Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 2   >   >>
Wobbly
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
Wobbly   9/10/2012 3:25:17 PM
NO RATINGS
That is the whole point. They are redesiging the entire processor to be on a generic carrier, so that it can be easily swapped. On low power, high efficiency cores, the heat sink requirements are much less, so the physical design is easier.

david.may
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
david.may   6/29/2012 6:04:49 AM
NO RATINGS
what's people's opinion on this new Ram cube option given the new membership ? and the fact they say it has even greater potential speed than wideIO http://denalimemoryreport.wordpress.com/2012/06/28/arm-hp-and-sk-hynix-join-hybrid-memory-cube-consortium-hmcc-first-spec-due-by-end-of-year/#comment-350

david.may
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
david.may   6/26/2012 7:16:52 PM
NO RATINGS
that seems simple enough when you make these rack of ARM on SODIMM carrier with 4 SOC per SODIMM, and move the RAM on these to the main daughter server board you make sure to use Wide IO as per Samsung's ARM speced Block. the key is to keep as much generic kit as you can from the mobile space upgraded to the servers space requirement today, then slowly or even faster move all of today's dual/quad mobile and static SOC home devices into that same ARM on SODIMM + daughter board configuration... presto facebook or their future agents can sell these older ARM on SODIMM SOCK + daughter boards to their end users :) every one wins and make a profit as one example.

jeremybirch
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
jeremybirch   6/26/2012 4:00:59 PM
NO RATINGS
surely the problem here is that if you upgrade a 1 core cpu card with a 2 or 4 core one, that you will be expecting 4 times the memory bandwidth. It is unlikely you would have designed your system to have 4 times the necessary memory bandwidth to start with, so just updating the cores will be less than effective as they will clash for memory resource. I presume that most of the work FB's servers are doing are very short transactions (eg when someone puts a short message on a page) so processors will be constantly having to get new data as they swap from serving one user to serving another. This implies huge disk and/or internal network bandwidth to fetch that user's page. Unless of course they are planning to keep each of the 1billion accounts alive in DRAM in their farm 24/7 - in which case I expect the memory manufacturers will be rubbing their hands with glee.

Kevin Krewell
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
Kevin Krewell   6/25/2012 7:03:46 PM
NO RATINGS
Rick, I'm not covering Oracle/SPARC for The Linley Group, so I haven't talked to Oracle about it. Based on what I know about Oracle, I wouldn't think it's very likely. Kevin

rick merritt
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
rick merritt   6/25/2012 5:25:42 AM
NO RATINGS
@Kevin Krewell: Thanks for the clarification re Tilera. Think we will see Oracle or an Oracle licensee do anything with Sparc in this market?

Kevin Krewell
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
Kevin Krewell   6/24/2012 7:53:26 PM
NO RATINGS
Hi Rick, A minor correction: Tilera's processor core has a "MIPS-like" instruction set, but it is not a MIPS licensed processor, so calling it MIPS-based is misleading. Ironically, one of the first "wimpy core" server processor was the "Niagara" UltraSPARC-T1, but that line of servers has not gotten much attention of late.

green_is_now
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
green_is_now   6/24/2012 3:50:18 PM
NO RATINGS
Probably more about supporting upstream procesors that can be pin compatible in a family. Quad ARMs are not ready except from Invidia. Duals are abundant and will be priced accordingly. If you can drop in a quad A9 in 18 months it will be cheap because everyone will have figured it out. The dual 15 with dual A9 would be nice to be in a version that can drop into the same slot. Evn if it gives up some features of its bigger pin count brothers...and on and on. The CPU churn rate is mutch faster than the rack-server infrastructure evolves. so it makes sense to want to put a few releases of CPU's in the same infrastructure. Or rip it out each time you want to go to the next 10% improvement?

green_is_now
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
green_is_now   6/24/2012 3:40:09 PM
NO RATINGS
Why replace? Why not expand with the new agnostic topology? (not just the cpu per say but the echosystem that surounds it as well. Is the wimpy cpu just about serving up utube and facebook type web page feeds? whats the need difference for a data streaming for a financial application for example v.s. a utube video?

green_is_now
User Rank
Author
re: Facebook likes wimpy cores, CPU subscriptions
green_is_now   6/24/2012 3:33:36 PM
NO RATINGS
testing

Page 1 / 2   >   >>


Most Recent Comments
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

March 28 is Arduino Day -- Break Out the Party Hats!
Max Maxfield
6 comments
Well, here's a bit of a conundrum. I just received an email from my chum David Ashton who hails from the "Unfinished Continent" Down Under. David's message was short and sweet; all he said ...

Bernard Cole

A Book For All Reasons
Bernard Cole
1 Comment
Robert Oshana's recent book "Software Engineering for Embedded Systems (Newnes/Elsevier)," written and edited with Mark Kraeling, is a 'book for all reasons.' At almost 1,200 pages, it ...

Martin Rowe

Leonard Nimoy, We'll Miss you
Martin Rowe
5 comments
Like many of you, I was saddened to hear the news of Leonard Nimoy's death. His Star Trek character Mr. Spock was an inspiration to many of us who entered technical fields.

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
16 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Radio
LATEST ARCHIVED BROADCAST
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Flash Poll