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OpenCL GPU miner
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Kernels

Available OpenCL kernels

See directory kernel.

Parameter configuration

Common

In general, switching kernels requires reconfiguring mining parameters, such as (but not necessarily limited to) thread-concurrency, intensity, gpu-engine and gpu-memclock.

A description of how to do this is available in doc/MINING.md.

Scrypt kernels

alexkarnew

Alexey Karimov's optimised kernel, based on ckolivas. For Catalyst >=13.4.

Only supports vectors=1.

Announcement.

alexkarold

Alexey Karimov's optimised kernel, based on ckolivas. For Catalyst <13.4.

Only supports vectors=1.

Announcement.

bufius

Bufius' optimised kernel, based on ckolivas. Merged from vertminer.

Only supports vectors=1 and lookup-gap 2, 4 or 8.

ckolivas

The original Colin Percival scrypt kernel, maintained for a long time by Con Kolivas in cgminer and renamed to reflect the fact.

Only supports vectors=1.

psw

Pavel Semjanov optimised kernel, SHA256 speedups.

Announcement.

zuikkis

Zuikkis' optimised kernel, based on ckolivas.

Only supports vectors=1 and lookup-gap=2.

Announcement.

Other kernels

darkcoin

darkcoin-mod

animecoin

fuguecoin

groestlcoin

inkcoin

marucoin

marucoin-mod

myriadcoin-groestl

quarkcoin

qubitcoin

sifcoin

twecoin

maxcoin

Submitting new kernels

Requirements

  • OpenCL source code only, licenced under GPLv3 (or later).
  • Not hard-coded for a specific GPU model or manufacturer.
  • Known limitations and any specific configuration quirks must be mentioned.

Procedure

  • Copy the kernel you wish to modify, make sure the character encoding is UTF-8 and commit it without any further modifications.

This way, it is easy to verify that there are no hidden changes. Note in the commit message which kernel is used as a base.

  • Make changes to the kernel. Commit them.

This allows to produce a diff that makes sense.

  • Recompile and test that the kernel actually works.

  • Add yourself to the "kernels" section in AUTHORS.md. Keep it short.

  • Submit a pull request on GitHub, file it at the issue tracker, or mail it.

Outline the changes made, known limitations, and tested GPUs. List your git repository and branch name. The current repository and issue tracker links should be in README.md.