On Friday, March 09, 2012 04:33:30 AM John R Pierce wrote:
> gaming uses the graphics card for rendering, yes. by 'rendering', I
> was thinking more of production rendering, like Pixar does when making a
> movie, using clusters of 100s of multicore nodes to render frames.
The same engine that
On 03/08/2012 11:45 PM, Kaushal Shriyan wrote:
> Hi,
>
> Do we need HT enabled on CentOS release 5.5 (Final) and Kernel Version :-
> 2.6.18-194.el5
> Please help me understand the pros and cons of having HT enabled or
> disabled on the Server Dell R 710.
>
> cat /proc/cpuinfo -> http://fpaste.org/K
-Original Message-
From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf
Of Peter Kjellström
Sent: den 9 mars 2012 11:05
To: centos@centos.org
Subject: Re: [CentOS] HT (Hyper Threading) on CentOS 5.5
> I know there might be some negative performance issues w
On Friday 09 March 2012 08.44.53 Sorin Srbu wrote:
...
> What are some of the cases it would be practical/best to have it off?
>
> I know there might be some negative performance issues with certain
> applications, but would you notice it in day-to-day use?
Negative performance due to HT comes in
-Original Message-
From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf
Of John R Pierce
Sent: den 9 mars 2012 10:34
To: centos@centos.org
Subject: Re: [CentOS] HT (Hyper Threading) on CentOS 5.5
On 03/09/12 1:28 AM, Sorin Srbu wrote:
> 3D animation rendering
On 03/09/12 1:28 AM, Sorin Srbu wrote:
> 3D animation rendering as in gaming? That would explain the use of GPU's in
> bigger calculation clusters I guess.
gaming uses the graphics card for rendering, yes. by 'rendering', I
was thinking more of production rendering, like Pixar does when making
-Original Message-
From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf
Of John R Pierce
Sent: den 9 mars 2012 10:17
To: centos@centos.org
Subject: Re: [CentOS] HT (Hyper Threading) on CentOS 5.5
mostly, numerical scientific processing, and various sorts of
On 03/09/12 12:32 AM, Kaushal Shriyan wrote:
> Not sure i understand about your earlier comment regarding pure floating
> point compute, help me understand with some examples.
mostly, numerical scientific processing, and various sorts of multimedia
work, such as batch converting HDTV video format
On Fri, Mar 9, 2012 at 1:35 PM, Sorin Srbu wrote:
> -Original Message-
> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On
> Behalf
> Of John R Pierce
> Sent: den 9 mars 2012 08:54
> To: centos@centos.org
> Subject: Re: [CentOS] HT (Hyper Thr
On 03/09/12 12:02 AM, Kaushal Shriyan wrote:
> This servers would be used for MySQL DB purpose. I suppose it would be IO
> bound instead of CPU cycles. Please help me understand.
if you have a large number of client->sql connections and concurrent
queries, and lots of ram for caching, more hardwa
-Original Message-
From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf
Of John R Pierce
Sent: den 9 mars 2012 08:54
To: centos@centos.org
Subject: Re: [CentOS] HT (Hyper Threading) on CentOS 5.5
On 03/08/12 11:44 PM, Sorin Srbu wrote:
> I know there might be s
On Fri, Mar 9, 2012 at 1:24 PM, John R Pierce wrote:
> On 03/08/12 11:44 PM, Sorin Srbu wrote:
> > I know there might be some negative performance issues with certain
> > applications, but would you notice it in day-to-day use?
>
> if you're using the server for pure floating point compute, don't
On 03/08/12 11:44 PM, Sorin Srbu wrote:
> I know there might be some negative performance issues with certain
> applications, but would you notice it in day-to-day use?
if you're using the server for pure floating point compute, don't run
more threads than you have actual cores. high concurrenc
-Original Message-
From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf
Of fred smith
Sent: den 9 mars 2012 07:17
To: CentOS mailing list
Subject: Re: [CentOS] HT (Hyper Threading) on CentOS 5.5
On Fri, Mar 09, 2012 at 11:15:29AM +0530, Kaushal Shriyan wrote:
>
On Fri, Mar 09, 2012 at 11:15:29AM +0530, Kaushal Shriyan wrote:
> Hi,
>
> Do we need HT enabled on CentOS release 5.5 (Final) and Kernel Version :-
> 2.6.18-194.el5
I don't think it harms anything to have it enabled, and there may be
some small performance gains in some cases. I'd leave it on.
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