I have an issue when comparing hash rates reported from cast-xmr and the hashrates I see at the pool (supportxmr).


My benchmark rig is made of 4xVega56 flashed to 64 cards.

The hashrates for the rig shown by cast-xmr are 7870h/s, constant (i.e. no drops or anything). It's very stable within 40h/s.

However, the real hash rate reported by the pool (supportxmr) are lower than expected. I get 7250h/s. This is about 7.8% lower than reported by cast.

If we take into account:

-) 1.5% dev fee: 118,05 h/s
-) Rejected errors from old jobs (2%): 155 h/s

The total is 273h/s or 3.4%

I'm missing a total of 620H/s (7.8%!). That is another 347h/s  4.4% and is a relevant number.

I have no errors or disconnects. I've been chatting with the maintainers of supportxmr and they sustain that the 24hr period shall fall within 0.1-0.2% of the expected hash rate but mostly never beyond 1%. We're talking 4.4% here.

I'd like to ask if anybody is experiencing something similar, or do your real hash rates (from pools) actually match the reported cast-xmr rates?

thanks.

We are well aware.
Until the version before last, it was only supporting Vega. Latest experimental version is more robust, supporting also rx480.
We have our finger on the pulse, and will add it when ready 

apologies about that, keep mixing opengl/cl up. The only other thing I did was to change the default word to a number eg 20000, 50000 etc

Good to have you aboard
What is your hashrate? We have tested the Vega 56 to 1700 H/sec.

With more than 200Watt you can reach more than 2000H/s.
With 1408-1100@905mV my V56 can mine 1970H/s with 165 Watt

I'm having problems with the script. The manual disable/enable works fine.

output of script:
C:\Users\monero\Desktop>devcon.exe disable "PCI\VEN_1002&DEV_687F"
PCI\VEN_1002&DEV_687F&SUBSYS_0B361002&REV_C3\6&2AF6ADFE&0&000000E6: Disable failed
PCI\VEN_1002&DEV_687F&SUBSYS_0B361002&REV_C3\6&2C451A81&0&000000E0: Disable failed
PCI\VEN_1002&DEV_687F&SUBSYS_0B361002&REV_C3\6&21DB5B6B&0&00000008: Disable failed
PCI\VEN_1002&DEV_687F&SUBSYS_0B361002&REV_C3\6&9C9E801&0&000000EB: Disable failed
No matching devices found.

C:\Users\monero\Desktop>timeout /t 5

Obviously it found 4 Cards but was not able to disable it?
I'm on build 1703 and I downloaded devcon.exe the following way:
https[Suspicious link removed]

Thanks for your awesome contribution Mythic

how to overclock the memory above 1100?

why overclock
with 1100 work good and satble
2005h avergae

I have two 3-card vega 56 rigs. All cards are the sapphire ones. Short side story, bought these 14 days ago from newegg for $520 and today I see that they are going for $420 on their eBay site and $470 on their main site. So I call them up to see if they do a price match but they would only do 50% of the $470, telling me some bogus bullcrap that they can only do 50% of the $470 price. So just warning yall when dealing with newegg.

Anyways I been reading up on this thread, the one from reddit, and the other vega thread. Using the latest cast XMR is giving me around 5650  hashrate total for my 3 cards(vs 5500 on XMRstak), on both my rigs. Im getting around 590w of power for each rig which puts my cards at around 170w. This is all on stock everything with me only using the settings recommended for wattman (hbm on, intensity -4%, core 950-905, fan 3000-4900, PL -20%). And so far 0 rejected shares on both rigs mining for at least an hour on the new version.

So overall im pretty happy but i'm wondering if i can push there cards to 2050? I think I read I have to put the memclock to at least 1050 which i know most if not all my cards cant do. I would also like to shave off some power which I think should be doable with a little work. I haven't messed with the cards bios but doesnt seem to be all that difficult to do.