lolMiner 0.9.4 (Currently Linux only) released

Published on: 2019-12-13

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lolMiner 0.9.4

Changes from 0.9.3

  • New GRIN-AT31 performance code for Vega (+7%) and Navi (+12%). Requires amdgpu-pro 18.50 or newer or ROCm 2.10 driver
  • Experimental support for Cuckatoo-32 (use --coin GRIN-AT32) on 8G AMD cards (see further notes)
  • Windows release postponed due to incompatibilities with the new performance codes.

Expected performance (C31)

Radeon VII (Stock, 19.30): 1.91 g/s
Radeon VII (1330 / 975 / 775mV, ROCm 2.10): 1.55 g/s
Vega 64 (1550 / 1100 / 1000mV, ROCm 2.10): 1.45 g/s
Vega 64 (1350 / 1025 / 875mV, ROCm 2.10): 1.25 g/s
Vega 64 (1350 / 1025 / 875mV, 19.30): 1.22 g/s
Vega 56 (1270 / 900 / 862mV, 19.30): 1.1 g/s
RX 5700 (Power Color Red Dragon, Stock, 19.30): 0.99 g/s

Expected performance (C32)

Radeon VII (Stock): 0.5 g/s
RX 64 (Stock): 0.39 g/s
RX 56 (Stock): 0.35 g/s

About Cuckatoo-32 (Grin)

The primary grin proof of work Cuckatoo 31+ is designed in a way that the original instance - cuckatoo-31 - will fade out beginning mid January 2020, which means its difficulty will increase slowly over a period of 31 weeks until it gets impossible to mine a C31 block on the chain. But as by design also more difficult instances of Cuckatoo, namely Cuckatoo-32 ... Cuckatoo-63 are implemented on the chain that also can make blocks. The difficulties of this higher instances will remain stable, such that at some point it will be more profitable to mine Cuckatoo-32 instead of Cuckatoo-31 (likely from mid of February).

lolMiner 0.8.4 provides the first public implementation on a C32 GPU miner for 8G cards. The code is not yet tuned to the max and thus flagged experimental. When you want to pool mine with it make sure the pool supports Cuckatoo-32. Some pools (e.g. grinmint.com) - especially the pools using the reference pool software - support it on their C31 ports without mentioning it, other pools currently reject C32 shares. Solo mining with C32 will work as usual. Note that a share of C32 has ~2.064 times the weight of a C31 share and will thus rewarded higher / has a higher chance to mine a block by that factor.

Currently there are already two solo mined C32 blocks on the Grin blockchain using an early version of the code published with lolMiner 0.8.4. The two blocks have height 430112 and 430255.

Have fun experimenting with C32.

lolMiner as a GPU miner for AMD.

Go to the lolMiner 0.9.4 (Currently Linux only) released download page