Thinking about a CPU only cruncher

Anonymous

RE: RE: Is it also a

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Is it also a drone? :>)

lol, yes i admit it's over fanned - more a hair drier station. Despite my thinking of cpu only, it will probably end up home to the hd7990 and that needs four case fans to keep it just under control when running.

When I first saw this picture my initial gut feeling was that this rig does not look like a CPU only rig. Something else is driving the build. And now the possibility of an HD 7990. Hmm.

32 tasks is "most impressive". And the temps seem to be responding to the fans.

Trotador
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It looks great, that fan

It looks great, that fan configuration seems that could work very well, the fan in the back of the housing is exhausting or intaking air? and weren't you going quad-channel?

I've enabled CPU unit in my host with 2xe5-2690 and 32 GB in quad channel to compare crunching times. These ones boost to 3.3 GHz but let see how they behave. 29 WUs plus one GPUgrid WU and one free thread to let some more air to the GPU.

I've noted what you say of the ppa for the last Boinc relese for Linux, how is it? the last version en Berkeley is 7.4.22, is it not from Berkeley? thanks

AgentB
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RE: When I first saw this

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When I first saw this picture my initial gut feeling was that this rig does not look like a CPU only rig. Something else is driving the build. And now the possibility of an HD 7990. Hmm.


Yes robl, you're seeing the scope creep... but i did want to future proof a bit. The dual cpu board needs 24+8+8 power all 12V, all 20A and ASUS suggest mininum PSU is 500W. Not all PSUs have that extra 8.

i have already the hd7990 running on an i5-4690k and 2 gtx-460s on a first-gen i3, which will be retired soon. There's an Occulus Rift coming soon and that might trigger a need for a new GPU, and that will push the hd7990 - which needs ~430W - into this one. But it will stay this way for at least a month.

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32 tasks is "most impressive". And the temps seem to be responding to the fans.

Yes, i can't believe these processors are being sold at ~60USD each. If money was no object i think two e5-2695v2 would fit (list 2340USD each *cough*) would give you 48 tasks!

I'm not convinced 32 tasks (hyper-threading) is optimal, as Gamboleer mentioned there is some bottleneck, and i need to do a few more things (network shares, sensors etc), so i've dropped it back to 16 until a few tasks get validated, and i have some time to go through all the bios settings. Maybe a different task mix etc.

AgentB
AgentB
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RE: It looks great, that

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It looks great, that fan configuration seems that could work very well, the fan in the back of the housing is exhausting or intaking air?

Exhausting, the PSU is also exhausting!

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and weren't you going quad-channel?

I expect to get some more memory later if i see thats a problem, it's the surprisingly expensive part...

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I've enabled CPU unit in my host with 2xe5-2690 and 32 GB in quad channel to compare crunching times. These ones boost to 3.3 GHz but let see how they behave. 29 WUs plus one GPUgrid WU and one free thread to let some more air to the GPU.

ok be interesting to see the difference.

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I've noted what you say of the ppa for the last Boinc relese for Linux, how is it? the last version en Berkeley is 7.4.22, is it not from Berkeley? thanks

I assume you are referring to BOINC download page which has the recommendation

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If available, we recommend that you install a distribution-specific package instead.

In the case of ubuntu 14.04 you will get 7.2.42 but if you use Gianfranco's Locutusofborg ppa here it is a little closer to the leading edge for Ubuntu. Debian based BOINC is maintained here here hth

Trotador
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Thanks for the debian boinc

Thanks for the debian boinc page!. I like to install BOIC via the Berkeley installer method, I will investigate there.

Anonymous

RE: In the case of ubuntu

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In the case of ubuntu 14.04 you will get 7.2.42 but if you use Gianfranco's Locutusofborg ppa here it is a little closer to the leading edge for Ubuntu. Debian based BOINC is maintained here here hth

What is interesting is that the Ubuntu Mate that I am using on my Piz delivers Boinc 7.6.6 as part of their distro.

Aren't we close to Ubuntu's next long term release? Just found out that it will be released 4/21/16. Here is a write up about ubu16 LTS

AgentB
AgentB
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RE: What is interesting is

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What is interesting is that the Ubuntu Mate that I am using on my Piz delivers Boinc 7.6.6 as part of their distro.

Aren't we close to Ubuntu's next long term release? Just found out that it will be released 4/21/16. Here is a write up about ubu16 LTS

Ubuntu 14.04 LTS stopped getting boinc updates maybe a year ago as i recall.

There is a problem with 16.04 LTS and AMD crunching.

Why Radeon Users May Want to Avoid Ubuntu 16.04 LTS

Anonymous

RE: RE: What is

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Quote:

What is interesting is that the Ubuntu Mate that I am using on my Piz delivers Boinc 7.6.6 as part of their distro.

Aren't we close to Ubuntu's next long term release? Just found out that it will be released 4/21/16. Here is a write up about ubu16 LTS

Ubuntu 14.04 LTS stopped getting boinc updates maybe a year ago as i recall.

There is a problem with 16.04 LTS and AMD crunching.

Why Radeon Users May Want to Avoid Ubuntu 16.04 LTS

Yikes! Did not know this ... until now.

AgentB
AgentB
Joined: 17 Mar 12
Posts: 915
Credit: 513211304
RAC: 0

RE: RE: There is a

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There is a problem with 16.04 LTS and AMD crunching.

Why Radeon Users May Want to Avoid Ubuntu 16.04 LTS

Yikes! Did not know this ... until now.

We probably should start a new thread in the Problems forum to pre-empt the questions but there has been some success with the Open Source drivers, but things will be in a state of flux for a month or two.

See over at BOINC forum Why Doesn't and When Will BOINC Support GPUs Via Open-Source OpenCL Drivers?

edit: and some links off here

Ubuntu Is Deprecating fglrx (Catalyst) In 16.04 LTS

Anonymous

RE: RE: RE: There is a

Quote:
Quote:
Quote:

There is a problem with 16.04 LTS and AMD crunching.

Why Radeon Users May Want to Avoid Ubuntu 16.04 LTS

Yikes! Did not know this ... until now.

We probably should start a new thread in the Problems forum to pre-empt the questions but there has been some success with the Open Source drivers, but things will be in a state of flux for a month or two.

See over at BOINC forum Why Doesn't and When Will BOINC Support GPUs Via Open-Source OpenCL Drivers?

edit: and some links off here

Ubuntu Is Deprecating fglrx (Catalyst) In 16.04 LTS

Agree with moving this to "Problems". Did not mean to "bend" your thread. I am easily side tracked. :

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