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Urs Hölzle Profile
Urs Hölzle

@uhoelzle

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Engineering Fellow at Google, working on the infrastructure powering Google Cloud and Google. Opinions are my own and are worth exactly what you pay for them.

Auckland, New Zealand
Joined May 2009
Don't wanna be here? Send us removal request.
@uhoelzle
Urs Hölzle
3 years
A trip down memory lane...exactly 23 years ago Google signed its first datacenter contract.  Let's walk through the lease in a thread. First, the copy you see here was sent by a "fax machine" which was something people used back then.
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@uhoelzle
Urs Hölzle
1 year
The strong collaboration between engineering, network operations, SRE, data center operations, and others was the primary reason for success. So to anyone involved in our networking efforts: thank you!
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@uhoelzle
Urs Hölzle
1 year
Meet Nuvem, a cable to connect Portugal, Bermuda, and the U.S. @googlecloud
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@uhoelzle
Urs Hölzle
1 year
RT @lukwam: I got a sneak preview of the Google Cloud Next '23 Developer Keynote today and y'all are in for a real treat! Less than two wee…
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@uhoelzle
Urs Hölzle
1 year
RT @JeffDean: Not that many systems handle 6B QPS. 😀 "Bigtable has been in continuous production use at Google for more than 15 years now…
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@uhoelzle
Urs Hölzle
1 year
The new era of #AI is here, and already solving some of the biggest problems in the world. I'm looking forward to sharing more with CIOs at the #NZCIO Summit tomorrow. I hope to see you there!
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@uhoelzle
Urs Hölzle
2 years
Not sure what to think, but it surely makes for an epic read. Do click into the Russian cat anime sub thread.
@8teAPi
Prakash (Ate-a-Pi)
2 years
The Race To Validate ⏰Previously, on Friday 28 July Kwon goes rogue and presents at the MMC conference. Lee is forced to give an interview to Yonhap, retracting the 3 author paper, and disclosing Kwon had been fired 4 months earlier. ⏰Continuing: 🇺🇸 Virginia:, HT Kim, shrugs off the frenzy, corrects the 6 author Arxiv paper. He resubmits on Saturday, with the correction to be mailed out by Arxiv on Tuesday morning. He then starts on his calls and emails. 🇺🇸 Illinois: At DoE funded, Argonne National Labs, Jorg Maser at the Center for Nanoscale Materials gets a call from HT. Maser is trying to figure out what is happening in LK99 as its superconductivity fades around the critical temperature. HT and Maser brainstorm before dialing off. 🇰🇷 Seoul: JH Kim is in the salt mines, supervising production of more LK99, trying to scale up the manufacturing process. HT has more questions on the manufacturing process, which JH quickly answers. Later in the day Lee storms in to the office, swearing at JH’s LinkedIn shitposts. JH deletes everything on his LinkedIn, killing the last Western social media presence of any member of the core team. On Saturday, an Internet influencer from China makes a visit to the modest Qcenter headquarters, is told “Yes, yes we have it” by reception, handed a business card and shooed away. 🇺🇸 Los Angeles: Andrew McCalip, Head of R&D at Varda, a space factory company, reads the description of the LK99 synthesis, and realizes he has most of the equipment in the office. If this is the first room temperature superconductor, there’s no way he’s missing out, so he hustles to secure the ingredients and livestreams the process on Twitch. It is perhaps the most watched stream of a live furnace on the platform in history. 🇨🇳 China: Chinese social media has exploded with speculation. Posts and hoaxes about the LK99 material abound. What is certain is that the materials are widely available, and the process described simple enough, that dozens of labs decide to make an attempt. 🕊️ Twitter: On a widely attended Spaces on Saturday evening, Korean sleuths track down and translate the Korean language scientific papers from Qcenter. They find that a serendipitous accident, the destruction of the quartz capsule on removal from the furnace, resulted in the first sign of the superconductor. This kink begins suspicion that the manufacturing process described in the papers in insufficient. Andrew McCalip, who is on the space, reacts to the news with a sigh. His materials are cooking, and the furnace removal is upcoming. He fires off questions to a number of people. Teams from multiple places start poring over translated Korean language scientific papers with a fine tooth comb. 🇷🇺 Russia: Soil scientist and anime catgirl Iris, stumbles upon the papers and reads them casually on Friday morning. Russian scientific practice when replicating Western papers is to deconstruct the science into abstraction. Not having the same access to equipment, Russian inquiry delves into the why much more deeply, to concentrate on the essence required to produce the outcome. With that starting point, cursing and swearing in inimical Russian style, she recognizes the smokescreen of the method in both papers immediately, cursing the idiocy of the Korean team (normally it would American, but the curses work just as well on Koreans). You want to produce a crystal, get good quality, well mixed starting inputs, and perform the actual exothermic reaction that produces the desired outcome. She posts her kitchen chemistry process over the weekend, at arrives at 2 confirmed Meissner effect levitation stones, beating all other public teams. She posts the pics on Twitter and begins to indulge in her favorite hobby, insulting the intelligence of westerners. 📈In Corporate Boardrooms Around The World: Eyebrows are raised, what-ifs are asked, quiet emissaries are despatched. ⏰Monday
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@uhoelzle
Urs Hölzle
2 years
Lots of great information (and data) in our latest annual report. (PDF is here:
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@uhoelzle
Urs Hölzle
2 years
Very happy to see this, not just because it will help power a nearby Google data center but also because it may lead to much more geothermal power plants in the future.
@TimMLatimer
Tim Latimer
2 years
1/Today I am thrilled to announce, after years of work, our team @fervoenergy has developed a major advancement in geothermal, proven it at the field scale, and is set to deliver commercial next-gen geothermal decades ahead of schedule. THREAD.
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@uhoelzle
Urs Hölzle
2 years
Best soccer ad ever. (Spoiler alert: big surprise halfway through.)
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@uhoelzle
Urs Hölzle
2 years
A data center – yes, a data center – enables artists to make music no one ever thought possible. Listen to @Google Data Centers’ podcast #WhereTheInternetLives ➡️
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@uhoelzle
Urs Hölzle
2 years
Some thoughts about being an engineer again.
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@uhoelzle
Urs Hölzle
2 years
The economic benefits are pretty mind boggling...but my favorite quote: "78% improvement in energy efficiency could be achieved through the migration of on-premise data centres to cloud". Higher efficiency + higher utilization = enormous energy savings.
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@uhoelzle
Urs Hölzle
2 years
Best wishes for your next life, may it be as awesome as your time in Google Cloud!
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