Daniel Lemire - Google+

Posts

Post has attachment

Year 2017: technological highlights

23h

Year 2017: technological highlights https://lemire.me/blog/2018/01/03/year-2017-technological-highlights/

Add a comment...

Post has attachment

Public

Going to bed

Add a comment...

Post has attachment

whyevolutionistrue.wordpress.com

Public

Forcing people to travel to Saudi Arabia for a competition is stupid.

A real feminist

Add a comment...

Science and Technology links (December 15th, 2017)

https://lemire.me/blog/2017/12/16/science-and-technology-links-december-15th-2017/

Add a comment...

Public

The Swastika has its own unicode character. Very convenient if you are a Nazi.

Show all 7 comments

Dominic Amann: +Jan Moren I had heard the orientation was reversed for the swastika. Is that not true?

Jan Moren: +Dominic Amann I don't think so. It's probably more local tradition; some places your draw it one way, in others the other.

David Westebbe: It's pretty horrible that a perfectly good, cool-looking symbol, used by cultures all over the world is now associated primarily with the Nazis.

Celtic knots run a close second. Many of them are very very cool. But if you display them, people think you're a f**** Nazi.

Quite rightly the Nazis are disliked for many, many things. But people leave out the fact that they've ruined nice symbols.

Add a comment...

Post has attachment

Multicore versus SIMD instructions: the “fasta” case study

Public

Multicore versus SIMD instructions: the "fasta" case study https://lemire.me/blog/2018/01/02/multicore-versus-simd-instructions-the-fasta-case-study/

Show all 3 comments

Jan Moren: I'm not clear why you want to frame this as an either-or situation. SIMD and multithreading complement each other well, and all high performance code I know uses both.

Also, worth mentioning to readers, I think, that if you do any nontrivial amount of numerical computing in your code you probably should use a numerical library, and they are all using vectorization and threading already. You get a lot of the efficiency gains for free.

Dominic Amann: +Jan Moren on many embedded platforms getting any library "for free" is not a given.

Add a comment...

Post has attachment

Science and Technology links (December 29th, 2017)

Science and Technology links (December 29th, 2017) https://lemire.me/blog/2017/12/30/science-and-technology-links-december-29th-2017/

Add a comment...

Post has attachment

Science and Technology links (December 22nd, 2017)

Science and Technology links (December 22nd, 2017) https://lemire.me/blog/2017/12/22/science-and-technology-links-december-22nd-2017/

Bitcoins are electronic records that are meant to be used as currency. They have become increasingly popular and expensive. Reportedly, the famous investment bank Goldman Sachs

Add a comment...

Public

My powerful XPS13 laptop has been updating Windows for the last hour. What could possibly take so long?

Add a comment...

Post has attachment

If all your attributes are independent two-by-two… are all your attributes independent?

Public

If all your attributes are independent two-by-two… are all your attributes independent? [my worst title ever]

https://lemire.me/blog/2017/12/12/if-all-your-attributes-are-independent-two-by-two-are-all-your-attributes-independent/

Suppose that you are working on a business problem where you have multiple attributes... maybe you have a table with multiple columns such as age, gender, income, location, occupation.You might be interested in determining whether there are relations between some of these attributes. Maybe the