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@michal-zurkowski michal-zurkowski released this 10 Oct 12:45
· 51 commits to main since this release
1.2.0
fc9a8da

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

If you want to support us, feel free to donate
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