add optimizer

src/optimizer.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	log "github.com/sirupsen/logrus"
+	"sync"
+)
+
+type Optimizer struct {
+	scheduler  Scheduler
+	killedFlag bool
+}
+
+var optimizerInstance *Optimizer
+var OptimizerInstanceLock sync.Mutex
+
+func InstanceOfOptimizer() *Optimizer {
+	defer OptimizerInstanceLock.Unlock()
+	OptimizerInstanceLock.Lock()
+
+	if optimizerInstance == nil {
+		optimizerInstance = &Optimizer{}
+	}
+	return optimizerInstance
+}
+
+func (jhl *Optimizer) feed(job string, utils []int) {
+	log.Info("optimizer feed")
+	log.Info(job, utils)
+}

src/resource_pool.go

@@ -222,7 +222,7 @@ func (pool *ResourcePool) attach(GPU string, job string) {
 func (pool *ResourcePool) detach(GPU string, jobName string) {
 	if _, ok := pool.bindings[GPU]; ok {
 		if len(pool.bindings[GPU]) == 1 {
-			InstanceOptimizer().feed(jobName, pool.utils[GPU])
+			InstanceOfOptimizer().feed(jobName, pool.utils[GPU])
 			pool.utils[GPU] = []int{}
 		}
 	}