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Author Topic: [Need] Reaper v13 config for successful LTC mining with Radeon 7970  (Read 7515 times)
goxed
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July 09, 2012, 06:14:20 AM
 #1

I am getting like 90% GPU errors with Reaper v13 and default litecoin.conf parameters. Lowering aggression to 12 reduces hashing speed to 250kh/s.

Looking to review Bitcoin / Crypto mining Hardware.
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tacotime
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July 09, 2012, 06:24:55 AM
 #2

try

aggression 17
gpu_thread_concurrency 8192 ((note: GCN has 64 threads per CU, and 7970 has 32 CU so 64 threads * 32 CU = 8192))
sharethreads 8
lookup_gap 2

I've seen a few people also recommend gpu_thread_concurrency be 32768 (4*64 work items per CU), so try that too

Code:
XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
superfastkyle
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July 11, 2012, 02:59:15 AM
 #3

Here is the best I could get

at 975 core
    1375 mem
    1.034 v
set with afterburner

litecoin.conf

worksize 256
aggression 13
threads_per_gpu 4
sharethreads 18
lookup_gap 2
gpu_thread_concurrency 8192

Anything over 13 aggression causes nothing but stales for me

475 k/h
about 125w with undervolt per card
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July 11, 2012, 03:01:58 AM
 #4

I also got about 530kh with more severe overclocks but the extra 75 watts or so was too much for me
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July 11, 2012, 05:09:09 AM
 #5

remember you need to delete .bin files create by the reaper compilation, after any change made on the .conf files, otherwise it will not apply the changes.
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July 13, 2012, 03:27:30 AM
 #6

remember you need to delete .bin files create by the reaper compilation, after any change made on the .conf files, otherwise it will not apply the changes.
reaper v13b4 creates a new bin for concurrency and share threads, no need to worry about deleting
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