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The Latest Ethminer 0.9.41-genoil-1.0.5 for Windows
19, Mar 2016
The fork of ethminer for Nvidia CUDA GPUs has been updated to a new version – Ethminer 0.9.41-genoil-1.0.5 (source). The latest release of Genoil’s ethminer for CUDA should bring back support for older Compute 3.0 GPUs, so if you have one of these you should check to see if it will work as it should now (if you had issues with the previous 0.9.41-genoil-1.0.4b3 release). It also has some cleaned up code, but you should not expect to see a performance boost with it. Do note that when running with CUDA it will run only on the first GPU, so you need to manually set the option --cuda-devices 0 1 2 3 4 5 to have for example the miner run on a 6-card GPU mining rig. The fork from Genoil, although targeted at Nvidia CUDA miners, will also work on AMD OpenCL GPUs, but there it should not be any different than from the default ethminer that is OpenCL only.
– To download and try the latest Ethminer 0.9.41-genoil-1.0.5 for Windows OS…
Ethminer 0.9.41-genoil-1.0.4b3 (source) is the latest release of Genoil’s CUDA miner forked from the official ethminer that is designed to work on Nvidia CUDA GPUs, but will also work on AMD OpenCL GPUs as well. The latest version adds some useful features for both AMD and Nvidia miners, though there is not much of a difference in terms of performance compared to older releases, so do not expect to see faster hashrate. In fact the hashrate on AMD GPUs has been decreasing over time due to the increasing size od the DAG files used by the miner for mining Ethereum’s Ether (ETH) coins.
The latest release contains more advanced benchmark options that allow you to check how performance changed or will change in time, there is an option to set a custom DAG storage folder and even support for stratum mining without a proxy, although currently limited to support only for Coinotron with more pools to come. We ran a quick test to check how the hashrate changed over time between block 1 and block 1 million of Ethereum on an AMD Radeon R9 280X GPU and on Nvidia Geforce GTX 970 GPU. As you can see from the results below the performance has dropped quite a bit on AMD, but has not changed on Nvidia, do note however that Nvidia-based video cards are slower in terms of mining performance for Ethereum… at least for the moment.
GeForce GTX 970:
Block 1 – 17.31 MHS
Block 1M – 17.31 MHSRadeon R9 280X:
Block 1 – 25.95 MHS
Block 1M – 21.49 MHS
– To download and try the latest Ethminer 0.9.41-genoil-1.0.4b3 for Windows OS…
The developer of the Ethminer fork with Nvidia CUDA support (source) Genoil has released another update and we have compiled a new Windows binary of ethminer with CUDA support. Do note that this Windows binary release is compiled with VS2013 for windows 64-bit and is for CUDA 6.5. The latest version comes with some optimizations and a new command line option cuda-schedule to experiment with that replaces the old cuda-turbo, also note that you may need to manually specify the number of GPUs to use if you have multiple video cards using the cuda-devices command line parameter if the miner fires only on one device by default. Additionally to get better performance you can try adding the following command line parameters to the ethminer:
For OpenCL:
--cl-global-work 16384
For CUDA:--cuda-grid-size 8192 --cuda-block-size 128 --cuda-schedule auto
--cuda-scheduleSet the schedule mode for CUDA threads waiting for CUDA devices to finish work. Default is sync. Possible values for mode are:
auto– Uses a heuristic based on the number of active CUDA contexts in the process C and the number of logical processors in the system P. If C > P, then yield else spin.
spin– Instruct CUDA to actively spin when waiting for results from the device.
yield– Instruct CUDA to yield its thread when waiting for results from the device.
sync– Instruct CUDA to block the CPU thread on a synchronization primitive when waiting for the results from the device.
It seems that the auto mode for cuda-schedule works best for us providing maybe a bit lower maximum hashrate, but a more stable one than the sync that may produce higher maxes, but also lower. You are free to experiment what will work best on your mining configuration however. The Ethminer CUDA fork should work on Compute 2.0 or newer GPUs, but the performance on older GPUs can be worse, also don’t forget that you can run Ethminer in OpenCL mode as well on Nvidia-based video cards and not only on AMD if you are having trouble with the CUDA support or the hashrate you get is lower as compared to OpenCL.
– Download the updated Ethminer CUDA fork compiled for Windows and ready to be used…