On Wed, Sep 17, 2008 at 11:54:35AM -0400, Joe Landman wrote:
>> A few questions (not necessarily expecting a response):
>>
>> POSIX?
>> VERBS?
>> Kernel latency and scheduler control?
>
> Don't mistake me for a w2k8 apologist. I reamed them pretty hard on the
> lack of a real posix infrastructur
The scientific application used is Dl-Poly - 2.17.
Tested with Pathscale and Intel compilers on AMD Opteron Quad core. The time
figures mentioned were taken from DL-Poly output file. Also I had used time
command. Here are the results:
AMD-2.3GHz (32 GB RAM)
INTEL-2.33GH
Sangamesh B wrote:
Hi Tim,
Recently I benchmarked a Fortran based Scientific application on both
Intel Xeon Quad core and AMD Opteron Quad core with RHEL 5. Following are
the results:
AMD-2.3GHz
INTEL-2.33GHz
1. Serial
On Wed, Sep 17, 2008 at 07:51:01PM -0500, Rahul Nabar wrote:
> On Wed, Sep 17, 2008 at 7:23 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
> > Rahul Nabar wrote:
> >
> > On Wed, Sep 17, 2008 at 4:05 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
> > Well, I don't have "bondable" hardware so I'm reall
On Wed, 17 Sep 2008, Gerry Creager wrote:
The CX1 looks like something I'd love next to my desk -- with Linux on it --
to accomplish testing before I take something to the big iron. It might even
allow me to pre- and post-process my data for hurricane WRF runs. It's not
hefty enough to let m
On Wed, 17 Sep 2008, Eric Thibodeau wrote:
David Mathog wrote:
Getting back to the original subject, what would this Cray box "look
like" when it is running windows? Does it show up as one desktop for
everything (basically an SMP machine), one desktop per blade, one per
processor(or core), or
On Wed, Sep 17, 2008 at 7:23 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
> Rahul Nabar wrote:
>
> On Wed, Sep 17, 2008 at 4:05 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
> Well, I don't have "bondable" hardware so I'm really interested in how you
> technically manage this one at the end.
>
Th
On Wed, Sep 17, 2008 at 4:05 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
>Well, apart from the fact that ssh is compressed and, as Digo pointed out and
>that 47 MB/sec is probably your HDD's transfer capacity as >Shannon pointed
>out, also keep in mind your bus's capacity (
>http://en.wikiped
John Vert wrote:
Eric,
I don’t have a CX1 (yet!) but I expect the development experience will
be the usual Windows HPC model. Design/code/test parallel code in
Visual Studio then do test runs on the cluster. With Visual C++ and
Windows HPC, you have MPI, OpenMP, threading, and an MPI debu
Hello David and other Beowulf fans
Please, correct me if I am wrong.
Looking at the Cray CX1 promotional materials (brochure, movie,
press-releases),
I've got the impression that it is just a nicely packed set of blade nodes,
with GigE and IB, not very different from many clusters, except for
Rahul Nabar wrote:
On Wed, Sep 17, 2008 at 7:23 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
Rahul Nabar wrote:
On Wed, Sep 17, 2008 at 4:05 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
Well, I don't have "bondable" hardware so I'm really interested in how you
technically manage this one a
David Mathog wrote:
Getting back to the original subject, what would this Cray box "look
like" when it is running windows? Does it show up as one desktop for
everything (basically an SMP machine), one desktop per blade, one per
processor(or core), or even virtualized, with more than one desktop
How does all this change when you use a PGO optimized executable on
both sides?
Vincent
On Sep 18, 2008, at 2:34 AM, Eric Thibodeau wrote:
Vincent Diepeveen wrote:
Nah,
I guess he's referring to sometimes it's using single precision
floating point
to get something done instead of double
Vincent Diepeveen wrote:
Nah,
I guess he's referring to sometimes it's using single precision
floating point
to get something done instead of double precision, and it tends to keep
sometimes stuff in registers.
That isn't a problem necessarily, but if i remember well floating
point state
co
Rahul Nabar wrote:
On Wed, Sep 17, 2008 at 4:05 PM, Eric Thibodeau <[EMAIL PROTECTED]> wrote:
Well, apart from the fact that ssh is compressed and, as Digo pointed out and that 47
MB/sec is probably your HDD's transfer capacity as >Shannon pointed out, also keep in
mind your bus's capacity
Getting back to the original subject, what would this Cray box "look
like" when it is running windows? Does it show up as one desktop for
everything (basically an SMP machine), one desktop per blade, one per
processor(or core), or even virtualized, with more than one desktop per
core? In terms of
On Wed, 17 Sep 2008, Lux, James P wrote:
I think part of the problem in the Windows world is the incredible
diversity of applications (by which I include websites with significant
client side processing) that wind up being run on them. Rich growth
medium, lots of spontaneous mutations.
When you
On Wed, 17 Sep 2008, Joe Landman wrote:
Have you ever administered a lab full of these units? You need as much help
as you can get to administer the windows machines. Sadly, while claims of
there being more windows admins are true (thats not the sad part) you need
(far) more to administer fe
Nah,
I guess he's referring to sometimes it's using single precision
floating point
to get something done instead of double precision, and it tends to keep
sometimes stuff in registers.
That isn't a problem necessarily, but if i remember well floating
point state
could get wiped out when s
>
> Translation: "bureaucracy is expensive".
You betcha.. Partly it's paranoia.. A lot of money goes into making sure that
the taxpayer gets "the best deal".
On the other hand, that's not entirely paranoid. Government procurements are a
target rich environment for would be thieves.
>
> > the
John Hearns wrote:
[...]
Just let me correct you there. Surely PDP-8s were calculators or Data
Processing whatchamacallits,
and emphatically NOT Computer Systems.
(A history lesson is called for here - I cannot remember the exact
terminology which allowed PDPs to be sold to individual labs and
Rahul Nabar wrote:
I was experimenting with using channel bonding my twin eth ports to
get a combined bandwidth of (close to) 2 Gbps. The two relevant modes
were 4 (802.3ad) and 6 (alb=Adaptive Load Balancing). I was trying to
compare performance for both.
Before running any sophisticated tests
Tim Cutts wrote:
On 17 Sep 2008, at 2:22 pm, Lux, James P wrote:
But how is that any different than having a PC on your desk?
I see the deskside supercomputer as a revisiting of the "workstation"
class computer. Used to be that PCs and Apples were what sat on most
peoples desks, but some h
Eric Thibodeau wrote:
Gus Correa wrote:
BTW, the Cray web site was changed today,
and now I can configure/price the CX1 from Linux/Firefox.
I think I heard the "Oh crap!" from Cray from here when one of their
employees must have noticed the remarks on the BW ml ;)...this might
also explain why
Lux, James P wrote:
-Original Message-
From: Joe Landman [mailto:[EMAIL PROTECTED]
Sent: Wednesday, September 17, 2008 12:54 PM
To: Robert G. Brown
Cc: David Mathog; beowulf@beowulf.org; Lux, James P
Subject: Re: [Beowulf] Re: MS Cray
Robert G. Brown wrote:
The real question is
Greg Lindahl wrote:
On Wed, Sep 17, 2008 at 03:43:36PM -0400, Eric Thibodeau wrote:
Also, note that I've had issues with icc
generating really fast but inaccurate code (fp model is not IEEE *by
default*, I am sure _everyone_ knows this and I am stating the obvious
here).
All mode
Lux, James P wrote:
When you get to large desktop rollouts, Windows can have fairly low
admin overhead, but it's done by restricting flexibility (e.g. SMS,
boot from the network, etc.) to reduce the nutritional value of the
Sadly, I haven't seen this at the large customer rollouts I have seen.
"Lux, James P" <[EMAIL PROTECTED]> wrote:
> Well.. That's always a trade.. Buying comes out of the capital bucket,
> leasing comes out of the expense bucket, and they have very different
> treatments, accounting wise. Don't forget that JPL works on a "cost
> reimbursement" basis: that is, we spe
> -Original Message-
> From: Joe Landman [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, September 17, 2008 12:54 PM
> To: Robert G. Brown
> Cc: David Mathog; beowulf@beowulf.org; Lux, James P
> Subject: Re: [Beowulf] Re: MS Cray
>
>
>
> Robert G. Brown wrote:
>
> > The real question is why an
Lux, James P wrote:
I suspect Microsoft has been listening here. I also suspect this
machine will do ok in the business world, but somehow I
doubt they're
gonna see significant headway in a lot of the scientific
arenas.
Of course MS is on the list. Why not? Loo
On Wed, Sep 17, 2008 at 03:43:36PM -0400, Eric Thibodeau wrote:
> Also, note that I've had issues with icc
> generating really fast but inaccurate code (fp model is not IEEE *by
> default*, I am sure _everyone_ knows this and I am stating the obvious
> here).
All modern, high-performance co
> >>
> >> I suspect Microsoft has been listening here. I also suspect this
> >> machine will do ok in the business world, but somehow I
> doubt they're
> >> gonna see significant headway in a lot of the scientific
> arenas.
Of course MS is on the list. Why not? Look back through the archives w
> -Original Message-
> From: Robert G. Brown [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, September 17, 2008 12:08 PM
> To: David Mathog
> Cc: beowulf@beowulf.org; Lux, James P
> Subject: Re: [Beowulf] Re: MS Cray
>
> On Wed, 17 Sep 2008, David Mathog wrote:
>
> > Let "a few hundred" = $200
Robert G. Brown wrote:
The real question is why an admin-rich environment with lots of full
time admins would ever buy into such a deal. If you've got a full time
admin ANYWAY, paying $150/month for support on top of this (beyond the
cost of the hardware is just insane.
Have you ever admini
Sangamesh B wrote:
Hi Tim,
Recently I benchmarked a Fortran based Scientific application on
both Intel Xeon Quad core and AMD Opteron Quad core with RHEL 5.
Following are the results:
AMD-2.3GHz
INTEL-2.33GHz
1
Gus Correa wrote:
Hi Gerry and Beowulf fans
Gerry Creager wrote:
Gus Correa wrote:
Here is the link to the CX1 on the Cray web site:
http://www.cray.com/products/CX1.aspx
You need MS Explorer to customize/price it.
I just knew you had to be wrong, but sure enough, I can't see config
opt
On Wed, 17 Sep 2008, David Mathog wrote:
Let "a few hundred" = $200, and of course there are 36 months in 3
years, so JPL pays the vendor $7200 for each machine, plus "support" for
this term. At the end of the lease the vendor gets the computer back,
and they probably sell it for a few hundred
> -Original Message-
> From: David Mathog [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, September 17, 2008 10:40 AM
> To: beowulf@beowulf.org
> Cc: Lux, James P
> Subject: Re: MS Cray
>
> "Lux, James P" <[EMAIL PROTECTED]> wrote:
>
> > The other, here at JPL,
>
> I have heard about this c
Recently I benchmarked a Fortran based Scientific application on both
Intel Xeon Quad core and AMD Opteron Quad core with RHEL 5. Following are
the results:
AMD-2.3GHz INTEL-2.33GHz
1. Serial 147.719 73.952 sec
2. Parallel 4 core 39.798
Hi Gerry and Beowulf fans
Gerry Creager wrote:
Gus Correa wrote:
Here is the link to the CX1 on the Cray web site:
http://www.cray.com/products/CX1.aspx
You need MS Explorer to customize/price it.
I just knew you had to be wrong, but sure enough, I can't see config
options.
Thanks fo
"Lux, James P" <[EMAIL PROTECTED]> wrote:
> The other, here at JPL,
I have heard about this contract before - and in my opinion, it is a
horrible deal. The taxpayers get reamed and the vendor makes out like a
bandit.
(SNIP)
>At any given time, there's a dozen or so kinds of computers
>(deskt
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joshua
Baker-LePain
Sent: Wednesday, September 17, 2008 9:24 AM
To: Gerry Creager
Cc: Beowulf
Subject: Re: [Beowulf] MS Cray
On Wed, 17 Sep 2008 at 8:22am, Gerry Creager wrote
> Gus Correa wrote:
>>
>> Here is the link to the CX1 o
From: John Hearns [mailto:[EMAIL PROTECTED]
Sent: Wednesday, September 17, 2008 9:40 AM
To: Lux, James P; beowulf@beowulf.org
Subject: Re: [Beowulf] MS Cray
. When mainframes first entered the halls of academe, I'm sure the
same sort of discussions arose. Heck, it's why computers like t
Joe Landman wrote:
Eric Thibodeau wrote:
Joe Landman wrote:
Gus Correa wrote:
Otherwise, your "newbie scientist" can put his/her earbuds and pump
up the volume on his Ipod,
while he/she navigates through the Vista colorful 3D menus.
Owie I can just imagine the folks squawking about th
Gus Correa wrote:
Dear Beowulf fans
Since I posted the Cray CX1 announcement,
just to be fair to other players, here are some of them:
1) SiCortex has a Linux and MIPS (72 processors)
based "deskside supercomputer".
They claim it to work with 300W of power.
Of course, being Linux, it require
Here's another approach at saturating a network link using a client that works
on a variety of os platforms:
FileZilla
Site Manager -> Transfer settings -> Maximum number of connections [10]
It helps if you have a number of not-small [> 10MB] files laying around in a
test directory.
-G
Ga
Joshua Baker-LePain wrote:
Also, as one would expect, the hardware premium is hefty. A compute
blade with dual Xeon E5462s, 16GB RAM (8x2GB), and an 80GB HDD is $6656.
Without even trying too hard I can get a similarly configured 1U node
for $4400. So that's a 50% markup on nodes, not to m
2008/9/17 Lux, James P <[EMAIL PROTECTED]>
>
> . When mainframes first entered the halls of academe, I'm sure the same
> sort of discussions arose. Heck, it's why computers like the PDP-8 were
> invented.
>
> Jim
>
Just let me correct you there. Surely PDP-8s were calculators or Data
Processing
Dear Beowulf fans
Since I posted the Cray CX1 announcement,
just to be fair to other players, here are some of them:
1) SiCortex has a Linux and MIPS (72 processors)
based "deskside supercomputer".
They claim it to work with 300W of power.
Of course, being Linux, it requires Linux literacy to u
On Wed, 17 Sep 2008 at 8:22am, Gerry Creager wrote
Gus Correa wrote:
Here is the link to the CX1 on the Cray web site:
http://www.cray.com/products/CX1.aspx
You need MS Explorer to customize/price it.
I just knew you had to be wrong, but sure enough, I can't see config options.
It's a sh
Lux, James P wrote:
>
>
>
>
> But how is that any different than having a PC on your desk?
>
> I see the deskside supercomputer as a revisiting of the
> "workstation" class computer. Used to be that PCs and Apples were
> what sat on most peoples desks, but some had Apollo or Sun o
Eric Thibodeau wrote:
Joe Landman wrote:
Gus Correa wrote:
Otherwise, your "newbie scientist" can put his/her earbuds and pump
up the volume on his Ipod,
while he/she navigates through the Vista colorful 3D menus.
Owie I can just imagine the folks squawking about this at SC08
"Yes fol
-Original Message-
From: Tim Cutts [mailto:[EMAIL PROTECTED]
Sent: Wednesday, September 17, 2008 6:52 AM
To: Lux, James P
Cc: Prentice Bisbal; Beowulf
Subject: Re: [Beowulf] MS Cray
On 17 Sep 2008, at 2:22 pm, Lux, James P wrote:
> But how is that any different than having a PC on your
> [mailto:[EMAIL PROTECTED] On Behalf Of Huw Lynes
> On Wed, 2008-09-17 at 08:45 -0500, John Leidel wrote:
> > I almost hate to throw this one out there, but does anyone
> remember the
> > SGI deskside series? Challenge, Origin, Onyx
> >
>
> Having experience of all three, I suggest that
On Wed, 2008-09-17 at 08:45 -0500, John Leidel wrote:
> I almost hate to throw this one out there, but does anyone remember the
> SGI deskside series? Challenge, Origin, Onyx
>
Having experience of all three, I suggest that it's a bit of a stretch
to refer to any of those as "deskside".
I'
Rahul Nabar wrote:
I was experimenting with using channel bonding my twin eth ports to
get a combined bandwidth of (close to) 2 Gbps. The two relevant modes
were 4 (802.3ad) and 6 (alb=Adaptive Load Balancing). I was trying to
compare performance for both.
Before running any sophisticated tests
I have Cat6 cabling on the cluster. Would any of the 10 Gb switches use Cat6
cable, or is 10Gb still locked into Cx4/fiber?
Tom
On Tue, Sep 16, 2008 at 10:03 AM, John Hearns <[EMAIL PROTECTED]>wrote:
>
>
> 2008/9/16 Greg Lindahl <[EMAIL PROTECTED]>
>
>> I have a bunch of 1gig switches with CX4 1
Hi Tim,
Recently I benchmarked a Fortran based Scientific application on both
Intel Xeon Quad core and AMD Opteron Quad core with RHEL 5. Following are
the results:
AMD-2.3GHz
INTEL-2.33GHz
1. Serial 1
On Monday 08 September 2008 21:30:03 Rahul Nabar wrote:
> I was experimenting with using channel bonding my twin eth ports to
> get a combined bandwidth of (close to) 2 Gbps. The two relevant modes
> were 4 (802.3ad) and 6 (alb=Adaptive Load Balancing). I was trying to
> compare performance for bot
On Wed, 2008-09-17 at 10:01 -0400, Joe Landman wrote:
> Gerry Creager wrote:
>
> > The CX1 looks like something I'd love next to my desk -- with Linux on
> > it -- to accomplish testing before I take something to the big iron. It
>
> This is something I suspect you will be able to do. The CX1
On 17 Sep 2008, at 2:22 pm, Lux, James P wrote:
But how is that any different than having a PC on your desk?
I see the deskside supercomputer as a revisiting of the
"workstation" class computer. Used to be that PCs and Apples were
what sat on most peoples desks, but some had Apollo or Sun
Joe Landman wrote:
Gus Correa wrote:
Otherwise, your "newbie scientist" can put his/her earbuds and pump
up the volume on his Ipod,
while he/she navigates through the Vista colorful 3D menus.
Owie I can just imagine the folks squawking about this at SC08
"Yes folks, you need a Cray sup
Lux, James P wrote:
But how is that any different than having a PC on your desk?
I see the deskside supercomputer as a revisiting of the
“workstation” class computer. Used to be that PCs and Apples were
what sat on most peoples desks, but some had Apollo or Sun or Perq
wo
Gerry Creager wrote:
The CX1 looks like something I'd love next to my desk -- with Linux on
it -- to accomplish testing before I take something to the big iron. It
This is something I suspect you will be able to do. The CX1 may support
Linux (and it wouldn't surprise me if it had that as a
I almost hate to throw this one out there, but does anyone remember the
SGI deskside series? Challenge, Origin, Onyx
These were fairly popular there in the mid to late 90's. We had one at
GFDL up until at least a year ago.
[I want to score one for my house to play with]
On Wed, 2008-09-
On 9/16/08 11:49 PM, "Tim Cutts" <[EMAIL PROTECTED]> wrote:
On 16 Sep 2008, at 11:07 pm, Lux, James P wrote:
> There is a huge psychological advantage to having the computer
> physically under your management and control. You don't have folks
> trying to "optimize the use of a valuable inst
Gus Correa wrote:
Hi Joe and fellow Beowulf fans
Joe Landman wrote:
Gus Correa wrote:
Otherwise, your "newbie scientist" can put his/her earbuds and pump
up the volume on his Ipod,
while he/she navigates through the Vista colorful 3D menus.
Owie I can just imagine the folks squawkin
http://www.theregister.co.uk/2008/09/16/cray_baby_super/
Cray, Intel, and Microsoft birth baby supercomputer
Gigaflops for mom and pop shops
By Timothy Prickett Morgan • Get more from this author
Posted in Servers, 16th September 2008 18:25 GMT
Supercomputer maker Cray today announced a new d
68 matches
Mail list logo
