WyvernTKC/cpuminer-gr-avx2 1.2.0

on GitHub

Retuning of the miner is required as 1.1.9 tune configs are not compatible!

Miner fee reduced by 0.25% while mining on Flockpool.com

Windows Fixes:

• Fix MSR setup.
• Properly close/stop WinRing0 driver after closing the miner.
• Fix problems with stratum switching while using SSL stratum.
• Compiled binaries should now properly handle multi NUMA configurations.
• Disable QuickEdit on Windows. Prevents the user from accidentally freezing the miner.

General Fixes:

• Fix inaccurate Average hashrate counter that was displayed above each "Periodic Report".
• Fix the problem of "Low difficulty share" in situations where the new block
  is found almost instantly.
• Add Large Pages to different NUMA nodes if some have 0 or not enough memory (Linux).
• Minor fixes.

General Changes:

• Linux binaries system main requirements: libssl-1.1, libcurl-4, glibc-2.16.
• Added autodetect script to the linux and Windows binary packages.
  They should start the best possible binary for the CPU used by the user.
• Added default config.json file that is used to provide flags in one simple place.
• Benchmark provides even more accurate results and takes into consideration
  sub rotations.
• Doing benchmark of the miner now creates benchmark.log file with results.
• Automatically add lost shares to a new entry in "Periodic Report"
  instead of displaying a warning about share mismatch.
• Remove some unused debug output.
• Show progress of the tuning process in percent as well as
  tests_done / tests_total and estimate of time remaining.
• Pass benchmark and tuning speed to the API.
• Provide info about the rotation of the current block and a rough speed estimate.

Algorithm Improvements:

• General optimizations for GhostRider (~0-2% increase).
• New tuning process (up to 15% increase, most noticeable on Intel and Zen/Zen+ CPUs):
  -- Dynamic thread usage - Especially useful for cache starved CPUs like Intels
  and mobile CPUs. Lifts the performance on the more cache-heavy rotations by
  not using some threads while maintaining the best performance on rotations
  not requiring that much cache.
  -- Different prefetch methods - This can bring more performance on CPUs with
  higher overclocks and 2 sticks of RAM while maintaining proper performance
  on CPUs that are underclocked and have 1 stick of RAM.
  -- Tune for 2 sub rotations in each rotation to maximize the performance.
• Update algorithms with improvements from JDD cpuminer-opt 3.18.0

Flags:

• Add --url-backup=URL:PORT - enable backup/failover stratum for the user.
• Add --log=FILE - simple log file of the miner output. Useful on Windows.
• Remove --tune-simple.
• Add missing --no-msr (-y) long flag.
• All flags (like -y --tune-full) are available on all releases but won't
  do anything if they are not compatible. Should provide better universal
  usage and script creation.

Compilation:

• Fix compilation errors on systems with archaic kernels (CentOS 7, Old Fedora & Ubuntu).
• Requires c++20 capable compiler. gcc-10 is recommended. gcc-8 minimum.
• Compilation tested on:
  -- CentOS 7, CentOS 8.4
  -- Fedora 24, Fedora 28, Fedora 34
  -- Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04
• Binaries tested on:
  -- CentOS 7 - Requires manual installation of libssl-1.1
  -- CentOS 8.4 - OK
  -- Fedora 24 - Requires manual installation of libssl-1.1
  -- Fedora 28, 34 - OK
  -- Ubuntu 16.04 - Requires manual installation of libssl-1.1
  -- Ubuntu 18.04, 20.04 - OK

HiveOS:

• Fix for AVX cpus on 1.1.9 and possibly 1.2.0:
  cp /hive/miners/cpuminer-opt/gr/1.1.9/cpuminer-avx /hive/miners/cpuminer-opt/gr/1.1.9/cpuminer-aes-avx
  or
  cp /hive/miners/cpuminer-opt/gr/1.2.0/cpuminer-avx /hive/miners/cpuminer-opt/gr/1.2.0/cpuminer-aes-avx
• It is recommended to replace HiveOS binaries with prepared binaries for Ryzen users for best performance.

1. Pick proper zen/zen2/zen3 variant from prepared binaries and replace avx2-sha binary in HiveOS.
2. Disable LIBCURL3_COMP:
   sed -i 's/LIBCURL3_COMPAT=1/LIBCURL3_COMPAT=0/g' /hive/miners/cpuminer-opt/h-manifest.conf

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