package main import ( "flag" "fmt" "sync/atomic" "time" "golang.org/x/text/language" "golang.org/x/text/message" ) func partner(result chan uint64, mine chan int, next chan int) { count := uint64(0) for true { <- mine select { case next <- 0: default: } count += 1 if clock_mode && atomic.LoadInt32(&stop) == 1 { break } if !clock_mode && count >= stop_count { break } } atomic.AddInt64(&threads_left, -1); result <- count } func main() { var ring_size int ring_sizeOpt := flag.Int("r", 2, "The number of threads per cycles") bench_init() ring_size = *ring_sizeOpt tthreads := nthreads * ring_size threads_left = int64(tthreads) result := make(chan uint64) channels := make([]chan int, tthreads) for i := range channels { channels[i] = make(chan int, 1) } for i := 0; i < tthreads; i++ { pi := (i + nthreads) % tthreads go partner(result, channels[i], channels[pi]) } fmt.Printf("Starting\n"); atomic.StoreInt32(&stop, 0) start := time.Now() for i := 0; i < nthreads; i++ { channels[i] <- 0 } wait(start, true); atomic.StoreInt32(&stop, 1) end := time.Now() delta := end.Sub(start) fmt.Printf("\nDone\n") global_counter := uint64(0) for i := 0; i < tthreads; i++ { select { case channels[i] <- 0: default: } global_counter += <- result } p := message.NewPrinter(language.English) p.Printf("Duration (ms) : %f\n", delta.Seconds()); p.Printf("Number of processors : %d\n", nprocs); p.Printf("Number of threads : %d\n", tthreads); p.Printf("Cycle size (# thrds) : %d\n", ring_size); p.Printf("Total Operations(ops): %15d\n", global_counter) p.Printf("Ops per second : %18.2f\n", float64(global_counter) / delta.Seconds()) p.Printf("ns per ops : %18.2f\n", float64(delta.Nanoseconds()) / float64(global_counter)) p.Printf("Ops per threads : %15d\n", global_counter / uint64(tthreads)) p.Printf("Ops per procs : %15d\n", global_counter / uint64(nprocs)) p.Printf("Ops/sec/procs : %18.2f\n", (float64(global_counter) / float64(nprocs)) / delta.Seconds()) p.Printf("ns per ops/procs : %18.2f\n", float64(delta.Nanoseconds()) / (float64(global_counter) / float64(nprocs))) }