[Beowulf] Update on mpi problem

2008-07-09 Thread Joe Landman
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 '--mca btl ^sm' (turn off shared memory usage) on the non-infi

Re: [Beowulf] An annoying MPI problem

2008-07-09 Thread Chris Samuel
- "Joe Landman" <[EMAIL PROTECTED]> wrote: > Chris Samuel wrote: > > > - "Bruno Coutinho" <[EMAIL PROTECTED]> wrote: > > > >> Try disabling shared memory only. > > > > Interesting - is it possible to disable that at runtime > > with one of its billions of configuration options ? > > -m

Re: [Beowulf] A press release

2008-07-09 Thread Chris Samuel
- "Joe Landman" <[EMAIL PROTECTED]> wrote: > Shades of the Monty Python skit with the people sitting around, > talking about what happened to them when they were young, and how > unappreciative the youth is today ... http://en.wikipedia.org/wiki/Four_Yorkshiremen_sketch I remember when I c

Re: [Beowulf] A press release

2008-07-09 Thread Chris Samuel
- "Robert G. Brown" <[EMAIL PROTECTED]> wrote: > I'm sorry, this information is reserved only to the elitonic > illuminachos of the seventh tier. I can see the Fnords! TINC. At this rate of nostalgia Kibo will turn up soon.. ObLinux: I can remember in 1993 approaching my then boss at the

Re: [Beowulf] An annoying MPI problem

2008-07-09 Thread Joe Landman
Chris Samuel wrote: - "Bruno Coutinho" <[EMAIL PROTECTED]> wrote: Try disabling shared memory only. Open MPI shared memory buffer is limited and it enters deadlock if you overflow it. As Open MPI uses busy wait, it appears as a livelock. Interesting - is it possible to disable that at run

Re: [Beowulf] An annoying MPI problem

2008-07-09 Thread Chris Samuel
- "Bruno Coutinho" <[EMAIL PROTECTED]> wrote: > Try disabling shared memory only. > Open MPI shared memory buffer is limited and it enters deadlock if > you overflow it. > As Open MPI uses busy wait, it appears as a livelock. Interesting - is it possible to disable that at runtime with one o

Re: [Beowulf] An annoying MPI problem

2008-07-09 Thread Bruno Coutinho
Try disabling shared memory only. Open MPI shared memory buffer is limited and it enters deadlock if you overflow it. As Open MPI uses busy wait, it appears as a livelock. 2008/7/9 Ashley Pittman <[EMAIL PROTECTED]>: > On Tue, 2008-07-08 at 22:01 -0400, Joe Landman wrote: > >Short version:

Re: [Beowulf] An annoying MPI problem

2008-07-09 Thread Ashley Pittman
On Tue, 2008-07-08 at 22:01 -0400, Joe Landman wrote: >Short version: The code starts and runs. Reads in its data. Starts > its iterations. And then somewhere after this, it hangs. But not > always at the same place. It doesn't write state data back out to the > disk, just logs. Rerun

Re: [Beowulf] A press release

2008-07-09 Thread Matt Lawrence
On Wed, 9 Jul 2008, Prentice Bisbal wrote: Douglas Eadline wrote: A blast from the past. I have a copy of the Yggdrasil "Linux Bible". A phone book of Linux How-To's and other docs from around 1995. Quite useful before Google became the help desk. -- Doug Translation: Doug is a pack rat.

Re: [Beowulf] A press release

2008-07-09 Thread Gerry Creager
Robert G. Brown wrote: On Wed, 9 Jul 2008, Peter St. John wrote: Re "Bob", I was guessing Dobbs, http://en.wikipedia.org/wiki/J._R._%22Bob%22_Dobbs, mentioned in that wiki article. Peter You can't just TELL people that. You don't want the subgenii showing up around your door -- those sons

Re: [Beowulf] A press release

2008-07-09 Thread Karen Shaeffer
On Wed, Jul 09, 2008 at 02:03:09PM -0400, Prentice Bisbal wrote: > Jim Lux wrote: > > At 09:04 AM 7/9/2008, Karen Shaeffer wrote: > >> On Wed, Jul 09, 2008 at 09:58:21AM -0400, Prentice Bisbal wrote: > >> > Karen Shaeffer wrote: > >> > > > >> > > Hi, > >> > > > >> > > OK, here is your linux history

Re: [Beowulf] A press release

2008-07-09 Thread Prentice Bisbal
Jim Lux wrote: > At 09:04 AM 7/9/2008, Karen Shaeffer wrote: >> On Wed, Jul 09, 2008 at 09:58:21AM -0400, Prentice Bisbal wrote: >> > Karen Shaeffer wrote: >> > > >> > > Hi, >> > > >> > > OK, here is your linux history buff quiz. We all know Patrick V. was >> > > the technical spirit of slackware.

Re: [Beowulf] A press release

2008-07-09 Thread Jim Lux
At 09:04 AM 7/9/2008, Karen Shaeffer wrote: On Wed, Jul 09, 2008 at 09:58:21AM -0400, Prentice Bisbal wrote: > Karen Shaeffer wrote: > > > > Hi, > > > > OK, here is your linux history buff quiz. We all know Patrick V. was > > the technical spirit of slackware. Who was the original sales and > > m

Re: [Beowulf] A press release

2008-07-09 Thread Karen Shaeffer
Hi Pete, Based on my discussions with Patrick, I don't believe this is correct. Hahaha, but it does deserve careful consideration. Karen On Wed, Jul 09, 2008 at 12:14:50PM -0400, Peter St. John wrote: > Re "Bob", I was guessing Dobbs, > http://en.wikipedia.org/wiki/J._R._%22Bob%22_Dobbs, mention

Re: [Beowulf] A press release

2008-07-09 Thread Karen Shaeffer
On Wed, Jul 09, 2008 at 12:59:36PM -0400, Robert G. Brown wrote: > On Wed, 9 Jul 2008, Karen Shaeffer wrote: > > >Now, if we just knew Bob's last name... > > I'm sorry, this information is reserved only to the elitonic illuminachos > of the seventh tier. However, for a small fee I can provide yo

Re: [Beowulf] A press release

2008-07-09 Thread Robert G. Brown
On Wed, 9 Jul 2008, Peter St. John wrote: Re "Bob", I was guessing Dobbs, http://en.wikipedia.org/wiki/J._R._%22Bob%22_Dobbs, mentioned in that wiki article. Peter You can't just TELL people that. You don't want the subgenii showing up around your door -- those sons of yetis can be downright

Re: [Beowulf] A press release

2008-07-09 Thread Robert G. Brown
On Wed, 9 Jul 2008, Karen Shaeffer wrote: Now, if we just knew Bob's last name... I'm sorry, this information is reserved only to the elitonic illuminachos of the seventh tier. However, for a small fee I can provide you with the secret instructions required to commune with YHWH-1 and be enlig

Re: [Beowulf] A press release

2008-07-09 Thread Peter St. John
Re "Bob", I was guessing Dobbs, http://en.wikipedia.org/wiki/J._R._%22Bob%22_Dobbs, mentioned in that wiki article. Peter On 7/9/08, Karen Shaeffer <[EMAIL PROTECTED]> wrote: > > On Wed, Jul 09, 2008 at 09:58:21AM -0400, Prentice Bisbal wrote: > > Karen Shaeffer wrote: > > > > > > Hi, > > > > > >

Re: [Beowulf] A press release

2008-07-09 Thread Karen Shaeffer
On Wed, Jul 09, 2008 at 09:58:21AM -0400, Prentice Bisbal wrote: > Karen Shaeffer wrote: > > > > Hi, > > > > OK, here is your linux history buff quiz. We all know Patrick V. was > > the technical spirit of slackware. Who was the original sales and > > marketing wizard for slackware? (smiles ;) >

Re: [Beowulf] A press release

2008-07-09 Thread Prentice Bisbal
Karen Shaeffer wrote: > > Hi, > > OK, here is your linux history buff quiz. We all know Patrick V. was > the technical spirit of slackware. Who was the original sales and > marketing wizard for slackware? (smiles ;) > > Thanks, > Karen Quiz #2: Spell Patrick V.'s last name for Karen. -- Prenti

Re: [Beowulf] A press release

2008-07-09 Thread Prentice Bisbal
Douglas Eadline wrote: > A blast from the past. I have a copy of the Yggdrasil "Linux Bible". > A phone book of Linux How-To's and other docs from around 1995. > Quite useful before Google became the help desk. > > -- > Doug > Translation: Doug is a pack rat. -- Prentice