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Author Topic: [ANN] cpuminer-opt v3.11.4, open source optimized multi-algo CPU miner  (Read 440975 times)
alucard20724
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December 23, 2019, 06:33:17 AM
 #3941


Here are my results so far with a 7820X... i've only benched for the pools shown.


Thanks for posting. It would be nice to compare with AVX2.


which version of AVX2 would you like to see?.. i think i have twenty of your previous versions benched up to version 3.10.2 for avx2 on this cpu
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December 23, 2019, 06:41:28 AM
 #3942

which version of AVX2 would you like to see?.. i think i have twenty of your previous versions benched up to version 3.10.2 for avx2 on this cpu

Just use the latest release compiled for avx2. That will provide the most direct comparison. If you have Windows
it's already compiled for you. With Linux just compile with "-march=skylake" instead of "-march=native".

You can confirm that the SW features only list AVX2 but the CPU still lists AVX512.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
joblo
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December 23, 2019, 05:27:43 PM
 #3943

Scam warning

A user is posting fake links to cpuminer-opt. Don't download.

The only real cpuminer-opt is here and only here:

https://github.com/JayDDee/cpuminer-opt

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
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December 24, 2019, 01:12:37 AM
 #3944

Scam warning

A user is posting fake links to cpuminer-opt. Don't download.

The only real cpuminer-opt is here and only here:

https://github.com/JayDDee/cpuminer-opt

Thanks for the head up, I am sure the link they are posting has a download filled with all kinds of holiday goodies intended to make his/her holidays more festive. Its a good reminder to always double check things before you click them, because even the best of us get caught slipping sometimes.

 
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joblo
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December 24, 2019, 04:10:30 AM
 #3945

Scam warning

A user is posting fake links to cpuminer-opt. Don't download.

The only real cpuminer-opt is here and only here:

https://github.com/JayDDee/cpuminer-opt

Thanks for the head up, I am sure the link they are posting has a download filled with all kinds of holiday goodies intended to make his/her holidays more festive. Its a good reminder to always double check things before you click them, because even the best of us get caught slipping sometimes.

The POS tried to copy my ANN but couldn't even do that right, A real winner.

I reported it to Mod and it seems to have been deleted.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
alucard20724
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December 24, 2019, 07:44:38 PM
 #3946

which version of AVX2 would you like to see?.. i think i have twenty of your previous versions benched up to version 3.10.2 for avx2 on this cpu

Just use the latest release compiled for avx2. That will provide the most direct comparison. If you have Windows
it's already compiled for you. With Linux just compile with "-march=skylake" instead of "-march=native".

You can confirm that the SW features only list AVX2 but the CPU still lists AVX512.

@joblo
Here's my results for AVX512 vs AVX2 on version 3.10.5    i'm running windows pro 10 x64  8gigs ram

joblo
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December 28, 2019, 09:13:51 PM
 #3947

@joblo
Here's my results for AVX512 vs AVX2 on version 3.10.5    i'm running windows pro 10 x64  8gigs ram

Thanks, Those results are in line with mine. The 100% AVX512 algos are pretty close to double the
hash rate so that indicates no significant scaling issues with AVX 512 unless memory accesses are
bottlenecked.

The long X chains are showing the effects of diminishing returns. Further optimization of previously
optimized code has less effect as it represents a diminishing proportion of the complete algo.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
joblo
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January 03, 2020, 05:21:28 AM
 #3948

cpuminer-opt-3.11.0 introduces full support for Intel's Icelake CPUs.

Iclelake architecture includes AVX512, SHA, and VAES. AVX512 and SHA are already supported on
Intel Skylake-X and AMD Ryzen, respectively. VAES is new with Icelake and is an extension of
AES_NI and AVX512 that provides 4 way parallel AES encryption and decryption in a 512 bit vector.

Icelake is only available for mobile at this time, desktop availability is unknown.

VAES support is only available as source code and requires GCC 8.

See the OP for more details about v3.11.0

This release marks the end of the rapid development of the past several weeks. Things
will slow down considerably with mostly bug fixes and minor tweaks.

I am also planning a cleanup to remove some troublesome and useless code, namely the macros
for blake, bmw, etc used by algos like x11, as well as scrypt-jane algo. The macros don't provide
any noticeable performance difference from the refernce code and srypt-jane hasn't been used
for several years. There are other dead algos but they don't cause problems so there is no need to
remove them. This will also reduce the bloat. If anyone has concerns wwith this plan, please speak up.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
alucard20724
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January 03, 2020, 08:03:18 AM
 #3949

cpuminer-opt-3.11.0 introduces full support for Intel's Icelake CPUs.

Iclelake architecture includes AVX512, SHA, and VAES. AVX512 and SHA are already supported on
Intel Skylake-X and AMD Ryzen, respectively. VAES is new with Icelake and is an extension of
AES_NI and AVX512 that provides 4 way parallel AES encryption and decryption in a 512 bit vector.

Icelake is only available for mobile at this time, desktop availability is unknown.

VAES support is only available as source code and requires GCC 8.

See the OP for more details about v3.11.0

This release marks the end of the rapid development of the past several weeks. Things
will slow down considerably with mostly bug fixes and minor tweaks.

I am also planning a cleanup to remove some troublesome and useless code, namely the macros
for blake, bmw, etc used by algos like x11, as well as scrypt-jane algo. The macros don't provide
any noticeable performance difference from the refernce code and srypt-jane hasn't been used
for several years. There are other dead algos but they don't cause problems so there is no need to
remove them. This will also reduce the bloat. If anyone has concerns wwith this plan, please speak up.

is m7m supported with AVX512 now?
i didn't see it and i haven't noticed any speed increase based on the prior versions.... haven't tested v3.11.0 yet ... working on it.
joblo
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January 03, 2020, 01:57:38 PM
 #3950

is m7m supported with AVX512 now?
i didn't see it and i haven't noticed any speed increase based on the prior versions.... haven't tested v3.11.0 yet ... working on it.

Unfortunately AVX512 only improves algos that have already been taken over by GPUS and ASICS
and they are improvimng faster than CPUs can. That's because GPUs are real vector processors
while CPU SIMD just emulates vector processing with strict restrictions on data organization.
A GPU can run thousands of threads while the biggests CPUs with AVX512 can barely crack 100.

The secret is in the algorithm, those can can be vectorized can be vectoized better on a GPU.
The only way to speed up M7M is more CPU cores and faster clocks.

VAES has some potential as a few CPU algos use can use it. But VAES will only help with linear
vectorizing (loop unrolling) rather than enabling parallel operation.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
joblo
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January 03, 2020, 07:39:40 PM
 #3951

Yet another asshole is posing as me and posting malware as cpuminer-opt. As always be careful.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
joblo
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January 06, 2020, 07:15:17 PM
 #3952

cpuminer-opt-3.11.1 is released.

https://github.com/JayDDee/cpuminer-opt/releases/tag/v3.11.1

Faster panama for x25x AVX2 & AVX512.

Fixed echo VAES for Xevan.

Removed support for scryptjane algo.

Reverted macro implemtations of hash functions to SPH reference code
for SSE2 versions of algos.

Use older release for scryptjane of SSE2 mcro support.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
BTC: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT,
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