103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// +build opencl
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package eth
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import (
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"fmt"
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"math/big"
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"strconv"
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"strings"
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"time"
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"github.com/ethereum/ethash"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/miner"
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)
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func (s *Ethereum) StartMining(threads int, gpus string) error {
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eb, err := s.Etherbase()
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if err != nil {
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err = fmt.Errorf("Cannot start mining without etherbase address: %v", err)
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glog.V(logger.Error).Infoln(err)
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return err
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}
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// GPU mining
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if gpus != "" {
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var ids []int
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for _, s := range strings.Split(gpus, ",") {
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i, err := strconv.Atoi(s)
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if err != nil {
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return fmt.Errorf("Invalid GPU id(s): %v", err)
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}
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if i < 0 {
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return fmt.Errorf("Invalid GPU id: %v", i)
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}
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ids = append(ids, i)
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}
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// TODO: re-creating miner is a bit ugly
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s.miner = miner.New(s, s.chainConfig, s.EventMux(), ethash.NewCL(ids))
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go s.miner.Start(eb, len(ids))
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return nil
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}
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// CPU mining
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go s.miner.Start(eb, threads)
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return nil
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}
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func GPUBench(gpuid uint64) {
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e := ethash.NewCL([]int{int(gpuid)})
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var h common.Hash
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bogoHeader := &types.Header{
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ParentHash: h,
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Number: big.NewInt(int64(42)),
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Difficulty: big.NewInt(int64(999999999999999)),
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}
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bogoBlock := types.NewBlock(bogoHeader, nil, nil, nil)
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err := ethash.InitCL(bogoBlock.NumberU64(), e)
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if err != nil {
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fmt.Println("OpenCL init error: ", err)
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return
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}
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stopChan := make(chan struct{})
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reportHashRate := func() {
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for {
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time.Sleep(3 * time.Second)
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fmt.Printf("hashes/s : %v\n", e.GetHashrate())
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}
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}
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fmt.Printf("Starting benchmark (%v seconds)\n", 60)
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go reportHashRate()
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go e.Search(bogoBlock, stopChan, 0)
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time.Sleep(60 * time.Second)
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fmt.Println("OK.")
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}
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func PrintOpenCLDevices() {
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ethash.PrintDevices()
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}
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