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Victor Eijkhout
  • Member for 9 years, 2 months
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6 votes

How to address numerical non-associativity for parallel reduction?

6 votes

Why my parallel code using MPI is much slower than the serial one?

5 votes

Distributed (MPI) matrix matrix multiplication

5 votes

Parallelize Scipy iterative methods for linear equation systems(bicgstab) in Python

4 votes
Accepted

Searching for recent code source for "Parallel scientific computing in C++ and MPI "

4 votes
Accepted

MapReduce with MPI question

4 votes

simulation outputs differ across hardware platforms

3 votes
Accepted

Send Petsc sequential matrix to another MPI rank

3 votes

Parallelizing FEM for elliptical PDEs with n >1

3 votes

Affecting parts of an array outside MPI process efficiently

2 votes

Good examples of "two is easy, three is hard" in computational sciences

2 votes
Accepted

How to begin writing scientific codes in C++ in Trilinos or PETSC style?

2 votes

Parallel output in ASCII-format with MPI

2 votes

How to store a TB size array in C++ on a cluster

2 votes

Why PETSc/MPI uses only 1 processor a number of times, rather than using several as prescribed by mpiexec

2 votes
Accepted

CPU usage when a MPI rank waits during a blocking communication

2 votes

How does MPI differentiate between two computers?

2 votes
Accepted

Level scheduling of triangular sparse matrices

1 vote

C - OpenMP, MPI, Serial Program

1 vote

How do I interpret the results from MPI_Wtime()?

1 vote

Writing a parallel version of an algorithm. Only which someparts are worth distributing

1 vote

How to compute the mean 2D slice of a 3D set of data in MPI

1 vote

How to compute 16 different simulations on parallel with pbs script on the same machine

1 vote

On the reordering of sparse matrices

1 vote

Can one safely use an OpenMP parallel loop with Armadillo?

1 vote

MPI_Test not progressing MPI_Isend/MPI_Irecv requests

1 vote
Accepted

OpenMP: parallelizing calculation of pair interaction forces

1 vote

Passing in user inputs with mpirun

0 votes

Petsc Mat object in class

0 votes

Guaranteed equality between binary results with increasing MPI processes