prlminer

A GPU miner for Pearl (PRL) on NVIDIA cards, for Windows, Linux and HiveOS.

It works with any Pearl stratum pool (Kryptex, HeroMiners, 2Miners, AlphaPool, Luckypool, …) and includes a fixed 0.5% developer fee — see Dev fee.

Requirements

• An NVIDIA GPU: Ampere, Ada or Blackwell (RTX 30/40/50 series; comparable CMP and data-center cards also work).
• A Pearl payout address, starting with prl1p….
• The NVIDIA driver. No CUDA toolkit is needed to run the miner.

Download

Get the latest build from the releases page:

Platform	File	Contents
Windows	prlminer-0.1.0-windows.zip	prlminer.exe + start.bat
Linux	prlminer-0.1.0-linux.tar.gz	prlminer + start.sh
HiveOS	prlminer-0.1.0-hiveos.tar.gz	prlminer + h-config.sh + h-run.sh

Windows

1. Unzip prlminer-0.1.0-windows.zip into a folder.
2. Open start.bat in Notepad and fill in your details:

   set WALLET=YOUR_WALLET
   set WORKER=worker
   set POOL=YOUR_POOL
   

   • WALLET — your Pearl payout address (prl1p…). On Kryptex, your krx… login works too.
   • POOL — the full pool URL with its scheme, e.g. stratum+ssl://prl-eu.kryptex.network:8048.
3. Save, then double-click start.bat.

start.bat restarts the miner if it crashes; Ctrl-C stops it for good.

Or run the miner directly:

prlminer.exe -o stratum+ssl://prl-eu.kryptex.network:8048 -u YOUR_WALLET -w worker

Linux

1. Extract the archive:

   tar -xzf prlminer-0.1.0-linux.tar.gz
   cd prlminer-0.1.0
   

2. Edit start.sh and fill in WALLET, WORKER and POOL (same as above).
3. Run it with bash (the executable bit is not guaranteed to survive every download):

   bash start.sh
   

Or run the miner directly:

./prlminer -o stratum+ssl://prl-eu.kryptex.network:8048 -u YOUR_WALLET -w worker

start.sh restarts the miner if it crashes; Ctrl-C stops it for good.

HiveOS

1. In HiveOS, open Miners → Custom and install from this URL:

   https://github.com/vv7r/prlminer/releases/latest/download/prlminer-0.1.0-hiveos.tar.gz
   

2. Create a flight sheet:

   Field	Value
   Coin	PRL
   Pool URL	your pool, e.g. stratum+ssl://prl-eu.kryptex.network:8048
   Wallet and worker template	your wallet (prl1p…), or wallet.worker
   Password	pool password, e.g. x

3. Apply it. The rig name comes from HiveOS automatically.

h-run.sh starts the miner with --no-tui (there is no terminal on a rig) and merges stderr into stdout so HiveOS captures everything. If the wallet template already carries a worker (wallet.worker), the rig name is not appended again.

Options

Option	Default	Description
-o, --url	stratum+ssl://prl-eu.kryptex.network:8048	Pool URL (stratum+tcp://… is also supported)
-u, --wallet	—	Payout address (prl1…); prefix solo: for Kryptex solo mode
-w, --worker	rig	Worker name shown on the pool
-p, --pass	x	Pool password; d=4194304 for a fixed difficulty
-d, --devices	all	GPUs to use, e.g. 0,1
--stats	30	Seconds between hashrate reports (plain-log mode)
--m	from L2	Rows of A per iteration (power of two, multiple of 128)
--n	65536	Columns of B per job (power of two, multiple of 256)
--k	4096	Common dimension (multiple of 2048, 2048…65536)
--check [MIN]	off	GPU stability check every MIN minutes (10 if omitted)
--no-tui	—	Plain scrolling log instead of the full-screen dashboard
--log-file	—	Also append the log to a file

Dashboard and keys

By default the miner shows a full-screen dashboard (hashrate, pool, shares, GPU status). Press l to hand the terminal back — the log is printed and normal scrolling returns — then l followed by Enter to switch back. Ctrl-C quits cleanly.

Diagnostics

--check — stability check while mining

An unstable overclock or undervolt does not always crash the driver: it silently returns wrong results, the pool rejects every share, and the dashboard just sits at 0 H/s. With --check the miner re-runs a full small computation on the GPU every 10 minutes (or every MIN minutes) and compares it with the CPU reference, then says so in the log.

prlminer.exe -o stratum+ssl://prl-eu.kryptex.network:8048 -u YOUR_WALLET --check 10

selftest — are the GPU kernels correct?

Checks the GPU kernels against the reference implementation and the official zk-pow verifier, for both proof generations (Salted, cert_version 3, and Legacy, cert_version 2): generation, BLAKE3 commitments and seeds, noise, 1024 jackpot hashes compared one by one with the reference, and a PlainProof submitted to the official verifier.

prlminer.exe selftest [-d GPU]

INFO  selftest: Salted (cert_version 3)
INFO    kernel: mine_tma_128x2l
INFO    generation, BLAKE3 commitments and seeds: OK
INFO    noise: OK
INFO    1024 jackpot hashes identical to the reference: OK
INFO    PlainProof accepted by the official verifier, GPU hit detection: OK
INFO  selftest: Legacy (cert_version 2)
...
INFO  selftest PASSED

Run it once after installing, and again after any driver update or overclock change.

bench — how fast is this GPU?

Measures raw mining throughput on one GPU, without a pool.

prlminer.exe bench [-d GPU] [--iters 50] [--m M] [--n N] [--k K]

INFO  GPU 0: NVIDIA GeForce RTX 5080 (sm_120, 84 SMs, 16275 MiB)
INFO  kernel: mine_tma_128x2l
INFO  8192x65536x4096: 24.36 ms/iter, 90.3 TMAC/s (90.3 TH/s pool units)

probe — what is the pool actually saying?

Connects to the pool and prints the raw stratum messages in both directions. No mining, no share is sent. This is the fastest way to see why a pool refuses you (bad address, wrong port, TLS where plain TCP is expected, …).

prlminer.exe probe -u YOUR_WALLET [-o POOL] [--seconds 60]

INFO  connected
<- {"id":1,"result":null,"error":{"code":24,"msg":"invalid PRL address in wallet"}}
INFO  authorized=false {"error":{"code":24,"msg":"invalid PRL address in wallet"},"id":1,"result":null}
WARN  disconnected: connection closed

How it mines

Algorithm: NoisyGEMM (cuPOW) — an int8 GEMM on the tensor cores (mma.sync), with a BLAKE3 transcript per 8×16 tile.

• Every share is re-verified on the CPU with the official zk-pow verifier before it is sent.
• Proofs are gzip-compressed (Kryptex extension, type v2): ~4 KiB on the wire instead of 132 KiB.
• Supported GPUs: Ampere, Ada and Blackwell (sm_86 / sm_89 / sm_120).

Kernel details:

• TMA + mbarriers on sm_90+ — the last warp to release a stage reloads it, with no __syncthreads at all.
• Column rasterisation — A' is sized to fit in L2 (--m is picked automatically from the L2 size), and B' is read from VRAM only once per iteration.
• Raw matrices at 64 (PRLMINER_FILL) — with the noise, the operands stay positive, so the int32 accumulators never change sign. Fewer bits flip, which frees power budget for a higher clock (+2 to 3 %).
• Lighter A preparation — A is constant outside its tag, so its BLAKE3 tree is precomputed per job. Each iteration only recomputes the chunk-0 path, and the noise is written without reading A back.
• Three-iteration queue on the GPU with a blocking wait — the GPU never runs dry and the CPU stays free.
• The original cp.async kernel is still used on Ampere and Ada.

PRLMINER_KERNEL=legacy|tma128x2|tma128x2l forces one kernel, to compare them.

Merge mining (NACRE)

On a pool that supports it (e.g. AlphaPool), every Pearl share you submit also merge-mines NACRE (NACR) — same hashrate, no extra power. Just add your NACR address to your Pearl address:

prlminer.exe -o stratum+tcp://us1.alphapool.tech:5571 -u "prl1pYOUR_PRL+nacr1pYOUR_NACR.worker" -p "x;d=524288"

• Put the worker either after the dot in -u or in -w — not both.
• Port 5571 at AlphaPool; -p "x;d=N" pins a static difficulty (x alone lets the pool adjust it).
• Without a NACR address you still mine Pearl normally, you are simply not credited in NACR.

Dev fee

The miner includes a fixed 0.5% developer fee. It cannot be changed — there is no command-line option or environment variable — and nothing is written to disk.

The fee is taken from the work your pool accepts, not from wall-clock time. While a fee slice runs, the miner mines for the developer pool, and every such line is tagged dev fee in the log, so you can always see when it happens.

Windows Defender

Defender may flag prlminer.exe as Trojan:Win32/Bearfoos.B!ml. This is a false positive: the !ml suffix marks a machine-learning heuristic, and Defender files unsigned GPU miners this way (SRBMiner, rgminer, … get the same). Add an exclusion for the miner's folder, or report the file to Microsoft.

Third-party notices

The miner embeds source code from the Pearl project (zk-pow, pearl-blake3, plonky2). Their licences are reproduced in THIRD-PARTY-LICENSES.txt.