivative of Chebyshev series
Awarded Mar 26, 2019 at 0:55
Numerical evaluation of the Exponential Integral Ei by rational Chebyshev approximations fails
Awarded Mar 26, 2019 at 0:55
Is there an open source set of ODE solvers for C that use the native C99 complex type?
Awarded Mar 22, 2019 at 14:50
Type of Navier-Stokes equation
Awarded Mar 18, 2019 at 1:00
The easiest way to find intersection of two intervals
Awarded Mar 17, 2019 at 7:05
What are the advantages and disadvantages of the particle decomposition and domain decomposition parallelization algorithms?
Awarded Mar 11, 2019 at 20:55
Does PETSc ever make use of LAPACK libraries for sparse matrix math?
Awarded Feb 26, 2019 at 4:25
Efficient computation of the matrix square root inverse
Awarded Feb 18, 2019 at 8:50
Solving linear systems by fft
Awarded Jan 25, 2019 at 11:35
Writing a parallel version of an algorithm. Only which someparts are worth distributing
Awarded Jan 12, 2019 at 20:35
How to design good finite difference schemes?
Awarded Jan 12, 2019 at 20:35
Solving linear system of the form $ABx=b$
Awarded Jan 7, 2019 at 20:35
How does density functional theory scale with system size?
Awarded Nov 10, 2018 at 12:20
How to directly compute the inverse of an ill-conditioned dense matrix
Awarded Nov 6, 2018 at 22:35
Symbolic computation vs. numerical computation
Awarded Oct 30, 2018 at 4:55
How does the QR algorithm applied to a real matrix returns complex eigenvalues?
Awarded Oct 24, 2018 at 7:25
Do I really need to invert this matrix
Awarded Oct 15, 2018 at 8:20
Which numerical methods preserve time reversal symmetry?
Awarded Aug 31, 2018 at 11:50
Selecting most scattered points from a set of points
Awarded Aug 23, 2018 at 22:30
full rank update to cholesky decomposition
Awarded Aug 23, 2018 at 1:10
Why are interior point methods difficult to warm start?
Awarded Aug 20, 2018 at 14:55
Computational science contests. Why arent there any?
Awarded Aug 18, 2018 at 14:45
Updatable SVD implementation in Python, C, or Fortran?
Awarded Aug 13, 2018 at 3:50
What is "good" parallel scaling?
Awarded Aug 6, 2018 at 21:15
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