2 GPU prob

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UBT - Mikee
Marvin the Dalek
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Re: 2 GPU prob

Post by UBT - Mikee »

Hi

Right sorted it!

Tasks ARE taking just 17 minutes.

Take a look at this WU https://moowrap.net/result.php?resultid=63919674
CPU and run time is 31 mins 38 seconds, but if you look at the start and finish times (8:57 to 9:14) it's 17 mins. I was watching the WU in the manager and couldn't understand why it was at 90% at around 10 mins.

So Moo seems to have a error at their side!

Mike
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Woodles
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Re: 2 GPU prob

Post by Woodles »

Hi Mike,

Can you check the Boinc Manager messages to see when it thinks it started that task?

Seems to have been reported straight away so the finish times should be accurate.

Mark
UBT - Mikee
Marvin the Dalek
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Re: 2 GPU prob

Post by UBT - Mikee »

Hi

https://moowrap.net/result.php?resultid=63918168

According to the event log the last one started at 9:31 and finished at 9:49 = 18 minutes. STDERR txt agrees with start/finish times.

Mike
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Woodles
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Re: 2 GPU prob

Post by Woodles »

Hi Mike,

Wonder why Boinc/Moo thinks it took 31 minutes then?

Mark
UBT - Timbo
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Re: 2 GPU prob

Post by UBT - Timbo »

Woodles wrote:Hi Mike,

Wonder why Boinc/Moo thinks it took 31 minutes then?

Mark
Hi Mark

Could it be that Windows is getting confused and seeing TWO GPU's but (presumably) only ONE monitor and hence BOINC isn't refreshing the screen at the right time, so Windows isn't updated and hence doesn't update the BOINC Manager logs in a timely fashion?

I do recall, in the past that if one has a multiple GPU rig, that a dummy VGA plug is sometimes required to force windows to think a second (and subsequent) monitor is connected - so, might that be related?

regards
Tim
UBT - Mikee
Marvin the Dalek
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Location: North Wales

Re: 2 GPU prob

Post by UBT - Mikee »

UBT - Timbo wrote:
I do recall, in the past that if one has a multiple GPU rig, that a dummy VGA plug is sometimes required to force windows to think a second (and subsequent) monitor is connected - so, might that be related?

regards
Tim
Hi
When I was putting in the new card I was looking for a link to connect the 2 cards together (Crossfire?) - I had a card in the original box that looked like a link but there's nowhere to fit them on either of the cards so I assume they don't bother with that anymore. I do recall that these cards were recommended NOT to link them for BOINC use. I remember about the dummy plug and was thinking about that - haven't got one but I do have a couple of smaller spare monitors - I'm going to connect one up and see what happens.
Mike
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Woodles
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Re: 2 GPU prob

Post by Woodles »

Hi Tim,

I have a couple of systems with dual GPUs in and none of them have dummy monitor plugs (in fact, none of them has any monitor at all connected!) All run at the 'proper' times, roughly half of what a single GPU does.

Mikes results show both GPUs are being recognised and used, it's just by the time the output gets to Moo it thinks they've taken twice as long as they actually have, weird!

Hi Mike,

Crossfire is for AMD cards, SLi for Nvidia but the 1060 does neither (the 1070 and 1080 only do two way, Nvidia is seriously restricting it)

As far as Boinc is concerned, there's no advantage to linking them and some disadvantages so you're not missing anything.

Since the tasks are actually only taking 17 minutes each, does it really matter what the results page says? You're still doing more WUs, you just have a 46 hour day :D

Mark
UBT - Mikee
Marvin the Dalek
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Location: North Wales

Re: 2 GPU prob

Post by UBT - Mikee »

Woodles wrote:
Since the tasks are actually only taking 17 minutes each, does it really matter what the results page says? You're still doing more WUs, you just have a 46 hour day :D

Mark
Hi

You're right - just have to ignore it. Tried a 2nd monitor - didn't make a difference!

Mike
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