T-Rex 0.26.8 ETHW, ETC (+dual mining) GPU miner

[ExEric3]

Hmm, very curious indeed. I did a benchmark with my 1070Ti with --mt 5 on Linux and didn't notice a hashrate decrease for 383/384 epoch threshold. Could you try benchmarking without --mt?
UPD: What OS are you using? Win 7 by any chance?

How I typed from start. Mem tweak doesnt work anymore. Now you can see its due DAG size - specified EPOCH number. Another fact is Mem tweak just works for GDDR5x memory. Your 1070Ti is just GDDR5. But its there small hashrate drop but not significant like with mem tweak switch.

Also look on that generating times for DAG which proove mem tweak is off. (8 secs with mem tweak and 12 secs without him)

20201121 13:45:23 WARN: BENCHMARK MODE (ethash)
20201121 13:45:23 WARN: EPOCH 383
20201121 13:45:23 WARN: GPU #0(000100): ASUS GeForce GTX 1080, intensity set to 20
20201121 13:45:26 GPU #0: generating DAG 3.99 GB for epoch 383 ...
20201121 13:45:38 GPU #0: DAG generated [time: 12377 ms], memory left: 3.58 GB
20201121 13:45:55 GPU #0: using kernel #2
20201121 13:45:56 Total: 21.47 MH/s
20201121 13:45:58 Total: 21.48 MH/s

20201121 13:46:40 WARN: BENCHMARK MODE (ethash)
20201121 13:46:40 WARN: EPOCH 384
20201121 13:46:40 WARN: GPU #0(000100): ASUS GeForce GTX 1080, intensity set to 20
20201121 13:46:43 GPU #0: generating DAG 4.00 GB for epoch 384 ...
20201121 13:46:55 GPU #0: DAG generated [time: 12389 ms], memory left: 3.57 GB
20201121 13:47:13 GPU #0: using kernel #5
20201121 13:47:14 Total: 20.87 MH/s
20201121 13:47:16 Total: 20.88 MH/s

[1714769386]

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[1714769386]

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[trexminer]

How I typed from start. Mem tweak doesnt work anymore. Now you can see its due DAG size - specified EPOCH number. Another fact is Mem tweak just works for GDDR5x memory. Your 1070Ti is just GDDR5. But its there small hashrate drop but not significant like with mem tweak switch.

Also look on that generating times for DAG which proove mem tweak is off. (8 secs with mem tweak and 12 secs without him)

20201121 13:45:23 WARN: BENCHMARK MODE (ethash)
20201121 13:45:23 WARN: EPOCH 383
20201121 13:45:23 WARN: GPU #0(000100): ASUS GeForce GTX 1080, intensity set to 20
20201121 13:45:26 GPU #0: generating DAG 3.99 GB for epoch 383 ...
20201121 13:45:38 GPU #0: DAG generated [time: 12377 ms], memory left: 3.58 GB
20201121 13:45:55 GPU #0: using kernel #2
20201121 13:45:56 Total: 21.47 MH/s
20201121 13:45:58 Total: 21.48 MH/s

20201121 13:46:40 WARN: BENCHMARK MODE (ethash)
20201121 13:46:40 WARN: EPOCH 384
20201121 13:46:40 WARN: GPU #0(000100): ASUS GeForce GTX 1080, intensity set to 20
20201121 13:46:43 GPU #0: generating DAG 4.00 GB for epoch 384 ...
20201121 13:46:55 GPU #0: DAG generated [time: 12389 ms], memory left: 3.57 GB
20201121 13:47:13 GPU #0: using kernel #5
20201121 13:47:14 Total: 20.87 MH/s
20201121 13:47:16 Total: 20.88 MH/s

Yes I can see the memtweak is off, thanks. However, I'm very surprised about your 1080 being slower than my 1070Ti on epoch 383. I'm getting 24.5Mh/s with PL 90W, CORE 0, MEM +1000. DAG generation time is ~8.8s, without memory tweaks

[ExEric3]

Yes I can see the memtweak is off, thanks. However, I'm very surprised about your 1080 being slower than my 1070Ti on epoch 383. I'm getting 24.5Mh/s with PL 90W, CORE 0, MEM +1000. DAG generation time is ~8.8s, without memory tweaks

Because u are compareing two different memory architectures. GDDR5x isnt GDDR5 and vice versa. My results are slower because I used default clocks. I dont want burn my house on this Asus Dragon

When I put MEM + 1000 will get generation time 10s and hashrate about 26.5Mh/s - Epoch 383. But still I will not get results like 33Mh/s with enabled mem tweak. You can nicelly see it on Nicehash graphs when someone order ETC hashrate how it all drops since it have different DAG size like ETH currently.

[trexminer]

Because u are compareing two different memory architectures. GDDR5x isnt GDDR5 and vice versa. My results are slower because I used default clocks. I dont want burn my house on this Asus Dragon

When I put MEM + 1000 will get generation time 10s and hashrate about 26.5Mh/s - Epoch 383. But still I will not get results like 33Mh/s with enabled mem tweak. You can nicelly see it on Nicehash graphs when someone order ETC hashrate how it all drops since it have different DAG size like ETH currently.

So, what OS are you using? I'm trying to find a pattern here because I'm hearing other ETH miners have the same issue.

[ExEric3]

So, what OS are you using? I'm trying to find a pattern here because I'm hearing other ETH miners have the same issue.

Windows 7

[trexminer]

So, what OS are you using? I'm trying to find a pattern here because I'm hearing other ETH miners have the same issue.

Windows 7

Ok, thanks. I'm hoping Win10 doesn't have this issue, or Linux at least.

[ethereal1m]

Hello,
do you have hotkey feature to disable GPU in the middle of mining?
regards

[Blockpusher]

When I put MEM + 1000 will get generation time 10s and hashrate about 26.5Mh/s - Epoch 383. But still I will not get results like 33Mh/s with enabled mem tweak. You can nicelly see it on Nicehash graphs when someone order ETC hashrate how it all drops since it have different DAG size like ETH currently.

Hi. Yes, same problem with 1070 on Nicehash DaggerHashimoto pool. Run 27/28Mh then fall to 19/20Mh when switching to ETC Epoch.
I tried with others miners (Gminer, Nanominer, Phoenix) with the same result. Tried with old and newest driver without sucess (Win7).

[trexminer]

Hello,
do you have hotkey feature to disable GPU in the middle of mining?
regards

Hi, unfortunately no

[trexminer]

T-Rex 0.19.0

* Add octopus algorithm (dev fee 2%).
* Load NVRTC library only when required reducing RAM footprint for non-ProgPoW based algorithms
* Remove --gpu-report-interval parameter, now GPU stats summary table is printed every 30s. Other cosmetic changes

NOTE: according to user reports CUDA 10.0 build is faster than CUDA 11.1 on octopus for 16 and 20 series cards.

[weifa]

Great job with T-Rex Miner!  I found your miner on a list of Etchash supported miners, great job supporting the new Ethash variant.

I was wondering if you had any interest in adding support for Ubqhash?

Here's some of the technicals to help explain the algo changes more in depth:  https://blog.ubiqsmart.com/introducing-ubqhash-8fa515befd7

Ubiq has quite a large community of miners, but the current number of mining programs is somewhat limited.  I'm reaching out on behalf of the Ubiq community to see if you're interested in potentially adding Ubqhash support, thanks!

[trexminer]

Great job with T-Rex Miner!  I found your miner on a list of Etchash supported miners, great job supporting the new Ethash variant.

I was wondering if you had any interest in adding support for Ubqhash?

Here's some of the technicals to help explain the algo changes more in depth:  https://blog.ubiqsmart.com/introducing-ubqhash-8fa515befd7

Ubiq has quite a large community of miners, but the current number of mining programs is somewhat limited.  I'm reaching out on behalf of the Ubiq community to see if you're interested in potentially adding Ubqhash support, thanks!

Thanks for reaching out. We might have a look into adding Ubqhash support in the future.

[trexminer]

T-Rex 0.19.1

* ("octopus") Minor performance improvements

[MoneroCrusher]

Any profitable coins that work on 2GB GPUs?

[miner29]

Any profitable coins that work on 2GB GPUs?

BTG

[weifa]

Great job with T-Rex Miner!  I found your miner on a list of Etchash supported miners, great job supporting the new Ethash variant.

I was wondering if you had any interest in adding support for Ubqhash?

Here's some of the technicals to help explain the algo changes more in depth:  https://blog.ubiqsmart.com/introducing-ubqhash-8fa515befd7

Ubiq has quite a large community of miners, but the current number of mining programs is somewhat limited.  I'm reaching out on behalf of the Ubiq community to see if you're interested in potentially adding Ubqhash support, thanks!

Thanks for reaching out. We might have a look into adding Ubqhash support in the future.

That would be great!  I'm happy to help test things out on some of my miners if you're able too.  Cheers!

[LukaL]

Hello guys... I need some help here.

I switched my gpus (gtx 1070 8gb) to ETH after a long time, and what I see is some strange behavior. It seems that hashrate is low, and memory overclock doesn't have any effect.
What I was able to google out is that apparently when there is more than 50% of 1070's gpu memory utilized it starts to behave strangely. When I try mining ETC everything is normal (sure ETC have DAG size much lower, after fork).
So mining ETC I am able to get 33 MHs at 90W, while
mining ETH I get 28 MHs at 115W ... you see my despair ... also mining ETH overclockin core have positive effect on hashrate, while overclocking memory doesn't have any impact - which is not normal for ethash.

I was not able to find any solution to this.
So is there any workaround this issue?
Thanks for your help Cheers

[rotor33]

Fails on Game Ready Driver 460.79

20201209 17:22:39 T-Rex NVIDIA GPU miner v0.18.11  -  [CUDA v11.10]
20201209 17:22:39 r.2c8851280f45
20201209 17:22:39
20201209 17:22:40 WARN: WATCHDOG: T-Rex does not exist anymore, restarting...
20201209 17:22:43 T-Rex NVIDIA GPU miner v0.18.11  -  [CUDA v11.10]
20201209 17:22:43 r.2c8851280f45
20201209 17:22:43
20201209 17:22:43 WARN: WATCHDOG: T-Rex does not exist anymore, restarting...
20201209 17:23:45 T-Rex NVIDIA GPU miner v0.19.1  -  [CUDA v10.0]
20201209 17:23:45 r.99a7206c3590
20201209 17:23:45
20201209 17:23:46 WARN: WATCHDOG: T-Rex does not exist anymore, restarting...
20201209 17:23:48 T-Rex NVIDIA GPU miner v0.19.1  -  [CUDA v10.0]
20201209 17:23:48 r.99a7206c3590
20201209 17:23:48
20201209 17:23:49 WARN: WATCHDOG: T-Rex does not exist anymore, restarting...

[sxemini]

Hello guys... I need some help here.

I switched my gpus (gtx 1070 8gb) to ETH after a long time, and what I see is some strange behavior. It seems that hashrate is low, and memory overclock doesn't have any effect.
What I was able to google out is that apparently when there is more than 50% of 1070's gpu memory utilized it starts to behave strangely. When I try mining ETC everything is normal (sure ETC have DAG size much lower, after fork).
So mining ETC I am able to get 33 MHs at 90W, while
mining ETH I get 28 MHs at 115W ... you see my despair ... also mining ETH overclockin core have positive effect on hashrate, while overclocking memory doesn't have any impact - which is not normal for ethash.

I was not able to find any solution to this.
So is there any workaround this issue?
Thanks for your help Cheers

Here i give you a reminder. My answer for you in the Phönixminer Thread

it is normal for the Nvidia Pascal GPU´s (all gtx 10x0) This cards slow down with every new DAG epoch, same HARDWARE bug as the AMD R9 290 and R9 390 had in the past.
So there is no solution. You can check this, if you benchmark ETH in Epoch 0 and Epoch 400 for example.

My P106 cards do 26mh at the beginning, now i am down to 24mh.

[sxemini]

Getting error: WARN: WATCHDOG: T-Rex does not exist anymore, restarting...

T-rex 0.19.1 CUDA10

Just updated to NVIDIA drivers 460.79, Windows 10 x64; was working well with the previous driver version.

Nvidia changed some things in new driver. Why you update? Newer driver bring not more hashrate. I can´t understand why all people update the driver if a new one is released.