Is there a role for a modest HPC cluster at the community college?
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I purchased a Cisco UCS C460 M2 (4 @ 10 core Xeons, 128 GB total RAM) for $115
in my local area. If I used ESXi (free license), I am limited to 8 vcpu per VM.
Could I make a virtual Beowulf cluster out of some of these VMs? I'm thinking
this way I can learn cluster admin without paying the powe
Engwall
> To: Mark Kosmowski , "beowulf@beowulf.org"
>
> Subject: Re: [Beowulf] First cluster in 20 years - questions about
> today
> Message-ID: <1aehm2g2apv52ollgrey2doa.1580775240...@email.android.com>
> Content-Type: text/plain; charset="
Core(TM)
> i7-4770 CPU @ 3.40GHz machine which also does calculations and post-
> processing. My bottle neck right now is the time I need to write up stuff,
> another reason why I am still using the old server. At least it is heating
> my
> dining room. :-)
>
> Let me know if you
>
> Message: 3
> Date: Sun, 02 Feb 2020 18:09:36 -0500
> From: Gerald Henriksen
> To: beowulf@beowulf.org
> Subject: Re: [Beowulf] First cluster in 20 years - questions about
> today
> Message-ID:
> Content-Type: text/plain; charset=us-ascii
>
> On Sat, 1 Feb 2020 22:21:09 -0500, you wrot
>
>
>
> Message: 2
> Date: Sun, 2 Feb 2020 21:08:30 +
> From: "Lux, Jim (US 337K)"
> To: "beowulf@beowulf.org"
> Subject: Re: [Beowulf] [EXTERNAL] Re: First cluster in 20 years -
> questions about today
> Message-ID: <1e8c57e0-6050-43de-b0a5-001f90ed3...@jpl.nasa.gov>
> Content-Type:
I've been out of computation for about 20 years since my master degree.
I'm getting into the game again as a private individual. When I was active
Opteron was just launched - I was an early adopter of amd64 because I
needed the RAM (maybe more accurately I needed to thoroughly thrash my swap
drive
As an industrial hygienist that used a personal Beowulf cluster
during graduate studies in chemistry, I found the recent discussion on
immersion cooling doubly interesting. Is an immersion coolant bath a
dip tank according to US OSHA regulations? The two potentially
relevant ways for such use to
For whatever it is worth, and getting further off-topic, my understanding
from being a volunteer firefighter is that the fog nozzle isn't designed to
protect whatever is being sprayed, but to protect the firefighters and
their equipment by preventing a solid stream of water (regular
nozzle) acting
Hope you have a good vacation!
1. Administrivia: List admin away for a week (Chris Samuel)
>
>
> --
>
> Message: 1
> Date: Sat, 09 Apr 2016 10:42:32 +1000
> From: Chris Samuel
> To: beowulf@beowulf.org
> Subject: [Beowulf] Ad
of
optimization for you as well as keep the cluster running smoothly.
I'm sure someone will chime in if I've misunderstood something.
Mark Kosmowski
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On Thu, Sep 18, 2008 at 4:44 PM, Lux, James P <[EMAIL PROTECTED]> wrote:
>
>> -Original Message-
>> From: [EMAIL PROTECTED]
>> [mailto:[EMAIL PROTECTED] On Behalf Of Mark Kosmowski
>> Sent: Thursday, September 18, 2008 12:19 PM
>> To: beowulf@beowulf.
d through.
Perhaps even two nodes in one of those small college student beer
cooler fridges - a 12 pack is roughly the size of a mini-tower...
Thanks,
Mark Kosmowski
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there be a terms of use agreement in place
stating that the purpose of the cluster is for the emergency events
and that non-emergency usage, while allowed to make the cluster create
more value for itself, are subject to preemption in emergency
situations? Maybe have some sort of policy in place to giv
>
> > Which driver is active? Which Infinipath software release
> > is installed? The tool "ipath_control -i" can show which...
>
> QLogic kernel.org driver
> 00: Version: Driver 2.0, InfiniPath_QLE7140, InfiniPath1 4.2, PCI 2, SW
> Compat 2
>
> I think this is a 2.1 distribution, whereas there
After a bit of struggling I found a post at the AMD Developer Forum
stating that gcc 4.3 and acml 4.1.0 are not compatible.
I've been reading a bunch of folks here using gcc 4.3 and just wanted
to make everyone aware, hopefully prevent some time lost to futility.
Have a great weekend!
Mark E. Ko
this? Which gcc is
> >> this, which glibc is this?
> >>
> > Sorry about that I might have been misleading, GCC is generally the one
> > most sensitive to glibc, not the other ones although the latest ICC
> > (10.1.x series) do claim compatibility with the GNU environment so it
> > might get a little more dependency there.
>
> We have installed the 10.1.015 on customer machines from Centos 5.2
> through SuSE 10.x through Ubuntu with nary a problem. Very different
> glibc's. No issues with code generation.
>
> Binary distributions aren't evil. They do work, quite well in most cases.
>
>
> >
> > Cheers!
> >
> > Eric
>
>
> --
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics LLC,
> email: [EMAIL PROTECTED]
> web : http://www.scalableinformatics.com
>http://jackrabbit.scalableinformatics.com
> phone: +1 734 786 8423
> fax : +1 866 888 3112
> cell : +1 734 612 4615
>
Mark Kosmowski
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>
> Message: 4
> Date: Sat, 2 Aug 2008 13:49:11 +0100 (WEST)
> From: Ricardo Reis <[EMAIL PROTECTED]>
> Subject: Re: [Beowulf] fftw2, mpi, from 32 bit to 64 and fortran
> To: beowulf@beowulf.org
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charset="iso-8859-15"
>
>
> Hi all
>
> A
fftw and mpi libraries? Are you
positive that you've changed from 32-bit to 64-bit all of the
libraries your code links to, even the ones not related to fftw or
mpi?
You imply that 64-bit serial with fftw works - are you able to get a
different code to run with 64-bit mpi?
Good luck,
Ma
etup the default boot to be Linux, then run a script* at Linux
boot to set the one-time next boot be to Windows. This way, everytime
Windows reboots Linux would start and every time Linux reboots Windows
would start.
* How to exactly implement such a script is beyond the scope of my
current expertise, though I am more confident that this is possible,
mayhaps even easily possible, than I am that quantum mechanics is a
valid descriptor of the natural world.
Having posted this I will be rather embarrassed if this is the thread
that began as the non-ECC memory periodic refresh thread and not the
Windows-by-day / Linux-by-night thread.
Mark Kosmowski
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> "David Mathog" <[EMAIL PROTECTED]> writes:
>> A vendor who shall remain nameless graced us with a hot swappable drive
>> caddy in which one of the three mounting screws used to fasten the drive
>> to the caddy had been treated with blue LocTite. This wasn't obvious
>> from external inspection, b
d when
something gets broken. In fact, I do so little programming that it
has been a year since I've compiled anything - running into some
issues with a bunch of upgrades - if by two weekends from now I don't
even have a serial CPMD 3.13.1 running I'm going to break down and
seek he
>>> Mark Kosmowski wrote:
>>>
>>> I have a small cluster too (ok, had, I'm condensing to one big RAM
>>> workstation at the moment). Mine was a 3 node dual Opteron setup.
>>>
>>> The first trick is to get each node to be able to ssh to
I have a small cluster too (ok, had, I'm condensing to one big RAM
workstation at the moment). Mine was a 3 node dual Opteron setup.
The first trick is to get each node to be able to ssh to every other
node without getting a password prompt. It doesn't matter for the
calculation whether this is
A couple weeks ago I complained about energy costs with respect to my
personal cluster used for graduate work. I received a great deal of
excellent advice as well as some offers of compute time when I'm ready
for production runs. Thank you everyone!
My solution so far has been to consolidate my
> Prentice Bisbal wrote:
> > Mark Kosmowski wrote:
> >
> >
> >> I think I have come to a compromise that can keep me in business.
> >> Until I have a better understanding of the software and am ready for
> >> production runs, I'll stick to a sm
On 7/2/08, Joe Landman <[EMAIL PROTECTED]> wrote:
> Hi Mark
>
> Mark Kosmowski wrote:
> > I'm in the US. I'm almost, but not quite ready for production runs -
> > still learning the software / computational theory. I'm the first
> > person in t
ormance you get
> in the host OS is similar than the one of the guest OS. There are a lot of
> problems related to jitter, from crazy clocks to delays, but if your
> application is not sensitive to that, then you are Ok.
> Maybe this is not a solution, but you can provide more informati
And I forgot to change the subject. Apologies.
On 7/1/08, Mark Kosmowski <[EMAIL PROTECTED]> wrote:
> At some point there a cost-benefit analysis needs to be performed. If
> my cluster at peak usage only uses 4 Gb RAM per CPU (I live in
> single-core land still and do not ye
At some point there a cost-benefit analysis needs to be performed. If
my cluster at peak usage only uses 4 Gb RAM per CPU (I live in
single-core land still and do not yet differentiate between CPU and
core) and my nodes all have 16 Gb per CPU then I am wasting RAM
resources and would be better off
What kind of security is recommended for the owner of a small personal
cluster? Where should the owner of a small, personal cluster go to
learn about security? Doing searches tends to give a few "head in the
sand" sites but predominantly seem to be oriented for the security
professional.
I maint
> Message: 5
> Date: Tue, 10 Jun 2008 00:58:12 -0400 (EDT)
> From: Mark Hahn <[EMAIL PROTECTED]>
> Subject: Re: [Beowulf] size of swap partition
> To: Gerry Creager <[EMAIL PROTECTED]>
> Cc: Mikhail Kuzminsky <[EMAIL PROTECTED]>, beowulf@beowulf.org
> Message-ID:
><[EMAIL PROTECTED]>
> Cont
> Message: 2
> Date: Fri, 04 Apr 2008 15:14:56 +0200
> From: Toon Moene <[EMAIL PROTECTED]>
> Subject: Re: [Beowulf] How Can Microsoft's HPC Server Succeed?
> To: Jon Forrest <[EMAIL PROTECTED]>
> Cc: Beowulf Mailing List
> Message-ID: <[EMAIL PROTECTED]>
> Content-Type: text/plain; charse
someone who has maintained a personal cluster for their graduate
research have any reasonable chance of landing some sort of admin
position? Given that state of the economy, I've been kind of hoping
that I could look into admin positions as a backup plan if a position
in my field is not rea
machines ran a 32-bit program and the
64-bit machines ran a 64-bit program then that cluster might be
considered heterogenous.
I hope this at least sparks an interesting conversation,
Mark Kosmowski
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slope of the hardware selection debate ;)
Slippery indeed. At this point, I think I may just install the RAM to
bring my current calculation out of swap and be done with the cluster
for now. Given that I think one of my nodes uses hypertransport for
all of cpu 1 memory access, would it hurt a
de is getting 4 @ 2 Gb
DIMMs, one of the HDAMA nodes is getting 8 @ 1 Gb (both instances
fully populating the available DIMM slots) and the last machine is
going to get 4 @ 1 Gb DIMMs for one cpu and 2 @ 2 Gb for the other.
It looks like I may want to upgrade my motherboard before exploring
NUMA / aff
Could someone please provide a website or two for NUMA information?
I'm about to upgrade the RAM of my cluster and might want to
experiment with using NUMA to try too eek out a little speed. I am
definitely more of a cluster end-user than a developer, so NUMA admin
/ usage sites would be preferred
ussions off to private email if that is more
appropriate than the list in general. After all, the world is replete with
examples of complete newbie's coming up with ideas to revolutionize the
fields to which they are new.
Mark Kosmowski
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Regarding this thread going off-topic - I was amused by RGB's static
anecdote during a rather busy day at work, so am thankful it was shared.
To add my own on-topic contribution, I do solid-state chemistry calculations
and ran into the 32-bit memory limitations of Linux early on. This led me
to a
Sangamesh:
I am by no means an expert with either clustering or CPMD, but am
learning both. I am using OpenMPI, not MPICH, but can relate some
things that I would look for.
1) First, have other CPMD parellel jobs worked correctly on the same
nodes with the same executable?
2) Does the cpmd exec
t as time consuming to just learn a flavor
of MPI as it would be to learn to use OSCAR (for example)? I will
primarily be using CPMD for my calculations, but may want to try out
abinit and DFT++.
Thanks,
Mark Kosmowski
Syracuse University
Syracuse, NY
US
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