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Topic: CGMiner 7950 StartMining.bat - What am I missing? Only getting 300KH/s scrypt (Read 5152 times)

newbie
Activity: 29
Merit: 0
Figured it out in the end. Was just a driver issue. All back up to speed now Smiley Thanks.
hero member
Activity: 798
Merit: 531
Crypto is King.
I have started having a weird but similar issue.

I have been happily mining for months with 3*7950s using the below bat file:

cgminer --scrypt -o stratum+tcp://eu.wemineltc.com:3333 -u username -p x -I 19 -g 1 --thread-concurrency 22400

For some reason my GPU0 has decided to run at a much lower hasrate. The other cards hash at around 550 and GPU0 can only manage 80-100.

https://i.imgur.com/ztC6bd6.png

As I am sure you can see from the above I have intensity set low but even when it is at 19 it only manages 100-120. I checked the clock settings and CGMiner seems to think the GPU clock is a 500 and the Memory clock is at 120!! I tried overwriting these in cgminer but to no avail.

CCC seems to conclude what CGminer does about the clock speeds. (although I have found in previous experience these would normally increase as soon as there is any load on the card)

Any ideas anyone?


Sounds like you switched pools or edited something that should not have been changed. Delete your .bin file(s) in CGMiner directory. Reboot. Start CGMiner, wala, magick.
full member
Activity: 224
Merit: 100
One bitcoin to rule them all!
I have started having a weird but similar issue.

I have been happily mining for months with 3*7950s using the below bat file:

cgminer --scrypt -o stratum+tcp://eu.wemineltc.com:3333 -u username -p x -I 19 -g 1 --thread-concurrency 22400

For some reason my GPU0 has decided to run at a much lower hasrate. The other cards hash at around 550 and GPU0 can only manage 80-100.

https://i.imgur.com/ztC6bd6.png

As I am sure you can see from the above I have intensity set low but even when it is at 19 it only manages 100-120. I checked the clock settings and CGMiner seems to think the GPU clock is a 500 and the Memory clock is at 120!! I tried overwriting these in cgminer but to no avail.

CCC seems to conclude what CGminer does about the clock speeds. (although I have found in previous experience these would normally increase as soon as there is any load on the card)

Any ideas anyone?


Time for a cleaning of the fans and heatsinks?
newbie
Activity: 29
Merit: 0
I have started having a weird but similar issue.

I have been happily mining for months with 3*7950s using the below bat file:

cgminer --scrypt -o stratum+tcp://eu.wemineltc.com:3333 -u username -p x -I 19 -g 1 --thread-concurrency 22400

For some reason my GPU0 has decided to run at a much lower hasrate. The other cards hash at around 550 and GPU0 can only manage 80-100.

https://i.imgur.com/ztC6bd6.png

As I am sure you can see from the above I have intensity set low but even when it is at 19 it only manages 100-120. I checked the clock settings and CGMiner seems to think the GPU clock is a 500 and the Memory clock is at 120!! I tried overwriting these in cgminer but to no avail.

CCC seems to conclude what CGminer does about the clock speeds. (although I have found in previous experience these would normally increase as soon as there is any load on the card)

Any ideas anyone?

hero member
Activity: 798
Merit: 531
Crypto is King.
That's good news - what hash rate are you getting now?

With adequate cooling, 715KH/s on the outside card. Smiley The inside card is currently not on a riser, and doesn't have room to ventilate due to the card on the outer most 16x PCI-E slot. So I have it at -I 12 whilst the outer card is at -I 20. Both run flawlessly with out a single HW error. Thanks again for the tips everyone. Once I have all four cards mounted with risers/powered risers for both 16x, I will have each card running at 715KH/s+ for a total hashing power of  2,860KH/s. Smiley

No, my cards are not 7970s! Cheesy They are 7950s. I have no idea why I'm able to achieve such an amazing hash rate. The only thing I can think would be the fact that I am using 12.8 AMD drivers and 2.7 SDK drivers.
hero member
Activity: 898
Merit: 1000
That's good news - what hash rate are you getting now?
hero member
Activity: 798
Merit: 531
Crypto is King.
Final stats that worked are as follows:

Delete all .bin files associated with preferred version of CGMiner. I chose 3.1.1 due to recommendation and most up to date version.

Clear CGMiner .bat file.

add

cgminer --scrypt -o http://yourpooladdresshere.com:PORT# -u Miner.X -p XXX -I 7

Results were a new .bin file. The number after TC was 22400.

New .bat file.

add

cgminer --scrypt -o http://yourpooladdresshere.com:PORT# -u Miner.X -p XXX -I 13 -g 1 --thread-concurrency 22400

Results were an accepted connection, and correct hash rates in relation to O/C and -I XX command in .bat file.

Thank you for everyone's help. I'm sure this thread will help many more prospectors.  Wink
hero member
Activity: 798
Merit: 531
Crypto is King.
I'm not all-pro like as some folks are around here but my 2 cents:  you have gpu threads set to 2, so you can  not use a thread concurrency of 20k or so.

You can either have a gpu thread of 2 and use a low thread concurrency of somewhere between 7500 - 9000 for your card, or a gpu thread of 1 and have a thread concurrency of 20000 - 24000  (mine is set to 21712) .

Also, did you know that for scrypt, the intensity settings are all different than sha-256 ?  You may want to try an intensity of 19. High intensity for scrypt is 14-20



This is very helpful information! Thank you!
legendary
Activity: 2156
Merit: 1018
Buzz App - Spin wheel, farm rewards
I'm not all-pro like as some folks are around here but my 2 cents:  you have gpu threads set to 2, so you can  not use a thread concurrency of 20k or so.

You can either have a gpu thread of 2 and use a low thread concurrency of somewhere between 7500 - 9000 for your card, or a gpu thread of 1 and have a thread concurrency of 20000 - 24000  (mine is set to 21712) .

Also, did you know that for scrypt, the intensity settings are all different than sha-256 ?  You may want to try an intensity of 19. High intensity for scrypt is 14-20

newbie
Activity: 47
Merit: 0
Do as above, and delete all your bin files (created when you launch your miner will have a long file name)

remove the TC from your settings And also remove shaders. start your miner, and see what number throws up after tc in the file name.

thats a good place to start for thread concurrency.

i got 3x 7950 running 715h/s @ about 75-81degrees C pulling 900w

thread concurrency is in the 20,000's intensity 13

[edit]

sorry am running 7970

tc 16384, mem 1500, i 13
hero member
Activity: 533
Merit: 500
^Bitcoin Library of Congress.
Try typing
Code:
cgminer -o http://binarycoins.eu:9333/ -u p -p 1 -I 7
in command prompt and see if it works without the extra settings.
hero member
Activity: 798
Merit: 531
Crypto is King.


Suggestions please.

I can't get these cards to act right!  Cry
hero member
Activity: 798
Merit: 531
Crypto is King.
Cgminer let me set the TC to 25088 before I started giving mem value too high for cgminer. Had to drop it back to 7168. When I changed the value my kh/s went unaffected. Am I missing a command somewhere? Is --aggression the same as intensity? Any other commands I should try? This is mind boggling since I've ran them @600khs each no problem. I was a retard and didn't save my .bat compilation before formatting. Should I try different drivers? Different version of cgminer?
hero member
Activity: 898
Merit: 1000
I think its meant to be a multiple of your shader value, but I've just set mine all to 22000 and it seems to work okay. I seem to remember getting lots of HWs when I set the TC too low. Hope you get it sorted  Smiley
hero member
Activity: 798
Merit: 531
Crypto is King.
Thread concurrency should be more like 20000. Also, is that your username and password publicly visible?

20000? I thought thread C should be multiples of your shader value? Used generic info for login info, not my personal Smiley. Thanks for the friendly reminder though.
hero member
Activity: 898
Merit: 1000
Thread concurrency should be more like 20000. Also, is that your username and password publicly visible?
hero member
Activity: 798
Merit: 531
Crypto is King.
CGMiner 2.8.2
AMD 12.8
SDK 2.7

Seasonic Gold 80+ 1250W Modular
Corsair 4GB DDR 3 1666MHZ
ASUS M5A97 R2.0
500 GB Laptop Drive (soon to be replaced by a 60GB SSD OCZ)
Sempron 145 O/C'd to 3.6 GHz stable. MOBO has built in auto O/C features.
MICRO USB EDIMAX WIFI N

.bat looks like

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o http://binarycoins.eu:9333/ -u p -p 1 -I 13 --shaders 1792 -g 1 --gpu-threads 2 --thread-concurrency 7168 --lookup-gap 2 --worksize 256

What am I missing? I can only pull 300KH/s per card. With -I 20 I can pull 670KH/s per card with all HW errors.

I just did a fresh install of windows, turned auto updates off. If that makes any difference. I am having trouble understanding --shaders XXXX and --thread-concurrency XXXX
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