This is a new implementation of a achi plotter which is designed as a processing pipeline, similar to how GPUs work, only the "cores" are normal software CPU threads.
As a result this plotter is able to fully max out any storage device's bandwidth, simply by increasing the number of "cores", ie. threads.
For <poolkey> and <farmerkey> see output of `achi keys show`.
<tmpdir> needs about 220 GiB space, it will handle about 25% of all writes. (Examples: './', '/mnt/tmp/')
<tmpdir2> needs about 110 GiB space and ideally is a RAM drive, it will handle about 75% of all writes.
Combined (tmpdir + tmpdir2) peak disk usage is less than 256 GiB.
In case of <count> != 1, you may press Ctrl-C for graceful termination after current plot is finished or double Ctrl-c to terminate immediatelly\
Usage:
achi_plot [OPTION...]
-n, --count arg Number of plots to create (default = 1, -1 = infinite)
-r, --threads arg Number of threads (default = 4)
-u, --buckets arg Number of buckets (default = 256)
-v, --buckets3 arg Number of buckets for phase 3+4 (default = buckets)
-t, --tmpdir arg Temporary directory, needs ~220 GiB (default = $PWD)
-2, --tmpdir2 arg Temporary directory 2, needs ~110 GiB [RAM] (default = <tmpdir>)
-d, --finaldir arg Final directory (default = <tmpdir>)
-p, --poolkey arg Pool Public Key (48 bytes)
-f, --farmerkey arg Farmer Public Key (48 bytes)
-G, --tmptoggle Alternate tmpdir/tmpdir2 (default = false)
--help Print help
Make sure to crank up <threads> if you have plenty of cores, the default is 4.
Depending on the phase more threads will be launched, the setting is just a multiplier.
RAM usage depends on <threads> and <buckets>.
With the new default of 256 buckets it's about 0.5 GB per thread at most.
sudo mount -t tmpfs -o size=110G tmpfs /mnt/ram/
Note: 128 GiB System RAM minimum required for RAM disk.
https://github.com/madMAx43v3r/chia-plotter
To make sure the plots are valid you can use the ProofOfSpace tool from achipos:
git clone https://github.com/Achi-Coin/achipos.git
cd achipos && mkdir build && cd build && cmake .. && make -j8
./ProofOfSpace check -f plot-k32-???.plot [num_iterations]- cmake (>=3.14)
- libsodium-dev
sudo apt install -y libsodium-dev cmake g++ git
# Checkout the source and install
git clone https://github.com/Achi-Coin/achi-plotter.git
cd achi-plotter
git submodule update --init
./make_devel.sh
./build/achi_plot --helpThe binaries will end up in build/, you can copy them elsewhere freely (on the same machine, or similar OS).
If a maximum open file limit error occurs (as default OS setting is 256, which is too low for default bucket size of `256`), run this before starting the plotter
ulimit -n 3000
This file limit change will only affect the current session.