[LOCKED] cpuminer-opt v3.12.3, open source optimized multi-algo CPU miner

[benjy33]

Thanks for the clarification but Where I can find that cpu information if it is
    Haswell, Broadwell, Skylake
   Sandybridge
    Westbridge (AES + SSE4.1)
      Nehalem  (AES + SSE2)
   Core2 (no AES)............etc

Just tell us you CPU number like... I7-4930 or AMD A6 5400 etc.

AMD FX Series FX-6300 3.5Ghz 6X
and
Intel Core i5-4460 3.2Ghz Box

[1713865705]

1713865705

[1713865705]

1713865705

[1713865705]

1713865705

[joblo]

cpuminer-opt v3.4.11 is available for download.

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

tarball: https://drive.google.com/file/d/0B0lVSGQYLJIZZnh6VUxJb0FuUDA/view?usp=sharing

Windows binaries: https://drive.google.com/file/d/0B0lVSGQYLJIZSUZJY3FaR3BkbFk/view?usp=sharing

With the discovery of how to hash AES optimized groestl with different data lengths I was finally
able to implement it for groestl (+200%) and myr-gr (+100%). All algos that use groestl now use the
faster AES optimized version.

[Nik4691]

Thanks for the clarification but Where I can find that cpu information if it is
    Haswell, Broadwell, Skylake
   Sandybridge
    Westbridge (AES + SSE4.1)
      Nehalem  (AES + SSE2)
   Core2 (no AES)............etc

Just tell us you CPU number like... I7-4930 or AMD A6 5400 etc.

AMD FX Series FX-6300 3.5Ghz 6X
and
Intel Core i5-4460 3.2Ghz Box

AMD FX Series FX-6300 3.5Ghz 6X  use cpuminer-corei7-avx.exe

Intel Core i5-4460 3.2Ghz Box  use  cpuminer-core-avx2.exe

[benjy33]

Thanks for the clarification but Where I can find that cpu information if it is
    Haswell, Broadwell, Skylake
   Sandybridge
    Westbridge (AES + SSE4.1)
      Nehalem  (AES + SSE2)
   Core2 (no AES)............etc

Just tell us you CPU number like... I7-4930 or AMD A6 5400 etc.

AMD FX Series FX-6300 3.5Ghz 6X
and
Intel Core i5-4460 3.2Ghz Box

AMD FX Series FX-6300 3.5Ghz 6X  use cpuminer-corei7-avx.exe

Intel Core i5-4460 3.2Ghz Box  use  cpuminer-core-avx2.exe

ok thanks 

[adamvp]

and for i5 2520M which is apropiate?

[Nik4691]

and for i5 2520M which is apropiate?

cpuminer-corei7-avx.exe

[adamvp]

and for i5 2520M which is apropiate?

cpuminer-corei7-avx.exe

Thanks. I hope it will be any profitable coin someday :d

[ReiMomo]

Why it crashes with HODL? 
I have i74770K (Haswell).

[joblo]

Why it crashes with HODL? 
I have i74770K (Haswell).

Because you're doing something wrong. If you want a better answer, ask a better question.

[denravonska]

Are there any improvements to make by building it with gcc-6 over gcc-4?

[joblo]

Are there any improvements to make by building it with gcc-6 over gcc-4?

Some people have reported problems with newer compilers, one that comes to mind is -flto option seems
to fail to break the compile.

I don't have a GCC 6 build environment yet so I have no comparative performance data. It is my feeling there
would be little miner performance gain from compiler improvements because most miner optimizations use
ASM or intrinsic functions for the time critical code.

Feel free to try and report your results.

[ReiMomo]

Why it crashes with HODL? 
I have i74770K (Haswell).

Because you're doing something wrong. If you want a better answer, ask a better question.

Back, sorry if I did not left enough info.
I'm just doing the same that works for cpuminer-opt-3-3-8-windows version, that version is around half slower than cpuminer-opt-3.4.11-windows.
I'm trying to mine here https://erc.suprnova.cc/index.php?page=dashboard
However works as benchmark mode.

My bat line is cpuminer-core-avx2 -a hodl -o stratum+tcp://erc.suprnova.cc:7674 -u Username.Worker -p x -t 7 -D
pause

Here is a video
http://tinypic.com/player.php?v=1znv5hs%3E&s=9#.WC5TAWfrtkg

[joblo]

Why it crashes with HODL?  
I have i74770K (Haswell).

Because you're doing something wrong. If you want a better answer, ask a better question.

Back, sorry if I did not left enough info.
I'm just doing the same that works for cpuminer-opt-3-3-8-windows version, that version is around half slower than cpuminer-opt-3.4.11-windows.
I'm trying to mine here https://erc.suprnova.cc/index.php?page=dashboard
However works as benchmark mode.

My bat line is cpuminer-core-avx2 -a hodl -o stratum+tcp://erc.suprnova.cc:7674 -u Username.Worker -p x -t 7 -D
pause

Here is a video
http://tinypic.com/player.php?v=1znv5hs%3E&s=9#.WC5TAWfrtkg

That's strange. Hodl was recently optimized with AVX2 but a 4770K supports it so it should work. I tested at Suprnova with a
4790K and it works fine with the AVX2 build.

It looks like an issue with your CPU. Did you try any of the other builds? That will tell you if your CPU has AVX2 working.
You could also test with another algo that uses AVX2 such as X11 or Lyra2REv2.

I don't like unknown media sites so I didn't look at your video. It's better to just copy/paste or screenshot the text from the
command window.

[felixbrucker]

i have taken a screen of the interesting part:

[malafaya]

i have taken a screen of the interesting part:

There's likely an unallocated stratum session id variable with value "deadbeef......"

[joblo]

i have taken a screen of the interesting part:

There's likely an unallocated stratum session id variable with value "deadbeef......"

Like I said in my previous reply, very strange. Hex code that form highly visible words are often used to help debugging
by making invalid data stick out in a hex dump.

Those hex tags are very useful. The specific deafbeef tag was used in a product I supported and got us into
trouble when we tried to sell to India.

I this case deadbeef is used to initialize a local variable in uint256 code only used by the non-optimized hodl code.
In other words this code does not get run on a 4770K.

The invalid session id also contains two other hex tags: cafe & babe, that are only used in hamsi code which isn't used
by hodl.

It is also interesting that a valid share was hashed with the apparently invalid session id.

These three observations are not related to each other and don't appear to be related to the crash which tells me process
was corrupt. Either the program file is corrupt or the CPU is corrupting data. Since your system is running I assume the
CPU is ok.

Try downloading a fresh copy. I've had no other complaints about the download so it should be ok.

[oldDIN]

Zcoin-xzc Algo was modified after block 8192 - lyra2z

[joblo]

Zcoin-xzc Algo was modified after block 8192 - lyra2z

It's not worth making the change, it will change again soon to something completely different.
For those who compile their own it's a one line change in algo/lyra2/zcoin.c line 11:

Code:

old:        LYRA2Z(hash, 32, input, 80, input, 80, 2, height, 256);
new:        LYRA2Z(hash, 32, input, 80, input, 80, 2, 8192, 256);

[maxfunky]

I don't see the change for MTP happening soon..

Dev of MTP is slightly delayed for a few days as Poramin is handling a personal emergency. We will keep you guys posted. Thank you for your patience and do send good thoughts and prayers Poramin's way

Can you update github please ?

[ZenFr]

Zcoin-xzc Algo was modified after block 8192 - lyra2z

It's not worth making the change, it will change again soon to something completely different.
For those who compile their own it's a one line change in algo/lyra2/zcoin.c line 11:

Code:

old:        LYRA2Z(hash, 32, input, 80, input, 80, 2, height, 256);
new:        LYRA2Z(hash, 32, input, 80, input, 80, 2, 8192, 256);

Ok, works fine : thank you :-).
Any future optimisation for ZCoin ?