Needs -t option to work properly

[Shai0Hulud]

Hi, I just found this handy tool when googling for correct options for cpuminer. I wanted to run 2 instances for 2 projects, since one project has an algo block size of 6MB, I wanted it to combine with a project with a block size of 1MB to use all my cores without exceeding the L3 cache limit.

I dont know if it worked properly back in 2017 with cpuminer when you published this tool, but today you need to set the -t option (threads option) to make it work properly.

So in my opinion, the result should also include "-t # of CPU cores".

eg.: --cpu-affinity 15 --cpu-priority 1 -t 4

Cheers!

[phempshall]

Hi

Thanks for your comment and support.

I believe I left the threads option out on purpose because the difficulty people were having was calculating the affinity value and the threads options was known to be required. Also, I think the quantity of information back in 2017 regarding cpuminer was higher than today so it was much easier to find guides and tutorials.

However, it is a good idea to add the missing threads option as you say (it could alleviate difficulties faced by new users), although I never really intended to make a full-blown configurator app (and I haven't CPU mined for years).

Could you provide a link to the version of cpuminer you are using today?

Cheers,
Paul

Btw, if you run from the command line: cpuminer --help > help.txt it will dump the help parameters to a file called help.txt where you can see all the available options.

[phempshall]

I have just been digging through some old batch files for dual CPU mining cryptonight and lyra2.

On my 4 core / 8 thread Intel. My batch file at the time was this. I assigned 3 threads to the first and 4 to the second, leaving me 1 spare thread.

echo  
echo ## Launching CPUMINER (CryptoNight)
START "CPUMINER 1" /D C:\Users\Paul\Desktop\Mining\NiceHashMiner_v1.7.3.12\bin\ cpuminer_opt_AVX2_AES -a cryptonight -o stratum+tcp://cryptonight.eu.nicehash.com:3355 -O 1MinerXXXXXXXXXXXXXXXXXXXXXXXXXXXX.Main:x -t 3 --cpu-affinity 21 --cpu-priority 1 --api-bind 127.0.0.1:4048

echo  
echo ## Launching CPUMINER (Lyra2RE)
START "CPUMINER 2" /D C:\Users\Paul\Desktop\Mining\NiceHashMiner_v1.7.3.12\bin\ cpuminer_opt_AVX2 -a lyra2 -o stratum+tcp://lyra2re.eu.nicehash.com:3342 -O 1MinerXXXXXXXXXXXXXXXXXXXXXXXXXXXX.Main:x -t 4 --cpu-affinity 106 --cpu-priority 1 --api-bind 127.0.0.1:4049

I was thinking about how to implement this for usage such as above and has actually just made me realize the distinction between cores and threads is wrong in this case.

[phempshall]

In the meantime, you may want to take a look at the fork by @YetAnotherRussian /YetAnotherRussian/cpuminer-affinity-setter who has made some good changes and fixes.

Additionally, there is also a different tool available from @jeremycollake /jeremycollake/affinity-calc.