Although the focus of the paper is on #SmoothedParticleHydrodynamics, and the simulation of viscous fluids, the key finding is of more general interest: the numerical stability of #BiCGSTAB can be improved by rewriting the standard formulation en.wikipedia.org/wiki/Biconjug to avoid catastrophic cancellations in the computation of some important coefficients. Anyone interested in solving large linear systems would benefit from adopting the proposed alternative form of the method.

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I'm still preparing my post series on #GPGPU, but in the mean time you can read some about in our most recent published paper:
“A numerically robust, parallel-friendly variant of #BiCGSTAB for the semi-implicit integration of the viscous term in #SmoothedParticleHydrodynamics”, freely accessible for the next 50 days from this link:
authors.elsevier.com/a/1fN8C50

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Let's talk about #SmoothedParticleHydrodynamics (#SPH for short, even though you'll see #sph_ used on other sites, because #SPH also has a very common, very not-safe-for-work meaning …).

Why should we talk about it? Because it's relatively less known than other numerical methods, possibly undeservingly so, and because I love it.

So what is it? SPH is a Lagrangian meshless numerical method primarily used for #ComputationalFluidDynamics (and more recently also #ComputationalMechanics).

A few years ago I made this flow chart of which Mastodon posts end up in which timelines!

So, you can see how each instance will have a different local timeline, and even a slightly different federated timeline - and you can see why the federated timeline moves so much faster than the local one, too.

This is why it's important to boost good posts and use hashtags - the fediverse is fragmented and harder to search by nature.

[ #mastodon #meta #tootorial #howto #mastopedia #mastotip ]

(also can't wait for that edit feature, I've just spotted a couple of typos in my toot 8-( )

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So, I've tried adding a link to my profile to my Mastodon profile metadata, but apparently the backlink from my ORCID profile to te Mastodon one is not recognized.

Since the ORCID -> Mastodon link _does_ have a rel=me attribute, this looks like a small bug on the Mastodon side of things. Reported, hopefully it'll get fixed soon.
github.com/mastodon/mastodon/i

BTW, don't miss the 16th SPHERIC International Workshop () that will be held in this summer (June 6-9). If you're interested in and , this will be a great opportunity to get up to date on the latest scientific advances in the field.

spheric2022.it/

I'm a researcher at the Osservatorio Etneo, Catania section of the Italian National Institute for Geophysics and Volcanology . I work on , assessment, mitigation. Much of my work centers around , particularly with the () numerical method.

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