1.1.5.1

Hotfix

• Fix memory leak on Windows.
• Fix problems for users mining BUTK.

Linux and RTM miners do not have to switch.

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1.1.5

Changes

• Fixed rare problems with stratum switching that resulted in "low difficulty" shares.
• Minimal tuning for Cryptonight. 1-2% improvement.
• Fixed Windows binaries for 5000 series AMD CPUs. --tune and --tune-config now work as they should
• --benchmark - Proper memory flushing. Should give more accurate results. The current benchmark will report lower values compared to previous versions.

Windows 5950X 
Default:     3624.39 H/s
tune_config: 4934.02 H/s

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1.1.4

Changes

• Fix stratum changes. In specific scenarios, it could produce many errors.
• Bring back some of the lost performance to Ryzens using 1way Cryptonight.
• Reworked some benchmarking functionality to be more representative of real-world hashing. Results are not comparable to previous versions.
• Temporarily restricted tuning of Fast variant of Cryptonight due to reports stating lowered hashrate after tuning on Ryzen 5000 series.

Ryzen 5000 series

Please use your --cn-config from the previous versions instead of using --tune functionality.

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1.1.3

Changes

• Dev pool is now selected from the list.
• Show new statistic info about hashrate after each new block.
• Another attempt to fix stratum issues from some users.
• Include prefetch for loading / storing data for Cryptonight (~1-2% improvement)
• Rewrite 2way Cryptonight. (~15-50% improvement)
• Include 2 new options for AVX2+:
  -- --tune - Optimal tuning for 2way or 1way solving of Cryptonight. Takes ~34 minutes. Creates tune_config file that can be used later. It is recommended to run it with --benchmark to disable any stratum and network communication. Can be used directly with your normal mining options and will start mining after the tuning process. After doing it once, use --tune-config after that.
  -- --tune-config=FILE - Use tuning config generated by --tune while mining.

The expected improvement compared to 1.1.2 -> 10-30%

Tuning process:
Step 1: ./cpuminer-INST -a gr --benchmark --tune
Step 2: ./cpuminer-INST -a gr YOUR_POOL_AND_WALLET --tune-config tune_config

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Benchmarks

# Note: 1.1.2 have 1-2% inflated hashrates compared to 1.1.3

2xE5-2698v3 Ubuntu 20.04
         1.1.2      1.1.3       Increase                        
Light    2970.36    2986.81    +0.6%        
Heavy    2248.29    2671.98    +18.9%
Tuned    N/A        3373.91    +13.6% (compared to the fastest 1.1.2 config)

i7-9700 (non-K) Ubuntu 18.04
         1.1.2      1.1.3       Increase                        
Light    932.89     930.12     -0.3%        
Heavy    715.23     915.77     +28.0%
Tuned    N/A        1039.65    +11.4% (compared to the fastest 1.1.2 config)    

i9-9900K @4,8 Ubuntu 20.04
         1.1.2      1.1.3       Increase                        
Light    1443.14    1461.71    +1.3%        
Heavy    1136.70    1370.23    +20.5%
Tuned    N/A        1742.31    +20.7% (compared to the fastest 1.1.2 config)   

R7 3700 Pro Ubuntu 20.04
         1.1.2      1.1.3       Increase    
Light    2117.72    1954.83    -7.6%
Heavy    1540.88    2279.75    +47.9%
Config   2196.39    2400.45    +9.3%  (--cn-config 0,0,0,1,1,0)
Tuned    N/A        2689.02    +22.4% (compared to the fastest 1.1.2 config)

1.1.2

Changes

• Added automatic Large Pages to the Windows environment. Requires administrator privileges for the one-time setup.
• Added MSR functionality to the Windows environment. Releases will include WinRing0x64.sys, licensed and signed Ring0 Driver to enable this functionality.
• Added ability to manually set how Cryptonight algorithms should be solved, SSE or AVX2. --cn-config. Changes algorithm to variants in this order: Turtlelite, Turtle, Darklite, Dark, Lite, Fast
  presets:
  light - equivalent to 0,0,0,0,0,0 (default)
  medium - equivalent to 0,1,1,1,0,0
  heavy - equivalent to 1,1,1,1,1,1
  list of 6 coma ',' separated values:
  0 - Use SSE2 implementation. 1 - Use AVX2
  --cn-config=medium
--cn-config=1,0,0,1,0,0
• Added a long benchmark of each --cn-config configuration. --benchmark-config It takes around 20 minutes to complete fully.

Last release with separate binaries for Heavy, Medium, and Light variants as it is now possible to select it via CLI.

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1.1.1

Changes

• Fixed stratum connection errors.
• Minor improvements to the SSE CN algorithm. Can affect Light/Medium variants.

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Cpuminer-opt-gr 1.1.0b

Changes

• General - Use the latest cpuminer-opt branch.
• MSR ~2-5% increased performance. Enabled by default. Use -y to disable it.
  -- Linux -- Seamless. Requires root privileges.
• Large Pages ~15-20+% increased performance.
  -- Linux -- Seamless. Requires root privileges.
  -- Windows -- Prior one-time configuration required. Follow this 15s tutorial: https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/enable-the-lock-pages-in-memory-option-windows
  A system restart is required after successful configuration.
• SSE2 - ~2-3% increase in performance compared to the official miner.
• AVX - ~10-15% increase in performance.
• AVX2 - ~15-25% increase in performance. Multiple binaries. Performance Light -> Heavy depending on the available L3 cache on the CPU. Big CPUs like Zen3, Threadrippers, and Xeons are most likely to benefit from Heavier implementation.
  -- Heavey - All 2way
  -- Medium - Mixed SSE & 2way
  -- Light - SSE
• Benchmark functionality -- 30s+ benchmark that should give the real average performance of the GR algorithm. Especially useful to test which binaries might be better for your CPU.
• Adjustable Dev Fee -- -d X to set donation percentage. Defaults to 1. Can be disabled in the source code.

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AES, AVX2 and Xeon Phi

There are 3 static binaries in this release.

CPUMiner-GR-AES <- Is an AES and SSE2 optimized version of cpuminer-gr
CPUMiner-GR-AVX2 <- Is an AES, SSE2 and AVX2 optimized version of cpuminer-gr with 4-WAY support for improved mining speed
CPUMiner-GR-KNL <- Is an optimized version of CPUMiner-GR-AVX2 for the Xeon Phi X200 PCI-e CoProcessors

Why did I make these?

• Improved hash rate ~2.2X average improvement
• More consistent hash rate (less variation in hash rate)
• Xeon Phi Support (I'm a HPC nerd, so seeing 4KHs+ On a Xeon Phi is awesome. The unoptimized version topped out at 800Hs)

There is a 1% donation fee built in. (1 min every 100 min)

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Windows Binaries are compiled by Delgon. Please support them by donating to RTM: RQKcAZBtsSacMUiGNnbk3h3KJAN94tstvt
This is a fork of cpuminer-opt, so check out their work and support them too! (https://github.com/JayDDee/cpuminer-opt/)

Contact me on Discord https://discord.gg/5UPBUvj6sa