Uhm... not exactly.

Power consumption is only part of it. ;-)
Power consumption by itself is not enough to establish probable cause.
If that were the case, there would be a lot of raids around the Xmas holidays ... ;-)

Now don't ask me how I know this.... ;-P

Having run a rack out of my second bedroom in an apartment for ~8-10 years, I can tell you that yes, its noisy, it does heat the place, and that thanks to Moore's law, I was able to consolidate everything to a single 2 CPU 8 core Xeon box 2+ years ago.

Personally, I'd suggest that if you do take the equipment, that you consider how you plan to dispose of the hardware.  You can't just chuck it in to the trash anymore. (If you still have a Best Buy near you, they do recycle...)  Also think about the power requirements. You need to make sure you have a couple of circuits, some power conditioners, battery backup... etc ...   I was only running 8 nodes.  So YMMV.
On Dec 21, 2012, at 1:37 PM, Lance Norskog <[EMAIL PROTECTED]> wrote:

> You will also be raided by the DEA- too much power for a residence.
>
> On 12/20/2012 07:56 AM, Ted Dunning wrote:
>>
>>
>>
>> On Thu, Dec 20, 2012 at 7:38 AM, Michael Segel <[EMAIL PROTECTED]> wrote:
>> While Ted ignores that the world is going to end before X-Mas, he does hit the crux of the matter head on.
>>
>> If you don't have a place to put it, the cost of setting it up would kill you, not to mention that you can get newer hardware which is better suited for less.
>>
>> Having said that... if you live in the frozen tundra like Montana, or some place like ... er Canada or Siberia... , it may make more sense to use it to heat your home with it.
>> Just think of the side benefits from all that potential additional compute power....  :-P
>>
>>
>> I can say from experience that the sound of a bunch of servers in a home setting is a novel one that is probably unlike anything you have known before.
>>
>> If you haven't experienced that, then taking on these servers could be classified as novelty seeking behavior.
>

You can let nature cool it. I have mine behind the garage http://sphotos-b.xx.fbcdn.net/hphotos-snc7/463386_10151293008003232_1882563907_o.jpg
________________________________
 From: Michael Segel <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Sent: Saturday, December 22, 2012 8:01 AM
Subject: Re: What should I do with a 48-node cluster
 

Uhm... not exactly. 

Power consumption is only part of it. ;-) 
Power consumption by itself is not enough to establish probable cause. 
If that were the case, there would be a lot of raids around the Xmas holidays ... ;-) 

Now don't ask me how I know this.... ;-P

Having run a rack out of my second bedroom in an apartment for ~8-10 years, I can tell you that yes, its noisy, it does heat the place, and that thanks to Moore's law, I was able to consolidate everything to a single 2 CPU 8 core Xeon box 2+ years ago. 

Personally, I'd suggest that if you do take the equipment, that you consider how you plan to dispose of the hardware.  You can't just chuck it in to the trash anymore. (If you still have a Best Buy near you, they do recycle...)  Also think about the power requirements. You need to make sure you have a couple of circuits, some power conditioners, battery backup... etc ...   I was only running 8 nodes.  So YMMV. 

On Dec 21, 2012, at 1:37 PM, Lance Norskog <[EMAIL PROTECTED]> wrote:

You will also be raided by the DEA- too much power for a residence.
>
>On 12/20/2012 07:56 AM, Ted Dunning wrote:
>
>
>>
>>
>>
>>
>>On Thu, Dec 20, 2012 at 7:38 AM, Michael Segel <[EMAIL PROTECTED]> wrote:
>>
>>While Ted ignores that the world is going to end before X-Mas, he does hit the crux of the matter head on. 
>>>
>>>
>>>If you don't have a place to put it, the cost of setting it up would kill you, not to mention that you can get newer hardware which is better suited for less. 
>>>
>>>
>>>Having said that... if you live in the frozen tundra like Montana, or some place like ... er Canada or Siberia... , it may make more sense to use it to heat your home with it. 
>>>Just think of the side benefits from all that potential additional compute power....  :-P
>>
>>
>>
>>
>>I can say from experience that the sound of a bunch of servers in a home setting is a novel one that is probably unlike anything you have known before.
>>
>>
>>If you haven't experienced that, then taking on these servers could be classified as novelty seeking behavior.
>

Jay,

my "nature" is Houston, TX, they will argue about who can "cool" whom :)

I am thinking of $500/month rack hosting.

Mark

On Sat, Dec 22, 2012 at 2:12 PM, Jay <[EMAIL PROTECTED]> wrote:

> You can let nature cool it. I have mine behind the garage
> http://sphotos-b.xx.fbcdn.net/hphotos-snc7/463386_10151293008003232_1882563907_o.jpg
>
>   ------------------------------
> *From:* Michael Segel <[EMAIL PROTECTED]>
> *To:* [EMAIL PROTECTED]
> *Sent:* Saturday, December 22, 2012 8:01 AM
>
> *Subject:* Re: What should I do with a 48-node cluster
>
> Uhm... not exactly.
>
> Power consumption is only part of it. ;-)
> Power consumption by itself is not enough to establish probable cause.
> If that were the case, there would be a lot of raids around the Xmas
> holidays ... ;-)
>
> Now don't ask me how I know this.... ;-P
>
> Having run a rack out of my second bedroom in an apartment for ~8-10
> years, I can tell you that yes, its noisy, it does heat the place, and that
> thanks to Moore's law, I was able to consolidate everything to a single 2
> CPU 8 core Xeon box 2+ years ago.
>
> Personally, I'd suggest that if you do take the equipment, that you
> consider how you plan to dispose of the hardware.  You can't just chuck it
> in to the trash anymore. (If you still have a Best Buy near you, they do
> recycle...)  Also think about the power requirements. You need to make sure
> you have a couple of circuits, some power conditioners, battery backup...
> etc ...   I was only running 8 nodes.  So YMMV.
>
>
> On Dec 21, 2012, at 1:37 PM, Lance Norskog <[EMAIL PROTECTED]> wrote:
>
>  You will also be raided by the DEA- too much power for a residence.
>
> On 12/20/2012 07:56 AM, Ted Dunning wrote:
>
>
>
>
> On Thu, Dec 20, 2012 at 7:38 AM, Michael Segel <[EMAIL PROTECTED]>wrote:
>
> While Ted ignores that the world is going to end before X-Mas, he does hit
> the crux of the matter head on.
>
>  If you don't have a place to put it, the cost of setting it up would
> kill you, not to mention that you can get newer hardware which is better
> suited for less.
>
>  Having said that... if you live in the frozen tundra like Montana, or
> some place like ... er Canada or Siberia... , it may make more sense to use
> it to heat your home with it.
> Just think of the side benefits from all that potential additional compute
> power....  :-P
>
>
>
>  I can say from experience that the sound of a bunch of servers in a home
> setting is a novel one that is probably unlike anything you have known
> before.
>
>  If you haven't experienced that, then taking on these servers could be
> classified as novelty seeking behavior.
>
>
>
>
>
>

The infiniband connection to the disk unit might help with the I/O issue.
 The memory is a bit tight, but should be possible to make it work.
On Sat, Dec 22, 2012 at 5:11 PM, Edward Capriolo <[EMAIL PROTECTED]>wrote:

> You do not absolutely need more ram.  You do not know your workload yet. A
> standard hadoop machine has 8 disks 16 GB RAM, 8 cores.
>
> In the old days, you would dedicate map slots and reduce slots map 3 map 1
> reduce in your case. Give each of them 256 RAM for child jvm ops. So you
> needed more ram in that case that you have 8 cores, but you do not.
>
> In the end blades are not the ideal hadoop machine because users usually
> want many disks for lots of IO, but it is ok for kicking around.
>
>
> On Sat, Dec 22, 2012 at 7:53 PM, Mark Kerzner <[EMAIL PROTECTED]>wrote:
>
>> Edward, thank you for the practical recommendations. I am going to visit
>> the cluster in its current home in a few days, and I will keep this in
>> mind. Meanwhile, my specs are below
>>
>> 48 HP 1U blades, each has two 2.44 GHz. Dual core AMD Opterons with Cisco
>> Infiniband NICs, 4GB RAM
>>
>> 1 HP cluster controller with SCSI controller
>>
>> 1 HP RSA20 storage array with approx 1Tb of storage
>>
>> Cisco Infiniband 20Gbit optical network router
>>
>> In Compaq racks with four 30 amp 220 volt circuits
>>
>> All wiring and cabling.
>>
>> I am worried about 4 GB RAM on data nodes not being enough. Upgrading the
>> master nodes is bearable, but any memory upgrade on the complete cluster
>> will sure cost, when multiplied by 50.
>>
>> Thank you. Sincerely,
>> Mark
>>
>> On Fri, Dec 21, 2012 at 5:50 PM, Edward Capriolo <[EMAIL PROTECTED]>wrote:
>>
>>> Three year old blade center is ok. A three year old blade is probably a
>>> 64 bit machine. 2 to 4 gb RAM 2 SCSI disks. Maybe two socket two core. Two
>>> blade centers is about 8u or a quarter cabinet and you can find a hosting
>>> provider in your price range.
>>>
>>> Especially if you can get the hardware at a low initial cost you crush
>>> the cloud providers. Buying your own gear takes about a year to recoup
>>> costs over amazons pay per use model.
>>>
>>> Blade centers are usually 20 to 30 amp fully loaded though so if your
>>> crushing word count at home your power bill is gonna get $.
>>>
>>>
>>>
>>> On Friday, December 21, 2012, Mark Kerzner <[EMAIL PROTECTED]>
>>> wrote:
>>> > True!
>>> >
>>> > I am thinking of either my (small) office, or actually hosting for
>>> under $500/month.
>>> >
>>> > On Fri, Dec 21, 2012 at 1:37 PM, Lance Norskog <[EMAIL PROTECTED]>
>>> wrote:
>>> >>
>>> >> You will also be raided by the DEA- too much power for a residence.
>>> >>
>>> >> On 12/20/2012 07:56 AM, Ted Dunning wrote:
>>> >>
>>> >>
>>> >>
>>> >> On Thu, Dec 20, 2012 at 7:38 AM, Michael Segel <
>>> [EMAIL PROTECTED]> wrote:
>>> >>>
>>> >>> While Ted ignores that the world is going to end before X-Mas, he
>>> does hit the crux of the matter head on.
>>> >>> If you don't have a place to put it, the cost of setting it up would
>>> kill you, not to mention that you can get newer hardware which is better
>>> suited for less.
>>> >>> Having said that... if you live in the frozen tundra like Montana,
>>> or some place like ... er Canada or Siberia... , it may make more sense to
>>> use it to heat your home with it.
>>> >>> Just think of the side benefits from all that potential additional
>>> compute power....  :-P
>>> >>
>>> >> I can say from experience that the sound of a bunch of servers in a
>>> home setting is a novel one that is probably unlike anything you have known
>>> before.
>>> >> If you haven't experienced that, then taking on these servers could
>>> be classified as novelty seeking behavior.
>>> >
>>> >
>>>
>>
>>
>