On Tue, 10 Apr 2007, Mark Hahn wrote:
It was PVM that enabled true message passing parallel code to be written
that made a pile of machines (be they Alphas, simple PCs, Sun
I'm not disagreeing, but wonder why PVM is basically extinct now.
that is, why was MPI considered an improvement/replacem
On Tue, Apr 10, 2007 at 11:19:08PM -0400, Mark Hahn wrote:
> it is unfortunate that compiling with debugging will normally disable
> a good number of valuable optimizations.
Actually, it's pretty common that compiling with debugging won't
disable optimization, but whether or not you can symbolic
Does anyone have any advice? I am open to try out other things as well if
possible. I am just starting to learn debugger techniques for a parallel
program.
we bought Allinea DDT, which is pretty good. I think it's a good
illustration that the parallel part of debugging doesn't have to be
hard
Hi Stephen,
On Sunday 08 April 2007 08:36:27 pm [EMAIL PROTECTED] wrote:
> What should my arch be? Does that even matter?
That's just a mnemonic thing, so if you build several versions with
different MPI implementations, compilers or options, you can distinguish
them.
> I realize I have to
Thanks for the reply Joe
atop seems to be a really cool tool that would be very helpful once I
get a chance to patch the kernel on file servers (for process level disk
usage and ethernet usage information.). I am setting up a test cluster
to reproduce the problem. Would post updates as I f
At 03:52 PM 4/10/2007, Donald Becker wrote:
Survey on beowulf.org -- video iPod
For those who haven't checked out the beowulf.org web pages recently,
we've
put up a survey about HPC.
You can find the link on the home page of
http://beowulf.org
or go directly to the survey at
http://www.
Matt Funk wrote:
Does anyone have any advice? I am open to try out other things as well if
possible. I am just starting to learn debugger techniques for a parallel
program.
Core dumps are your friends (though most linux distros turn them off by
default now). That and compiling your code wit
Dear Beowulf,
And the amusing part of the article is the standard marketing path:
paraphrasing... "Windows CCE is pretty good now, but when Version 2.0
comes out, it will be really useful... "
And I can only wonder at the marketing being prepared for Version 3.0
which is when Microsoft histori
Joe Landman wrote:
No. The extra registers make compiler optimization work better (lower
register pressure). The flat memory model (doing away with segmented
registers) simplifies addressing, and reduces the work of the processor
for every physical address calculation (no more segment + offset
Jon Forrest wrote:
One thing I've noticed about 64-bit computing in general
is that it's being oversold. The **only** reason
for running in 64-bit mode is if you need the additional
address space.
I wouldn't be to sure of that. Recently I became interested in the
divisors of a given natural
Thanks a lot...We are going ahead with it..Wish me luck...Will probably use
debian...I dont wish to use a live cd thing..U dont learn anything that
way...Will use MPI,PVM,Openmosix and OSCAR
On 4/8/07, Sandip Dev <[EMAIL PROTECTED]> wrote:
We are planning to set up a linux cluster on trail b
Northern Telecom sold a multi-user XENIX system. It was 8086 based based
using Multibus. Circa 1984
Robin
> At 11:39 AM 4/9/2007, Peter St. John wrote:
>>Well, I could run unix with all 1536K, but not MS/PCDOS 3.2. So call
>>it a software issue of failing to work around the hardware issue.
>>Ob
Thanks a lot...We are going ahead with it..Wish me luck
On 4/8/07, Mark Hahn <[EMAIL PROTECTED]> wrote:
> We are planning to set up a linux cluster on trail basis in our
> college.Since its merely a trail,we have been alloted PIII PCs with 128
MB
> Ram and 40 GB HD on a 100 MBps LAN.All i want
Mark Hahn wrote:
add the additional difficulty of getting 64-bit drivers
for windows, at least. 64b-ness was never much of an issue for linux.
The title of the message I was responding to was
about Win64, but your point is valid. Switching
to 64-bits is much easier in the Linux world than
th
Hello all,
I am trying to configure HPL on a beowulf cluster that I have put together for
a senior project at Weber State University, and I am having a little bit of
trouble. First of all, about the cluster:
4-node diskless cluster
Fedora Core 6 - 64 bit version
Intel Pentium D dual core proce
Toon Moene wrote:
I wouldn't be to sure of that. Recently I became interested in the
divisors of a given natural number.
I suspect small programs can be written to show almost any
kind of interesting behavior.
[program snipped]
The execution time difference was about 2 orders of magnitude.
Joe Landman wrote:
[EMAIL PROTECTED]:~> cat hi.f90
program hi
print *,"hi"
end
[EMAIL PROTECTED]:~> pgf90 hi.f90
[EMAIL PROTECTED]:~> ./a.out
hi
[EMAIL PROTECTED]:~> ls -alF a.out
-rwxr-xr-x 1 landman users 2302794 Apr 8 21:38 a.out*
2.3 MB for hi.
Yeach. This is De
Hi,
i hope this is the right mailing list to post to...
Anyway, i was wondering if i could get some advice/direction on how to debug
my mpich program. I am running on a scyld configuration. What i am trying
right now is the following:
mpirun -dbg=gdb -nolocal -np 32 exec
which starts the debu
And after IBM built it they tried very hard to keep Compaq, et al out from
this Open Architecture.
> Miller Ross wrote:
>> <...>
>>
>> That said, we as an industry do owe Microsoft one significant debt.
>> The standardization of Microcomputer hardware.
> I am not so sure. Microsoft deals (at leas
Joe Landman wrote:
??? Flat memory is non-segmented by definition. Would you care to
point out the flat memory addressing mode on x86 which can access all
4GB ram? I am sure I missed it.
I'll be happy to withdraw this comment.
Ok, here is where I guess I don't understand your point in pos
Hi All,
I have a beowulf cluster build with PIV PCS. We are needing a space of storage
where put data related with a project of medical images. My question is about
which is the best way for to deploy a distributed storage .. I mean, I thought
to use distributed filesystems or perhaps an applicat
Robert G. Brown wrote:
I totally agree with Joe on this issue. The "ideal" computer would have
an infinite, flat address space, totally transparent to the user. Want
to address memory location FF 0A BB 79 C3 12 93 54 6A 19 1D DA? (or
simply have 2^90 \approx 10^27 data objects to manage)? The
On 8 Apr 2007, at 7:39 am, Sandip Dev wrote:
We are planning to set up a linux cluster on trail basis in our
college.Since its merely a trail,we have been alloted PIII PCs with
128 MB
Ram and 40 GB HD on a 100 MBps LAN.All i want to know is,will this
hardware
support a cluster?
Yes, al
Survey on beowulf.org -- video iPod
For those who haven't checked out the beowulf.org web pages recently,
we've
put up a survey about HPC.
You can find the link on the home page of
http://beowulf.org
or go directly to the survey at
http://www.beowulf.org/community/survey.php
As an incen
At 01:29 PM 4/10/2007, Mark Hahn wrote:
It was PVM that enabled true message passing parallel code to be written
that made a pile of machines (be they Alphas, simple PCs, Sun
I'm not disagreeing, but wonder why PVM is basically extinct now.
that is, why was MPI considered an improvement/replace
Mark Hahn wrote:
It was PVM that enabled true message passing parallel code to be written
that made a pile of machines (be they Alphas, simple PCs, Sun
I'm not disagreeing, but wonder why PVM is basically extinct now.
that is, why was MPI considered an improvement/replacement?
Marketing by th
On Tue, Apr 10, 2007 at 09:26:29PM +, Andrew M.A. Cater wrote:
> Sorry, we based our ideas on Greg Lindahl :)
I'm not the only one!
http://www.improbable.com/projects/hair/hair-club-top.html
rgb just needs a good wig.
-- greg
___
Beowulf mailin
On Tue, Apr 10, 2007 at 03:45:19PM -0400, Robert G. Brown wrote:
> I must say, though, that you have the wrong idea about scientists. My
> kids regularly make fun of my near-complete lack of hair, not it
> excessive length...;-)
>
> rgb
>
Sorry, we based our ideas on Greg Lindahl :)
Once a
As far as I remember PVM has some overhead to facilitate message passing
in a heterogenous environment
that MPI does not have.
I had a customers sample code that required some data to be moved from
the headnode to a compute node
and while on PVM they would get about 50MB/s MPI could transfer abo
It was PVM that enabled true message passing parallel code to be written
that made a pile of machines (be they Alphas, simple PCs, Sun
I'm not disagreeing, but wonder why PVM is basically extinct now.
that is, why was MPI considered an improvement/replacement?
MS knifed IBM over OS/2 (which wa
On Mon, 9 Apr 2007, John Hearns wrote:
I disagree, strangely enough.
Bob Brown has mentioned in this thread that the 'tipping point' for him came
with the PII or PIV when code ran faster than big RISC machines.
I'll throw into the mix that nearly all 'big science' applications at the
time r
You might want to start with one of the "liveCD" styles of distros...
I'm playing around with a liveCD cluster these days (BCCD to be
specific) along with VMWare. LiveCD clusters have auto discovery of
nodes and extremely compact and fast (since they run on memory) and can
set-up a cluster in
Also FWIW, We've limited our Studio 9,10,11 usage to Solaris thus far.
The performance under Solaris 10 on both sparc and x64 has thus far been
superior to Gnu. I haven't done a side by side of the same app with both
linux and Solaris.
Joe Landman wrote:
Geoff Jacobs wrote:
Joe Landman wro
Geoff Jacobs wrote:
Joe Landman wrote:
FWIW2: (and not a sun shill here) Studio 11 is *free*. Doesn't seem to
generate as good (e.g. fast) code for linux as its commercial
competitors under linux (nor for that matter is the code it generates
under Solaris as fast as the code other compilers ge
On Sun, 8 Apr 2007, Joe Landman wrote:
64-bit computing solves a real problem. For apps that
don't need the extra address space, the benefits of
the additional registers in x86-64 are nearly undone
by the need to move more bits around, so 32-bit
and 64-bit modes are pretty much a push. When you
Joe Landman wrote:
> FWIW2: (and not a sun shill here) Studio 11 is *free*. Doesn't seem to
> generate as good (e.g. fast) code for linux as its commercial
> competitors under linux (nor for that matter is the code it generates
> under Solaris as fast as the code other compilers generate under Li
On Sun, 8 Apr 2007, Sandip Dev wrote:
We are planning to set up a linux cluster on trail basis in our
college.Since its merely a trail,we have been alloted PIII PCs with 128 MB
Ram and 40 GB HD on a 100 MBps LAN.All i want to know is,will this hardware
support a cluster? Moreover which distro/s
On Mon, 2 Apr 2007, Ryan Waite wrote:
Yeah, that marketing slogan wasn't too great since it sounds like we're
solely taking HPC mainstream. Ouch. Of course, that isn't the case.
Where would people on this list place the credit for HPC going
mainstream? If I had to pick one source, which is unfa
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