3min chapter

Geraint Thomas Cycling Club cover image

The best stage so far?! | Tour de France stage 14

Geraint Thomas Cycling Club

CHAPTER

The Breaky Day

Sunday's stage 15 from Leggett to San Gervé Mont Blanc 179 kilometers never goes super high We've got two cat one climbs in a cat three and a cat two The final climb 7k at an average of 7.7% Only goes up to 1000 just shy of 1400 meters So we're not talking super high altitude I can see what you're saying about the break because you look at that profile and it's sort of nudges you and said this is a breaky day But stages stage profiles only tell us half the story That and they particularly if everyone's had a really really tough day the day before and we're now proper deep in the race.

00:00
Speaker 2
So what is the thing that's controversial why would why do people not think that
Speaker 1
that should be part of the algebra. So a lot of people so one of the things that we we spent a lot of time doing was optimizing for this ability to transpose and to kind of treat rows and columns interchangeably we actually built a system that could handle hundreds of billions of columns and there just aren't that many systems in the world that can handle that many columns just because like you have to have metadata for all of your columns in most systems and we had a way basically of kind of having the metadata be inferred at runtime which is which is another another key aspect of the data frames but having these kind of like short but really really fat or wide tables is not something that's extremely common in the kind of world of databases and so that's that's kind of why it ended up being like okay the controversial if you would find this image you would find
Speaker 2
this machine learning though 100%
Speaker 1
yeah 100% yes it's extremely common in machine learning but databases don't like that's changing these days because databases are starting to do a lot more but databases have historically not been well optimized for doing machine learning workloads and so this idea of the transpose and the same world I think is yeah I mean databases would just crash if you try to throw throw a hundred billion columns into them and
Speaker 2
you

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