smueller1234

9 ms·

1.
by smueller1234 5d ago
Cherenkov radiation is also a key mechanism behind ultra high energy cosmic ray (UHECR) detectors. UHECR are understood to be nuclei, not gamma rays. For ground based detectors, light tight water tanks are fitted with photo multipliers to c
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by smueller1234 12d ago
As another comment points out: that's nothing compared to high energy/particle physics! The Pierre Auger Observatory certainly is a large collaboration for the astroparticle physics domain though. It's a big international col
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by smueller1234 14d ago
Or this[2] 2007 Science paper on ultra high energy cosmic ray source candidates ("anisotropy") that we had to retract because significance started dropping almost the day the paper was approved. It was a fascinating experience as
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by smueller1234 5mo ago
The timelines matter as well: They were working on EUV at Zeiss (who make the lensing/mirroring systems) already in 2005. That's about 20 years of development.
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by smueller1234 8mo ago
Even if it's success rather than money, you still have survivorship bias to contend with, so it's not really much of a helpful distinction.
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by smueller1234 8mo ago
IIRC, the most recent and most technical public content we (Google) have published on Colossus are these: https://cloud.google.com/blog/products/storage-data-transfer... https://cloud.google.com/bl
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by smueller1234 9mo ago
Slight problem with that if you would like to live in a functioning, thriving democracy: democracy in the sense of "one person, one vote" requires or at least greatly benefits from a broadly educated population. It's not suff
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by smueller1234 9mo ago
You're right -- the theoretical particle physicists at my faculty were using Mathematica very heavily when I was still in academia and maintained a dedicated compute cluster for it. They really did not appreciate the debugging experien
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by smueller1234 1y ago
I realize you're making a general point about space/IO ratios and the below is orthogonal, no contradiction. It's actually a lot less user-facing per disk IO capacity that you will be able to "sell" in a large distr
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by smueller1234 1y ago
I think Chips and Cheese is more like a fine replacement for realworldtech.com sans the toxic and highly educational and entertaining forums. Anandtech was much more accessible to the general tech public, but also more commercial and thus h
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by smueller1234 1y ago
Google's internal systems have been written against the Colossus semantics for many, many years and thus benefit from it's upsides (performance, cost efficiency, reliability, strong isolation for a multi tenant system, ability to
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by smueller1234 1y ago
Concur, Colossus is one of the examples where Google built what almost feels like magic technology. I work on Google Storage (among other things), and I've wished for a Cloud offering that exposes Colossus for years. I don't know
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by smueller1234 1y ago
4% of revenue is terrifying for large corporations.
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by smueller1234 2y ago
https://www.s3ns.io/en This is Google + Thales doing the 3rd party operator model, with the operator being a subsidiary of Thales and not Google. (NB: I work for Google in the EU.)
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by smueller1234 2y ago
Was about to say that we managed upwards of 4k servers worth of MySQL databases (as in 4k baremetal servers worth, not 4k small VMs each having a small MySQL) using "Orchestrator" at Booking.com ten years ago. I checked if it was
16.
by smueller1234 2y ago
They make it easier, but just at a source code level. They're not a real (and certainly not full) abstraction. An example that'll be making it obvious: if you replace the underlying type with a floating point type, the semantics w
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by smueller1234 2y ago
It's actually quite likely something else (unless it's just an excuse to reap short term savings): in a company large enough, deciding to shift staffing from one area to another is hard. As an executive with thousands of staff, yo
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by smueller1234 2y ago
Multiple types of TPUs. (I work for Google, but the above is public information.)
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by smueller1234 2y ago
Former Perl language contributor here. A sibling comment to this already pointed out that you must use strict mode with Perl to retain your well being. The two languages certainly both have their terrible warts. I think in the implicit conv
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by smueller1234 2y ago
Many moons ago, I made a case for making strict mode the default in Perl. We settled on the current backwards compatibility compromise, which is that breaking changes are hidden behind a minimum version toggle: Eg. putting "use v5.14.0
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by smueller1234 2y ago
It's not an idle use case by the way. mhx wrote and maintains a library that provides important backwards compatibility for native (typically C based) extensions for Perl across decades of language releases.
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by smueller1234 2y ago
See my response to a sibling of the comment you're responding to. The library had shocking code quality issues. It's unlikely that they're all peachy now. The other side of this is that while Pieter's writing was marketi
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by smueller1234 2y ago
Zeromq will have changed a lot since then, but some time in the 2010s, I prototyped a system using it (which was going to be a major production system in a large tech company) and had weird unexpected blocking issues with it. To debug, I sa
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by smueller1234 2y ago
"Before I built a wall I’d ask to know What I was walling in or walling out, And to whom I was like to give offense." Only poem I can cite by heart a quarter of a century after spending time with it in school.
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Operation Triangulation: What You Get When Attack iPhones of Researchers(events.ccc.de)
40 points by smueller1234 3y ago|2 comments
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by smueller1234 3y ago
I haven't ever used a 3d printer. But your comment made me realize that if PrusaSlicer is based slic3r, it's actually also using software that I wrote many, many years ago. That's another side of open source: if you don'
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by smueller1234 3y ago
Apologies for nitpicking, but n^m doesn't mean m loops (ie n^1000 dient mean 1000 passes): that would be m n (1000 n in your example). I think your intuition argument kind of breaks down there.
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by smueller1234 3y ago
It's easy enough to repeat, but I'd be leaking sensitive info that way. Sorry :/
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by smueller1234 3y ago
Sorry for a second response to the same comment. While on the topic of entertainment, consider the opposite of putting erasure codes on many weird devices! Years ago, some colleagues and I did the napkin math over lunch to estimate what a s
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by smueller1234 3y ago
I would say for sure LTO tape drives.

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