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

[pekv2]

Now, I'm banging out awesome hash rate. All together, 844.49 khash/s.

[1714839989]

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[CaptChadd]

That a great hash rate, I which I had that kind of rate.

[pekv2]

Not as great as bitlanes, which is nine thousand khash/s.

I should make with due. Lots of tweaks here and there.

Your name looks familiar to me.

[tgsrge]

sorry for the bump (and for my very very very poor hash rate (this is merely a test) but....

is every thread mining individually, or every thread mining together (by this i mean, instead of getting ~30>khps for a single mining "operation") or not? (am i getting 8 "individual" mining "operations" at 3.3khps each ?)

if this is the case is there a way for me to make all threads mine together instead of individually?

[pieppiep]

It is 8 individual mining threads, so 8 x 3.3khps = 26.4khps.
It is not possible to make all threads mine together because every step in calculating a hash is dependent on the previous one.
Well, maybe some little steps are possible to do in parallel, but keeping the threads in sync would cost much time and make overall hashing slower.

[SebastianJu]

How can i configure this? There were only 3 files in the zip and no config or txt. Only starting the exe results in an error because he cant reach the Server.

Thanks!
Sebastian

[pieppiep]

If you start it in a console with --help it tells you this :

Usage: minerd [OPTIONS]
Options:
  -o, --url=URL         URL of mining server (default: http://127.0.0.1:9332/)
  -O, --userpass=U:P    username:password pair for mining server
  -u, --user=USERNAME   username for mining server
  -p, --pass=PASSWORD   password for mining server
  -x, --proxy=[PROTOCOL://]HOST[:PORT]  connect through a proxy
  -t, --threads=N       number of miner threads (default: number of processors)
  -r, --retries=N       number of times to retry if a network call fails
                          (default: retry indefinitely)
  -R, --retry-pause=N   time to pause between retries, in seconds (default: 30)
  -T, --timeout=N       network timeout, in seconds (default: 180)
  -s, --scantime=N      upper bound on time spent scanning current work,
                          in seconds (default: 5)
      --no-longpoll     disable X-Long-Polling support
  -q, --quiet           disable per-thread hashmeter output
  -D, --debug           enable debug output
  -P, --protocol-dump   verbose dump of protocol-level activities
  -c, --config=FILE     load a JSON-format configuration file
  -V, --version         display version information and exit
  -h, --help            display this help text and exit

So the most simple way is this :

minerd --url http://poolofyourchoice:9332/ --userpass yourusername:yourpassword

[SebastianJu]

Thanks pieppiep!

[SebastianJu]

Hm... looks like my Intel core 2 Duo T7700 doesnt profit from the changes. I made some tests with the following result:

Old, original dll
-----------
original exe - 6.72khash/s

New dll
-----------
original exe - 6.82khash/s
new exe - 2.55khash/s
minerd-ssse3-core2 - 2,6khash/s
minerd-amdfam10-sse4a - 2,68khash/s
minerd-corei7-avx - crash
minerd-i7 - crash

scryptminer - 6,6khash/s

So it looks like the original.exe with the new dll has a slight better result. I tested all test with 2 threads and 5 seconds update. Then i created an excelsheet of all the values (sometimes some hundred values).

[zorgberg]

The Windows 32-bit binary triggers my spybot as a backdoor/trojan..  What up with that?

[Smoovious]

The Windows 32-bit binary triggers my spybot as a backdoor/trojan..  What up with that?

CGminer also sets off my anti-virus too.

Someone probably was embedding the miners in some trojans they were sending out to get their botnet mining for them.

-- Smoov

[Gladamas]

The Windows 32-bit binary triggers my spybot as a backdoor/trojan..  What up with that?

CGminer also sets off my anti-virus too.

Someone probably was embedding the miners in some trojans they were sending out to get their botnet mining for them.

-- Smoov

Not necessarily. At least my antivirus hates almost every Bitcoin program I use. (Example from a few days ago: "VIRUS DETECTED: Win32.BitcoinMiner" for CGMiner.)

[Smoovious]

The Windows 32-bit binary triggers my spybot as a backdoor/trojan..  What up with that?

CGminer also sets off my anti-virus too.

Someone probably was embedding the miners in some trojans they were sending out to get their botnet mining for them.

-- Smoov

Not necessarily. At least my antivirus hates almost every Bitcoin program I use. (Example from a few days ago: "VIRUS DETECTED: Win32.BitcoinMiner" for CGMiner.)

Yeah, but it wouldn't be logged as a virus (with that label), unless it was found in some malware it got to analyze. Since it is labelled specifically Win32.BitcoinMiner, they know what it was, not just some heuristic false positive...

besides... how many people have we had coming to the forums and IRC, asking how to do that very kind of install on a system automatically?

-- Smoov

[pooler]

Version 2.2.3

• This version includes the long-awaited ARM NEON implementation of both scrypt and SHA-256d. To use it you have to specify "-mfpu=neon" in CFLAGS when compiling. Since there is no portable way of detecting the capabilities of an ARM processor at runtime, the resulting binary will only be compatible with those systems that support the NEON instruction set (not all ARMv7-based SoCs do). According to my tests, this version brings a 10% speedup to Cortex-A8 and a 40% speedup to Cortex-A9.
• Slight speed improvement (2-3%) for the AVX-specific scrypt implementation.
• A --benchmark option is now available to benchmark a system without the need of connecting to a work provider.
• I've added some architecture-specific notes to the README.

The source code is, as always, available at GitHub. Binaries are available here. This time I've also built a couple static binaries for Linux (x86 and x86-64), for those people who really don't want to bother compiling the miner themselves.

[Greedi]

• A --benchmark option is now available to benchmark a system without the need of connecting to a work provider.

can you tell more about that option?

[pekv2]

Thanks Pooler!

Gained 1 kh/s .

[Greedi]

Thanks Pooler!

Gained 1 kh/s .

i've lost 0.7 kh/s

[pekv2]

Thanks Pooler!

Gained 1 kh/s .

i've lost 0.7 kh/s

Does your processor have AVX?

[Greedi]

Thanks Pooler!

Gained 1 kh/s .

i've lost 0.7 kh/s

Does your processor have AVX?

yes, my Bulldozer x6 an x8 does, haven't tested on x8 yet tho

[freshzive]

I get this error in OS X Mountain Lion:

dyld: Library not loaded: /opt/local/lib/libidn.11.dylib

libidn is installed via fink, so I'm not sure what's up?