func GPUBench(gpuid uint64) { e := ethash.NewCL([]int{int(gpuid)}) var h common.Hash bogoHeader := &types.Header{ ParentHash: h, Number: big.NewInt(int64(42)), Difficulty: big.NewInt(int64(999999999999999)), } bogoBlock := types.NewBlock(bogoHeader, nil, nil, nil) err := ethash.InitCL(bogoBlock.NumberU64(), e) if err != nil { fmt.Println("OpenCL init error: ", err) return } stopChan := make(chan struct{}) reportHashRate := func() { for { time.Sleep(3 * time.Second) fmt.Printf("hashes/s : %v\n", e.GetHashrate()) } } fmt.Printf("Starting benchmark (%v seconds)\n", 60) go reportHashRate() go e.Search(bogoBlock, stopChan, 0) time.Sleep(60 * time.Second) fmt.Println("OK.") }
func (s *Expanse) StartMining(threads int, gpus string) error { eb, err := s.Etherbase() if err != nil { err = fmt.Errorf("Cannot start mining without etherbase address: %v", err) glog.V(logger.Error).Infoln(err) return err } // GPU mining if gpus != "" { var ids []int for _, s := range strings.Split(gpus, ",") { i, err := strconv.Atoi(s) if err != nil { return fmt.Errorf("Invalid GPU id(s): %v", err) } if i < 0 { return fmt.Errorf("Invalid GPU id: %v", i) } ids = append(ids, i) } // TODO: re-creating miner is a bit ugly s.miner = miner.New(s, s.chainConfig, s.EventMux(), ethash.NewCL(ids)) go s.miner.Start(eb, len(ids)) return nil } // CPU mining go s.miner.Start(eb, threads) return nil }