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 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:

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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.

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.

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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