diff --git a/src/scheduler_fair.go b/src/scheduler_fair.go
index 35194c7..e05f43e 100644
--- a/src/scheduler_fair.go
+++ b/src/scheduler_fair.go
@@ -396,7 +396,9 @@ func (scheduler *SchedulerFair) UpdateQuota() {
 		availableCPU -= (requests[queue].CPU * base) / requests[queue].NumberGPU
 		quota.Memory += ((requests[queue].Memory * base) / requests[queue].NumberGPU) / 1000
 	}
-	if availableGPU > 0 {
+	/* left more and more resource */
+	if availableGPU > 0 && availableGPU < per {
+		flag := false
 		for _, queue := range candidates {
 			if quota, ok := scheduler.queuesQuota[queue]; ok && quota.NumberGPU >= requests[queue].NumberGPU*1000 {
 				continue
@@ -405,8 +407,19 @@ func (scheduler *SchedulerFair) UpdateQuota() {
 			quota.NumberGPU += availableGPU
 			quota.CPU += (requests[queue].CPU * availableGPU) / requests[queue].NumberGPU
 			quota.Memory += ((requests[queue].Memory * availableGPU) / requests[queue].NumberGPU) / 1000
+			flag = true
 			break
 		}
+		if !flag { /* make sure no resource is waste */
+			for _, queue := range candidates {
+				quota := scheduler.queuesQuota[queue]
+				quota.NumberGPU += availableGPU
+				quota.CPU += (requests[queue].CPU * availableGPU) / requests[queue].NumberGPU
+				quota.Memory += ((requests[queue].Memory * availableGPU) / requests[queue].NumberGPU) / 1000
+				flag = true
+				break
+			}
+		}
 	}
 	log.Info("After ")
 	for queue, quota := range scheduler.queuesQuota {