Fantastic work,
Just wanted to point out using the 4gb miner with an 8gb card, I tried using -i 2 but just cranks out a lot of invalid low diff shares. I can sort of figure out why, my lack of expertise can't explain it.
*edit* any word on r9 280s?
Yeah, I tried -i 2 as well yesterday on a 8gb card. There must be a bug with handling the parallel instances somewhere. But it's rather pointless anyways as for 8gb using the other version is faster. So, I'll probably just remove the code handling parallel solutions and hardcode it to 1 for Zero. It should work on any card that has at least 4gb of ram. If it doesn't try to reboot the machine and make sure the miner and nothing else runs.
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Is it possible to use mixed rigs? I haven't seen an option to select which card to mine with in the miner...
Yes, you can select the cards with '-d N' were N is the number. Use --list-devices to see which device has which number. Then, just run two instances of the miner, one for the 8GB cards and one for the 4GB cards. Linux version of the 4GB miner will be published soon.
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While the web frontend for hold.optiminer.pl is "up and down like a yoyo" mining seems to always work, even when the frontend ist down. So, just mine to the pool and observe hodlcoins as they come in to your wallet.
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Pool is up again. It should now get restarted daily automatically.
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Mining at hodl.optiminer.pl has always worked, just the web server that shows the stats freezes from time to time...
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Thank you so much for the --pci-mode update. This has made a 7-8 problem cards work again and I am able to support using your miner as I had pre 1.6.
Which modes does work on the problematic cards?
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Can I has GPU miner for NVidia + Linux plz? Not from me for now. When the coin gains value someone will port a zcash gpu miner for sure.
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Can you explain in detail what the differences are between the pci-modes?
They use different mechanisms to transfer data between CPU and GPU. 1.6.2 used PCI mode 0 as default. 1.7 uses 2 as default (which is very similar to 0). Mode 1/3 are closer to what 1.5 did.
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Dear Optiminer Support, I would like to show HD7950 3G mine with Claymore and Optiminer - Claymore V12.2: I got 228-230 sol per card. so 5 x 7950 ~ 1150 sol. Wat on wall: 670wat. - Optiminer V1.7 : I got 206-211 sol per card. So 5 x 7950 ~ 1040 sol. Wat on wall: 678wat.
What driver are you using? Note that you need to use Catalyst 15.12 to get the best result. Also do not forget to deduct the 2.5% mining from from Claymore, so from 228 sol/s you actually get only 222 for you.
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Optiminer v1.7.0 released![1.7.0] New --pci-modes (0-3). Try if you see GPU freezes. [1.7.0] Reduced CPU utilization. [1.7.0] Small performance improvement ~1%. Enjoy!
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I will release a closed-source GPU miner with 2.5% dev fee in the next days. It requires AMD cards with at least 8GB memory.
Testing it right now, it gives 8-9 Sol/s on a RX480.
:-( And I wanted to learn how this stuff actually works and look at the source or at least at the fixes necessary to make tromps solver work... Very sad... Make sure you have the blake2b personalization correct: https://github.com/zerocurrency/zero/blob/master/src/crypto/equihash.cpp#L36That's what I struggled with.
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I will release a closed-source GPU miner with 2.5% dev fee in the next days. It requires AMD cards with at least 8GB memory.
Testing it right now, it gives 8-9 Sol/s on a RX480.
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Opti when will the new release?
Code is done, doing final testing for 1.7. Then, I just need to build it for all platforms. 1-2 days.
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Further speed improvements are very difficult, indeed. I have been experimenting with a different algorithm, but that is (currently) still slower than the current one. Though there is still more room for optimization there.
I plan to release an update on the current algorithm that should bring a small improvement, probably by the end of the week.
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Optiminer should be faster. Do not forget that you have to subtract 2.5% for the dev fee on Claymore while optiminer shows hash rates with dev fee subtracted already!
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I strongly recommend to use Linux for the RX480.
May i ask why? Some of the optimizations do not work with the newer windows drivers. And the RX480 do not work with the old windows driver. So, fully speed for the RX480 only on Linux where all optimizations work with the newer amdgpu-pro drivers that support RX480.
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no speed increase in rx 480 windows 10 64 bit
Use Claymore, it's faster for RX480 on Windows 10 I strongly recommend to use Linux for the RX480.
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