RE: [Beowulf] noobs: what comes next?

2009-06-23 Thread Hearns, John
> > I've sent this mail as a direct reply to Mr. John Hearns, so I'm > sending > it again to the list - my apologies to Mr. Hearns. Emmm... John please! > Hearns, John wrote: > > > > > > I would guess you are looking are looking at using OpenFOAM for the > CFD > > > solver? > > Of course, what

Re: [Beowulf] PGI_POST_COMPILE_OPTS

2009-06-23 Thread Brock Palen
Yeah you appear right, did some small tests, does not work on a normal machine, damn, just regular documentation (does it ever get read by grad students?). yeah looks like we dug up all the same stuff. Glad you enjoy the show! FYI, Jeff and I are skipping a show, I am out all this week i

Re: [Beowulf] PGI_POST_COMPILE_OPTS

2009-06-23 Thread Brock Palen
On Jun 22, 2009, at 8:23 PM, Alan Louis Scheinine wrote: On the Cray systems I have access to (Kraken) this variable is set to -tp barcelona-64 Which just tells the compiler which CPU to optimize for. I would like to use it on our system where we have a mix of AMD revisions, using PGI's unifi

[Beowulf] Parallel Programming Question

2009-06-23 Thread amjad ali
Hello all, In an mpi parallel code which of the following two is a better way: 1) Read the input data from input data files only by the master process and then broadcast it other processes. 2) All the processes read the input data directly from input data files (no need of broadcast fr

Re: [Beowulf] Possible to perform different jobs on different nodes?

2009-06-23 Thread Geoff Jacobs
Dr Cool Santa wrote: > Because of the software that I am using, I am forced to use MPICH1 > implementation. > And because the softeware is programmed in such a way, most of the time, > I don't need more than 3-5 nodes while I have 8. I just want to know > whether it is possible for it to use the fi

Re: [Beowulf] noobs: what comes next?

2009-06-23 Thread Geoff Jacobs
Tomislav Maric wrote: > Thank You for the detailed answer, it's really educational. I've been > reading Atom's description today on tom's hardware, and there it's also > described in the way You have described it. > > I was thinking about using RAID because I was worried about backup space > and s

Re: [Beowulf] PGI_POST_COMPILE_OPTS

2009-06-23 Thread Gus Correa
Hi Brock, Alan, list First off ... Brock: thanks for the RCE Podcast. It is great! For those who don't know it, and are interested in all aspects of HPC, here is the link: http://www.rce-cast.com/ Brock Palen wrote: > I noticed that the cray XT machines are setting an environment variable > 'P

Re: [Beowulf] noobs: what comes next?

2009-06-23 Thread Tomislav Maric
Thank You for the detailed answer, it's really educational. I've been reading Atom's description today on tom's hardware, and there it's also described in the way You have described it. I was thinking about using RAID because I was worried about backup space and speed for data transfer on the hard