First Skylake CPUs hit the streets

Message boards : Number crunching : First Skylake CPUs hit the streets

To post messages, you must log in.

1 · 2 · 3 · 4 · Next

AuthorMessage
Profile Timo
Avatar

Send message
Joined: 9 Jan 12
Posts: 185
Credit: 45,644,940
RAC: 1
Message 78543 - Posted: 6 Aug 2015, 16:50:17 UTC

Just noticed that finally some Skylake CPUs are available http://www.ncix.com/article/intel_athexa.htm

Wondering if anyone has any numbers about Rosetta performance - I'm specifically interested to see how performance per watt might improve. Hoping this new architecture + 14nm process node will mean I can stuff more CPUs into my crunching farm without exceeding the maximum noise and heat levels that my wife will put up with :P
ID: 78543 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile dcdc

Send message
Joined: 3 Nov 05
Posts: 1829
Credit: 118,306,720
RAC: 26,947
Message 78544 - Posted: 6 Aug 2015, 17:03:45 UTC - in response to Message 78543.  

Just noticed that finally some Skylake CPUs are available http://www.ncix.com/article/intel_athexa.htm

Wondering if anyone has any numbers about Rosetta performance - I'm specifically interested to see how performance per watt might improve. Hoping this new architecture + 14nm process node will mean I can stuff more CPUs into my crunching farm without exceeding the maximum noise and heat levels that my wife will put up with :P


The reviews I've seen have said it's another iterative update - nothing ground-breaking, but consistent improvements at around 5-6% over Haswell and slightly lower power consumption too (in part due to DDR4). They might overclock a lot better than Haswell/Ivy Bridge did though.

I think the previous gen Broadwell chips with Iris Pro graphics are interesting - I'd like to see how they do on Rosetta because of the EDRAM L4 cache.

Also, the Haswell generation (22nm) i7-5820k is a comparative bargain now at £250 for 6 cores so I'd go for that if I were in the market at the moment.
ID: 78544 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
sgaboinc

Send message
Joined: 2 Apr 14
Posts: 282
Credit: 208,966
RAC: 0
Message 78546 - Posted: 6 Aug 2015, 17:44:46 UTC
Last modified: 6 Aug 2015, 17:46:58 UTC

apparently the big improvements seemed to be in the on chip graphics

http://www.tomshardware.com/reviews/skylake-intel-core-i7-6700k-core-i5-6600k,4252-10.html

however gpu based computation i.e. opencl didn't seem to have made too much a difference

http://techreport.com/review/28751/intel-core-i7-6700k-skylake-processor-reviewed/11

the core cpu computations performance seemed more or less comparable to the haswells

it would appear that the skylakes would probably perform similar to haswells (e.g.i7 4790k) running rosetta, possibly marginal improvements
ID: 78546 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Dr. Merkwürdigliebe
Avatar

Send message
Joined: 5 Dec 10
Posts: 81
Credit: 2,657,273
RAC: 0
Message 78547 - Posted: 6 Aug 2015, 18:16:52 UTC

Unless the developers provide new binaries that actually utilize some newer instruction sets, this is pretty much irrelevant for crunching.

Maybe if you overclock the 6700k, you'll see some speedup but it's all due to the higher frequency and energy usage.

Where are the SSE3 binaries? Can't be that hard?! I'd choose any minor speedup over nothing.

It's sort of useless to rely only on higher frequencies...
ID: 78547 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Timo
Avatar

Send message
Joined: 9 Jan 12
Posts: 185
Credit: 45,644,940
RAC: 1
Message 78549 - Posted: 6 Aug 2015, 21:02:36 UTC

.. still, everything I'm running currently is 22nm, this shrink to 14nm must bring some power efficiency improvements (again, the whole noise limit thing means this could be a huge difference for me in growing my crunching farm without the wife complaining about fan noise, etc. Not to mention savings on the power bill.)

Hoping someone takes the leap and can post some Points Per Day estimates and maybe if possible some sort of Power Consumption vs. Points type metric (I can dream).
ID: 78549 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile dcdc

Send message
Joined: 3 Nov 05
Posts: 1829
Credit: 118,306,720
RAC: 26,947
Message 78550 - Posted: 6 Aug 2015, 21:27:30 UTC - in response to Message 78549.  
Last modified: 6 Aug 2015, 21:28:44 UTC

.. still, everything I'm running currently is 22nm, this shrink to 14nm must bring some power efficiency improvements (again, the whole noise limit thing means this could be a huge difference for me in growing my crunching farm without the wife complaining about fan noise, etc. Not to mention savings on the power bill.)

Hoping someone takes the leap and can post some Points Per Day estimates and maybe if possible some sort of Power Consumption vs. Points type metric (I can dream).


If I get my grubby hands on one I will, but it's not looking likely in the short term!

How about a big water cooling loop for your existing rig? There are power savings at 14nm but there's more electrical leakage with the smaller processes and the temps tend to be higher because everything is denser which increases resistance so it's not a huge power saving.

I'd expect you'd save more by getting the temps of your 22nm stuff down as low as possible.

As the Dr says, a release with SSE3 or 4.1 might make a big difference to throughput - not heard anything on the ralph forum for a while so it might be next semester before there's any news on that.
ID: 78550 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Mark

Send message
Joined: 10 Nov 13
Posts: 40
Credit: 397,847
RAC: 0
Message 78557 - Posted: 7 Aug 2015, 11:03:20 UTC - in response to Message 78544.  

Also, the Haswell generation (22nm) i7-5820k is a comparative bargain now at £250 for 6 cores so I'd go for that if I were in the market at the moment.


Really? I'd be interested at that price, where did you see it?
ID: 78557 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile dcdc

Send message
Joined: 3 Nov 05
Posts: 1829
Credit: 118,306,720
RAC: 26,947
Message 78559 - Posted: 7 Aug 2015, 12:42:40 UTC - in response to Message 78557.  

Also, the Haswell generation (22nm) i7-5820k is a comparative bargain now at £250 for 6 cores so I'd go for that if I were in the market at the moment.


Really? I'd be interested at that price, where did you see it?

Newegg, but having looked further, it doesn't include VAT :(
http://www.newegg.com/global/uk/Product/Product.aspx?Item=N82E16819117402

Still, at £300 I'd go for it over the alternatives at the moment:
https://uk.pcpartpicker.com/part/intel-cpu-bx80648i75820k
http://www.aria.co.uk/Products/Components/Processors/Intel+CPUs/Core+i7+-+Socket+2011-v3+X99/Intel+i7-5820K+3.30GHz+%28Haswell-E%29+x6+Core+Processor+?productId=61708&source=pcpartpicker

ID: 78559 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile [VENETO] boboviz

Send message
Joined: 1 Dec 05
Posts: 1908
Credit: 8,808,846
RAC: 11,692
Message 78561 - Posted: 8 Aug 2015, 8:13:45 UTC - in response to Message 78547.  

Where are the SSE3 binaries? Can't be that hard?! I'd choose any minor speedup over nothing.


We have to wait September for restart the optimization, i think
In the other thread i suggest to contact another volunteer expert in boinc app development

ID: 78561 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Mark

Send message
Joined: 10 Nov 13
Posts: 40
Credit: 397,847
RAC: 0
Message 78565 - Posted: 8 Aug 2015, 21:24:10 UTC - in response to Message 78559.  
Last modified: 8 Aug 2015, 21:29:28 UTC

Also, the Haswell generation (22nm) i7-5820k is a comparative bargain now at £250 for 6 cores so I'd go for that if I were in the market at the moment.


Really? I'd be interested at that price, where did you see it?

Newegg, but having looked further, it doesn't include VAT :(
http://www.newegg.com/global/uk/Product/Product.aspx?Item=N82E16819117402

Still, at £300 I'd go for it over the alternatives at the moment:
https://uk.pcpartpicker.com/part/intel-cpu-bx80648i75820k
http://www.aria.co.uk/Products/Components/Processors/Intel+CPUs/Core+i7+-+Socket+2011-v3+X99/Intel+i7-5820K+3.30GHz+%28Haswell-E%29+x6+Core+Processor+?productId=61708&source=pcpartpicker


Hmmm best I could find was 270 at http://aqalabs.com/epages/950018197.sf/en_GB/?ObjectPath=/Shops/950018197/Products/2107 so was surprised to see your post. Hopefully the skylake introduction will drop the price. We'll see
ID: 78565 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
sgaboinc

Send message
Joined: 2 Apr 14
Posts: 282
Credit: 208,966
RAC: 0
Message 78808 - Posted: 17 Sep 2015, 16:56:27 UTC
Last modified: 17 Sep 2015, 17:15:25 UTC

is anyone here running rosetta@home on the latest skylake cpus this time round?

care to share the experience?

what are the benchmarking gflops seen with boinc? what kind of credits/points is scored for rosetta@home work units? (do provide more details like the cpu time those work units ran etc). other key parameters, e.g. i7 6700k / i5 6600k / O/S 32/64 bit / overclocked / cpu temps / heat sink (cpu cooler) used etc? :)
ID: 78808 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Timo
Avatar

Send message
Joined: 9 Jan 12
Posts: 185
Credit: 45,644,940
RAC: 1
Message 78984 - Posted: 25 Oct 2015, 17:23:39 UTC

As mentioned in a previous post, I am forced to stick with ultra-small-form-factor boxes (see this picture of my crunching farm) as to maintain approval of the wife who doesn't want my hobby taking up space or creating noise.

I'm super happy to see that there are now '~T' series skylake CPUs (thermally efficient ones that can run full tilt in these mini-ITX formfactors) starting to become available from Dell (I have my eye on the i7-6700T (SkyLake) OptiPlex 7040 Micro) and other OEMs. Once they come down a little bit in price I will add another box or two to my super dense crunching farm. (The two Micro form factor Lenovo boxes in my pic above I picked up for under $900 CDN, compared to the $1,600CDN price tag of these new boxes) XD
ID: 78984 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
l_mckeon

Send message
Joined: 5 Jun 07
Posts: 44
Credit: 180,717
RAC: 0
Message 78987 - Posted: 26 Oct 2015, 0:30:54 UTC

The i7-5820K lacks a GPU, so unless you're running headerless that's a small extra cost that you'll have to add. Also it has a TDP of 140W which might put some people off.
ID: 78987 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Timo
Avatar

Send message
Joined: 9 Jan 12
Posts: 185
Credit: 45,644,940
RAC: 1
Message 78988 - Posted: 26 Oct 2015, 6:28:22 UTC - in response to Message 78987.  

The i7-5820K lacks a GPU, so unless you're running headerless that's a small extra cost that you'll have to add. Also it has a TDP of 140W which might put some people off.

5000 series wouldn't be Skylake but rather Broadwell. So, thanks for the heads up about the lack of GPU support, but it's not related to this thread.
ID: 78988 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile dcdc

Send message
Joined: 3 Nov 05
Posts: 1829
Credit: 118,306,720
RAC: 26,947
Message 78989 - Posted: 26 Oct 2015, 9:59:06 UTC - in response to Message 78988.  

The i7-5820K lacks a GPU, so unless you're running headerless that's a small extra cost that you'll have to add. Also it has a TDP of 140W which might put some people off.

5000 series wouldn't be Skylake but rather Broadwell. So, thanks for the heads up about the lack of GPU support, but it's not related to this thread.

It's because I mentioned the 5820k as potentially a better-value option than the Skylake chips further down.

My guess is that the Skylake chips with eDRAM will be really good at Rosetta. Does anyone know how to get an idea of the likely speed-up available from eDRAM from the cache stats?
ID: 78989 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Jim1348

Send message
Joined: 19 Jan 06
Posts: 881
Credit: 52,257,545
RAC: 0
Message 78992 - Posted: 26 Oct 2015, 21:54:51 UTC - in response to Message 78989.  

The i7-5820K lacks a GPU, so unless you're running headerless that's a small extra cost that you'll have to add. Also it has a TDP of 140W which might put some people off.

5000 series wouldn't be Skylake but rather Broadwell. So, thanks for the heads up about the lack of GPU support, but it's not related to this thread.

It's because I mentioned the 5820k as potentially a better-value option than the Skylake chips further down.

My guess is that the Skylake chips with eDRAM will be really good at Rosetta. Does anyone know how to get an idea of the likely speed-up available from eDRAM from the cache stats?

I don't have a link at the moment, but the two reviews I saw showed little improvement of Skylake over Haswell, which was not that much of an improvement over Ivy Bridge.
ID: 78992 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Timo
Avatar

Send message
Joined: 9 Jan 12
Posts: 185
Credit: 45,644,940
RAC: 1
Message 78993 - Posted: 27 Oct 2015, 0:36:05 UTC - in response to Message 78992.  
Last modified: 27 Oct 2015, 0:36:25 UTC

The i7-5820K lacks a GPU, so unless you're running headerless that's a small extra cost that you'll have to add. Also it has a TDP of 140W which might put some people off.

5000 series wouldn't be Skylake but rather Broadwell. So, thanks for the heads up about the lack of GPU support, but it's not related to this thread.

It's because I mentioned the 5820k as potentially a better-value option than the Skylake chips further down.

My guess is that the Skylake chips with eDRAM will be really good at Rosetta. Does anyone know how to get an idea of the likely speed-up available from eDRAM from the cache stats?

I don't have a link at the moment, but the two reviews I saw showed little improvement of Skylake over Haswell, which was not that much of an improvement over Ivy Bridge.


More than brute performance improvements I'm chiefly interested in power efficiency improvements at load, ie. "Performance-per-Watt". At first glance, it looks like the newer SkyLake models of the T series are able to achieve 8 threads X 2.8GHz clock speeds in the same 35Watt envelope my 4785Ts are only able to push 2.2GHz (at the same wattage). This looks like some sizable efficiency improvements in Clock-rate-per-Watt alone, afforded I presume by the move to 14nm manufacturing process. This kind of improvement is paramount to how much I can contribute given limits on allowed noise/power consumption as per wife. XD
ID: 78993 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Profile Chilean
Avatar

Send message
Joined: 16 Oct 05
Posts: 711
Credit: 26,694,507
RAC: 0
Message 78994 - Posted: 27 Oct 2015, 2:48:40 UTC - in response to Message 78993.  

The i7-5820K lacks a GPU, so unless you're running headerless that's a small extra cost that you'll have to add. Also it has a TDP of 140W which might put some people off.

5000 series wouldn't be Skylake but rather Broadwell. So, thanks for the heads up about the lack of GPU support, but it's not related to this thread.

It's because I mentioned the 5820k as potentially a better-value option than the Skylake chips further down.

My guess is that the Skylake chips with eDRAM will be really good at Rosetta. Does anyone know how to get an idea of the likely speed-up available from eDRAM from the cache stats?

I don't have a link at the moment, but the two reviews I saw showed little improvement of Skylake over Haswell, which was not that much of an improvement over Ivy Bridge.


More than brute performance improvements I'm chiefly interested in power efficiency improvements at load, ie. "Performance-per-Watt". At first glance, it looks like the newer SkyLake models of the T series are able to achieve 8 threads X 2.8GHz clock speeds in the same 35Watt envelope my 4785Ts are only able to push 2.2GHz (at the same wattage). This looks like some sizable efficiency improvements in Clock-rate-per-Watt alone, afforded I presume by the move to 14nm manufacturing process. This kind of improvement is paramount to how much I can contribute given limits on allowed noise/power consumption as per wife. XD


You could heat your house with enough computing power. A bit of liquid cooling and creativity could go a long way!
ID: 78994 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Sid Celery

Send message
Joined: 11 Feb 08
Posts: 2021
Credit: 39,841,013
RAC: 23,327
Message 78995 - Posted: 27 Oct 2015, 3:05:32 UTC - in response to Message 78993.  

This kind of improvement is paramount to how much I can contribute given limits on allowed noise/power consumption as per wife. XD

I'm not in on this thread, but that deserves a lol on any platform :)
ID: 78995 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
Jim1348

Send message
Joined: 19 Jan 06
Posts: 881
Credit: 52,257,545
RAC: 0
Message 79000 - Posted: 28 Oct 2015, 15:08:28 UTC

Skylake is undoubtedly more efficient, but the lower temperatures on the CPU are due in part to taking the voltage regulator off-chip. That does not save power, only lowers the CPU temp.
ID: 79000 · Rating: 0 · rate: Rate + / Rate - Report as offensive    Reply Quote
1 · 2 · 3 · 4 · Next

Message boards : Number crunching : First Skylake CPUs hit the streets



©2024 University of Washington
https://www.bakerlab.org