...
The good news is that this should be what the 5x/6x miners were looking for on linux. I suggest you download the latest changes from git and start experimenting with TCs that are a multiple of your shader count after setting the above variable to 100%.
Wow - I am leaving work and was planning to try the parameter at home - and now I see that you already did my homework :-)
many thanks !!!
To say the lack of progress on scrypt performance is bugging me would be an understatement in the extreme. Thank you for spotting this, but I fear even this is not the holy grail. Goddamn witchcraft....
I am excited !
git pull - make - start with the export and -D -T
[2012-07-25 17:28:35] CL Platform vendor: Advanced Micro Devices, Inc.
[2012-07-25 17:28:35] CL Platform name: AMD Accelerated Parallel Processing
[2012-07-25 17:28:35] CL Platform version: OpenCL 1.2 AMD-APP (938.1)
[2012-07-25 17:28:35] List of devices:
[2012-07-25 17:28:35] 0 Cypress
[2012-07-25 17:28:35] Selected 0: Cypress
[2012-07-25 17:28:35] Long-polling activated for
http://p2p:9327/long-polling [2012-07-25 17:28:35] Preferred vector width reported 4
[2012-07-25 17:28:35] Max work group size reported 256
[2012-07-25 17:28:35]
Max mem alloc size is 536870912 [2012-07-25 17:28:35] Selecting scrypt kernel
[2012-07-25 17:28:35] GPU 0: selecting lookup gap of 2
[2012-07-25 17:28:35] GPU 0: selecting
thread concurrency of 7200 [2012-07-25 17:28:35] No binary found, generating from source
[2012-07-25 17:28:35] Setting worksize to 256
[2012-07-25 17:28:35] cl_amd_media_ops found, setting BITALIGN
[2012-07-25 17:28:35] BFI_INT patch requiring device found, patched source with BFI_INT
[2012-07-25 17:28:35] CompilerOptions: -D LOOKUP_GAP=2 -D CONCURRENT_THREADS=7200 -D WORKSIZE=256 -D BITALIGN -D BFI_INT -D GOFFSET
[2012-07-25 17:28:38] X-Roll-Ntime expiry set to 10
cgminer crashed but restarting with -g 1 lets it hash away with about 260 kH/s :-)
ATM it runs with
DISPLAY=:0 GPU_MAX_ALLOC_PERCENT=100 ../cgminerltc/cgminer -o
http://p2p:9327 -u x -p y --scrypt --shaders 1440 -I 15 -g 1 --auto-fan --auto-gpu --gpu-engine 600-900 --gpu-memclock 1000 --temp-cutoff 85 --gpu-fan 20-70 --temp-overheat 75 --temp-target 65
-I 15 seems to be the sweet spot, only 3 kH/s less than -I 16 but 0.x% rejects instead of >10%
Thanks again ! ... and I may later try lower tc with -g 2 and expermient more :-)