Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Greg Lindahl
On Thu, Mar 15, 2007 at 02:14:06PM -0500, Peter St. John wrote: > I'd be optimistic for the process of translating F to C, followed by > compiling the C, to be as effecient as the process of compiling C into > assembler, followed by assmbling into executable. I'm not optimistic. The process destr

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Robert G. Brown
On Thu, 15 Mar 2007, Don R. Baker wrote: I apologize for flooding the list by a gross error must be noted: Part of Canada is SOUTH of Detroit. Mental dyslexia. That is what I actually meant to say. a) A trivial pursuit question; b) my wife is from detroit. Brain fart. rgb Thanks fo

[Beowulf] f2c

2007-03-15 Thread Jim Lux
At 11:38 AM 3/15/2007, Robert G. Brown wrote: On Thu, 15 Mar 2007, Leif Nixon wrote: "Peter St. John" <[EMAIL PROTECTED]> writes: I had thought that after some point (say, f77) the practical thing was to translate fortran to C and use the C compiler, just because compiler writers love C, adop

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Tony Travis
Robert G. Brown wrote: [...] Or be human-readable. f2c code was just about as evil as any zomby woof or eskimo boy could be. I used to try to use it to START porting fortran sources to C, but rapidly concluded that it was actually easier and saner to just rewrite the algorithms in native C by h

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Peter St. John
Oh yeah, automatic translation of FORTRAN to C is not human maintainable. When WorldCom did that (with consultants) I pointed out that the generated C was really FORTRAN and would be easier to maintain with FORTRAN programmers, for example: 550 WRITE(6, 555, X) 555 FORMAT(...) Became not_printf(f

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Robert G. Brown
On Thu, 15 Mar 2007, Leif Nixon wrote: "Peter St. John" <[EMAIL PROTECTED]> writes: I had thought that after some point (say, f77) the practical thing was to translate fortran to C and use the C compiler, just because compiler writers love C, adopted it hugely, and write great compilers. Appar

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Joe Landman
Robert G. Brown wrote: So what would be the appropriate forms for addressing a large group in CA? My knowledge of canadenglish is limited to experiences in the immediate Detroit area (due south of Canada, as it were) and the movie Strange Brew, eh, beauty? Due south? Detroit is one of the on

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Mark Hahn
So what would be the appropriate forms for addressing a large group in CA? My knowledge of canadenglish is limited to experiences in the immediate Detroit area (due south of Canada, as it were) and the movie Strange Brew, eh, beauty? "my dear and respected colleagues" would work ;) I could easi

Re: [Beowulf] What is a "proper" machine count for a cluster

2007-03-15 Thread Mark Hahn
Now comes the pitch. The "sweet spot" in cluster nodes at the moment seems to be a dual socket, dual core Opteron or Intel machine with 2 gigs of RAM per core, so each box is a 4-way SMP (I will be flayed alive by the list for such cavalier numbers). merely scourged ;) I agree with the confi

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Robert G. Brown
On Wed, 14 Mar 2007, Greg Lindahl wrote: On Wed, Mar 14, 2007 at 07:39:03PM -0400, Mark Hahn wrote: When curmudgeonly addressing everyone, you want the super-plural, "all y'all". I thought it was "all yunz" - curmudgeons don't alliterate ;) Robert is in the South, "all youse guys" is a Nor

Re: [Beowulf] What is a "proper" machine count for a cluster

2007-03-15 Thread Ashley Pittman
On Wed, 2007-03-14 at 11:16 -0700, Mathew Shember wrote: > I am just wondering what is a reasonable amount of computers to allocate > for playing around. For most things I find a four node/dual cpu system to be adequate, at least initially. Inter/inter node comms will naturally happen at differe

Re: [Beowulf] Is Beowulf a standard?

2007-03-15 Thread Douglas Eadline
Interesting question. The following is my opinion and may not be shared by everyone. I think the best working definition was given in the original book "How to Build a Beowulf" by Sterling, Becker et al: (brackets are my additions) ".. a collection of personal computers [or servers] interconnect

Re: [Beowulf] A start in Parallel Programming?

2007-03-15 Thread Leif Nixon
"Peter St. John" <[EMAIL PROTECTED]> writes: > I had thought that after some point (say, f77) the practical thing was to > translate fortran to C and use the C compiler, just because compiler writers > love C, adopted it hugely, and write great compilers. Apparently I was > mistaken. Compilers ar

Re: [Beowulf] What is a "proper" machine count for a cluster

2007-03-15 Thread Robert G. Brown
On Wed, 14 Mar 2007, Mathew Shember wrote: Hello all, A brand new noob entering this realm. I want to initiate a project involving a beowulf cluster. I have two engineers who are VERY interested. Anyway. I was wondering what would be a "decent" amount of equipment to start off and the

Re: [Beowulf] Is Beowulf a standard?

2007-03-15 Thread Robert G. Brown
On Tue, 13 Mar 2007, Alice Poma wrote: Hi there, As as a newbie I have a question, "Is Beowulf a clustering standard?" if yes "What makes Beowulf a standard" As I read about Beowulf, it appeared to me as a method for starting Linux clustering, but some people call it a standard, I couldn't under

Re: [Beowulf] What is a "proper" machine count for a cluster

2007-03-15 Thread John Hearns
Mathew Shember wrote: Hello all, I am just wondering what is a reasonable amount of computers to allocate for playing around. I was thinking 4 pentiums with dual gig processors. Ram would be a gig or more. Matthew, if I may put some words in your mouth what I THINK you are saying is tha