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Author Topic: [ANN]: cpuminer-opt v3.8.8.1, open source optimized multi-algo CPU miner  (Read 415986 times)
th3.r00t
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April 18, 2016, 09:45:02 PM
 #481

Please try with
Code:
./configure CFLAGS="-O3 -march=btver1" --with-curl --with-crypto

Build successful on both AMD CPU's without -DNO_AES_NI

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joblo
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April 18, 2016, 09:46:06 PM
 #482

Please try with
Code:
./configure CFLAGS="-O3 -march=btver1" --with-curl --with-crypto

Build successful on both AMD CPU's without -DNO_AES_NI

Excelllent, thanks.

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April 19, 2016, 08:33:21 PM
 #483

Please try with
Code:
./configure CFLAGS="-O3 -march=btver1" --with-curl --with-crypto

Build successful on both AMD CPU's without -DNO_AES_NI

So, what was the setup that was giving the errors? If it works with and without NO_AES_NI?

What was the version of gcc?
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April 20, 2016, 02:09:05 AM
 #484

Please try with
Code:
./configure CFLAGS="-O3 -march=btver1" --with-curl --with-crypto

Build successful on both AMD CPU's without -DNO_AES_NI

So, what was the setup that was giving the errors? If it works with and without NO_AES_NI?

What was the version of gcc?

I don't understand your question.

If you mean my request above to test it was just to confirm it works on real non-aes HW, which I don't have.

If you are referring to the compile problems in 3.1.14 it was because of a misunderstanding on the maning of __AES__.

If you're referring to you problems with -march=native I have no idea.

gcc v4.8.4

Did any of these answer your question?

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th3.r00t
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April 20, 2016, 08:26:09 AM
 #485

Please try with
Code:
./configure CFLAGS="-O3 -march=btver1" --with-curl --with-crypto

Build successful on both AMD CPU's without -DNO_AES_NI

So, what was the setup that was giving the errors? If it works with and without NO_AES_NI?

What was the version of gcc?
Default Ubuntu Server GCC
3.19.0-58-generic kernel
AMD Phenom II X4 940 @ 3.6GHz with 4GB RAM

Code:
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.4-2ubuntu1~14.04.1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.1)

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April 20, 2016, 06:08:20 PM
 #486

Code:
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.4-2ubuntu1~14.04.1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.1)

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Below are examples of how output should look like.

Output on my core2:
Code:
hmage@wraith:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               core2

On haswell:
Code:
hmage@dhmd:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               haswell

On ivybridge:
Code:
hmage@education:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               ivybridge

List of supported architectures on GCC 4.8.4 is here -- https://gcc.gnu.org/onlinedocs/gcc-4.8.4/gcc/i386-and-x86-64-Options.html
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April 20, 2016, 07:17:53 PM
 #487

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Here you are:
Code:
root@beast:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

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April 20, 2016, 07:22:27 PM
 #488

windows support?
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April 20, 2016, 07:30:05 PM
 #489

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Here you are:
Code:
root@beast:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

This curious. I presume that shows which arch is used by native.

On my skylake I get core2-avx and on my haswell I get corei7-avx.
configure fails with -march=skylake on my skylake.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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April 20, 2016, 07:30:30 PM
 #490

windows support?

No time soon.

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th3.r00t
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April 20, 2016, 07:38:19 PM
 #491

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Here you are:
Code:
root@beast:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

This curious. I presume that shows which arch is used by native.

On my skylake I get core2-avx and on my haswell I get corei7-avx.
configure fails with -march=skylake on my skylake.
Yeah! This got me curious and do some tests too.  Cool

Intel Core i7-4790K CPU @ 4.40GHz
Code:
root@storm:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               core-avx2

AMD Sempron 145
Code:
root@wolverine:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

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April 20, 2016, 07:55:38 PM
 #492

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Here you are:
Code:
root@beast:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

This curious. I presume that shows which arch is used by native.

On my skylake I get core2-avx and on my haswell sandy bridge I get corei7-avx.
configure fails with -march=skylake on my skylake.
Yeah! This got me curious and do some tests too.  Cool

Intel Core i7-4790K CPU @ 4.40GHz
Code:
root@storm:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               core-avx2

AMD Sempron 145
Code:
root@wolverine:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

Correction, my sandy bridge shows corei7-avx.

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April 20, 2016, 08:27:53 PM
 #493

cpuminer-opt v3.1.16 adds m7m algo.

https://drive.google.com/file/d/0B0lVSGQYLJIZSHJ3dGMxZUJfeTQ/view?usp=sharing

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hmage
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April 21, 2016, 01:50:44 PM
 #494

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Here you are:
Code:
root@beast:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

Then your build should have worked out of the box, with -march=native. amdfam10 doesn't have AES support and gcc won't define __AES__ macro. Can you try building it with -march=native again?

This curious. I presume that shows which arch is used by native.

On my skylake I get core2-avx and on my haswell I get corei7-avx.
configure fails with -march=skylake on my skylake.

Yes, this shows which arch gcc use for -march=native.

In your case skylake is too new for gcc, your gcc 4.8.4 doesn't know about it, it should choose the closest match with most features enabled. There's no 'core2-avx' in GCC 4.8.4 manual, maybe you meant 'core-avx2'? core-avx2 defines __AES__ automatically.

https://gcc.gnu.org/onlinedocs/gcc-4.8.4/gcc/i386-and-x86-64-Options.html
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April 21, 2016, 03:24:24 PM
 #495

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Here you are:
Code:
root@beast:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

Then your build should have worked out of the box, with -march=native. amdfam10 doesn't have AES support and gcc won't define __AES__ macro. Can you try building it with -march=native again?

This curious. I presume that shows which arch is used by native.

On my skylake I get core2-avx core-avx2 and on my haswell sandy bridge I get corei7-avx.
configure fails with -march=skylake on my skylake.

Yes, this shows which arch gcc use for -march=native.

In your case skylake is too new for gcc, your gcc 4.8.4 doesn't know about it, it should choose the closest match with most features enabled. There's no 'core2-avx' in GCC 4.8.4 manual, maybe you meant 'core-avx2'? core-avx2 defines __AES__ automatically.

https://gcc.gnu.org/onlinedocs/gcc-4.8.4/gcc/i386-and-x86-64-Options.html

Hmage, you're a good teacher and you know your stuff, I'm learning a lot. Core-avx2 correction noted.

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April 21, 2016, 06:48:56 PM
 #496

May I propose a different approach for much faster mining?

Currently, most, if not all of CPU-mineable coins, are cripple-mined.

The reason is simple: Under-utilizing of the SIMD nature of SSE & AVX sets.

SSE and AVX commands are used in SISD fashion (single instruction single data, instead of Multiple data / SIMD), meaning they are not processing 2 batches of information but one.

Right now hashing goes on like that:

The main mining routine sends one output to each hash, where it will be subject to a process of SERIAL transmutations / permutation and in the end the hash will output that data back to the miner (some times to send it to the next hash).

This serial process doesn't allow for much Single Instruction Multiple Data utilization.

What should be done instead is that the miner program should issue 2-4 hash candidates to the hashing routines. The hashing routines should be able to get 2-4 inputs (instead of 1) and return back 2-4 outputs. In this way the process would be paralleled and SIMD utilization (packed processing of similar instructions) would result in much faster processing.

Now this might require a lot of recoding, or, one could adjust the code in C for use with a special compiler which runs multiple instances of serial data crunching in order to process them in "packs" with SIMD or "packed" instructions - and then let the compiler do all the packing. Performance benefits of such an approach here: http://ispc.github.io/perf.html
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April 21, 2016, 07:23:33 PM
 #497

May I propose a different approach for much faster mining?

Currently, most, if not all of CPU-mineable coins, are cripple-mined.

The reason is simple: Under-utilizing of the SIMD nature of SSE & AVX sets.

SSE and AVX commands are used in SISD fashion (single instruction single data, instead of Multiple data / SIMD), meaning they are not processing 2 batches of information but one.

Right now hashing goes on like that:

The main mining routine sends one output to each hash, where it will be subject to a process of SERIAL transmutations / permutation and in the end the hash will output that data back to the miner (some times to send it to the next hash).

This serial process doesn't allow for much Single Instruction Multiple Data utilization.

What should be done instead is that the miner program should issue 2-4 hash candidates to the hashing routines. The hashing routines should be able to get 2-4 inputs (instead of 1) and return back 2-4 outputs. In this way the process would be paralleled and SIMD utilization (packed processing of similar instructions) would result in much faster processing.

Now this might require a lot of recoding, or, one could adjust the code in C for use with a special compiler which runs multiple instances of serial data crunching in order to process them in "packs" with SIMD or "packed" instructions - and then let the compiler do all the packing. Performance benefits of such an approach here: http://ispc.github.io/perf.html

That's a fascinating idea but I don't think it will get the visibility here that it deserves. Pooler and TPruvot are the two main guys for
CPU mining although TPruvot is focussed more on other projects at the moment. Both have active threads in this forum. I suggest you
present your idea to them in case they, or their folllowers, may want to take on the challenge. It's beyond my skill level.


cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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th3.r00t
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April 21, 2016, 07:32:34 PM
 #498

Can you run this command on your AMD processors and show me the output?
Code:
gcc -march=native -Q --help=target | fgrep march

Here you are:
Code:
root@beast:~$ gcc -march=native -Q --help=target | fgrep march
  -march=                               amdfam10

Then your build should have worked out of the box, with -march=native. amdfam10 doesn't have AES support and gcc won't define __AES__ macro. Can you try building it with -march=native again?

This curious. I presume that shows which arch is used by native.

On my skylake I get core2-avx and on my haswell I get corei7-avx.
configure fails with -march=skylake on my skylake.

Yes, this shows which arch gcc use for -march=native.

In your case skylake is too new for gcc, your gcc 4.8.4 doesn't know about it, it should choose the closest match with most features enabled. There's no 'core2-avx' in GCC 4.8.4 manual, maybe you meant 'core-avx2'? core-avx2 defines __AES__ automatically.

https://gcc.gnu.org/onlinedocs/gcc-4.8.4/gcc/i386-and-x86-64-Options.html

Nope...
Still ./build.sh fails on AMD
Maybe I am to try something else?

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April 21, 2016, 07:37:59 PM
 #499

It's not a new idea. It was used back in the GPU bitcoin mining days to get better speed on amd VLIW cards.
It's easy to adapt the miner itself to process multiple nonces per thread, not sure about how much work is needed to work on the algos themselves. Maybe we could make a test with a simple algo like blake. But I'm not the man because I'm not proficient in those cpu instruction extensions.

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April 21, 2016, 07:40:08 PM
 #500

Code:
        **********  cpuminer-opt 3.1.16  ***********
     A CPU miner with multi algo support and optimized for CPUs
     with AES_NI extension.
     BTC donation address: 12tdvfF7KmAsihBXQXynT6E6th2c2pByTT
     Forked from TPruvot's cpuminer-multi with credits
     to Lucas Jones, elmad, palmd, djm34, pooler, ig0tik3d,
     Wolf0 and Jeff Garzik.

Checking CPU capatibility...
        AMD Phenom(tm) II X4 940 Processor
   CPU arch supports AES_NI...NO.
   CPU arch supports SSE2.....YES.
   SW built for SSE2..........NO.
Incompatible SW build, rebuild with "-march=native"

Why?

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