[ANN]: cpuminer-opt v3.8.8.1, open source optimized multi-algo CPU miner - page 21.

AltScope

sr. member

Activity: 714

Merit: 252

Quote from: JHB3 on March 20, 2018, 03:25:34 PM

...

can you link a post where someone explains how to run the miner. which command etc. that would be really nice. Or maybe link that specific post or instructions in the ANN post?

cpuminer-aes-sse42 -h

replace cpuminer-aes-sse42 with the build your using, pools will also have quickstart commands/options listed

JHB3

full member

Activity: 420

Merit: 100

ELIXIR TOKEN

Quote from: joblo on March 18, 2018, 01:00:10 PM

cpuminer-opt-3.8.4

Added yescryptr32 algo for WAVI coin.
Added URL to API data.
Improved detection of __int128 support (Linux only)
Compile support for CPUs without SSSE3 (no binary support)

https://github.com/JayDDee/cpuminer-opt/releases/tag/v3.8.4

Additional notes:

This release may fix some recently reported compile issues related to unsupported
SIMD instructions and lack of support for __int128. This may help some older AMD CPUs
and Linux distributions that previously failed to compile.

There may be some other unknown underlying issues so YMMV. In particular Centos 6
requires a newer version of gmp that is avalable for that release.

There is no Windows binary for CPUs with SSE2 but not SSSE3. cpuminer-sse2 is built for
Intel Core2 which includes SSSE3. However, I can be bribed.

hello,

can you link a post where someone explains how to run the miner. which command etc. that would be really nice. Or maybe link that specific post or instructions in the ANN post?

joblo

legendary

Activity: 1470

Merit: 1114

If you'r e the lucky owner of a CPU with AVX512, maybe you aren't so lucky because
v3.8.4 fails to compile. I included some experimental AVX512 code but was unable
to test compile it, and sure enough, it won't compile.

Until a new release is available you can remove the erroneous backslash in avxdefs.h line 1244
or remove the entire AVX512 block of code.

stas260385

newbie

Activity: 38

Merit: 0

Quote from: joblo on March 18, 2018, 09:33:24 PM

Quote from: 4ward on March 18, 2018, 03:52:43 PM

Can you take a look at the Argon2d algo and add it?
There seem to be 2 variants, for 2 coins (wonder whats the difference between the algos, but the hashrate is about 3 times faster on Credits coin than on Dynamic)

https://github.com/BeastPool/cpuminer-argon2d

It looks like the same algo but with different parameters. It should be a straightforward implementation
because it was forked from cpuminer-opt. But I'll probably rework it to reduce code duplication/triplication.

It would be great because this fork didn't support AVX2, only AVX and AVX512f.
Waiting for adding Argon2d algo's too!

joblo

legendary

Activity: 1470

Merit: 1114

Quote from: 4ward on March 18, 2018, 03:52:43 PM

Can you take a look at the Argon2d algo and add it?
There seem to be 2 variants, for 2 coins (wonder whats the difference between the algos, but the hashrate is about 3 times faster on Credits coin than on Dynamic)

https://github.com/BeastPool/cpuminer-argon2d

It looks like the same algo but with different parameters. It should be a straightforward implementation
because it was forked from cpuminer-opt. But I'll probably rework it to reduce code duplication/triplication.

4ward

member

Activity: 473

Merit: 18

Can you take a look at the Argon2d algo and add it?
There seem to be 2 variants, for 2 coins (wonder whats the difference between the algos, but the hashrate is about 3 times faster on Credits coin than on Dynamic)

https://github.com/BeastPool/cpuminer-argon2d

joblo

legendary

Activity: 1470

Merit: 1114

cpuminer-opt-3.8.4

Added yescryptr32 algo for WAVI coin.
Added URL to API data.
Improved detection of __int128 support (Linux only)
Compile support for CPUs without SSSE3 (no binary support)

https://github.com/JayDDee/cpuminer-opt/releases/tag/v3.8.4

Additional notes:

This release may fix some recently reported compile issues related to unsupported
SIMD instructions and lack of support for __int128. This may help some older AMD CPUs
and Linux distributions that previously failed to compile.

There may be some other unknown underlying issues so YMMV. In particular Centos 6
requires a newer version of gmp that is avalable for that release.

There is no Windows binary for CPUs with SSE2 but not SSSE3. cpuminer-sse2 is built for
Intel Core2 which includes SSSE3. However, I can be bribed.

itbrnnet

newbie

Activity: 21

Merit: 0

Hello!
Are there any chances for algo YescryptR32 to be supported? There's a new coin called WAVI (https://bitcointalksearch.org/topic/ann-cpu-mining-wavi-yescryptr32-no-pre-mine-masternode-3146751) which is based on this algo.

Thanks beforehand.

Sonic-X

jr. member

Activity: 69

Merit: 2

Quote from: andnet on March 17, 2018, 04:42:47 AM

How to do cpu affinity and cpu max use in this good prog? Need only 10101010 cpu and 50%

-t 4 --cpu-affinity 0x55

Walrusbonzo

hero member

Activity: 682

Merit: 500

Quote from: andnet on March 17, 2018, 04:42:47 AM

How to do cpu affinity and cpu max use in this good prog? Need only 10101010 cpu and 50%

Do it in Windows task manager, details tab, right click on the program, set affinity, that's how I do it.

andnet

member

Activity: 141

Merit: 10

How to do cpu affinity and cpu max use in this good prog? Need only 10101010 cpu and 50%

Enth

jr. member

Activity: 103

Merit: 1

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

joblo

legendary

Activity: 1470

Merit: 1114

Quote from: segotiwul on March 15, 2018, 01:46:26 AM

Spam! Spam! Spam! Spam!

No Spam here please.

segotiwul

member

Activity: 322

Merit: 10

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

legendary

Activity: 1470

Merit: 1114

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.

Kgonla

newbie

Activity: 129

Merit: 0

Quote from: plexmen on March 14, 2018, 04:09:04 PM

Quote from: Kgonla on March 14, 2018, 01:19:15 PM

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
...

Quote from: joblo on March 14, 2018, 03:41:27 PM

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

legendary

Activity: 1470

Merit: 1114

Quote from: plexmen on March 14, 2018, 04:09:04 PM

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.

plexmen

newbie

Activity: 1

Merit: 0

Quote from: Kgonla on March 14, 2018, 01:19:15 PM

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
...

Quote from: joblo on March 14, 2018, 03:41:27 PM

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

legendary

Activity: 1470

Merit: 1114

It's called Hyperthreading, google it.

Kgonla

newbie

Activity: 129

Merit: 0

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

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