Yes, I'm familiar with the readme
The config suggests 824 with 2 threads. I seem to have 1 of 4 270x's that don't mine properly with the config; its finicky (Getting like 50 hs) so I tried to let yacminer decide the buffer and it decided on 446 MB. Didn't help too much. Using -g 1 crashes the miner as well. If i restart it enough, sometimes it will start mining but it didn't make it through the night last night.
timeout /t 30
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
del *bin
yacminer --scrypt-chacha -o stratum+tcp://xxxxxxxxx -u xxxxxx -p x --nfmin 4 --nfmax 30 --starttime 1402845776 --worksize 128 --lookup-gap 8 -g 2 --buffer-size 824 -R 1600
Furthermore, I cannot get past 2 khs, and it seems to be more stable on 1.8 khs. Is this all I can squeeze out of 270xs?
If you haven't run GPUz, I highly recommend it for troubleshooting. YACMiner is looking at how much memory it sees, and allocates 90% of it if you do not specify (512 * .9 = 460), so you're having trouble where you cannot allocate all of the cards memory. It will also show you how much memory is allocated to dedicated memory vs dynamic memory. If your hashing buffer winds up spilling into dynamic memory, your hashrate is going to be dismal.
My notes for NF=14 had my 2GB R7 250's hashing at 2.7 KH/sec, so you should be able to at least match that once you get your problems sorted out.
2.7?! I barely get that outta my 280x's.. What AMD driver do you recommend? 14.6 is the one I'm using.
GPUz is a cool tool, but it is showing me everything is correct as far as I can tell. Each card has 2 GB, memclock at 1400, gpu-engine at 955. I'm starting to mess with the lookup-gap, but I thought that was just set by the NF number. ..