Andrew Johnson

Using `num_threads` without `STAN_THREADS` should give warning

1

First flagged in #888, if a user specifies `num_threads` without adding `STAN_THREADS` to the compilation args, then it is silently ignored. This should give a warning or message

Add toolchain setup check for OpenCL

2

#### Summary It was identified on the forums that OpenCL models can fail to compile without a helpful error message: https://discourse.mc-stan.org/t/cmdstan-installation-error/32900/5 I think we should add a configuration/setup step for...

`show_messages=FALSE` only suppresses `stderr`

3

A request that's come up in the BDA course is the ability to supress all output from a `$sample()` run. At the moment, the best that can be done with...

Allow structured format for unconstrained parameters

8

The current approach to providing unconstrained parameters as arguments (as inherited from `rstan`) requires that they are passed as a single numeric vector with all unconstrained parameter values concatenated. After...

For instances where the compilation of the `hessian()` method fails due to `fvar` compatibility issues in the Math library ([as seen here](https://github.com/stan-dev/math/issues/2854)), it would be good to offer an alternative...

The new model methods and exposing functions methods are not WSL-compatible since the `cmdstan` installation is built for a different OS than the R session being exported to. Possible solution...

Request: Add release tags on GH

1

Hopefully a small request, but would it be possible to [add release tags](https://docs.github.com/en/repositories/releasing-projects-on-github/managing-releases-in-a-repository) to this repo? It would be a great help for downstream packaging, and help clear up confusion...

`JS_Eval` UBSAN Error: Null pointer passed to `memcpy`

4

Programs with `JS_Eval` that are compiled with `-fsanitize=undefined` throw an error due to a null pointer being passed to `memcpy` in [this line](https://github.com/bellard/quickjs/blob/67723c93e4241508ad1ff9bfad142e39f3f2cf88/quickjs.c#L33268). You can replicate using: ```c #include "quickjs.h"...

Highlighting for points that are both improvement and concern

1

I had a query about the approach to highlighting in the [SPC visual](https://github.com/AUS-DOH-Safety-and-Quality/PowerBI-SPC/issues/212), and I want to make sure that the final implementation is consistent with the NHSRplotthedots approach. In...

Allow Hessian functors to return Hessian as compressed sparse matrix

6

## Summary The Hessian functors currently return a full symmetric matrix for the Hessian, using double the memory needed. This PR updates the Hessian functors to return only the lower-triangular...