[Need] Reaper v13 config for successful LTC mining with Radeon 7970

[goxed]

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.

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[tacotime]

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

[superfastkyle]

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

[superfastkyle]

I also got about 530kh with more severe overclocks but the extra 75 watts or so was too much for me

[phantitox]

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.

[grimd34th]

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