Article: Nehalem Performance Preview
By: David Kanter (dkanter.delete@this.realworldtech.com), April 8, 2009 9:11 am
Room: Moderated Discussions
slacker (s@lack.er) on 4/8/09 wrote:
---------------------------
>rwessel (robertwessel@yahoo.com) on 4/7/09 wrote:
>---------------------------
>>Have you considered using log-log scales for some of your charts? You're already
>>semi-log (the thread count axis is effectively log), on the independent axis on
>>some of these, and it might enhance clarity of the dependent axis were as well.
>
>I was going to say that the thread count axis should be converted to a linear axis.
>I was briefly confused when looking at it:
>
>http://www.realworldtech.com/includes/images/articles/Nehalem-Review-11.png
>
>Performance is roughly linear vs. thread count, so what's >the point in using log-log axes?
>
>
>Also, David: perhaps it's just me, but I found it strange >to use units of "Pixels/sec
>per Watt," and "BOPs/sec per Watt." To me, it would make >more sense to write Pixels/Joule
>and BOP/Joule, but I can understand how that might make >less-sense to an IT capacity
>planner who looks at things in terms of watts and amps.
So it ultimately depends if you want to look at energy or power. For servers, I think you've made the case that energy isn't what you optimize for since it's not a first order constraint. For a notebook, it's clear that energy is a first order constraint since that what you are limited to...
>Regardless, "BOPs/sec" should be changed to "BOPS," >because it stands for "Business Operations Per Second."
Yes, that's true.
David
---------------------------
>rwessel (robertwessel@yahoo.com) on 4/7/09 wrote:
>---------------------------
>>Have you considered using log-log scales for some of your charts? You're already
>>semi-log (the thread count axis is effectively log), on the independent axis on
>>some of these, and it might enhance clarity of the dependent axis were as well.
>
>I was going to say that the thread count axis should be converted to a linear axis.
>I was briefly confused when looking at it:
>
>http://www.realworldtech.com/includes/images/articles/Nehalem-Review-11.png
>
>Performance is roughly linear vs. thread count, so what's >the point in using log-log axes?
>
>
>Also, David: perhaps it's just me, but I found it strange >to use units of "Pixels/sec
>per Watt," and "BOPs/sec per Watt." To me, it would make >more sense to write Pixels/Joule
>and BOP/Joule, but I can understand how that might make >less-sense to an IT capacity
>planner who looks at things in terms of watts and amps.
So it ultimately depends if you want to look at energy or power. For servers, I think you've made the case that energy isn't what you optimize for since it's not a first order constraint. For a notebook, it's clear that energy is a first order constraint since that what you are limited to...
>Regardless, "BOPs/sec" should be changed to "BOPS," >because it stands for "Business Operations Per Second."
Yes, that's true.
David
Topic | Posted By | Date |
---|---|---|
Nehalem review up | David Kanter | 2009/04/07 02:43 AM |
Nehalem review up | noone | 2009/04/07 05:48 AM |
Strange jbb on Harpertown | Henrik S | 2009/04/07 07:29 AM |
Strange jbb on Harpertown | David Kanter | 2009/04/07 10:19 AM |
Strange jbb on Harpertown | Henrik S | 2009/04/07 08:33 PM |
Strange jbb on Harpertown | Chris | 2009/04/07 11:54 PM |
Strange jbb on Harpertown | Henrik S | 2009/04/08 01:40 AM |
Nehalem review up | Vincent Diepeveen | 2009/04/07 07:34 AM |
Nehalem review up | Jack | 2009/04/09 03:51 PM |
Nehalem review up | Vincent Diepeveen | 2009/04/10 12:58 AM |
Nehalem review up | Michael S | 2009/04/10 02:45 AM |
Nehalem review up | EduardoS | 2009/04/10 06:01 AM |
Nehalem review up | Michael S | 2009/04/10 06:56 AM |
Nehalem review up | Eugene Nalimov | 2009/04/10 08:12 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/10 09:10 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/10 01:49 PM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/11 06:13 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/11 10:30 AM |
Large pages | David Kanter | 2009/04/11 01:02 PM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/11 10:06 PM |
Choice of C compiler doesn't matter much for Java... | Paul | 2009/04/12 12:53 AM |
Choice of C compiler doesn't matter much for Java... | iz | 2009/04/12 01:59 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/12 06:37 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/12 07:08 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/12 08:25 AM |
Choice of C compiler doesn't matter much for Java... | EduardoS | 2009/04/12 04:24 PM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/12 09:18 PM |
Thread costs | David Kanter | 2009/04/12 11:12 PM |
Thread costs | Henrik S | 2009/04/14 01:08 PM |
Choice of C compiler doesn't matter much for Java... | Michael S | 2009/04/11 07:53 AM |
Choice of C compiler doesn't matter much for Java... | Henrik S | 2009/04/11 10:08 PM |
Nehalem review up | Vincent Diepeveen | 2009/04/11 03:50 PM |
Nehalem review up | Michael S | 2009/04/11 04:12 PM |
Nehalem review up | Vincent Diepeveen | 2009/04/12 02:01 AM |
Nehalem review up | Michael S | 2009/04/12 04:07 AM |
Nehalem review up | rwessel | 2009/04/07 01:01 PM |
Nehalem review up | slacker | 2009/04/08 08:11 AM |
Energy vs. power | David Kanter | 2009/04/08 09:11 AM |
Energy vs. power | Vincent Diepeveen | 2009/04/10 01:08 AM |
Energy vs. power | slacker | 2009/04/10 08:26 AM |
Energy vs. power | RagingDragon | 2009/04/10 09:19 AM |
Energy vs. power | David Kanter | 2009/04/10 10:47 AM |
Energy vs. power | Jack | 2009/04/10 03:44 PM |
Energy vs. power | slacker | 2009/04/10 06:00 PM |
Energy vs. power | Jack | 2009/04/10 06:31 PM |
Energy vs. power | David Kanter | 2009/04/10 11:16 PM |
Nehalem review up | rwessel | 2009/04/08 01:32 PM |
Minor font issue | gpriatko | 2009/04/07 03:35 PM |
Minor HTML issue | David Kanter | 2009/04/07 08:38 PM |
Minor HTML issue | David Kanter | 2009/04/07 08:39 PM |
Good work, i look forward to linux and SP2 numbers (NT) | PiedPiper | 2009/04/08 12:52 AM |
Nehalem review up | Joe Chang | 2009/04/10 02:59 AM |