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Title: Saphire 7950s can't go over intensity 13 without HW errors. [[SOLVED]] Post by: Sancho on February 11, 2014, 09:02:36 PM I have a rig with 3 Sapphire 7950s - brand new.
Specifically - SAPPHIRE 100352-3L Radeon HD 7950 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card 4GB RAM Running cgminer 2.11.4 MSI Afterburner Beta Current settings - best I've been able to run stable. setx gpu_max_alloc_percent_100 setx gpu_use_sync_objects 1 cgminer.exe --scrypt -i 13 -g 2 -w 256 --thread-concurrency 8192 (followed by correct pool settings) When I increase the intensity beyond 13 it gives me hardware errors and inaccurate hashing power. When I increase the thread concurrency, cgminer will start but the GPUs will be disabled and it says GPU 0 Faulure, disabling! Thread 1 being disabled Error -5: Enqueueing kernel onto command queue. (c1EnqueueNDRangeKernel) It gives the same error message for GPU 1 as well. Please help, with the current settings I'm not getting more than 300 khash/s per card. Thank you! Title: Re: Saphire 7950s can't go over intensity 13 without HW errors. Please help! Post by: how-high on February 11, 2014, 09:14:21 PM howmuch ram?
Title: Re: Saphire 7950s can't go over intensity 13 without HW errors. Please help! Post by: Sancho on February 11, 2014, 09:39:36 PM 4GB.
I have two other rigs with 7950s and no issues like this - only the brand is different. Title: Re: Saphire 7950s can't go over intensity 13 without HW errors. Please help! Post by: how-high on February 11, 2014, 09:46:06 PM change -g 2 to -g 1
Title: Re: Saphire 7950s can't go over intensity 13 without HW errors. Please help! Post by: Wipeout2097 on February 11, 2014, 09:54:16 PM setx gpu_max_alloc_percent_100 setx GPU_MAX_ALLOC_PERCENT 100setx gpu_use_sync_objects 1 cgminer.exe --scrypt i-13 -g 2 -w 256 --thread-concurrency 8192 setx GPU_USE_SYNC_OBJECTS 1 cgminer.exe --scrypt -I 18 -g 1 -w 256 --thread-concurrency 21712 --gpu-memclock 1500 --gpu-engine 1000 Title: Re: Saphire 7950s can't go over intensity 13 without HW errors. Please help! Post by: Sancho on February 11, 2014, 10:07:01 PM I tried all of that and it reports the same error I quoted in the original post.
The GPU fails and it talks about enqueueing kernels. No idea what to do. Title: Re: Saphire 7950s can't go over intensity 13 without HW errors. Please help! Post by: Sancho on February 11, 2014, 10:35:23 PM I think I found the problem. One of the RAM sticks wasn't in all the way!
Doh! Thanks all! |