spiluk: Limit memory usage for iw work buffer based on input matrix s…

[vbrunini]

…ize.

Observed some application use cases where this buffer was using > 10x the amount of memory needed for the matrix being factorized which lead to OOM's later in the run because insufficient memory was available.

This is one potential solution to #2752 @vqd8a @lucbv

[cwpearson]

@vbrunini we will also need you to sign off on the commit (git commit --amend -s)

You can also apply the format diff printed out in the failing format check, or apply clang-format 16 yourself.

[vbrunini]

@vqd8a @cwpearson @lucbv can someone add a new approval for the CI to run? Had to fix some issues in a couple of the builds.

[vbrunini]

That DCO check keeps biting me :(

[cwpearson]

Yeah, sorry about that. Becomes a habit eventually...

[lucbv]

In ~/.gitconfig you can add to the following:

[format]
        signoff = true

That should automatically apply the signoff for you on all your commits, that's how I handled this. I think you can do the same with git config --global format.signoff true