Re: [Beowulf] about clusters in high schools

2006-01-26 Thread Brian D. Ropers-Huilman
-BEGIN PGP SIGNED MESSAGE- Hash: RIPEMD160 My first cut response, not the RGB 'bot response, which I'm sure will be full of excellent anecdotes, is: absolutely. My sources say -- pay attention to the upcoming State of the Union address. You'll hear a lot of talk about U.S. competitiveness

[Beowulf] about clusters in high schools

2006-01-26 Thread H.Vidal, Jr.
Howdy. My son attends a Science and Tech focused high school here in beautiful New Jersey. This is a pretty neat place for a high school, about 70% of the faculty has their PhD Kids take about 2-4 semesters of physics and chemistry, there are lots of computers, they teach Scheme as well as C++, J

[Beowulf] using two separate networks for different data streams

2006-01-26 Thread SIM DOG
G'day Ricardo Are you using MPI (1.2x)? If so, check out my Tips page: http://members.iinet.net.au/~steve_heaton/lss/login_fr.html Under Multiple NICs. In short you give each secondary interface its own hostname then modify the mpirun.args. Of course, your machines list also reflects this :)

Re: [Beowulf] using two separate networks for different data streams

2006-01-26 Thread John Hearns
On Thu, 2006-01-26 at 18:56 +, Ricardo Reis wrote: > Hi > > I've looked around, in the list and google and didn't find anything > elucidating enough on this so mabe someone could englight me or point me > where to look. > We ship quite a few clusters configured like this. One gigabit swit

Re: [Beowulf] using two separate networks for different data streams

2006-01-26 Thread Douglas Eadline
Obviously two network interfaces are needed per node for this to work. Most motherboards now come with two Ethernet interfaces so this has become a more standard way of doing things. The way it is done is as follows. You setup two networks. For example, your /etc/hosts file looks something like:

Re: [Beowulf] using two separate networks for different data streams

2006-01-26 Thread Kevin Ball
> > I've seen architectures with two network switchs, one is used for I/O > (writing, reading, so on) and another for message passing (MPI). how is > this achieved? I get the idea, from one place, where the applications > running must be aware of this but I was thinking that for this to work

Re: [Beowulf] using two separate networks for different data streams

2006-01-26 Thread ctierney
Quoting Ricardo Reis <[EMAIL PROTECTED]>: > > Hi > > I've looked around, in the list and google and didn't find anything > elucidating enough on this so mabe someone could englight me or point me > where to look. > > I've seen architectures with two network switchs, one is used for I/O >

[Beowulf] using two separate networks for different data streams

2006-01-26 Thread Ricardo Reis
Hi I've looked around, in the list and google and didn't find anything elucidating enough on this so mabe someone could englight me or point me where to look. I've seen architectures with two network switchs, one is used for I/O (writing, reading, so on) and another for message passing (M

Re: [Beowulf] Supermicro H8SSL-R10 versus H8SSL-i motherboards,, Broadcom SATA chips

2006-01-26 Thread Maurice Hilarius
Bruce Allen wrote: > On Wed, 11 Jan 2006, Maurice Hilarius wrote: > >>> http://www.supermicro.com/Aplus/motherboard/Opteron/HT1000/H8SSL-R10.cfm >>> >>> >>> Has anyone on the list seen or used a Supermicro H8SSL-R10 motherboard? > >> We too are waiting for SMicro to release the Serverworks boards w

Re: [Beowulf] Supermicro H8SSL-R10 versus H8SSL-i motherboards,, Broadcom SATA chips

2006-01-26 Thread Bruce Allen
On Thu, 26 Jan 2006, Mark Hahn wrote: (in the absence of windows, there's no reason to use builtin fraid over MD.) I'm not sure about this. I had the impression that the 'builtin fraid' on this system has Linux support from Broadcom, including both some OS drivers and user-side tools (CLI a