Quote from: dragonmike on April 01, 2019, 10:06:07 AM

Quote from: tvukoman on March 30, 2019, 10:40:47 PM

Quote from: dragonmike on March 30, 2019, 05:54:10 PM

Quote from: seefatlow on March 30, 2019, 09:19:07 AM

OK. I have been trying over several days to replicate the results from pbfarmer on cnv8_trtl and I can say that I am unable to get the efficiency reported by him. Any attempt to reach close to his reported voltage levels of 805mv to 840mV resulted in random DEAD GPUs(stuck in enqueue) after 20-30 minutes hashing or significant hashrate drop per GPU

Even at 870mV, I am still unable to get a stable system running. Dead GPUs and hashrate drop to 15kH/s still occurs after several tens of minutes of mining. And the weird thing is hashrate drops happens to Hynix mem GPUs only. Huh

Somehow CN-TRTL algo is more taxing that CN_R? I am able to run CN_R without failures for a week and with lower voltage settings (850mV - 870mV). I can't seem to do this for CN_TRTL

My settings are as below. But the hashrates aren't sustainable

GPUs : Ref Vega 64 and Vega 56 reference bios
V64 cclk/memclk 1220/1100 @ 870mV L28+28 (Samsung mem) - 19.5kH/s
V56 cclk/memclk 1220/940 @ 870mV L24+24 (Samsung mem) - 19.3kH/s (Hynix mem) - 18.7 kH/s
ATW power draw 190W per GPU
Adrenalin Driver 18.6.1

Kerney/Todd,

Any ideas what could possibly be wrong? Unoptimized CN_TRTL code?

That's quite weird, out of my six reference Vega56's (flashed to 64), 4 are hashing rock solid at 1408@825 core / 1107 mem and the weaker two cards get 850mV.
I reckon I could potentially go even lower.
Have you fiddled with your power play tables? Is your SoC set higher? That's quite typical for instability, I can sing a song or two about it...

DragonMike, my SOC on reference V56 (bios V64) is 1199, i think it is becouse i use "Safe" ppt file that u/Hellea make. That is only ppt table that for some reason work stable.
I want to try lower SOC to 1107.

Can you (or someone) share ppt with lover SOC 1107 that work ok for reference V56 (bios changed to V64 samsung mem)?

txs

Sorry dude, I only just saw this.
If you want to revert to 18.6.1 and try my PPT table, I'm happy to send it to you.
Just dm me your email address in that case.

I'm using reference Sapphire RX Vega 56 with 64 bios, so the ppt will reflect that.

I had SoC set to 1200 previously and that wreaked total havoc in my cards' behaviour. Always massive pain to get the cards stable, needed to increase core voltages massively and they just behaved erratically. Getting SoC back to 1107 sorted everything.

@pbfarmer: I'm currently testing my Vegas at 1258 core (OT setting) @ 807mV and they seem to hold for now (except for two weaker cards that won't have anything less than 850mV even at low clocks).

EDIT: 807 didn't cut it. It mined as I changed it on the fly, but would not initialise at this voltage. 815 seems to work (both init and mining) - Couple of hours going, so far so good.

i try to PM but you not received newbie pm Sad

pls send me your ppt table. i have ref vega56(samsung) with 64 bios
i have vega 64LE
and vega 56 nitro+ (hynix) standard bios

pls send me any table. i try with all card but minimum vega vork is 860mv. all lees = dead gpu.
i chg SOC 1107 1099 but 860mv gpu/mem is minimum for work

my mail is livada2@gmail.com

thx