-
The attached parameter file crashes with 2 MPI processes in the 7th time step (mesh refinement happens in 5th timestep), but runs in serial.
[spherical_shell.txt](https://github.com/geodynamics/aspec…
-
I used Tpetra to created a contiguous row map. The map is used to create objects for a sparse matrix of bandwidth 7(_A_) and vectors (x and b). The non-zero entries in the matrix are inserted via Inse…
-
There are several methods to estimate the inverse covariance matrix (MLE, Pseudolikelihood, Dtrace, CLIME, ...). However, the MLE produces positive semi-definite/symmetric estimate with the standard …
-
_From @bob-carpenter on December 16, 2015 19:28_
Andrew reported that the Wishart RNG was returning non-symmetric returns, so we need to either add it to its transpose and divide by 2. You can see i…
-
For some reason, the covariance matrix in my system gets entries that are not positive definite.
Do you have any ideas on what may be causing this issue?
Thanks in advance!
-
_From @bob-carpenter on September 20, 2013 20:14_
mdivide_left_spd is in the code, but not exposed to Stan. Expose it and the right-handed version.
- [ ] mdivide_right_spd, defined via transpose
- …
-
Currently the `RealGalaxy` `__init__` takes a `pad_factor` argument, a factor by which to multiply the size of the original image when zero-padding.
It would be nice to be able to specify at least a …
-
We'd like to get eigenvalues of a small dense matrix instead of singular values, which are non-negative. Current interface does not return the eigenvectors which we also want. It will be great we can …
-
I do a lot of work with linear and non-linear least squares problems that involve large matrices. Fortunately these matrices are almost always symmetric positive definite, so there are ways of doing i…
-
Andrew reported that the Wishart RNG was returning non-symmetric returns, so we need to either add it to its transpose and divide by 2. You can see in the code that there's no guarantee that everythi…