RE: [Beowulf] Infiniband modular switches

2008-07-10 Thread Gilad Shainer
Patrick Geoffray wrote: > > Not only that I was there, but also had conversations > afterwards. It > > is a really "fair" comparison when you have different injection > > rate/network capacity parameters. You can also take 10Mb > and inject it > > into 10Gb/s network to show the same, and yo

Re: [Beowulf] A press release

2008-07-10 Thread Robert G. Brown
As to clustering... Latency would be a "bit" of a problem. PDP-8s only support serial and synchronous "networks". 9600 baud won't quite make it as a high performance cluster infrastructure ;-) PDP-11s do have 10Base Ethernet. But running TCP/IP on a PDP-11 is incredibly slow (even if running BSD

Re: [Beowulf] An annoying MPI problem

2008-07-10 Thread Reuti
Hi, Am 10.07.2008 um 17:02 schrieb Joe Landman: Lombard, David N wrote: I'll try all the usual things (reduce the optimization level, etc). Sage words of advice (and clue sticks) welcome. Not trying to sound like an ad... The currently shipping Intel Trace Collector and Analyzer (7.1), inc

Re: [Beowulf] A press release

2008-07-10 Thread Lyle Bickley
On Thursday 10 July 2008, Lombard, David N wrote: > On Thu, Jul 10, 2008 at 10:50:03AM -0700, Jim Lux wrote: > > in classic /. form, should we not now interject: > > > > What about a beowulf cluster of PDP-8s (or -1s or IBM 1130s or...)? > > Hmmm, don't know about the PDPs, but there aren't a lot o

[Beowulf] CUDA stream on GTX 260/280?

2008-07-10 Thread Bill Broadley
Has anyone run the McCalpin's stream port to CUDA on the GTX 260/280? stream.cu is available here: http://forums.nvidia.com/index.php?showtopic=52686 I'm interested in the ATI equivalent as well, but I'm not sure there's a stream port. ___ Beow

Re: [Beowulf] A press release

2008-07-10 Thread Gerry Creager
Robert G. Brown wrote: On Thu, 10 Jul 2008, Lyle Bickley wrote: On Thursday 10 July 2008, Robert G. Brown wrote: --snip-- Aye, laddy, 'twas a PDP 1 with sense switches on the front that one did indeed toggle in the paper tape boot program (to get it to where it could read from other media), a

Re: [Beowulf] A press release

2008-07-10 Thread Lombard, David N
On Thu, Jul 10, 2008 at 10:50:03AM -0700, Jim Lux wrote: > in classic /. form, should we not now interject: > > What about a beowulf cluster of PDP-8s (or -1s or IBM 1130s or...)? Hmmm, don't know about the PDPs, but there aren't a lot of working 1130's about. ibm1130.org has one, along with car

Re: [Beowulf] A press release

2008-07-10 Thread Jim Lux
At 09:58 AM 7/10/2008, Robert G. Brown wrote: On Thu, 10 Jul 2008, Lyle Bickley wrote: On Thursday 10 July 2008, Robert G. Brown wrote: --snip-- Aye, laddy, 'twas a PDP 1 with sense switches on the front that one did indeed toggle in the paper tape boot program (to get it to where it could rea

Re: [Beowulf] A press release

2008-07-10 Thread Robert G. Brown
On Thu, 10 Jul 2008, Lyle Bickley wrote: On Thursday 10 July 2008, Robert G. Brown wrote: --snip-- Aye, laddy, 'twas a PDP 1 with sense switches on the front that one did indeed toggle in the paper tape boot program (to get it to where it could read from other media), a green oscilloscope-style

Re: [Beowulf] A press release

2008-07-10 Thread Tim Cutts
On 10 Jul 2008, at 2:02 pm, Robert G. Brown wrote: Next (if things go as they usually do) we all have to kid around about IBM 5100's and QIC (floppies are just plain too modern for me:-) but if I do that the Titorheads will attack and I'll have to once again unconvincingly deny that I am, in

Re: [Beowulf] A press release

2008-07-10 Thread Lyle Bickley
On Thursday 10 July 2008, Robert G. Brown wrote: --snip-- > Aye, laddy, 'twas a PDP 1 with sense switches on the front that one did > indeed toggle in the paper tape boot program (to get it to where it > could read from other media), a green oscilloscope-style CRT for a > monitor (complete with cro

Re: [Beowulf] An annoying MPI problem

2008-07-10 Thread Joe Landman
Lombard, David N wrote: I'll try all the usual things (reduce the optimization level, etc). Sage words of advice (and clue sticks) welcome. Not trying to sound like an ad... The currently shipping Intel Trace Collector and Analyzer (7.1), includes message correctness checking. An option is a

Re: [Beowulf] An annoying MPI problem

2008-07-10 Thread Lombard, David N
On Tue, Jul 08, 2008 at 07:01:48PM -0700, Joe Landman wrote: > Hi folks > >Dealing with an MPI problem that has me scratching my head. Quite > beowulfish, as thats where this code runs. > >Short version: The code starts and runs. Reads in its data. Starts > its iterations. And then s

Re: [Beowulf] Re: energy costs and poor grad students

2008-07-10 Thread Joe Landman
Mark Kosmowski wrote: I have also decided to upgrade my software to try an eek a little speed out of things. I've done a clean install of OpenSUSE 11.0 using KDE 3.5 (I need the GUI for the workstation) and will be installing the latest versions of OpenMPI, CPMD, compilers and math libraries.

Re: [Beowulf] A press release

2008-07-10 Thread Ellis Wilson
Gerry Creager wrote: > The kids (whose language experience > ranges from Java to PHP, with C# thrown in for good measure) looked at > me like I was reciting either fiction or lore. Hey! Lets remember not all of us (such as those of us who are turning 21 today) were around to help change out v

[Beowulf] Re: energy costs and poor grad students

2008-07-10 Thread Mark Kosmowski
A couple weeks ago I complained about energy costs with respect to my personal cluster used for graduate work. I received a great deal of excellent advice as well as some offers of compute time when I'm ready for production runs. Thank you everyone! My solution so far has been to consolidate my

Re: [Beowulf] A press release

2008-07-10 Thread Geoff Jacobs
Gerry Creager wrote: > Robert G. Brown wrote: >> On Thu, 10 Jul 2008, Tony Travis wrote: >> >>> Chris Samuel wrote: [...] http://en.wikipedia.org/wiki/Four_Yorkshiremen_sketch I remember when I could bring the complete kernel sources home on a single 3.5" floppy disk. Comp

Re: [Beowulf] A press release

2008-07-10 Thread Robert G. Brown
On Thu, 10 Jul 2008, Gerry Creager wrote: OK, in a minute you'll have me reminiscing about booting from paper tape and havin' to drill me own 'oles wit' me teeth... ;-) Glad you smiled with that. Seems I find myself teaching an OS class all of a sudden this summer. I recounted my experienc

Re: [Beowulf] A press release

2008-07-10 Thread Gerry Creager
Robert G. Brown wrote: On Thu, 10 Jul 2008, Tony Travis wrote: Chris Samuel wrote: [...] http://en.wikipedia.org/wiki/Four_Yorkshiremen_sketch I remember when I could bring the complete kernel sources home on a single 3.5" floppy disk. Compressed, mind you, not this new fangled gzip! Then c

Re: [Beowulf] A press release

2008-07-10 Thread Robert G. Brown
On Thu, 10 Jul 2008, Tony Travis wrote: Chris Samuel wrote: [...] http://en.wikipedia.org/wiki/Four_Yorkshiremen_sketch I remember when I could bring the complete kernel sources home on a single 3.5" floppy disk. Compressed, mind you, not this new fangled gzip! Then came 0.9.15, 1.8MB compre

Re: [Beowulf] Update on mpi problem

2008-07-10 Thread Ashley Pittman
On Wed, 2008-07-09 at 23:58 -0400, Joe Landman wrote: > Ok ... thought this would be interesting for some folks. As a reminder, > using Open-MPI 1.2.6 for a customer code, seeing different behavior than > in the past. Scratching my head over it (seemingly non-deterministic). > > I tried using

Re: [Beowulf] A press release

2008-07-10 Thread andrew holway
bloody woollybacks. Yer durnt nur nowt bout t' computers or beatin's ower there. mah dad used to etch the bits inter me skin with a bit 'o' ot' coal then beat me with 'is Commadore +4 Andrew Holway Yorkshireman On Thu, Jul 10, 2008 at 9:44 AM, Tony Travis <[EMAIL PROTECTED]> wrote: > Chris Samue

Re: [Beowulf] A press release

2008-07-10 Thread Tony Travis
Chris Samuel wrote: [...] http://en.wikipedia.org/wiki/Four_Yorkshiremen_sketch I remember when I could bring the complete kernel sources home on a single 3.5" floppy disk. Compressed, mind you, not this new fangled gzip! Then came 0.9.15, 1.8MB compressed.. Hello, Chris. 3.5" floppy - you