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iceland2k14 / bsgs

Find PrivateKey of corresponding Pubkey(s) using BSGS algo
MIT License
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hi there, #21

Closed dextronomous closed 3 years ago

dextronomous commented 3 years ago

Got one question, am doing a 45000 chunks big 200000000000, is this feasible, the threads i enabled with .py 200000000000 bPfile.bin 24 but it is using 1 cpu to create the files. it has got 24 pythons opened up. but one in use. other 0%, thanks for looking. and was wondering, this file becomes very big. so 1.000.000.000 is 320gb. 10k chunks, so guess around 2 tb? is that smart to use, better? thanks for the help.

iceland2k14 commented 3 years ago

There are some inconsistency in your numbers, but let me explain in simple way.

You need to first see how much RAM you are going to use. That's how you decide bPfile elements. Let's say i have a 32GB RAM in my system of which approx 25GB is free. rest is used by OS and other programs. Then my bloomfile can not be more than 25GB.

By using, 1 billion elements i get 5GB bloom. So it means, i should approx make 4.5 billion (4,500,000,000) elements to run in 32GB system.

bPfile each 1 element is 32 byte. So 4.5 billion items will make 144 GB bPfile which will be converted into 23GB bloomfile and that will be used in your RAM. That is the way to proceed.

dextronomous commented 3 years ago

hi thanks so much for explaining, i am having another issue, can it use more then 1 cpu when creating the bpfile bpfile_2_blooom_dll.py is not using more cpus then one whatever i tried, and that one has only got 10% usage. but now if having 320GB bpfile, and bloom is now 46GB then it means with 192 ram it should be good i guess, now i am gonna do a 1.2t 138GB Bloom thank you., but is very slowly creating the file, all cpus enabled with 24 but nogo there, or 16 or 8 or 4 still only 1 cpu used. thanks again sir. but with the cpu's not being used it takes loong time like a week easy for the bpfile. is there an issue on my side, i have been using it on 1 system right now, but slow.

iceland2k14 commented 3 years ago

If you are in windows, the development branch has a script which creates bloom in batch. But still 1 cpu. As filling bloom in different threads has a huge overhead of modification all the time. This is faster than current main branch script. In case you are still doing big files.