RX 480 running slow, why?

chester
chester
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Gary Roberts wrote: If you

Gary Roberts wrote:

If you look through the validated tasks for that linked host, the current ones are taking about 940s and a couple of days ago they were taking about 1360s - both for the 1.18 app version.  My calculations suggest that the slower time was for x3 and that more recently the host has been switched to x2.  This seems to accord with your single task time of 550s, dropping to 480s per task at x2 and 450-460s per task at x3.  My figures are just from eyeballing a page of validated results so are very approximate only.  However the trend seems quite believable.

I'm interested in RX 4xx performance as I'm considering that series for a future upgrade or two.  I've ordered a 460 to play with so I can get the driver sorted out for my preferred Linux distro.  If that all works out, I'll probably get a 470 and 480 as well so I can do detailed comparisons.  Quite a lot of fun (and distraction) playing with new kit :-).

 

Platform upgrade gave me <10% time reduction: https://einsteinathome.org/host/12479265 -> https://einsteinathome.org/host/12494837 so i'm considering GPU upgrade.

I'm running 3 tasks, R9 290, Linux taking the same times as your RX 480, but probably 50-100% more power draw. If anyone has enough experience with RX 470/480 to suggest:

  1. upgrade to 2x RX 470
  2. upgrade to 2x RX 480 (may be impossible, PSU is 550W Gold)
  3. keep going on Hawaii and wait for Vega which should replace top Polaris

3 is actually what i'm doing atm :)

Timo425
Timo425
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I know this thread is almost

I know this thread is almost a year old now, but I just want to say that this problem with rx 480 not being able to run more than 1 WU per gpu in Windows 10 still very much exists, actually my WUs stall completely when I try to set 2 WUs per GPU for hsgamma_FGRPB1G. I have the recent Windows 10 update + latest radeon drivers.

The moment I switch from 1 WU to 2 WUs per GPU, memory controller load drops to 0% in GPU-Z and the tasks stall completely.

Will try out Kubuntu soon..

mikey
mikey
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Timo425 wrote:I know this

Timo425 wrote:

I know this thread is almost a year old now, but I just want to say that this problem with rx 480 not being able to run more than 1 WU per gpu in Windows 10 still very much exists, actually my WUs stall completely when I try to set 2 WUs per GPU for hsgamma_FGRPB1G. I have the recent Windows 10 update + latest radeon drivers.

The moment I switch from 1 WU to 2 WUs per GPU, memory controller load drops to 0% in GPU-Z and the tasks stall completely.

Will try out Kubuntu soon..

I used to run my 480 here and MSIAfterburner said that one workunit filled the gpu to over 95% capacity, I have it in a Win10 machine with the latest non Beta drivers.

Anonymous

I just finished a built on a

I just finished a build on a new AMD Ryzen with an AMD RX480.  I installed the AMD GPUPro driver.  I am currently running 3 GPU jobs and 9 CPU jobs.  There were errors in the AMD websites install procedure.  You can see what I did here:  http://usefulramblings.org/?page_id=10506.  

Its not a complicated install and should take you about  10 minutes

 

Variable
Variable
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I have an RX 580 in one of my

I have an RX 580 in one of my Ryzen machines now running on Win10 with the most current Radeon driver and it seems to have the same issue with multiple work units. I tried running two at once and the run time drastically increased, appearing to just sit there mostly idle.  If I run a single task it's OK (times are roughly equivalent to the GTX 1070 I have in a different machine, varying anywhere from 650-800 sec per task).  The average load reported in HWinfo is usually ~70%. 

It would be nice to utilize the card more fully but I'm not sure how.  It's currently attached via a PCI-E riser in the Ryzen machine to a 1x slot.  I thought maybe that was bottlenecking it, so I took it out and ran the card in a full 16x slot, but the run times & load % didn't change.

mikey
mikey
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Variable wrote:I have an RX

Variable wrote:

I have an RX 580 in one of my Ryzen machines now running on Win10 with the most current Radeon driver and it seems to have the same issue with multiple work units. I tried running two at once and the run time drastically increased, appearing to just sit there mostly idle.  If I run a single task it's OK (times are roughly equivalent to the GTX 1070 I have in a different machine, varying anywhere from 650-800 sec per task).  The average load reported in HWinfo is usually ~70%. 

It would be nice to utilize the card more fully but I'm not sure how.  It's currently attached via a PCI-E riser in the Ryzen machine to a 1x slot.  I thought maybe that was bottlenecking it, so I took it out and ran the card in a full 16x slot, but the run times & load % didn't change.

Did you try giving it a full cpu core just for itself? Sometimes that helps and sometimes it doesn't.

Variable
Variable
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Yes, the RX 580 is using a

Yes, the RX 580 is using a full cpu thread.

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