| Author |
Message |
Rick Jones
Guest
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 Posted:
Mon Dec 13, 2004 11:58 pm Post subject:
Re: Pretty good explanation of x86-64 by HP |
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In comp.arch David Schwartz <davids@webmaster.com> wrote:
| Quote: | In typical Opteron setups (2-8 CPUs, using the Opteron's build
in SMP hardware), the latency difference between local and remote
memory accesses is so small that the benefits of treating it as NUMA
are typically outweighed by the costs.
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SPECweb99_SSL is probably atypical then (Yes, one of my favorite
benchmarks :) - the evolution of the tunes for Opteron systems on that
benchmark show the size of the Zeus tuanble "cache_small_file"
increasing to 90000 bytes. That brings many more of the URLs into the
"malloc" cache of Zeus where they are replicated per Zeus instance and
in this case then per-CPU (things being bound to CPUs) "Normal"
practice is to have cache_small_file be "NBPG"/numCPU to optimize the
memory comsumption.
It all depends of course:) Maybe that wasn't done for latency but to
cut-down the bandwidth consumed. Who knows - although I am interested
in trying to find-out :)
| Quote: | Generally, you just distribute the memory evenly and interleaved on
the nodes (if you can) to avoid overloading one memory controller
channel.
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FWIW, I've noticed that Node interleave is (or seems to be, it was set
that way on the first one I saw and had no indication from the source
that it had been altered) disabled by default on the Sun V20z's.
Anyone have data on how Node interleave defaults on other
Opteron-based systems?
rick jones
--
a wide gulf separates "what if" from "if only"
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to raj in cup.hp.com but NOT BOTH... |
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Scott Lurndal
Guest
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| Posted:
Tue Dec 14, 2004 11:04 pm Post subject:
Re: Pretty good explanation of x86-64 by HP |
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Rick Jones <foo@bar.baz.invalid> writes:
| Quote: |
FWIW, I've noticed that Node interleave is (or seems to be, it was set
that way on the first one I saw and had no indication from the source
that it had been altered) disabled by default on the Sun V20z's.
Anyone have data on how Node interleave defaults on other
Opteron-based systems?
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It defaults to "off" on Penguin systems, too.
scott |
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Andi Kleen
Guest
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| Posted:
Tue Dec 14, 2004 11:46 pm Post subject:
Re: Pretty good explanation of x86-64 by HP |
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Rick Jones <foo@bar.baz.invalid> writes:
| Quote: | FWIW, I've noticed that Node interleave is (or seems to be, it was set
that way on the first one I saw and had no indication from the source
that it had been altered) disabled by default on the Sun V20z's.
Anyone have data on how Node interleave defaults on other
Opteron-based systems?
|
As far as I know it's disabled by default on most shipping Opteron
servers. Only a few build-it-yourself dual motherboards have it
enabled by default.
For Linux use i would recommend to always disable it. The modern
kernel can do page interleaving on demand (with numactl or libnuma),
which is nearly as good, and most programs seem to just prefer
good memory latency.
-Andi |
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Israel T
Guest
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| Posted:
Wed Dec 15, 2004 4:40 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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lindahl@pbm.com (Greg Lindahl) writes:
| Quote: | benchmark 1 3.71 3.03 + 22 %
benchmark 2 3.76 3.29 + 14 %
benchmark 3 3.78 3.26 + 16 %
benchmark 4 3.79 3.45 + 10 %
benchmark 5 3.92 3.89 + 1 %
benchmark 6 3.88 3.71 + 5 %
These benchmarks were run with the best Opteron compiler, so this
scaling improvement was very good to see. And it's bigger than
"usually less than 10%".
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Averages out to 11 % .
Sounds like "usually less than 10%" may be right when talking about non scientific workloads. |
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Israel T
Guest
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| Posted:
Wed Dec 15, 2004 4:40 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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jsavard@excxn.aNOSPAMb.cdn.invalid (John Savard) writes:
| Quote: | As the posting in question was a text posting, this means that the
newsreader would have to guess at what constituted an URL, as well, with
no doubt occasional hilarious results.
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Sorry, you dont make sense.
You really should get a decent newsreader. |
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keith
Guest
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| Posted:
Wed Dec 15, 2004 9:41 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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On Wed, 15 Dec 2004 03:35:43 +0000, Israel T wrote:
| Quote: | jsavard@excxn.aNOSPAMb.cdn.invalid (John Savard) writes:
As the posting in question was a text posting, this means that the
newsreader would have to guess at what constituted an URL, as well, with
no doubt occasional hilarious results.
Sorry, you dont make sense.
You really should get a decent newsreader.
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Hmmm, I alwasy though Agent was fairly good. Perhaps yours can't show
headers? ...oh, another emacs bigot.
--
Keith |
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Israel T
Guest
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| Posted:
Wed Dec 15, 2004 10:04 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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keith <krw@att.bizzzz> writes:
| Quote: | Hmmm, I alwasy though Agent was fairly good. Perhaps yours can't show
headers?
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I used Agent for some years untill it's limitations became irritating.
| Quote: | ...oh, another emacs bigot.
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It is a matter of using the right tool for the job.
Emac's mail/news sub-system, Gnus is superb. |
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George Macdonald
Guest
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| Posted:
Thu Dec 16, 2004 2:22 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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On Tue, 14 Dec 2004 23:41:04 -0500, keith <krw@att.bizzzz> wrote:
| Quote: | On Wed, 15 Dec 2004 03:35:43 +0000, Israel T wrote:
jsavard@excxn.aNOSPAMb.cdn.invalid (John Savard) writes:
As the posting in question was a text posting, this means that the
newsreader would have to guess at what constituted an URL, as well, with
no doubt occasional hilarious results.
Sorry, you dont make sense.
You really should get a decent newsreader.
Hmmm, I alwasy though Agent was fairly good. Perhaps yours can't show
headers? ...oh, another emacs bigot.
|
Well jsavard is using an *old* version of Free Agent but even the 1.93 I'm
using doesn't have a right click and "Save Link Target As.." I dunno what
the big deal is on either side here - copy/paste of a URL is always coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
Rgds, George Macdonald
"Just because they're paranoid doesn't mean you're not psychotic" - Who, me?? |
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Yousuf Khan
Guest
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| Posted:
Thu Dec 16, 2004 4:40 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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George Macdonald wrote:
| Quote: | Well jsavard is using an *old* version of Free Agent but even the 1.93 I'm
using doesn't have a right click and "Save Link Target As.." I dunno what
the big deal is on either side here - copy/paste of a URL is always coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
|
I've switched over to Thunderbird now for all mail and news (except
binary news). Agent is still the one to use for binary news. Outlook
Express is still the one to use to gather dust. :-)
Yousuf Khan |
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Stephen Fuld
Guest
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| Posted:
Thu Dec 16, 2004 4:40 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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"George Macdonald" <fammacd=!SPAM^nothanks@tellurian.com> wrote in message
news:h490s05odf9rsmng4pvhnl3ka81hfijnjq@4ax.com...
snip
| Quote: | Well jsavard is using an *old* version of Free Agent but even the 1.93 I'm
using doesn't have a right click and "Save Link Target As.." I dunno what
the big deal is on either side here - copy/paste of a URL is always coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to
turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
|
This is somewhat off topic, but there is a simple fix for the "plug-in"
problem. Check out the adobe reader speedup at
http://www.tnk-bootblock.co.uk/prods/misc/index.php
It takes a few seconds to run and makes a noticable difference in the load
times from then on.
--
- Stephen Fuld
e-mail address disguised to prevent spam |
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George Macdonald
Guest
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| Posted:
Thu Dec 16, 2004 5:33 pm Post subject:
Re: Pretty good explanation of x86-64 by HP |
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On Thu, 16 Dec 2004 00:11:25 GMT, "Stephen Fuld"
<s.fuld@PleaseRemove.att.net> wrote:
| Quote: |
"George Macdonald" <fammacd=!SPAM^nothanks@tellurian.com> wrote in message
news:h490s05odf9rsmng4pvhnl3ka81hfijnjq@4ax.com...
snip
Well jsavard is using an *old* version of Free Agent but even the 1.93 I'm
using doesn't have a right click and "Save Link Target As.." I dunno what
the big deal is on either side here - copy/paste of a URL is always coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to
turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
This is somewhat off topic, but there is a simple fix for the "plug-in"
problem. Check out the adobe reader speedup at
http://www.tnk-bootblock.co.uk/prods/misc/index.php
It takes a few seconds to run and makes a noticable difference in the load
times from then on.
|
Thanks - sad that we need this stuff but.........
Rgds, George Macdonald
"Just because they're paranoid doesn't mean you're not psychotic" - Who, me?? |
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George Macdonald
Guest
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| Posted:
Thu Dec 16, 2004 5:33 pm Post subject:
Re: Pretty good explanation of x86-64 by HP |
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On Wed, 15 Dec 2004 20:58:28 -0500, Yousuf Khan <bbbl67@ezrs.com> wrote:
| Quote: | George Macdonald wrote:
Well jsavard is using an *old* version of Free Agent but even the 1.93 I'm
using doesn't have a right click and "Save Link Target As.." I dunno what
the big deal is on either side here - copy/paste of a URL is always coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
I've switched over to Thunderbird now for all mail and news (except
binary news). Agent is still the one to use for binary news. Outlook
Express is still the one to use to gather dust. :-)
|
Thanks but even that will not fix the click throughs where the link does
not point to a .PDF or whatever directly. I'm going to take a look at
Firefox/Thunderbird after the holiday season - need to get confidence with
new tools which are used for Web purchasing, lest I get hung in the middle
of a transaction
Rgds, George Macdonald
"Just because they're paranoid doesn't mean you're not psychotic" - Who, me?? |
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Bill Davidsen
Guest
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| Posted:
Fri Dec 17, 2004 4:40 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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Yousuf Khan wrote:
| Quote: | George Macdonald wrote:
Well jsavard is using an *old* version of Free Agent but even the 1.93
I'm
using doesn't have a right click and "Save Link Target As.." I dunno
what
the big deal is on either side here - copy/paste of a URL is always
coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to
turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
I've switched over to Thunderbird now for all mail and news (except
binary news). Agent is still the one to use for binary news. Outlook
Express is still the one to use to gather dust. :-)
|
Pan. Not all that great for text, doesn't seem to want to forward
articles as mail, but for multipart binaries it is the nuts.
--
bill davidsen (davidsen@darkstar.prodigy.com)
SBC/Prodigy Yorktown Heights NY data center
Project Leader, USENET news
http://newsgroups.news.prodigy.com |
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keith
Guest
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| Posted:
Fri Dec 17, 2004 4:40 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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On Fri, 17 Dec 2004 02:51:02 +0000, Larry Elmore wrote:
| Quote: | keith wrote:
On Fri, 17 Dec 2004 00:47:40 +0000, Larry Elmore wrote:
Yousuf Khan wrote:
George Macdonald wrote:
Well jsavard is using an *old* version of Free Agent but even the 1.93
I'm
using doesn't have a right click and "Save Link Target As.." I dunno
what
the big deal is on either side here - copy/paste of a URL is always
coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to
turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
I've switched over to Thunderbird now for all mail and news (except
binary news). Agent is still the one to use for binary news. Outlook
Express is still the one to use to gather dust. :-)
I thought it gathered flies...
Flies? ...perhaps bugs or viri!
Well, I was thinking "draws flies" in the way dog shit does, but I
didn't word that well. :-(
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You did well enuff. I wuz trying to bring your virtual-visual back to
computereese. ;-)
--
Keith |
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Larry Elmore
Guest
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| Posted:
Fri Dec 17, 2004 4:40 am Post subject:
Re: Pretty good explanation of x86-64 by HP |
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keith wrote:
| Quote: | On Fri, 17 Dec 2004 00:47:40 +0000, Larry Elmore wrote:
Yousuf Khan wrote:
George Macdonald wrote:
Well jsavard is using an *old* version of Free Agent but even the 1.93
I'm
using doesn't have a right click and "Save Link Target As.." I dunno
what
the big deal is on either side here - copy/paste of a URL is always
coming
up as a nuisance for file downloads, especially with the Adobe reader 6.0
being so damned slow to get started - the plugin has to load its err,
plugins to get started and then you also have to have it configured to
turn
off "fast web view" to get the whole document without paging through the
bugger... all a royal PITA.
I've switched over to Thunderbird now for all mail and news (except
binary news). Agent is still the one to use for binary news. Outlook
Express is still the one to use to gather dust. :-)
I thought it gathered flies...
Flies? ...perhaps bugs or viri!
|
Well, I was thinking "draws flies" in the way dog shit does, but I
didn't word that well. :-( |
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