Solved

Intel Xeon workstation

Posted on 2013-06-20
12
345 Views
Last Modified: 2013-06-29
Dear all,

right now I am trying to buy a new workstation based on Xeon 2650 CPU, that Xeon has an architecture of supporting 2 x QPI link, do anyone know what use it is ?

I google that and it seems that this feature is talking about the data communication about CPU, RAM and RAID card/disk subsystem ?

please help to explain what use it is.
0
Comment
Question by:marrowyung
  • 6
  • 5
12 Comments
 
LVL 32

Expert Comment

by:_
ID: 39264205
{quick and dirty explanation}

Basically QPI is the new FSB.
So instead of having only one "road" through the motherboard between the cpu(s) and chip set (like the old Front Side Bus) to carry the "traffic",  you have 2 "roads" for it to travel on.
The chipsset(s) talk to the drives and other stuff you can plug into the computer (eg: usb).

Ram doesn't come into it, as that's a different "road".

Hopefully someone else can give a better description of it to you.
0
 
LVL 1

Author Comment

by:marrowyung
ID: 39264810
"Basically QPI is the new FSB.
So instead of having only one "road" through the motherboard between the cpu(s) and chip set (like the old Front Side Bus) to carry the "traffic",  you have 2 "roads" for it to travel on.
The chipsset(s) talk to the drives and other stuff you can plug into the computer (eg: usb)."

yeah, I know QPI is 2 way, it is also bi-direction.

how about between CPU to CPU ?

it seems only buit inside the CPU but not about the motherboard, right?

so as long as the motherboard suppor this CPU, then QPI take effect ?
0
 
LVL 32

Accepted Solution

by:
_ earned 500 total points
ID: 39264845
Not two-way (bi-directional). TWO roads. Both bi-directional.

Say 2 cpus with one QPI looks like this:

c \______________chipset
c/

Now 2 cpus with 2 QPI's:

c\/-----------------------|chipset  
c/\-----------------------|(that's suppose to be an X next to the cpu's)

so not only can the cpu's talk to each other, but share the link to the chipset, they can talk to each other and have their OWN link to the chipset. And if I understand it correctly, can use either link to do it.
The info I read described it as the whole thing is "networked together".
0
 
LVL 1

Author Comment

by:marrowyung
ID: 39264908
so one CPU can't fully utilize 2 xQPI link ?
0
 
LVL 32

Expert Comment

by:_
ID: 39264920
I haven't tried it or seen any mention of that specifically, so I can't say for sure, but I wouldn't think so.
Though it might get a slight improvement over a single QPI.
Depends on the workload.
0
Free Gift Card with Acronis Backup Purchase!

Backup any data in any location: local and remote systems, physical and virtual servers, private and public clouds, Macs and PCs, tablets and mobile devices, & more! For limited time only, buy any Acronis backup products and get a FREE Amazon/Best Buy gift card worth up to $200!

 
LVL 1

Author Comment

by:marrowyung
ID: 39276871
you are giving me the link of the same post.
0
 
LVL 1

Author Closing Comment

by:marrowyung
ID: 39276872
why can't see the option to add to the KB ?
0
 
LVL 32

Expert Comment

by:_
ID: 39276945
Thank you much.    : )
0
 
LVL 1

Author Comment

by:marrowyung
ID: 39276952
you are welcome as you helped me. keep watching my post and tell me something if you know the answer.

My new Workstation will be around 64GB of ECC RAM..
0
 
LVL 32

Expert Comment

by:_
ID: 39276974
I can do that.   ; )
0
 
LVL 1

Author Comment

by:marrowyung
ID: 39287745
I just ordered my new workstation based on E5-2650,...

64GB of RAM and it will run the adobe premium Pro CC and hopefully use 3D studio MAX.
0

Featured Post

Top 6 Sources for Identifying Threat Actor TTPs

Understanding your enemy is essential. These six sources will help you identify the most popular threat actor tactics, techniques, and procedures (TTPs).

Join & Write a Comment

More and more people are using the enhanced small form-factor pluggable (SFP+) tranceivers, and speed is of utmost importance. Testing of speeds are critical to ensure that the devices will meet the speed requirements. There are some testing challen…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now