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There is a new sgminer 5.3.1 fork from tpruvot with support for both AMD and Nvidia GPUs for mining Decred (source) that should work better than the previously available official cgminer fork for DCR. This sgminer fork comes with support for both protocols for mining Decred, the official getwork and the getwork over stratum implementation from tpruvot and as already mentioned it works on both AMD and Nvidia GPUs (it uses OpenCL on Nvidia as well and not CUDA). We have prepared a 32-bit and a 64-bit Windows binary of the new sgminer 5.3.1 fork compiled with VS2013, but have in mind that the NVML monitoring for Nvidia only works with the 64-bit version and the 32-bit one does seem to provide a bit higher hashrate of the two. In fact we are seeing a bit better hashrate using this sgminer fork on Nvidia than when using tpruvot’s ccMiner with Decred support, so you might want to try it with Nvidia GPUs and see if it will provide a bit more hashrate. AMD miners should have less problematic mining experience when using this sgminer fork compared to the various cgminer releases for Decred and with this miner you should be able to get better results when mining on pools with getwork over stratum support as compared to ones with only standard getwork implementation available.
– To download and try the new AMD/Nvidia sgminer 5.3.1 tpruvot for Decred for Windows OS…
The latest release of the ccMiner 1.7 fork by tpruvot (source) has added some new interesting functionality among which is the ability to run a benchmark on all of the supported crypto algorithms by the software. There is no more need to go through all of the algorithms one by one and record the returned results, all you have to do is run ccminer.exe --benchmark and the miner will go through all of the algorithms automatically and print out the hashrate you get with your particular Nvidia GPU. It can work with single and multiple GPUs in the system, but if you have more than one and you do not specify which one you want tested it will benchmark all of them and display individual hashrate. Thanks to the ease of use of this feature and the fact that it needs just about 5 minutes to run we might soon start seeing crypto hashrate benchmarks included in Nvidia GPU reviews on sites that do hardware reviews, but generally do not bother to test crypto mining performance.
Since the output in the console when you run ccMiner in benchmark mode is quite big, you might want to automate the run and have the results written to a text file by default that you can later open and view more easily than having to scroll in a console window. To do so and have the results written to benchmark.txt file just run the following command line: ccminer.exe --benchmark > benchmark.txt
Here is a sample benchmark run on a GTX 980 Ti GPU:
*** ccminer 1.7 for nVidia GPUs by tpruvot@github ***
Built with VC++ 2013 and nVidia CUDA SDK 6.5Originally based on Christian Buchner and Christian H. project
Include some of the work of djm34, sp, tsiv and klausT.BTC donation address: 1AJdfCpLWPNoAMDfHF1wD5y8VgKSSTHxPo (tpruvot)
[2015-11-07 14:08:41] Starting benchmark mode with blakecoin
[2015-11-07 14:08:41] NVAPI GPU monitoring enabled.
[2015-11-07 14:08:41] 1 miner thread started, using 'blakecoin' algorithm.
[2015-11-07 14:08:44] GPU #0: GeForce GTX 980 Ti, 1503.75 MH/s
[2015-11-07 14:08:47] GPU #0: GeForce GTX 980 Ti, 1485.03 MH/s
[2015-11-07 14:08:47] GPU #0: blakecoin hashrate = 1494.39 MH/s
[2015-11-07 14:08:47] Benchmark algo blake...
[2015-11-07 14:08:51] GPU #0: GeForce GTX 980 Ti, 997.23 MH/s
[2015-11-07 14:08:56] GPU #0: GeForce GTX 980 Ti, 990.02 MH/s
[2015-11-07 14:08:56] GPU #0: blake hashrate = 993.62 MH/s
[2015-11-07 14:08:56] Benchmark algo bmw...
[2015-11-07 14:08:58] GPU #0: GeForce GTX 980 Ti, 1384.80 MH/s
[2015-11-07 14:09:02] GPU #0: GeForce GTX 980 Ti, 1389.88 MH/s
[2015-11-07 14:09:02] GPU #0: bmw hashrate = 1387.34 MH/s
[2015-11-07 14:09:03] Benchmark algo deep...
[2015-11-07 14:09:12] GPU #0: GeForce GTX 980 Ti, 32.92 MH/s
[2015-11-07 14:09:21] GPU #0: GeForce GTX 980 Ti, 32.93 MH/s
[2015-11-07 14:09:22] GPU #0: deep hashrate = 32.93 MH/s
[2015-11-07 14:09:22] Benchmark algo fresh...
[2015-11-07 14:09:28] GPU #0: GeForce GTX 980 Ti, 12.02 MH/s
[2015-11-07 14:09:32] GPU #0: GeForce GTX 980 Ti, 12.03 MH/s
[2015-11-07 14:09:32] GPU #0: fresh hashrate = 12.03 MH/s
[2015-11-07 14:09:32] Benchmark algo fugue256...
[2015-11-07 14:09:34] GPU #0: GeForce GTX 980 Ti, 373.83 MH/s
[2015-11-07 14:09:42] GPU #0: GeForce GTX 980 Ti, 376.02 MH/s
[2015-11-07 14:09:42] GPU #0: fugue256 hashrate = 376.02 MH/s
[2015-11-07 14:09:42] Benchmark algo groestl...
[2015-11-07 14:09:45] GPU #0: GeForce GTX 980 Ti, 30.83 MH/s
[2015-11-07 14:09:55] GPU #0: GeForce GTX 980 Ti, 30.76 MH/s
[2015-11-07 14:09:55] GPU #0: groestl hashrate = 30.80 MH/s
[2015-11-07 14:09:56] Benchmark algo heavy...
[2015-11-07 14:10:02] GPU #0: GeForce GTX 980 Ti, 30.82 MH/s
[2015-11-07 14:10:05] GPU #0: GeForce GTX 980 Ti, 30.86 MH/s
[2015-11-07 14:10:05] GPU #0: heavy hashrate = 30.84 MH/s
[2015-11-07 14:10:05] Benchmark algo keccak...
[2015-11-07 14:10:10] GPU #0: GeForce GTX 980 Ti, 347.10 MH/s
[2015-11-07 14:10:15] GPU #0: GeForce GTX 980 Ti, 394.14 MH/s
[2015-11-07 14:10:15] GPU #0: keccak hashrate = 394.14 MH/s
[2015-11-07 14:10:15] Benchmark algo jackpot...
[2015-11-07 14:10:20] GPU #0: GeForce GTX 980 Ti, 6292.92 kH/s
[2015-11-07 14:10:22] GPU #0: GeForce GTX 980 Ti, 6595.98 kH/s
[2015-11-07 14:10:22] GPU #0: jackpot hashrate = 6444.45 kH/s
[2015-11-07 14:10:23] Benchmark algo luffa...
[2015-11-07 14:10:23] GPU #0: GeForce GTX 980 Ti, 111.07 MH/s
[2015-11-07 14:10:23] GPU #0: GeForce GTX 980 Ti, 6572.03 MH/s
[2015-11-07 14:10:27] GPU #0: luffa hashrate = 6572.03 MH/s
[2015-11-07 14:10:27] Benchmark algo lyra2...
[2015-11-07 14:10:32] GPU #0: GeForce GTX 980 Ti, 1078.98 kH/s
[2015-11-07 14:10:33] GPU #0: GeForce GTX 980 Ti, 1119.20 kH/s
[2015-11-07 14:10:33] GPU #0: lyra2 hashrate = 1099.09 kH/s
[2015-11-07 14:10:34] Benchmark algo lyra2v2...
[2015-11-07 14:10:39] GPU #0: GeForce GTX 980 Ti, 9949.18 kH/s
[2015-11-07 14:10:42] GPU #0: GeForce GTX 980 Ti, 12.46 MH/s
[2015-11-07 14:10:42] GPU #0: lyra2v2 hashrate = 12.46 MH/s
[2015-11-07 14:10:43] Benchmark algo myr-gr...
[2015-11-07 14:10:53] GPU #0: GeForce GTX 980 Ti, 43.80 MH/s
[2015-11-07 14:11:03] GPU #0: GeForce GTX 980 Ti, 43.67 MH/s
[2015-11-07 14:11:03] GPU #0: myr-gr hashrate = 43.73 MH/s
[2015-11-07 14:11:03] Benchmark algo neoscrypt...
[2015-11-07 14:11:03] GPU #0: Using 8192 cuda threads
[2015-11-07 14:11:13] GPU #0: GeForce GTX 980 Ti, 660.65 kH/s
[2015-11-07 14:11:23] GPU #0: GeForce GTX 980 Ti, 661.27 kH/s
[2015-11-07 14:11:23] GPU #0: neoscrypt hashrate = 660.96 kH/s
[2015-11-07 14:11:23] Benchmark algo nist5...
[2015-11-07 14:11:31] GPU #0: GeForce GTX 980 Ti, 20.42 MH/s
[2015-11-07 14:11:33] GPU #0: GeForce GTX 980 Ti, 23.67 MH/s
[2015-11-07 14:11:33] GPU #0: nist5 hashrate = 22.04 MH/s
[2015-11-07 14:11:33] Benchmark algo penta...
[2015-11-07 14:11:41] GPU #0: GeForce GTX 980 Ti, 12.11 MH/s
[2015-11-07 14:11:42] GPU #0: GeForce GTX 980 Ti, 15.95 MH/s
[2015-11-07 14:11:42] GPU #0: penta hashrate = 14.03 MH/s
[2015-11-07 14:11:43] Benchmark algo quark...
[2015-11-07 14:11:47] GPU #0: GeForce GTX 980 Ti, 14.64 MH/s
[2015-11-07 14:11:49] GPU #0: GeForce GTX 980 Ti, 15.42 MH/s
[2015-11-07 14:11:49] GPU #0: quark hashrate = 15.03 MH/s
[2015-11-07 14:11:50] Benchmark algo qubit...
[2015-11-07 14:11:52] GPU #0: GeForce GTX 980 Ti, 15.95 MH/s
[2015-11-07 14:11:53] GPU #0: GeForce GTX 980 Ti, 15.82 MH/s
[2015-11-07 14:11:53] GPU #0: qubit hashrate = 15.82 MH/s
[2015-11-07 14:11:53] Benchmark algo skein...
[2015-11-07 14:11:58] GPU #0: GeForce GTX 980 Ti, 332.57 MH/s
[2015-11-07 14:12:01] GPU #0: GeForce GTX 980 Ti, 330.01 MH/s
[2015-11-07 14:12:01] GPU #0: skein hashrate = 331.29 MH/s
[2015-11-07 14:12:02] Benchmark algo skein2...
[2015-11-07 14:12:05] GPU #0: GeForce GTX 980 Ti, 85.98 MH/s
[2015-11-07 14:12:07] GPU #0: GeForce GTX 980 Ti, 219.13 MH/s
[2015-11-07 14:12:07] GPU #0: skein2 hashrate = 219.13 MH/s
[2015-11-07 14:12:07] Benchmark algo s3...
[2015-11-07 14:12:08] GPU #0: GeForce GTX 980 Ti, 28.61 MH/s
[2015-11-07 14:12:17] GPU #0: GeForce GTX 980 Ti, 29.49 MH/s
[2015-11-07 14:12:17] GPU #0: s3 hashrate = 29.49 MH/s
[2015-11-07 14:12:18] Benchmark algo x11...
[2015-11-07 14:12:24] GPU #0: GeForce GTX 980 Ti, 9270.83 kH/s
[2015-11-07 14:12:29] GPU #0: GeForce GTX 980 Ti, 9906.28 kH/s
[2015-11-07 14:12:29] GPU #0: x11 hashrate = 9906.28 kH/s
[2015-11-07 14:12:29] Benchmark algo x13...
[2015-11-07 14:12:38] GPU #0: GeForce GTX 980 Ti, 8304.47 kH/s
[2015-11-07 14:12:39] GPU #0: GeForce GTX 980 Ti, 8229.94 kH/s
[2015-11-07 14:12:39] GPU #0: x13 hashrate = 8267.20 kH/s
[2015-11-07 14:12:39] Benchmark algo x14...
[2015-11-07 14:12:48] GPU #0: GeForce GTX 980 Ti, 8275.62 kH/s
[2015-11-07 14:12:49] GPU #0: GeForce GTX 980 Ti, 8168.95 kH/s
[2015-11-07 14:12:49] GPU #0: x14 hashrate = 8222.28 kH/s
[2015-11-07 14:12:49] Benchmark algo x15...
[2015-11-07 14:12:58] GPU #0: GeForce GTX 980 Ti, 7292.03 kH/s
[2015-11-07 14:12:59] GPU #0: GeForce GTX 980 Ti, 7233.74 kH/s
[2015-11-07 14:12:59] GPU #0: x15 hashrate = 7262.88 kH/s
[2015-11-07 14:13:00] Benchmark algo x17...
[2015-11-07 14:13:06] GPU #0: GeForce GTX 980 Ti, 6703.77 kH/s
[2015-11-07 14:13:09] GPU #0: GeForce GTX 980 Ti, 6650.18 kH/s
[2015-11-07 14:13:10] GPU #0: x17 hashrate = 6676.98 kH/s
[2015-11-07 14:13:10] Benchmark algo whirlpool...
[2015-11-07 14:13:18] GPU #0: GeForce GTX 980 Ti, 17.52 MH/s
[2015-11-07 14:13:19] GPU #0: GeForce GTX 980 Ti, 17.41 MH/s
[2015-11-07 14:13:19] GPU #0: whirlpool hashrate = 17.47 MH/s
[2015-11-07 14:13:20] Benchmark algo whirlpoolx...
[2015-11-07 14:13:26] GPU #0: GeForce GTX 980 Ti, 250.26 MH/s
[2015-11-07 14:13:36] GPU #0: GeForce GTX 980 Ti, 251.12 MH/s
[2015-11-07 14:13:36] GPU #0: whirlpoolx hashrate = 250.69 MH/s
[2015-11-07 14:13:37] Benchmark algo zr5...
[2015-11-07 14:13:46] GPU #0: GeForce GTX 980 Ti, 1907.64 kH/s
[2015-11-07 14:13:55] GPU #0: GeForce GTX 980 Ti, 2107.89 kH/s
[2015-11-07 14:13:55] GPU #0: zr5 hashrate = 2007.77 kH/s
[2015-11-07 14:13:55] Benchmark results for GPU #0 - GeForce GTX 980 Ti:
[2015-11-07 14:13:55] blakecoin : 1459369.4 kH/s, 1 MB, 4194304 thr.
[2015-11-07 14:13:55] blake : 970336.8 kH/s, 1 MB, 4194304 thr.
[2015-11-07 14:13:55] bmw : 1354822.5 kH/s, 65 MB, 2097152 thr.
[2015-11-07 14:13:55] deep : 32154.5 kH/s, 33 MB, 524288 thr.
[2015-11-07 14:13:55] fresh : 11745.7 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] fugue256 : 367203.5 kH/s, 129 MB, 4194304 thr.
[2015-11-07 14:13:55] groestl : 30076.7 kH/s, 1 MB, 524288 thr.
[2015-11-07 14:13:55] heavy : 30115.6 kH/s, 147 MB, 524032 thr.
[2015-11-07 14:13:55] keccak : 384901.8 kH/s, 129 MB, 2097152 thr.
[2015-11-07 14:13:55] jackpot : 6293.4 kH/s, 106 MB, 1048576 thr.
[2015-11-07 14:13:55] luffa : 6417996.4 kH/s, 129 MB, 2097152 thr.
[2015-11-07 14:13:55] lyra2 : 1073.3 kH/s, 515 MB, 65536 thr.
[2015-11-07 14:13:55] lyra2v2 : 12163.3 kH/s, 393 MB, 262144 thr.
[2015-11-07 14:13:55] myr-gr : 42708.4 kH/s, 9 MB, 131072 thr.
[2015-11-07 14:13:55] neoscrypt : 645.5 kH/s, 261 MB, 8192 thr.
[2015-11-07 14:13:55] nist5 : 21525.5 kH/s, 65 MB, 1048576 thr.
[2015-11-07 14:13:55] penta : 13701.2 kH/s, 33 MB, 524288 thr.
[2015-11-07 14:13:55] quark : 14678.7 kH/s, 86 MB, 1048576 thr.
[2015-11-07 14:13:55] qubit : 15453.1 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] skein : 323525.3 kH/s, 1 MB, 1048576 thr.
[2015-11-07 14:13:55] skein2 : 213998.6 kH/s, 33 MB, 524288 thr.
[2015-11-07 14:13:55] s3 : 28802.4 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] x11 : 9674.1 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] x13 : 8073.4 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] x14 : 8029.6 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] x15 : 7092.7 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] x17 : 6520.5 kH/s, 609 MB, 524288 thr.
[2015-11-07 14:13:55] whirlpool : 17056.7 kH/s, 33 MB, 524288 thr.
[2015-11-07 14:13:55] whirlpoolx : 244812.1 kH/s, 65 MB, 1048576 thr.
[2015-11-07 14:13:55] zr5 : 1960.7 kH/s, 84 MB, 262144 thr.
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…