The latest update of the AMD OpenCL GPU miner lolMiner 0.9 brings significant performance boost for the Cuckatoo 31 algorithm used by Grin on 8GB AMD cards (+22% on Polaris and up to 30% on Radeon VII) and reduced Grin stale shares. The new version also has the 16GB solver for GRIN-AT31 disabled as it seems that the 8GB solver is faster at the moment in terms of hashrate. Do note that currently AMD Navi support is disabled for the new algorithms and Cuckatoo-31 on ROCm drivers falls back to 4GB kernel.
Expected performance on Cuckatoo-31 (stock settings):
– Sapphire RX 580 Pulse 0.55 g/s
– Radeon Vega 64: 1.2 g/s
– Power Color Radeon VII 1.53 g/s
We remind you that lolMiner is a closed source OpenCL GPU miner available for Windows and Linux as pre-compiled binaries only and that there is a developer fee for using the software (1% for all supported algorithms). The miner should work on Nvidia GPUs with OpenCL, however stability and performance could be far from optimal, so it is best for use with AMD GPUs. For Nvidia GPU miner with support for Cuckatoo 31 you can check out the latest GMiner, NMBiner or some of the other option like BMiner etc.