Litecoin cpu mining

[grue]

too lazy to search through 70+ pages of thread. so i'll ask some knowledgeable forum member :p

I'm currently using:
https://bitcointalk.org/index.php?topic=47417.0

    http://www.wuala.com/jbw9/pub/Bitcoin/Tenebrix/miner/win/test/minerd-amdfam10-sse4a-64.exe/ (built by twobits)

on
AMD Phenom quad core processor
windows 7 x64

Is this the optimum miming setup for my system? if not, what are some alternatives? there's another post that says to mine on a ubuntu vm to get faster speeds. does that really work?

[pooler]

I'm glad you asked. There appears to be much confusion about how to obtain the best hashrate.
Let's see, how many khash/s do you currently get, and at what clock speed?

As I recently wrote on the Liteco.in forum,

I have tested the miner on a Core 2 and on a Phenom II, and on both I get the same hashrate/clock ratio, about 1.015 khash/s per GHz.
That is, I have 1.63 at 1.6 GHz on the Core 2 and 3.55 kh/s at 3.5 GHz on the Phenom II.
(All this compiling ArtForz's cpuminer with gcc -O3.)

(By ArtForz's miner I mean https://github.com/ArtForz/cpuminer)

I have heard that i7's can do slightly better than that, but it is my understanding that on 64-bit platforms it should almost always be possible to get at least as many khash/s as GHz (per core, of course).

By the way... many report that the AMD-optimized miner for Windows linked by the OP is faster than the i7-optimized one... on i7's! If that's true, don't you think it's a bit confusing for newcomers?

[grue]

my total hashrate (by adding up the rates from each thread) is about 7.4 khash/s, on a 2.3 ghz cpu (AMD Phenom quad core)

[Graet]

i use same miner on amd athlon2 and amd phenom6
i get ~3Khash/per thread
so the athlon gets me ~6
phenom ~18
this is at standard clocks ets, i say ~ because reported hashrate fluctuates

on these maths your 4 core should be at least 10 and close to 12

I also just did a post at https://bitcointalk.org/index.php?topic=54620.msg650745#msg650745 that answers some of your other questions

[grue]

i use same miner on amd athlon2 and amd phenom6
i get ~3Khash/per thread
so the athlon gets me ~6
phenom ~18
this is at standard clocks ets, i say ~ because reported hashrate fluctuates

on these maths your 4 core should be at least 10 and close to 12

I also just did a post at https://bitcointalk.org/index.php?topic=54620.msg650745#msg650745 that answers some of your other questions

mine is a phenom (NOT II), so maybe it doesn't have optimizations that the newer ones have?

btw, what miner do you use? and on what OS?

[Graet]

i use same miner on amd athlon2 and amd phenom6
i get ~3Khash/per thread
so the athlon gets me ~6
phenom ~18
this is at standard clocks ets, i say ~ because reported hashrate fluctuates

on these maths your 4 core should be at least 10 and close to 12

I also just did a post at https://bitcointalk.org/index.php?topic=54620.msg650745#msg650745 that answers some of your other questions

mine is a phenom (NOT II), so maybe it doesn't have optimizations that the newer ones have?

btw, what miner do you use? and on what OS?

ahh good point i only have newer amd cpus, all my intels are old lol:)

win7 x64 and xubuntu x64, check the link in my post above

[pooler]

i use same miner on amd athlon2 and amd phenom6
i get ~3Khash/per thread
so the athlon gets me ~6
phenom ~18
this is at standard clocks ets, i say ~ because reported hashrate fluctuates

Graet, may I ask the exact clock speeds and top hashrates per thread on those two rigs?

[grue]

i use same miner on amd athlon2 and amd phenom6
i get ~3Khash/per thread
so the athlon gets me ~6
phenom ~18
this is at standard clocks ets, i say ~ because reported hashrate fluctuates

on these maths your 4 core should be at least 10 and close to 12

I also just did a post at https://bitcointalk.org/index.php?topic=54620.msg650745#msg650745 that answers some of your other questions

mine is a phenom (NOT II), so maybe it doesn't have optimizations that the newer ones have?

btw, what miner do you use? and on what OS?

after catalyst 11.12 (no more 100% cpu), my hashrate increased to around 2.35 khash/s per thread. but still not near your 10-12 khash/s

[Mousepotato]

after catalyst 11.12 (no more 100% cpu), my hashrate increased to around 2.35 khash/s per thread. but still not near your 10-12 khash/s

I call shenanigans.  No more 100% CPU even with multiple GPUs?

[grue]

after catalyst 11.12 (no more 100% cpu), my hashrate increased to around 2.35 khash/s per thread. but still not near your 10-12 khash/s

I call shenanigans.  No more 100% CPU even with multiple GPUs?

[Graet]

i use same miner on amd athlon2 and amd phenom6
i get ~3Khash/per thread
so the athlon gets me ~6
phenom ~18
this is at standard clocks ets, i say ~ because reported hashrate fluctuates

Graet, may I ask the exact clock speeds and top hashrates per thread on those two rigs?

I'll have to check, but basically they are btc mining rigs and i get the shakes if they are down
so whatever is default, i literally turned rigs off, swapped cpus, fired up and started mining


grue i use
 a compiled binary for Windows:
    https://github.com/downloads/coblee/litecoin/litecoin-windows-miner-10-10-2011.zip
and
http://content.wuala.com/contents/jbw9/pub/Bitcoin/Tenebrix/miner/win/test/minerd-amdfam10-sse4a-64.exe?dl=1
on xubuntu 64 bit, ubuntu 64bit and windows 7 64bit

[Mousepotato]

https://i.imgur.com/Bml6T.png

OMG OMG OMG! I can't wait to get off work and try .12 out!  Thanks for the heads-up!

[pooler]

Graet, may I ask the exact clock speeds and top hashrates per thread on those two rigs?

I'll have to check, but basically they are btc mining rigs and i get the shakes if they are down

Ahah, yeah, I know that feeling!
Let me know if you can get the exact clock speeds and hashrate per thread, these days I'm working on further optimizing ArtForz's minerd, and I'm trying to collect as much performance data as possible, for reference.

[Graet]

Graet, may I ask the exact clock speeds and top hashrates per thread on those two rigs?

I'll have to check, but basically they are btc mining rigs and i get the shakes if they are down

Ahah, yeah, I know that feeling!
Let me know if you can get the exact clock speeds and hashrate per thread, these days I'm working on further optimizing ArtForz's minerd, and I'm trying to collect as much performance data as possible, for reference.

bit offtopic but I assume you know about
https://github.com/coblee/litecoin/wiki/Mining-hardware-comparison
and
http://liteco.in/threads/the-hardware-and-hashrate-thread.21/

[pooler]

bit offtopic but I assume you know about
https://github.com/coblee/litecoin/wiki/Mining-hardware-comparison
and
http://liteco.in/threads/the-hardware-and-hashrate-thread.21/

Yes, I know about those links, but sadly most of the hash rates reported there appear to be suboptimal.
I am interested in the top hash rate a thread can do per GHz, not in real-life situations where the miner is only using spare cycles.

[grue]

bit offtopic but I assume you know about
https://github.com/coblee/litecoin/wiki/Mining-hardware-comparison
and
http://liteco.in/threads/the-hardware-and-hashrate-thread.21/

Yes, I know about those links, but sadly most of the hash rates reported there appear to be suboptimal.
I am interested in the top hash rate a thread can do per GHz, not in real-life situations where the miner is only using spare cycles.

so just set miner priority as realtime :p

[pooler]

so just set miner priority as realtime :p

Eheh! Yeah, I have two dedicated mining rigs, what I would like to understand is if anybody can get a better performance than the one I reported above on AMD cpus. In the hardware thread on the Liteco.in forum, for instance, there's a report of a user who got 2.9 kh/s per thread with a 2.3 GHz Athlon II, and I still don't know if that is just a typo or if it's really possible.

[GenTarkin]

Just remember this one simple rule of thumb for scrypt miners (tbx,ltc)
If you are gettin above or around 1kh/s/core/ghz - you are running the proper miner =)

[grue]

so just set miner priority as realtime :p

Eheh! Yeah, I have two dedicated mining rigs, what I would like to understand is if anybody can get a better performance than the one I reported above on AMD cpus. In the hardware thread on the Liteco.in forum, for instance, there's a report of a user who got 2.9 kh/s per thread with a 2.3 GHz Athlon II, and I still don't know if that is just a typo or if it's really possible.

i set mine to above normal (MSDN said that realtime will lock the system up), and the max i got was 2.42 per thread. try asking him what miner he's using, maybe even hashes of executable.

[creativex]

Times have changed...now getting 7kh/core(55kh/s total). Not fully loaded though, scrypt seems to be limited to 8 threads.