Breaking News
Comments
Oldest First | Newest First | Threaded View
Bert22306
User Rank
CEO
re: Will Moore's Law doom multicore?
Bert22306   3/11/2013 8:19:47 PM
NO RATINGS
"Amdahl's Law tells us that even with an infinite number of cores, an application that is 50% parallelizable will get only a 2x speedup over a single-core design." The key words are "an application." There are often multiple applications vying for CPU cycles, all running at the same time. So in fact, I can show how a quad-core processor shows up as only 25 percent busy, or slightly more than that, when the same app running on a single core eats up 100 percent of CPU cycles. I've read, though, that memory buses of today show no improvement beyond what you can eek out of an 8-core processor. The problem being choreography, in essence.

pica0
User Rank
Rookie
re: Will Moore's Law doom multicore?
pica0   3/12/2013 2:11:25 PM
NO RATINGS
Many application used all day contain a damn lot of tasks that can be performed in parallel. Just take an editor frame as example: rendering, spell check and syntax or grammar check can be performed in seperate threads. The fact most application are designed with a single core in mind does not imply, the application does nit contain paralellism.



Most Recent Comments
Steve Manley
 
engineers
 
Weapon
 
rick merritt
 
rick merritt
 
Loser99
 
Aeroengineer
 
Aeroengineer
 
Aeroengineer
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
Post a comment
An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely unfamiliar. ...

Max Maxfield

What's the Best Traveling Toolkit?
Max Maxfield
13 comments
A few years ago at a family Christmas party, I won a pocket knife as part of a "Dirty Santa" game. This little scamp was a Buck 730 X-Tract. In addition to an incredibly strong and sharp ...

Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
10 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
41 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Top Comments of the Week
Flash Poll
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)