ATTN Litecoin GPU Miners - Scrypt support for cgminer

[Tittiez]

Anyone using cgminer on a 6770, 5830, or 6950 have any recommended settings? My friend wants to mine and we got about 150kh/s from his 6770, 228kh/s from the 5830, and 356kh/s from the 6950. But I'm wondering if any more is possible.

I know there is room for improvement for the 5830.

[1714834067]

1714834067

[1714834067]

1714834067

[1714834067]

1714834067

[SuperDuperJenkins]

I have some 6570 recommended settings that's all I tested out last night , testing 1 card at a time

AMD Radeon HD 6570 Recommended Settings:

--scrypt --worksize 256 --lookup-gap 2 --thread-concurrency 4096 -g 2 -I 17

[n4l3hp]

5850 at 775 core / 1000 mem

[-ck]

Am I misunderstanding, I thought it was supposed to select the best values? It selected 8192 for both of them.

Yeah, I'll stick with my settings that are supposed to produce invalids but aren't. My 6850 runs at 6144 and I can take it up 15+ in intensity. My 5770 running at 3584 and I push intensity 18 on it without any invalids.

No it wont pick the best. Read again. It will pick the largest. Then find the multiple of your shaders less than or equal to that and YOU set that manually. That's why I put that list of shader counts below...

[-ck]

Am I misunderstanding, I thought it was supposed to select the best values? It selected 8192 for both of them.

Yeah, I'll stick with my settings that are supposed to produce invalids but aren't. My 6850 runs at 6144 and I can take it up 15+ in intensity. My 5770 running at 3584 and I push intensity 18 on it without any invalids.

No it wont pick the best. Read again. It will pick the largest. Then find the multiple of your shaders less than or equal to that and YOU set that manually. That's why I put that list of shader counts below...

6850 is 960
5770 is 800

Therefore you should try tc of
6850: 7680
5770: 8000

[Tittiez]

Am I misunderstanding, I thought it was supposed to select the best values? It selected 8192 for both of them.

Yeah, I'll stick with my settings that are supposed to produce invalids but aren't. My 6850 runs at 6144 and I can take it up 15+ in intensity. My 5770 running at 3584 and I push intensity 18 on it without any invalids.

No it wont pick the best. Read again. It will pick the largest. Then find the multiple of your shaders less than or equal to that and YOU set that manually. That's why I put that list of shader counts below...

6850 is 960
5770 is 800

Therefore you should try tc of
6850: 7680
5770: 8000

OH. I read wrong, thank you for clarifying.

And those actually pull better numbers.

Now I can give my friend (and anyone else) better number to try too. Awesome.

[-ck]

Am I misunderstanding, I thought it was supposed to select the best values? It selected 8192 for both of them.

Yeah, I'll stick with my settings that are supposed to produce invalids but aren't. My 6850 runs at 6144 and I can take it up 15+ in intensity. My 5770 running at 3584 and I push intensity 18 on it without any invalids.

No it wont pick the best. Read again. It will pick the largest. Then find the multiple of your shaders less than or equal to that and YOU set that manually. That's why I put that list of shader counts below...

6850 is 960
5770 is 800

Therefore you should try tc of
6850: 7680
5770: 8000

OH. I read wrong, thank you for clarifying.

And those actually pull better numbers.

Now I can give my friend (and anyone else) better number to try too. Awesome.

Great. I guess I can put in a database into the software to lookup the best values after querying the device... maybe soon.

[Tittiez]

My new highs:

6850: 262kh/s

Code:

cgminer --scrypt --worksize 128 --gpu-engine 900 --gpu-memclock 500 --lookup-gap 2 --thread-concurrency 7680 -g 1 --intensity 17

5770: 207kh/s

Code:

cgminer --scrypt --worksize 256 --gpu-engine 885 --gpu-memclock 1235 --lookup-gap 2 --thread-concurrency 8000 -g 1 --intensity 18

[SuperDuperJenkins]

I'm quitting Cryptocurrencies..


https://bitcointalk.org/index.php?topic=94835.0;topicseen

Expect Mass Dump Soon

[Tittiez]

I'm quitting Cryptocurrencies..


https://bitcointalk.org/index.php?topic=94835.0;topicseen

Expect Mass Dump Soon

I'll take all your litecoins if you, uh, don't want them.

[-ck]

My new highs:

6850: 262kh/s

Code:

cgminer --scrypt --worksize 128 --gpu-engine 900 --gpu-memclock 500 --lookup-gap 2 --thread-concurrency 7680 -g 1 --intensity 17

5770: 207kh/s

Code:

cgminer --scrypt --worksize 256 --gpu-engine 885 --gpu-memclock 1235 --lookup-gap 2 --thread-concurrency 8000 -g 1 --intensity 18

There might not be enough info in opencl to do this from cgminer. What does
cgminer.exe -n
report on these cards?

[smoothie]

I'm quitting Cryptocurrencies..


https://bitcointalk.org/index.php?topic=94835.0;topicseen

Expect Mass Dump Soon

You dont have to cry...

[Tittiez]

There might not be enough info in opencl to do this from cgminer. What does
cgminer.exe -n
report on these cards?

Code:

 [2012-07-23 17:43:40] CL Platform 0 vendor: Advanced Micro Devices, Inc.
 [2012-07-23 17:43:40] CL Platform 0 name: AMD Accelerated Parallel Processing
 [2012-07-23 17:43:40] CL Platform 0 version: OpenCL 1.2 AMD-APP (938.1)
 [2012-07-23 17:43:40] Platform 0 devices: 2
 [2012-07-23 17:43:40]  0       Barts
 [2012-07-23 17:43:40]  1       Juniper
 [2012-07-23 17:43:40] GPU 0 AMD Radeon HD 6800 Series hardware monitoring enabl
ed
 [2012-07-23 17:43:40] GPU 1 ATI Radeon HD 5700 Series hardware monitoring enabl
ed
 [2012-07-23 17:43:40] 2 GPU devices max detected

Why?

What do you mean? I'm mining right now.

[-ck]

There might not be enough info in opencl to do this from cgminer. What does
cgminer.exe -n
report on these cards?

Code:

 [2012-07-23 17:43:40] CL Platform 0 vendor: Advanced Micro Devices, Inc.
 [2012-07-23 17:43:40] CL Platform 0 name: AMD Accelerated Parallel Processing
 [2012-07-23 17:43:40] CL Platform 0 version: OpenCL 1.2 AMD-APP (938.1)
 [2012-07-23 17:43:40] Platform 0 devices: 2
 [2012-07-23 17:43:40]  0       Barts
 [2012-07-23 17:43:40]  1       Juniper
 [2012-07-23 17:43:40] GPU 0 AMD Radeon HD 6800 Series hardware monitoring enabl
ed
 [2012-07-23 17:43:40] GPU 1 ATI Radeon HD 5700 Series hardware monitoring enabl
ed
 [2012-07-23 17:43:40] 2 GPU devices max detected

Why?

What do you mean? I'm mining right now.

I mean so that cgminer could detect the best settings automatically.

See it says 6800 not what 68x0 ? Same with 5700, not what 57x0. It mattters.

[SuperDuperJenkins]

Sold them for cash and then donated to charity sorry

[-ck]

Okay I've thought about it some more and I think the best way forwards is to do away with the --lookup-gap and --thread-concurrency options and just get the user to input the shader count of their device and let cgminer choose. This will always set lookup gap to 2 and set the thread concurrency to the highest it can be that is a multiple of the shader count which would be much easier for users to configure. This then leaves you with the choice of gpu threads and intensity still. Otherwise there is far too much to configure, and most people won't be able to figure out how to do it. I plan to include a readme with the shader count of the various hardware like in that earlier post. What do people think of this?

Eg for a 6850 and 5770:
cgminer --shaders 960,800

[pekv2]

802 Khash/s. Two 5850's.

Code:

cgminer --scrypt -o http://server -u username -p password --worksize 256 --lookup-gap 2 --thread-concurrency 5600 -g 1 --intensity 18

[-ck]

802 Khash/s. Two 5850's.

Code:

cgminer --scrypt -o http://server -u username -p password --worksize 256 --lookup-gap 2 --thread-concurrency 5600 -g 1 --intensity 18

Image link broken. On 5850s you should try a multiple of 1440. So try 7200.

[-ck]

I'm receiving reports that cgminer doesn't work fine with Coinotron. I checked it out myself and indeed there seems to be some kind of incompatibility. I'm wondering what could be source of the issue. Does cgminer support getworks with lower than base share targets ? Does it support LP messages from different port than mining port?

Yes and yes.

[Mobius]

Okay I've thought about it some more and I think the best way forwards is to do away with the --lookup-gap and --thread-concurrency options and just get the user to input the shader count of their device and let cgminer choose. This will always set lookup gap to 2 and set the thread concurrency to the highest it can be that is a multiple of the shader count which would be much easier for users to configure. This then leaves you with the choice of gpu threads and intensity still. Otherwise there is far too much to configure, and most people won't be able to figure out how to do it. I plan to include a readme with the shader count of the various hardware like in that earlier post. What do people think of this?

Eg for a 6850 and 5770:
cgminer --shaders 960,800

Could you set those as the defaults and have the options to change them via command line or in the .conf file.