Re: PhoenixMiner 2.6: fastest Ethereum/Ethash miner with lowest devfee (Windows)
I try PhoenixMiner 2.6b with recommended above parameters, on Farm1 PhoenixMiner didn't start and show the same error "clCreateCommandQueue (-6)" but on second Farm PhoenixMiner started up and started working. After restart PhoenixMiner on Farm2 I recive error "clCreateCommandQueue (-6)" again 
I try restart PhoenixMiner and MSI Afterburner several times and change parameter GPU_FORCE_64BIT_PTR from 0 to 1 and backward - i have achieved success several times (PhoenixMiner
started UP sometimes)..
What i noticed, when Phoenix starts up normally Phoenix define 4GB VRAM, when Phoenix can't starts, it define only 3GB VRAM
Log when Phoenix can't start:
17568:15:09:59.153: main No CUDA driver found
17568:15:09:59.477: main Available GPUs for mining:
17568:15:09:59.477: main GPU1: Radeon RX 570 Series (pcie 1), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU2: Radeon RX 570 Series (pcie 2), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU3: Radeon RX 570 Series (pcie 4), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU4: Radeon RX 570 Series (pcie 5), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU5: Radeon RX 570 Series (pcie 6), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.491: main ADL library initialized
Log when Phoenix started normally:
17569:20:12:50.903: main No CUDA driver found
17569:20:12:51.179: main Available GPUs for mining:
17569:20:12:51.179: main GPU1: Radeon RX 570 Series (pcie 1), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU2: Radeon RX 570 Series (pcie 2), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU3: Radeon RX 570 Series (pcie 4), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU4: Radeon RX 570 Series (pcie 5), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU5: Radeon RX 570 Series (pcie 6), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.192: main ADL library initialized
My rigs have 2GB RAM Memory (900-800 MB free when all works)
Sorry for my english)
Something is wrong with your drivers. We've never seen RX 570 to report less than 4 GB of memory or only OpenCL 1.2 (it reports OpenCL 2.0). You probably have to use DDU to remove your drivers then install them again (for example the blockchain drivers) and make sure that they are patched if you have BIOS modded your cards.I try restart PhoenixMiner and MSI Afterburner several times and change parameter GPU_FORCE_64BIT_PTR from 0 to 1 and backward - i have achieved success several times (PhoenixMiner
started UP sometimes)..
What i noticed, when Phoenix starts up normally Phoenix define 4GB VRAM, when Phoenix can't starts, it define only 3GB VRAM
Log when Phoenix can't start:
17568:15:09:59.153: main No CUDA driver found
17568:15:09:59.477: main Available GPUs for mining:
17568:15:09:59.477: main GPU1: Radeon RX 570 Series (pcie 1), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU2: Radeon RX 570 Series (pcie 2), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU3: Radeon RX 570 Series (pcie 4), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU4: Radeon RX 570 Series (pcie 5), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.477: main GPU5: Radeon RX 570 Series (pcie 6), OpenCL 1.2, 3 GB VRAM, 32 CUs
17568:15:09:59.491: main ADL library initialized
Log when Phoenix started normally:
17569:20:12:50.903: main No CUDA driver found
17569:20:12:51.179: main Available GPUs for mining:
17569:20:12:51.179: main GPU1: Radeon RX 570 Series (pcie 1), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU2: Radeon RX 570 Series (pcie 2), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU3: Radeon RX 570 Series (pcie 4), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU4: Radeon RX 570 Series (pcie 5), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.179: main GPU5: Radeon RX 570 Series (pcie 6), OpenCL 1.2, 4 GB VRAM, 32 CUs
17569:20:12:51.192: main ADL library initialized
My rigs have 2GB RAM Memory (900-800 MB free when all works)
Sorry for my english)
I solve the problem by adding 2GB Ram... (Summary 4GB Ram per farm, before that it was 2)
In other forums wrote that it is related to compilation DAG in Memory
Can you test it and really solve by modify PhoenixMner? Or only way - add more RAM memory? 2GB -it is enough for the miner, but small for start miner....