Watch computer scientist Grace Hopper demonstrating the concept of a nanosecond.
Rear Admiral Grace Murray Hopper (December 9, 1906 – January 1, 1992) was an American computer scientist and United States Navy officer.
A pioneer in the field, she was one of the first programmers of the Harvard Mark I computer, and developed the first compiler for a computer programming language.She conceptualized the idea of machine-independent programming languages, which led to the development of COBOL, one of the first modern programming languages.
She is credited with popularizing the term “debugging” for fixing computer glitches (motivated by an actual moth removed from the computer). Because of the breadth of her accomplishments and her naval rank, she is sometimes referred to as “Amazing Grace.” The U.S. Navy destroyer USS Hopper (DDG-70) was named for her, as was the Cray XE6 “Hopper” supercomputer at NERSC.
-GeeksAreSexy
15 Comments
vaire2ubevery cool video
deathcowModern computers clocked upwards towards 4 ghz are having clock transistions in chunks of picoseconds now. Transmission of these signals around a circuit board no longer is simple! Many special design considerations come in to moving the data around. Wires on the circuit boards are setup as carefully impedance balanced transmission lines. Imagine that! Sitting at some microchip and having a clock transition sweeping by you and another clock wavefront coming in just a couple inches away.
BoneRemakeThis shizzle is why I come to videosift.
GenjiKilpatrick*le sigh
You're the only one that gets me.
>> ^BoneRemake:
This shizzle is why I come to videosift.
Asmosays...>> ^BoneRemake:
This shizzle is why I come to videosift.
Indeed. There's too much cool shit out there in the world not to have a place to share it.
rottenseedI adore this woman. I want more of her.
critical_dhttp://videosift.com/video/Grace-Hopper-on-Letterman
>> ^rottenseed:
I adore this woman. I want more of her.
MonkeySpanksays...This is why we have on-processor cache (L2, L3) in the first place. Even at the speed of light, the distance traveled between the processor and motherboard memory, when done a few billion times a second, starts to become a limiting factor on processing speed.
jonnyLolly lolly lolly, get your nanos here...
notarobotShe's brilliant!
bmacs27says...Latency's a bitch ain't she?
It's interesting, people always get all worked up over bandwidth. 99 times out of 100 it's long latencies you're noticing.
>> ^MonkeySpank:
This is why we have on-processor cache (L2, L3) in the first place. Even at the speed of light, the distance traveled between the processor and motherboard memory, when done a few billion times a second, starts to become a limiting factor on processing speed.
longde*quality
siftbotBoosting this quality contribution up in the Hot Listing - declared quality by longde.
skinnydaddy1says...Latency - The amount of time it takes from the moment the user first logs in to when real work is started.
I.E.- Jim logged in at 7am but after checking email, facebook, news and then the lunch menu. He did not start on the Presentation till around 11:30am.
marinarai have a douchebag comment but my clock speed is so high it can't make it onto this thread
Discuss...
Enable JavaScript to submit a comment.