Re: [Beowulf] Consumer vs. Enterprise Hard Drives in Clusters

2009-01-23 Thread Nifty Tom Mitchell
On Fri, Jan 23, 2009 at 01:08:05PM -0800, Lux, James P wrote: > Subject: Re: [Beowulf] Consumer vs. Enterprise Hard Drives in Clusters > > * Dramatically better vibration resistance. > is > > Wouldn't the effect of vibrations from multiple drives depend > greatly on the mechanical properties of

Re: [Beowulf] Consumer vs. Enterprise Hard Drives in Clusters

2009-01-23 Thread Bill Broadley
Jon Forrest wrote: > Wouldn't the effect of vibrations from multiple drives depend > greatly on the mechanical properties of the bay enclosure and > the chassis itself? For example, I have a 16 bay enclosure that's > built like a tank (I know because I dropped it once). I would > think that the vib

RE: [Beowulf] Consumer vs. Enterprise Hard Drives in Clusters

2009-01-23 Thread Lux, James P
Subject: Re: [Beowulf] Consumer vs. Enterprise Hard Drives in Clusters > * Dramatically better vibration resistance. > is Wouldn't the effect of vibrations from multiple drives depend greatly on the mechanical properties of the bay enclosure and the chassis itself? Yes,but... For example, I

Re: [Beowulf] Consumer vs. Enterprise Hard Drives in Clusters

2009-01-23 Thread Jon Forrest
Bill Broadley wrote: The differences I've seen between "raid edition" drives and regular drives are: Thanks for the thoughtful comments. I don't claim to be an expert in any of this. I just hope I'm asking the right questions. * Dramatically better vibration resistance. If you are going to b

Re: [Beowulf] tcp error: Need ideas!

2009-01-23 Thread Guy Coates
Hi, We have also seen problems with the bnx2 drivers. I got a more recent set of bnx2 drivers from Broadcom: bnx2-1.8.2b (1Gig E cards) bnx2x-1.46.12 (10 Gig E cards) you can grab a copy from ftp://ftp.sanger.ac.uk/pub/gmpc/bnx2x_1.46.12.orig.tar.gz You should be able to build that drivers a

Re: [Beowulf] Consumer vs. Enterprise Hard Drives in Clusters

2009-01-23 Thread Patrick Geoffray
Bill Broadley wrote: The differences I've seen between "raid edition" drives and regular drives are: * Dramatically better vibration resistance. If you are going to bolt a drive Enough to make them shouting-proof ? :-) http://www.youtube.com/watch?v=tDacjrSCeq4 Patrick __

Re: [Beowulf] programming guidence request

2009-01-23 Thread Douglas Eadline
You may find these two articles by Jeff Squyres useful: MPI: Debugging in Parallel (in Parallel) http://www.clustermonkey.net//content/view/60/28/ MPI: Debugging -- Can You Hear Me Now? http://www.clustermonkey.net//content/view/59/28/ -- Doug > Hello All, > I am developing my paralle

Re: [Beowulf] tcp error: Need ideas!

2009-01-23 Thread Gerry Creager
First, thanks to all who've responded. I've been looking a bit thins morning and am trying to grok the results. Joe Landman wrote: Hi Gerry Gerry Creager wrote: History/background/description of the cluster * 126 node Dell 1950 cluster with dual-quad core Xeons * HP 5412zl switch for gigabit

Re: [Beowulf] programming guidence request

2009-01-23 Thread Ashley Pittman
On Fri, 2009-01-23 at 11:03 +0500, amjad ali wrote: > Hello All, > I am developing my parallel CFD code on a small cluster. My system has > openmpi installed based on gfortran compiler. Please guide me > follwing: > > (1) Which debugger would be easy and effective to use for above? What features

Re: [Beowulf] programming guidence request

2009-01-23 Thread Joe Landman
amjad ali wrote: Hello All, I am developing my parallel CFD code on a small cluster. My system has openmpi installed based on gfortran compiler. Please guide me follwing: (1) Which debugger would be easy and effective to use for above? Hi Amjad MPI generally makes debugging much harder. If