Exemplo n.º 1
0
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.")
}
Exemplo n.º 2
0
func (s *Ethereum) 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
		cl := ethash.NewCL(ids)
		s.miner = miner.New(s, s.EventMux(), cl)
		go s.miner.Start(eb, len(ids))
		return nil
	}

	// CPU mining
	go s.miner.Start(eb, threads)
	return nil
}