All things RX 500 series (460/560/570/580)

mikey
mikey
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Tom M wrote: I was dead flat

Tom M wrote:

I was dead flat on RAC at just under 1,000,000 on a pair of Rx 580's under Linux (8 GB)

The 2 Rx 580's under Linux on the top 50 list are doing 1,100,000 or so.

I looked at his tasks.  He was/is consistently getting lower CPU times than I am.  (Intel cpu vs. Amd cpu).

So I am now set at 1 cpu / gpu task.  2 GPU tasks per card.

I am now using some AMD GPU tools that another Boinc person created to toggle the gpus to "Compute" from "3d screen" the apparent default.

Is there anything else I can do to make it up to the magic 1,100,000 plateau? (Besides adding another card).

Tom M 

Have you tried 3 tasks per card yet or is it maxed out at 2 tasks? It's hard to know exactly what the top person is doing without talking to them but they could also be overclocking the cards to do it, something I would not recommend if you intend keeping them around for the long term.

Tom M
Tom M
Joined: 2 Feb 06
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mikey wrote: Tom M wrote: I

mikey wrote:

Tom M wrote:

I was dead flat on RAC at just under 1,000,000 on a pair of Rx 580's under Linux (8 GB)

The 2 Rx 580's under Linux on the top 50 list are doing 1,100,000 or so.

I looked at his tasks.  He was/is consistently getting lower CPU times than I am.  (Intel cpu vs. Amd cpu).

So I am now set at 1 cpu / gpu task.  2 GPU tasks per card.

I am now using some AMD GPU tools that another Boinc person created to toggle the gpus to "Compute" from "3d screen" the apparent default.

Is there anything else I can do to make it up to the magic 1,100,000 plateau? (Besides adding another card).

Tom M 

Have you tried 3 tasks per card yet or is it maxed out at 2 tasks? It's hard to know exactly what the top person is doing without talking to them but they could also be overclocking the cards to do it, something I would not recommend if you intend keeping them around for the long term.

I think I will run the current "maximum" setup for several more days up to next Saturday.  If the RAC doesn't show a significant difference I think 3 threads will be the next week long test.

I have had limited success in using overclocking utility's.  I am running under Linux which also means I can't use the standard Windows Radeon tools to try out various overclocking/undervolting etc experiments.

Tom M

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)

mikey
mikey
Joined: 22 Jan 05
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Tom M wrote:mikey

Tom M wrote:

mikey wrote:

Tom M wrote:

I was dead flat on RAC at just under 1,000,000 on a pair of Rx 580's under Linux (8 GB)

The 2 Rx 580's under Linux on the top 50 list are doing 1,100,000 or so.

I looked at his tasks.  He was/is consistently getting lower CPU times than I am.  (Intel cpu vs. Amd cpu).

So I am now set at 1 cpu / gpu task.  2 GPU tasks per card.

I am now using some AMD GPU tools that another Boinc person created to toggle the gpus to "Compute" from "3d screen" the apparent default.

Is there anything else I can do to make it up to the magic 1,100,000 plateau? (Besides adding another card).

Tom M 

Have you tried 3 tasks per card yet or is it maxed out at 2 tasks? It's hard to know exactly what the top person is doing without talking to them but they could also be overclocking the cards to do it, something I would not recommend if you intend keeping them around for the long term.

I think I will run the current "maximum" setup for several more days up to next Saturday.  If the RAC doesn't show a significant difference I think 3 threads will be the next week long test.

I have had limited success in using overclocking utility's.  I am running under Linux which also means I can't use the standard Windows Radeon tools to try out various overclocking/undervolting etc experiments.

Tom M

The key to trying 3 at a time is all about the time it takes to finish them so write down the times you are doing now with the card doing 2 tasks at the same time so you can easily compare when you try doing 3 at a time. The key is they will take longer but how much longer does it take?

I know there are Linux utilities too but I also have no clue what they are.

cecht
cecht
Joined: 7 Mar 18
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Tom M wrote:I have had

Tom M wrote:
I have had limited success in using overclocking utility's.  I am running under Linux which also means I can't use the standard Windows Radeon tools to try out various overclocking/undervolting etc experiments.

In addition to trying 3X suggested by Mikey, which should help, you can do under/over clocking on your Linux host with Ricks-Lab GPU Utilities

But before changing clock frequencies or voltages, I would suggest simply limiting the top shader clock speed by using a state mask. For Gamma-ray searches, I've found that lowering the top SCLK state of RX 570s from 7 to 6 actually improves performance. I'm pretty sure 580s would respond the same way. Using Ricks-Lab gpu-pac utility, enter 0,6 in the SCLK Set Mask field. I've tried overclocking these cards, but the gains are negligible. (Overclocking is worth a try, however, on RX 460s.). Also, I've had no luck changing memory clock masks or speeds. Best of luck hitting 1.1M!

Ideas are not fixed, nor should they be; we live in model-dependent reality.

Tom M
Tom M
Joined: 2 Feb 06
Posts: 5585
Credit: 7672636237
RAC: 1727435

OBTW,  apparently you can run

OBTW,  apparently you can run Rx 580's on the same system as Rx 5700's (Under Windows 10) just not Ubuntu drivers. Here (3 R5700s and 2 R580s)

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)

MontanaDoug
MontanaDoug
Joined: 16 Dec 20
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I have been following this

I have been following this thread (and a ton of others) since you're touching a number of my concerns and appear to have a very similar hardware setup.  I don't want to interrupt the author here so I'll open a new topic "System stability and efficiency".

Sorry for the "break-in".

Stay safe, Doug

Tom M
Tom M
Joined: 2 Feb 06
Posts: 5585
Credit: 7672636237
RAC: 1727435

MontanaDoug wrote: I have

MontanaDoug wrote:

I have been following this thread (and a ton of others) since you're touching a number of my concerns and appear to have a very similar hardware setup.  I don't want to interrupt the author here so I'll open a new topic "System stability and efficiency".

Sorry for the "break-in".

Stay safe, Doug

Not a problem.  And for anyone who can't "find" the thread it is here

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)

Tom M
Tom M
Joined: 2 Feb 06
Posts: 5585
Credit: 7672636237
RAC: 1727435

Tom M wrote: OBTW, 

Tom M wrote:

OBTW,  apparently you can run Rx 580's on the same system as Rx 5700's (Under Windows 10) just not Ubuntu drivers. Here (3 R5700s and 2 R580s)

While the Rx 580 8GB is not happy running 3 GR threads (apparently) on the video cards (some of the tasks were stalling with like 6 hours on the clock before I aborted them) they will run 2 indefinitely.

After I swapped in a different MB with an AMD 2700x installed I hooked up the 2 Rx 580's again and am running "everybody" with 2 threads.

The RAC has headed north again :)   I am currently ballparking it to peak at (I hope) around 2,700,000 RAC simply because the 3 Rx 5700's have been peaking around 2,000,000 and the Rx 580's peaked around 800-900,000 on two different machines.

Tom M

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)

Tom M
Tom M
Joined: 2 Feb 06
Posts: 5585
Credit: 7672636237
RAC: 1727435

I have a system that will be

I have a system that will be upgrading to running lots of Rx 570/580 GPUs (6 to start with).  And the odd Nvidia gpu for the moment.

I have been browsing the Top 50 list to see what model of Rx 500 seems to be very productive.

I think I have seen a pair of Rx 480s with 4MB of memory being very productive.

Right now it looks like this system will be an "all" Gravity Wave gpu cruncher.

1) Should I be limiting my Rx shopping to the Rx 500 series or should I really be taking a look at the Rx 460 et al?

2) Should I be limiting my Rx shopping to "XFX" models?

3) How many threads are you running on your Rx 4xx/5xx?  (presumably 1 or 2).

Given the price surge on GPUs, I am certainly trying to be a bottom feeder on the capital costs.  I would like to decide what make/model of Rx 4xx/5xx I should be shopping for to grow this system to about 9 GPUs (which is all I can comfortably accommodate at this time).

Discussion?

Tom M

 

 

A Proud member of the O.F.A.  (Old Farts Association).  Be well, do good work, and keep in touch.® (Garrison Keillor)

Jim1348
Jim1348
Joined: 19 Jan 06
Posts: 463
Credit: 257957147
RAC: 0

Tom M wrote:Given the price

Tom M wrote:
Given the price surge on GPUs, I am certainly trying to be a bottom feeder on the capital costs.  I would like to decide what make/model of Rx 4xx/5xx I should be shopping for to grow this system to about 9 GPUs (which is all I can comfortably accommodate at this time).

My knowledge is decidedly limited, but the last time I shopped the RX 570 seemed to be the best for output verses price, and power dissipation too, which is important to me.  

I hadn't used it for awhile, but thought I would try it as a second GPU on a new Win10 installation, with a GTX 1650 Super being the other card.  Big mistake.  It worked for a few hours, and then I did something wrong, though I don't recall what.  (Though it was probably trying to upgrade to the latest driver).  I spent the next two days getting the OS reinstalled and back up to speed, more or less.

I almost threw it out, but saw the prices of cards, and decided to hang onto it (I have two).  I think I will try one or both on a Linux machine, but never in a mixed environment. 

Good luck.

 

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