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#cow

10 posts10 participants0 posts today
Public
Koantig

I have a small set of linux machines (~5) that are mostly sitting idle. How can I turn it into a modest #CoW (cluster of workstations) so that people can easily submit long-running jobs to it?

Jobs will be mostly written in #rstats and #python .

What's a good entry-level setup for this? Easy to maintain, easy to use, nothing fancy.

I haven't done anything like that for at least 10 years, I'm sure things have moved on since then.

Thanks!

#help#hpc
Public
Paul Kinsler

It is well known that the "spherical cow" is an overly aggressive approximation. Hence:

arxiv.org/abs/2504.00506

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arXiv.orgHigher multipoles of the cowThe spherical cow approximation is widely used in the literature, but is rarely justified. Here, I propose several schemes for extending the spherical cow approximation to a full multipole expansion, in which the spherical cow is simply the first term. This allows for the computation of bovine potentials and interactions beyond spherical symmetry, and also provides a scheme for defining the geometry of the cow itself at higher multipole moments. This is especially important for the treatment of physical processes that are suppressed by spherical symmetry, such as the spindown of a rotating cow due to the emission of gravitational waves. I demonstrate the computation of multipole coefficients for a benchmark cow, and illustrate the applicability of the multipolar cow to several important problems.
#spherical#cow#approximation
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