An (even more) optimized version of cpuminer (pooler's cpuminer, CPU-only)

[konradp]

Do you guys know what stratum_gen_work function does? (cpu-miner.c -> line 653).
For example I don't understand the purpose of this line:
/* Increment extranonce2 */
   for (i = 0; i < sctx->xnonce2_size && !++sctx->job.xnonce2; i++);

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[usao]

Forgive my ignorance, but what algos are supported? I dont see a list in the OP...

AFAIK scrypt and sha256d

So, no X11 or X13 support?
Does anyone know where I can find a X11 or X13 miner?

[pooler]

Do you guys know what stratum_gen_work function does? (cpu-miner.c -> line 653).
For example I don't understand the purpose of this line:
/* Increment extranonce2 */
   for (i = 0; i < sctx->xnonce2_size && !++sctx->job.xnonce2; i++);

As stated in the comment, that line increments the extranonce2 field so that every time that new work is generated it is different. See the Stratum protocol specifications.

[konradp]

Do you guys know what stratum_gen_work function does? (cpu-miner.c -> line 653).
For example I don't understand the purpose of this line:
/* Increment extranonce2 */
   for (i = 0; i < sctx->xnonce2_size && !++sctx->job.xnonce2; i++);

As stated in the comment, that line increments the extranonce2 field so that every time that new work is generated it is different. See the Stratum protocol specifications.

Thanks, I just don't understand why isn't it simply

Code:

sctx->job.xnonce2++

But that isn't very important for right now, I was just curious.

[pooler]

Thanks, I just don't understand why isn't it simply

Code:

sctx->job.xnonce2++

Because xnonce2 is not an integer, but an array of bytes.

[konradp]

Thanks, I just don't understand why isn't it simply

Code:

sctx->job.xnonce2++

Because xnonce2 is not an integer, but an array of bytes.

Ach, indeed, I didn't notice, thanks!

[wintrop]

Hi all. Please tell me how to configure cpuminer under quark algorithm?

[Grifftech2k4]

Is this usable with Talkcoin?

[jedimstr]

Hi all. Please tell me how to configure cpuminer under quark algorithm?

Is this usable with Talkcoin?

Read the first post in the thread, the third Q and A item.  Your answers are there.

Basically, you walked into a Catholic Church asking about the Book of Mormon. Or the Koran.

[primer-]

I'm looking to modify cpu-miner.c to include the entire command line. When compiled, instead of using options and args (./minerd -o XXX:XX -u xxx -p xxx -q -B) i want to specify them all in the source.
This has to work on all/most cpuminer forks, if anyone can do it, PM me for a 0.05BTC bounty.

[Massimo80]

I'm looking to modify cpu-miner.c to include the entire command line. When compiled, instead of using options and args (./minerd -o XXX:XX -u xxx -p xxx -q -B) i want to specify them all in the source.
This has to work on all/most cpuminer forks, if anyone can do it, PM me for a 0.05BTC bounty.

You want to hardcode command-line parameters into the source code? Why in the world would you want that? Recompiling the software from source everytime a paramater needs to be changed just doesn't make any sense.

If you want a simpler way to launch the program, just put the full command line in a script and then launch that.

[jedimstr]

I'm looking to modify cpu-miner.c to include the entire command line. When compiled, instead of using options and args (./minerd -o XXX:XX -u xxx -p xxx -q -B) i want to specify them all in the source.
This has to work on all/most cpuminer forks, if anyone can do it, PM me for a 0.05BTC bounty.

You want to hardcode command-line parameters into the source code? Why in the world would you want that? Recompiling the software from source everytime a paramater needs to be changed just doesn't make any sense.

If you want a simpler way to launch the program, just put the full command line in a script and then launch that.

Or better yet, make a JSON conf file.  minerd supports using configuration files with the -c parameter.  Any changes to configuration can be put in the conf file and then you'd only need to load ./minerd -c miner.conf everytime.

[jarvis]

does this miner have an api function?

[pooler]

does this miner have an api function?

No.

[skimmer333]

Hi,
Noob question. I'm using win7-64bit
Can i solo mine using minerd?
If so, can you assist with the command line?
Is there anything else I need to install?

Cheers,
Skimmer.

[alalalk71]

minerd -a scrypt -t 12 -s 6 -o stratum+tcp://doge-eu.poolerino.com:3333 -O alalalk71:a1s2d3f4
[2014-06-28 13:18:14] Starting Stratum on stratum+tcp://doge-eu.poolerino.com:33
33
[2014-06-28 13:18:14] Binding thread 2 to cpu 2
[2014-06-28 13:18:14] Binding thread 5 to cpu 5
[2014-06-28 13:18:14] Binding thread 9 to cpu 9
[2014-06-28 13:18:14] Binding thread 11 to cpu 11
[2014-06-28 13:18:14] Binding thread 0 to cpu 0
[2014-06-28 13:18:14] Binding thread 4 to cpu 4
[2014-06-28 13:18:14] Binding thread 6 to cpu 6
[2014-06-28 13:18:14] Binding thread 7 to cpu 7
[2014-06-28 13:18:14] Binding thread 10 to cpu 10
[2014-06-28 13:18:14] 12 miner threads started, using 'scrypt' algorithm.
[2014-06-28 13:18:14] Binding thread 3 to cpu 3
[2014-06-28 13:18:14] Binding thread 8 to cpu 8
[2014-06-28 13:18:14] Binding thread 1 to cpu 1
[2014-06-28 13:18:17] Stratum authentication failed
[2014-06-28 13:18:17] ...retry after 30 seconds

Stratum authentication failed  i  see this error and what can id o for resolve it ?

[nuggetbram]

I'm getting

Code:

fatal error: openssl/sha.h: no such file or directory

while trying to build on windows with mingw. I don't think there's any openssl packages I need to get for this so what have I done wrong?

[pooler]

I'm getting

Code:

fatal error: openssl/sha.h: no such file or directory

while trying to build on windows with mingw. I don't think there's any openssl packages I need to get for this so what have I done wrong?

OpenSSL is referenced nowhere in the source code of cpuminer. You must be trying to compile something else, probably a fork of it.

[nuggetbram]

I'm getting

Code:

fatal error: openssl/sha.h: no such file or directory

while trying to build on windows with mingw. I don't think there's any openssl packages I need to get for this so what have I done wrong?

OpenSSL is referenced nowhere in the source code of cpuminer. You must be trying to compile something else, probably a fork of it.

Yeah, this is a fork, skeincoin. Thought they were *mostly* identical and I'd get a faster response here (if any!)

Thanks anyway!

[ag123]

hi pooler,

here's some feature requests not sure if these features may have made it into the updated versions

1) a sharelog
cpuminer runs with debug output, however, the output are often not captured
a share log is needed, i.e. for the shares submitted to a mining pool it would be helpful to log the
- time
- disposition (accept or reject)
- target
- hash
- data

and perhaps some other info in a text sharelog file. this would help with verifying from historical submitted entries if there are issues

2) a GUI
today cpuminer is running with text messages, however, most PCs/laptops etc are already running in a windowing gui environment. it'd probably be a good idea to start developing a gui for it instead of showing k/hashes per sec or m/hashes per sec as texts, those could possibly become running graphs / charts in a window. it would also pave the way for more interactivity during the runs, e.g. the user can pause/start the activities and add future options

i'm thinking could use Qt or some similar cross platform gui libs to develop these. This would help simplying the programming task (Qt is cross platform - one code many platforms) and after all most of the offline bitcoin/litecoin etc wallets are using Qt for their Gui wallets.
the 'gui' can run in its own thread and is likely low cpu load consumption for that matter. The makefiles could have options to 'exclude' compiling the gui for those who's not interested in having it.

the 'old' text output can even be accomodated in the 'gui' thread by having applog push the text output into a queue and for the 'gui' thread pop them and to spool them out to stdout/stderr. the 'gui' thread can go in a loop waiting for commands so that you could implement features like pause / continue similar to the gui

just 2 cents