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Author Topic: [ANN]: cpuminer-opt v3.8.8.1, open source optimized multi-algo CPU miner  (Read 419413 times)
joblo
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March 09, 2018, 02:01:45 AM
 #3521

Hi.

Got the same problem as "Dead Things", but on an 2x Intel Xeon E5645 using Ubuntu 16.04 LTS
On systems with AVX I am using the precompiled linux version, but it is not possible to use this one on systems without AVX.

Tried to compile, and ran into the same problems.

Quote
/usr/bin/ld: cannot find -lpthreadGC2
What precompiled Linux version? It didn't come from me.

I built a Mint 17 (Ubuntu 16.04) system a week ago and have no problems compiling. I have no idea what's going wrong
for you and Dead Things. It should only try to link pthreadGC2 when compiling using mingw for Windows.
That's how I build the Windows binaries but when doing a normal build it links pthread as it should. The CPU shouldn't have
any effect on this, it's the build environment. Something is making it believe it's compiling for Windows.
Here is the code in configure.ac that controls it, it seems pretty clear:

Code:
if test "x$OS" = "xWindows_NT" ; then
   # MinGW
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
else
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthread",[])
fi

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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Cebula
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March 09, 2018, 05:06:57 PM
 #3522

I hope I'm not repeating, but I'm not sure which miner to run. My CPU supports these instruction sets:

MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, x86-64, AMD-V, AES, AVX, AVX2, FMA3, SHA

Running on a Threadripper 1900X
scryptr
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March 09, 2018, 05:34:04 PM
 #3523

I hope I'm not repeating, but I'm not sure which miner to run. My CPU supports these instruction sets:

MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, x86-64, AMD-V, AES, AVX, AVX2, FMA3, SHA

Running on a Threadripper 1900X

THAT IS A GOOD QUESTION--

After several pages of interesting bug catches, update notes, code reports, and technical data, I have lost track.  Most of my CPUs are slightly dated, and are still running v3.7.2.  Perhaps I should update and re-standardize on a newer version.       --scryptr

TIPS:  BTC - 1Fs4uZ6a9ABYBTaHGUfqcwCQmeBRxkKRQT    DASH - XrK81tW31SLsVvZ2WX9VhTjpT6GXJPLdbQ
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sleepdog
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March 09, 2018, 06:28:02 PM
 #3524

Try them and see? Anything unsopported won't run and you could do a quick benchmark on the the rest.
joblo
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March 09, 2018, 06:41:20 PM
 #3525

Try them and see? Anything unsopported won't run and you could do a quick benchmark on the the rest.

That's always a good fallback if you're completely lost. If README.txt isn't clear enough let me know.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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Cebula
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March 09, 2018, 08:59:43 PM
 #3526

Try them and see? Anything unsupported won't run and you could do a quick benchmark on the rest.

I tried each of the programs and none crashed - which is good. Next question is how to do a benchmark.
drozenski
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March 10, 2018, 11:20:38 AM
 #3527

does this support the primcoin/datacoin algo?

I cant seem to find it.
UspesenRudar
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March 10, 2018, 01:30:09 PM
 #3528

Try them and see? Anything unsupported won't run and you could do a quick benchmark on the rest.

I tried each of the programs and none crashed - which is good. Next question is how to do a benchmark.

--benchmark parameter
.exe --benchmark -a cryptonight
Gehacktesmacher
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March 11, 2018, 10:51:34 PM
 #3529

Quote
if test "x$OS" = "xWindows_NT" ; then
   # MinGW
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
else
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthread",[])
fi


Hi joblo,
thx for this. It seems there is a bug in the Code Smiley

Freshly downloaded the sources on another machine and gone through configure.ac
My version shows as follows, which explains the problem we got. (I manually edited and corrected it, and it works fine now)
Another thing is that I have to install libgmpv4-dev to meet another requirement, but after that cpuminer binary got compiled fine Cheesy

if test "x$OS" = "xWindows_NT" ; then
   # MinGW
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
else
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
fi

joblo
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March 12, 2018, 12:24:57 AM
 #3530

Hi joblo,
thx for this. It seems there is a bug in the Code Smiley

Freshly downloaded the sources on another machine and gone through configure.ac
My version shows as follows, which explains the problem we got. (I manually edited and corrected it, and it works fine now)
Another thing is that I have to install libgmpv4-dev to meet another requirement, but after that cpuminer binary got compiled fine Cheesy

if test "x$OS" = "xWindows_NT" ; then
   # MinGW
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
else
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
fi

Where did you get the source code? That's not what's on my github.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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4ward
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March 12, 2018, 06:46:20 AM
 #3531

Hi joblo,
thx for this. It seems there is a bug in the Code Smiley

Freshly downloaded the sources on another machine and gone through configure.ac
My version shows as follows, which explains the problem we got. (I manually edited and corrected it, and it works fine now)
Another thing is that I have to install libgmpv4-dev to meet another requirement, but after that cpuminer binary got compiled fine Cheesy

if test "x$OS" = "xWindows_NT" ; then
   # MinGW
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
else
   AC_CHECK_LIB([pthread], [pthread_create], PTHREAD_LIBS="-lpthreadGC2",[])
fi

Where did you get the source code? That's not what's on my github.

this is how it looks after running "winbuild-cross.sh"

revert the file to original for "linux mode"
"git checkout -- configure.ac"

Kgonla
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March 14, 2018, 05:19:15 PM
 #3532

Could someone explain me this, please:

I5-3340M
YescryptR16
cpuminer-sse2

1 core
175 H/S

2 core
core 0 102 H/S
core 1 102 H/S

3 core
core 0 96 H/S
core 1 96 H/S
core 2 159 H/S !!!

4 core
core 0 94 H/S
core 1 94 H/S
core 2 94 H/S
core 3 94 H/S
joblo
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March 14, 2018, 07:41:27 PM
 #3533

It's called Hyperthreading, google it.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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plexmen
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March 14, 2018, 08:09:04 PM
 #3534

Could someone explain me this, please:

I5-3340M
YescryptR16
cpuminer-sse2

1 core
175 H/S

2 core
core 0 102 H/S
core 1 102 H/S
...
It's called Hyperthreading, google it.

I belive it's calling TurboBoost... Maybe the YescryptR16 algo it's very sensitive to the cpu clock frequency and when only one core worked TurboBoost run this core on maximum clock frequency and slow down clock frequency when more core utilized.
joblo
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March 14, 2018, 10:46:40 PM
 #3535

I belive it's calling TurboBoost... Maybe the YescryptR16 algo it's very sensitive to the cpu clock frequency and when only one core worked TurboBoost run this core on maximum clock frequency and slow down clock frequency when more core utilized.

Please don't speculate. YescryptR16 is less sensitve to CPU clock because it's memory hard. Adding more
CPU threads when memory bandwidth is saturated just causes CPU stalls. You also don't seem to
understand turboboost either. Turboboost only varies the CPU clock by about 15% and all cores run at the
same freq. Neither is the case with the data provided.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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Kgonla
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March 15, 2018, 12:34:46 AM
 #3536

Could someone explain me this, please:

I5-3340M
YescryptR16
cpuminer-sse2

1 core
175 H/S

2 core
core 0 102 H/S
core 1 102 H/S
...
It's called Hyperthreading, google it.

I belive it's calling TurboBoost... Maybe the YescryptR16 algo it's very sensitive to the cpu clock frequency and when only one core worked TurboBoost run this core on maximum clock frequency and slow down clock frequency when more core utilized.

This processor is 2.7 GHz base with 3.4 boost
I understand that when using 1 core it is working at 3.4 & when using 2 i at 2.7

What I don't understand is why when using 3 cores the 3st is giving much more hash rate than the others.
I think I must learn more about HT Wink

Thank you for your answers.
joblo
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March 15, 2018, 05:12:40 AM
 #3537

Forget about turboboost, it's just a slick way to make something bad sound good.
With all cores running the CPU produces too much heat at full speed so the clock is throtled back.

Your CPU has 2 physical cores but can run 4 logical threads. HT allows 2 threads to run on
a single core but they share resources. Two threads on one core using HT is not as fast as
each thread on a dedicated core. That's why you saw the numbers you did.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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segotiwul
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March 15, 2018, 05:46:26 AM
 #3538

Ideas for bitcoin games: download on our OS and write to any Hard drive / SSD / even USB drive about our identity.
- after that enter the email address in our config.txt file and boot rig
- login to dashboard simplemining.net using the same email we use and start managing the Smiley rig
- we can just test it for free and then pay 2 $ per rig per month
- If new miners apply by using auto-update system
- at least 1GB of system memory used (depending on how many GPUs are used from miners)
- Linux, programming, scripting, mining is a Smiley hobby we have

joblo
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March 15, 2018, 01:43:46 PM
 #3539

Spam! Spam! Spam! Spam!

No Spam here please.

cpuminer-opt developer, https://bitcointalk.org/index.php?topic=1326803.0
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March 16, 2018, 02:18:31 AM
 #3540

plexmen, if you want better results - you must overclock your northbridge to increase speed you l1,l2,l3 etc cash.
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