How to configure PhoenixMiner for Ethereum Classic? (Stability Settings)

Pool Connection Parameters

1. Use -pool with the official Ethereum Classic stratum endpoint, such as us1-etc.ethermine.org:4444 or asia1-etc.ethermine.org:4444. SSL is not required for most ETC pools; plain TCP is standard.

2. Specify your Ethereum Classic wallet address using -wal. Ensure it is a valid ETC address starting with 0x, and avoid any ETH or other chain addresses to prevent loss of rewards.

3. Set -proto 2 to enforce compatibility with Ethereum Classic’s widely adopted eth-proxy stratum protocol used by Ethermine, Hiveon, and Nanopool.

4. Define -coin etc explicitly to lock PhoenixMiner into Ethereum Classic mode. This prevents automatic DAG switching based on pool hostname detection and ensures devfee is deducted in ETC, not ETH.

5. Configure a failover pool via -pool2 and matching -wal2, -proto2 2, and -coin2 etc to maintain uninterrupted mining during primary pool outages.

Stability-Critical Runtime Flags

1. Apply -stales 0 to disable stale share submission. Ethereum Classic’s lower block time increases stale probability; discarding them avoids unnecessary network load and reduces GPU driver timeouts.

2. Set -ftimeout 300 to trigger reconnection after five minutes without a new job. This mitigates long hangs caused by intermittent upstream node lag or pool-side congestion.

3. Enforce -retrydelay 15 to minimize recovery latency while avoiding aggressive reconnect loops that may trigger IP rate limiting from pool servers.

4. Use -ptimeout 0 to disable auto-failback to the primary pool. Manual control over pool switching prevents erratic behavior when secondary pools respond faster due to regional routing differences.

5. Limit GPU memory pressure with -maxdly 50 to cap DAG generation delay, preventing kernel-mode hangs on older AMD Polaris or NVIDIA Pascal GPUs under sustained load.

DAG and Memory Management

1. Pre-generate the current ETC DAG using -bench 1024 before full deployment. Ethereum Classic’s DAG epoch increments every 30,000 blocks; benchmarking confirms compatibility with your GPU’s VRAM capacity at the target epoch.

2. Add -wdog 0 to disable PhoenixMiner’s internal watchdog timer if running under Windows with third-party overclocking tools like MSI Afterburner. Conflicts between external voltage/frequency controls and internal health checks often cause spontaneous restarts.

3. Force single-threaded DAG initialization with -mport 0 on systems with dual-CPU sockets or NUMA configurations. Parallel DAG loads may induce memory allocation failures on non-uniform memory access platforms.

4. Set -cclock 0 and -mclock 0 to lock core and memory clocks if stability issues persist. Dynamic clock scaling introduces timing inconsistencies during DAG verification rounds, especially on cards with aging VRMs.

5. Disable GPU power management entirely using -power 0 on Linux systems running NVIDIA drivers version 535 or newer. Aggressive power state transitions interfere with consistent Ethash nonce search intervals.

Network and Driver Hardening

1. Bind PhoenixMiner to a specific network interface using -iface enp3s0 (replace with actual interface name) to eliminate routing ambiguity when multiple NICs are present, particularly on server-grade hardware with bonded interfaces.

2. Disable IPv6 stack interaction with -noipv6 1 if your local network infrastructure does not fully support IPv6. Partial IPv6 deployments frequently result in DNS resolution stalls affecting pool connection handshakes.

3. Set -gser 0 to bypass GPU serial number reporting. Some enterprise GPU firmware versions expose inconsistent serial strings that trigger PhoenixMiner’s internal validation failure and abort startup.

4. Reduce PCIe bus polling frequency via -pcie 1 to prevent interrupt saturation on motherboards with more than eight GPU slots. High-frequency polling degrades PCIe bandwidth availability for memory-mapped DAG transfers.

5. Launch PhoenixMiner with real-time scheduling priority using chrt -r 99 on Linux or start /realtime on Windows to guarantee uninterrupted execution cycles during critical hash calculation windows.

Common Questions and Answers

Q: Why does PhoenixMiner report “Invalid DAG” when connecting to an ETC pool?A: This occurs when -coin etc is omitted or misconfigured. Without explicit coin specification, PhoenixMiner defaults to ETH DAG generation, which is incompatible with ETC’s different seed and epoch progression.

Q: Can I use the same wallet address for both ETH and ETC mining?A: Yes — Ethereum Classic shares the same address format as Ethereum. However, ensure your wallet supports ETC deposits and has been verified on an ETC blockchain explorer before initiating payouts.

Q: What causes frequent “GPU timeout” errors on AMD RX 580 cards?A: These stem from outdated AMD Adrenalin drivers or insufficient VRAM cooling. Upgrade to driver version 23.12.1 or later and verify VRAM junction temperature stays below 95°C during DAG load.

Q: Is it safe to run PhoenixMiner alongside remote desktop services on Windows?A: Not recommended. Remote Desktop Protocol (RDP) forces GPU context switches that disrupt continuous DAG computation. Use headless Windows Server Core or disable RDP session graphics acceleration via Group Policy.