Pages:
Author

Topic: got problem with 5 x 5870 (Read 2876 times)

newbie
Activity: 50
Merit: 0
June 15, 2012, 05:06:15 AM
#26


My apologies to the original poster. Did not intend to hi-jack your post. But this is "desperation time" with these GA-990FXA-UD3 boards

Thanks for the link to the M/board page, been looking for that for weeks. Mentions GA-990FXA-UD3 but does not clarify which Version. That is what I am starting to think is an issue here.

So as not to disrupt this thread anymore I did originally post a question regarding these damn Gigabyte boards in Newbies. So if anybody has any startling revelations regarding making these POS work with more than 3 GPU's please post there.

https://bitcointalksearch.org/topic/four-5850s-on-ga-990fxa-ud5-how-86995

Thanks
legendary
Activity: 1820
Merit: 1000
June 14, 2012, 11:22:44 PM
#25

I see from your first post that you have 5 Cards (5870's)on one M/board using extenders. Would you please be kind enough to tell me exactly what make and model the M/board is and are the extenders 1 - 16 or 16 - 16 or a combo of the two types.
Currently I have two Gigabyte GA-990FXA-UD5 boards that totally refuse to run more than 3 cards (5850), whatever you do or try. They also refuse to reliably boot from USB. They have cost me days and days of "down time" as I fought with them, not to mention the intense frustration!!!.

I need to replace them ASAP but need to know which M/board is a 'proven performer" with 4+ cards.

Thanks

There's a thread for that, check it out:

https://bitcointalksearch.org/topic/motherboards-what-works-wfour-or-more-gpus-list-them-37880
legendary
Activity: 1876
Merit: 1000
June 14, 2012, 11:16:04 PM
#24
I use 2 mobos..

ASUS crosshairV
MSI  gd70

the gd70 will do 6 cards, the crosshairV will do 5 cards.   
newbie
Activity: 50
Merit: 0
June 14, 2012, 10:13:16 PM
#23

I see from your first post that you have 5 Cards (5870's)on one M/board using extenders. Would you please be kind enough to tell me exactly what make and model the M/board is and are the extenders 1 - 16 or 16 - 16 or a combo of the two types.
Currently I have two Gigabyte GA-990FXA-UD5 boards that totally refuse to run more than 3 cards (5850), whatever you do or try. They also refuse to reliably boot from USB. They have cost me days and days of "down time" as I fought with them, not to mention the intense frustration!!!.

I need to replace them ASAP but need to know which M/board is a 'proven performer" with 4+ cards.

Thanks
full member
Activity: 205
Merit: 100
June 06, 2012, 02:31:54 AM
#22
yes,I am using riser for all of them
full member
Activity: 196
Merit: 100
Web Dev, Db Admin, Computer Technician
June 06, 2012, 01:19:28 AM
#21
Are you using risers/extenders?

With my 5970 if I plug it into the board I can clock the engine to 875 without problems but if I put it on a riser I can only clock it to 850. Higher clocks on risers cause issues for me.
full member
Activity: 205
Merit: 100
June 05, 2012, 12:51:31 PM
#20
solved loss network problem by following this link:
http://www.bitcointrading.com/forum/index.php?topic=416.msg1235#msg1235

still testing
full member
Activity: 205
Merit: 100
June 04, 2012, 09:15:13 PM
#19
I set the WORKSIZE=128 today,and I got 373 per card right now

I got another problem,I am using powerline ,but after couple hours,the  network  disconnected, and it won't reconnect,I have to do it manually,anybody has anycode can check the connection and can reconnect automatically?
thanks everyone!
legendary
Activity: 1064
Merit: 1000
June 02, 2012, 11:12:32 PM
#18
850/160 works great on 5870s

what's your core voltage?
Anywhere from 1.125 to 1.175, i.e. stock. If you are undervolting, those probably won't work.

Interesting , I have 3 5870's.

The 2 reference design cards, I am running at 875 mhz core, 150 mhz mem @ 1.025v and getting around around 401 Mh/s for each one.

Then I have the big boy with the arctic cooling set up, 1000 mhz core, 150 mhz mem @ 1.080v and getting around 450 mh/s.... Grin

Using Cgminer 2.4.1 with a 128 work size, 2 vectors..phatk kernel with 11.11 catalyst drivers.

legendary
Activity: 1344
Merit: 1004
June 01, 2012, 04:12:20 AM
#17
Probably is the worksize. Note that I said 160, not 150. For a negligible power bump, you get a few more hashes with that. That is assuming a core of 850 to 900 or so.

+1 for truth. Mind, memory frequencies are approximate. It's hard to explain without rambling, but if you have a bunch of 5830's (different VGA BIOS -may- cause a difference due to possibly different memory latencies coded in. Untested) at a certain core frequency, they should all have a the same "favorite" memory frequency. If you have a 5870 at the same core frequency though, it won't have the same "favorite" as the 5830's as I've found. My 5870's prefer a slightly lower memory at a certain core compared to my 5830's.
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
May 31, 2012, 09:53:06 PM
#16
Probably is the worksize. Note that I said 160, not 150. For a negligible power bump, you get a few more hashes with that. That is assuming a core of 850 to 900 or so.
legendary
Activity: 1820
Merit: 1000
May 31, 2012, 09:51:30 PM
#15
just can get about 333mhash when I set it to 850/150(I can get 410+before when I set to 900/300,big difference)
still testing if it is stable!

thanks for all the suggestions!thanks
wtf 333 is wrong, you must have wrong vectors or something. Sorry I don't have rigs running right now so I can't check.

Add WORKSIZE=128 to your flags. Right now, you are using the default (256), which is probably too large for mem=150. If that doesn't help, go back to mem=300 and try both 128 and 256 as your worksize. You might even try 64 for your worksize - I think some people get best results with that, but 128 is best for me.

I also noticed a weird thing with BAMT where mem=250 (and I think worksize 256) gave me a boost in reported hash rate. But as far as I could tell it actually throttled my share submission rate, so I didn't stick with it.
legendary
Activity: 1344
Merit: 1004
May 31, 2012, 09:49:47 PM
#14
just can get about 333mhash when I set it to 850/150(I can get 410+before when I set to 900/300,big difference)
still testing if it is stable!

thanks for all the suggestions!thanks
wtf 333 is wrong, you must have wrong vectors or something. Sorry I don't have rigs running right now so I can't check.

that sounds like he is using a worksize of 256, which likes 300+ memory and hates 150ish memory. 150ish is only good for 128 worksize.
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
May 31, 2012, 09:32:44 PM
#13
just can get about 333mhash when I set it to 850/150(I can get 410+before when I set to 900/300,big difference)
still testing if it is stable!

thanks for all the suggestions!thanks
wtf 333 is wrong, you must have wrong vectors or something. Sorry I don't have rigs running right now so I can't check.
full member
Activity: 205
Merit: 100
May 31, 2012, 09:30:53 PM
#12
just can get about 333mhash when I set it to 850/150(I can get 410+before when I set to 900/300,big difference)
still testing if it is stable!

thanks for all the suggestions!thanks
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
May 31, 2012, 09:04:38 PM
#11
850/160 works great on 5870s

what's your core voltage?
Anywhere from 1.125 to 1.175, i.e. stock. If you are undervolting, those probably won't work.
full member
Activity: 205
Merit: 100
May 31, 2012, 09:03:03 PM
#10
850/160 works great on 5870s

your core voltage and  mhash?
legendary
Activity: 1820
Merit: 1000
May 31, 2012, 08:55:06 PM
#9
850/160 works great on 5870s

Probably so, but the OP needs to troubleshoot here, so it would be better to start with something really modest to find out if the issue is the clock settings or something else entirely. I have 6 5850s, and all of them are fine with going to 150 memory setting, except one, which gets unhappy much below 450. So it may be that in general 5870s are fine with 850/160 @1.05 volts, but it doesn't follow that all the OP's 5870s are happy with this.
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
May 31, 2012, 08:46:29 PM
#8
850/160 works great on 5870s
legendary
Activity: 1820
Merit: 1000
May 31, 2012, 08:44:19 PM
#7
Looking at your config file, the first thing to try is backing way off of 900 as your core speed. You are are at 1.05 volts, so you are undervolting, and at that voltage 900 is *really* optimistic. Drop down to 600 to start, and I would also raise your memory clock to at least 450 - I have one 5850 that doesn't like to clock much below that. If you can get all 5 working with these moderate settings, then you can start raising the core/lowering the memory to find out where your cards are getting unstable. If you still can't get all 5 working that way, then try one card at a time by disabling the other four to see if it is just one card giving you trouble. Also, what motherboard are you using? I have read that for some motherboards you have to go into bios and change the latency timer to get 5 cards working. The needed change is to go from 64 --> 96. This didn't seem to matter for my biostar, but I read that gigabyte boards need this setting changed. 
Pages:
Jump to: