Really dinky or old cpu models driving "huge" gpus....

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Profile Tom M
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Message 2017545 - Posted: 2 Nov 2019, 11:36:14 UTC

Here is a thread to talk about your story.

I saw a Pentium 2 core apparently driving one or two gtx 1080Ti's as an example. The ones I am looking at are in the top 100 producers so they are getting VERY respectable levels of production.

So talk about what you did and why you chose to...

Tom
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Message 2017549 - Posted: 2 Nov 2019, 12:52:13 UTC

I think this computer fits that category.

A dual core pentium cpu driving 1080ti and a 970.

Its cpu starved and im doing alot of magic in cron to increase thread priority to setiathome executable.

If i would exchange that motherboard, cpu etc to a new one the RAC wouldnt increase that much after all.

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8676036

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Message 2017551 - Posted: 2 Nov 2019, 13:31:10 UTC

Not for SETI, but my Plex transcode server has a GTX 1660 attached to a Intel C2758 Atom processor lol. Only PCIe 2.0 8x though.

https://imgur.com/a/3cpk9AQ
Seti@Home classic workunits: 29,492 CPU time: 134,419 hours

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Message 2017657 - Posted: 3 Nov 2019, 3:00:55 UTC - in response to Message 2017551.  

Not for SETI, but my Plex transcode server has a GTX 1660 attached to a Intel C2758 Atom processor lol. Only PCIe 2.0 8x though.

https://imgur.com/a/3cpk9AQ


Once upon a time I think I tried to run an Atom-powered computer on Seti@home. It probably took a VERY long time to process a cpu task....

I wonder if I should amend the title to include "really old model cpus" like here: https://setiathome.berkeley.edu/show_host_detail.php?hostid=8611128 I know I appear to be picking on Viper but he is just a "target of opportunity". :)

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Message 2017658 - Posted: 3 Nov 2019, 3:03:13 UTC
Last modified: 3 Nov 2019, 3:16:09 UTC

I haven't owned one of these in "several" years: https://setiathome.berkeley.edu/show_host_detail.php?hostid=8785790

And here is another "elderly" cpu model: https://setiathome.berkeley.edu/show_host_detail.php?hostid=8785790

Wasn't this one of the top producers of its generation?
https://setiathome.berkeley.edu/show_host_detail.php?hostid=7284511

I skipped over several other Viper systems but he does seem to be specializing in driving pretty respectable sized gpus with tiny cpus.
I also skipped over Anonymous" who is doing similar things to Viper.

Here is another one: https://setiathome.berkeley.edu/show_host_detail.php?hostid=8738726

Tom
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Message 2017669 - Posted: 3 Nov 2019, 8:52:19 UTC - in response to Message 2017545.  

Here is a thread to talk about your story.

I saw a Pentium 2 core apparently driving one or two gtx 1080Ti's as an example. The ones I am looking at are in the top 100 producers so they are getting VERY respectable levels of production.

So talk about what you did and why you chose to...

Tom

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8729943 Is a Xeon E5450 (basically a 3ghz Core2Quad) w/ 4xGT980s. Currently pulling a pretty respectable 180k+ RAC doing GPU-only crunching, which puts it #37 in the top 100, two behind the Z600. Definitely no head-room to do CPU tasks, but with 1 core per GPU it seems to do OK. Doubt I'll tempt fate and try to add more GPUs with a switched riser. Thing is, that old Socket 775 mobo just kicks butt, and it seems to outperform the HP boxes when it comes to servicing the PCIE slots. It also seems to have faster memory access. I think it's just how Gigabyte built the i/o architecture. The PC itself was a freebie from a neighbor, so even with some better memory, a better CPU and cooler and a decent power supply I got into it for pretty cheap. Might add an SSD at some point, though I'm not sure how much speed that would add.

The HP Z600 https://setiathome.berkeley.edu/show_host_detail.php?hostid=8807028 has dual X5675s, and seems to be a bit faster than the Gigabyte. I just scored a 4-slot switched riser, so I'm running 1x980 internal and 6 GPUs external (3x980 and 3x750ti) external. Also seem to have the headroom to do all that and still crunch away on 9xCPU tasks while keeping the utilization reasonable. No clue what the RAC will end up at on that one, as I just added the riser, but it looks to be passing through 200k as I write. Will have to wait to tweak until it levels out a bit. Why, because dual CPU boxes are cool and I couldn't bear to have all those threads going to waste.
Besides, it's cool here now and I need the heat. I just rearranged the equipment layout to place it where all that nice heat rises up the basement stairs.) Or perhaps I'm just really, really bored right now ... I did spend the afternoon sorting nuts,. bolts and screws :)
Bottom line, I have no plans to add more boxes at this point, so it's a game of optimizing what I have to increase performance while maintaining or reducing power consumption. 2000 kwh / mo is a bit nuts ... 980s are power hogs, but they were cheap and I have them, so ...
Later, Jim ....
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Message 2017765 - Posted: 4 Nov 2019, 6:52:25 UTC - in response to Message 2017658.  


Here is another one: https://setiathome.berkeley.edu/show_host_detail.php?hostid=8738726

Tom


Thing about that machine is the G3258 is basically 1/2 of an i5-4xxx CPU. So while it's only got 2 cores, it's single thread performance is pretty good. Only problem is it's only got 2 threads. But if you only need to feed 2 GPUS, and flag away the CPU processing completely, it'a going to drive the GPU just as well as a multi-core multi-threading beast. Possibly better because the CPU wont be doing anything else, so it gets to make best use of it's cache and memory access, without having to fight with 10 other tasks that are running. Could swapping to an i7 could potentially drop the RAC?

Anyway, if you look at an older PC like that, and say "What's the best way to make this crunch?". Then throwing in a big PSU and a couple of decent GPUs is going to do a LOT more than upgrading the CPU.
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Message 2018782 - Posted: 13 Nov 2019, 11:38:33 UTC

Just found this new "dinky" cpu..... driving 4 gpus.... in the top 20....

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8707336

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Message 2018806 - Posted: 13 Nov 2019, 15:48:47 UTC - in response to Message 2018782.  

Just found this new "dinky" cpu..... driving 4 gpus.... in the top 20....

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8707336

Tom


maybe you posted the wrong link. a 7700k isnt that "dinky" and that system appears to be driving 7 GPUs, not 4.
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Message 2018818 - Posted: 13 Nov 2019, 17:13:16 UTC - in response to Message 2018806.  

Just found this new "dinky" cpu..... driving 4 gpus.... in the top 20....

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8707336

Tom


maybe you posted the wrong link. a 7700k isnt that "dinky" and that system appears to be driving 7 GPUs, not 4.


Odd. That url is displaying a
GenuineIntel
Intel(R) Pentium(R) Gold G5400 CPU @ 3.70GHz [Family 6 Model 158 Stepping 10]
(4 processors)	[4] NVIDIA GeForce GTX 1060 6GB (4095MB) driver: 440.26 OpenCL: 1.2


On the leaderboard page. But it is clearly linking to that 7700k in the subsidiary page....

Odd.
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Message 2018819 - Posted: 13 Nov 2019, 17:16:23 UTC - in response to Message 2018818.  
Last modified: 13 Nov 2019, 17:16:57 UTC

Just found this new "dinky" cpu..... driving 4 gpus.... in the top 20....

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8707336

Tom


maybe you posted the wrong link. a 7700k isnt that "dinky" and that system appears to be driving 7 GPUs, not 4.


Odd. That url is displaying a
GenuineIntel
Intel(R) Pentium(R) Gold G5400 CPU @ 3.70GHz [Family 6 Model 158 Stepping 10]
(4 processors)	[4] NVIDIA GeForce GTX 1060 6GB (4095MB) driver: 440.26 OpenCL: 1.2


On the leaderboard page. But it is clearly linking to that 7700k in the subsidiary page....

Odd.

Maybe you need to refresh your browser cache because here it said:

Tipo de CPU	GenuineIntel
Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz [Family 6 Model 158 Stepping 9]
Número de processadores	8
Coprocessadores	[7] NVIDIA GeForce GTX 1060 6GB (4095MB) driver: 440.26 OpenCL: 1.2 


Exactly as posted by Ian.
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Message 2018923 - Posted: 14 Nov 2019, 11:20:52 UTC

and the stderr.txt show 8 gpu ...

setiathome_CUDA: Found 8 CUDA device(s):
Device 1: GeForce GTX 1060 6GB, 6075 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 1, pciSlotID = 0
Device 2: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 2, pciSlotID = 0
Device 3: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 3, pciSlotID = 0
Device 4: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 4, pciSlotID = 0
Device 5: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 9, pciSlotID = 0
Device 6: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 10, pciSlotID = 0
Device 7: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 11, pciSlotID = 0
Device 8: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
computeCap 6.1, multiProcs 10
pciBusID = 12, pciSlotID = 0

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Message 2018928 - Posted: 14 Nov 2019, 12:41:15 UTC

Seems like he has one of that "complicated to keep working" hosts look what shows now and no WU in process.

<core_client_version>7.14.2</core_client_version>
<![CDATA[
<stderr_txt>
ome_CUDA: CUDA Device 7 specified, checking...
   Device cannot be used
  Cuda initialisation FAILED, Initiating Boinc temporary exit (180 secs)
setiathome_CUDA: Found 6 CUDA device(s):
  Device 1: GeForce GTX 1060 6GB, 6075 MiB, regsPerBlock 65536
     computeCap 6.1, multiProcs 10 
     pciBusID = 1, pciSlotID = 0
  Device 2: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
     computeCap 6.1, multiProcs 10 
     pciBusID = 2, pciSlotID = 0
  Device 3: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
     computeCap 6.1, multiProcs 10 
     pciBusID = 3, pciSlotID = 0
  Device 4: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
     computeCap 6.1, multiProcs 10 
     pciBusID = 4, pciSlotID = 0
  Device 5: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
     computeCap 6.1, multiProcs 10 
     pciBusID = 9, pciSlotID = 0
  Device 6: GeForce GTX 1060 6GB, 6078 MiB, regsPerBlock 65536
     computeCap 6.1, multiProcs 10 
     pciBusID = 12, pciSlotID = 0
In cudaAcc_initializeDevice(): Boinc passed DevPref 7
setiathome_CUDA: CUDA Device 7 specified, checking...
   Device cannot be used
  Cuda device initialisation retry 1 of 6, waiting 5 secs...
setiathome_CUDA: Found 6 CUDA device(s):


A bad connector riser cable? Who knows?
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Message 2018933 - Posted: 14 Nov 2019, 13:07:58 UTC - in response to Message 2018819.  
Last modified: 14 Nov 2019, 13:11:38 UTC

A page refresh didn't seem to clear it. But a browser cache clear helped the next day. I can "see clearly now...." (sung in an off tune voice).

Tom
ps. I was wondering around the WWW and found someone trying to sell an (old) Amd Ryzen 1700 for more than the price of a new 2700....
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Message 2018948 - Posted: 14 Nov 2019, 15:30:36 UTC

As ever one has to be very careful about prices on some websites. I recently upgraded one set of subs, many places were offering them at less than 1k each, but one load of cheeky wotzitz were asking over 3k each for exactly the same thing (used - and using shots from the manufacturer's website of the serial number plates to "show they were genuine").
The web is well named - there are lots of unscrupulous spiders out there to trap the unwary.
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Message boards : Number crunching : Really dinky or old cpu models driving "huge" gpus....


 
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