Re: [Beowulf] Parallel Programming Question

2009-06-24 Thread Gus Correa
Hi Amjad, list Mark Hahn said it all: 2 is possible, but only works efficiently under certain conditions. In my experience here, with ocean, atmosphere, and climate models, I've seen parallel programs with both styles of I/O (not only input!). Here is what I can tell about them. #1 is the tradi

Re: [Beowulf] Parallel Programming Question

2009-06-24 Thread Mark Hahn
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 from the mast

Re: [Beowulf] Erlang Usage

2009-06-24 Thread Marian Marinov
On Wednesday 24 June 2009 16:46:45 Douglas Eadline wrote: > I have played with Erlang quite a bit (not built any > real programs however) I like Erlang for several reasons > > - functional > - open and freely available > - production level implementation (Ericsson) > > You can write Erlang programs

Re: [Beowulf] Erlang Usage

2009-06-24 Thread Douglas Eadline
I have played with Erlang quite a bit (not built any real programs however) I like Erlang for several reasons - functional - open and freely available - production level implementation (Ericsson) You can write Erlang programs that run on one core, multiple cores, or multiple servers. Erlang is

Re: [Beowulf] noobs: what comes next?

2009-06-24 Thread Tomislav Maric
Jon Tegner wrote: > > using overlapping grids. Complete with gridgenerator and a bunch of > solvers. Excellent software! > > /jon > I'll certainly take a look at it, but from what I've read on the main page, it uses structured and curvilinear grids, while OF also supports polyhedral finite v

Re: [Beowulf] Erlang Usage

2009-06-24 Thread Tim Cutts
On 24 Jun 2009, at 8:22 am, Marian Marinov wrote: Hello, I'm currently learning Erlang and I'm curious have any of you guys have ever used Erlang on their clusters? Have anyone experimented in doing any academic work with it? Only indirectly - my only encounter with it is people using cou

Re: [Beowulf] noobs: what comes next?

2009-06-24 Thread Eugen Leitl
On Tue, Jun 23, 2009 at 06:24:33PM -0500, Geoff Jacobs wrote: > Transfer speed gets a speed bump with 10k Velociraptors, but it's not Velociraptors are mostly for high-IOPS applications, they're not that fast. http://www.storagereview.net/php/benchmark/suite_v4.php?typeID=10&testbedID=4&osID=6&r

Re: [Beowulf] noobs: what comes next?

2009-06-24 Thread Jon Tegner
Hearns, John wrote: I would guess you are looking are looking at using OpenFOAM for There is also overture https://computation.llnl.gov/casc/Overture/ using overlapping grids. Complete with gridgenerator and a bunch of solvers. Excellent software! /jon ___

[Beowulf] Erlang Usage

2009-06-24 Thread Marian Marinov
Hello, I'm currently learning Erlang and I'm curious have any of you guys have ever used Erlang on their clusters? Have anyone experimented in doing any academic work with it? -- Best regards, Marian Marinov ___ Beowulf mailing list, Beowulf@beowulf.o