diff --git a/plugins/nf-float/src/main/com/memverge/nextflow/FloatBin.groovy b/plugins/nf-float/src/main/com/memverge/nextflow/FloatBin.groovy
index 54e16c9..5c71551 100644
--- a/plugins/nf-float/src/main/com/memverge/nextflow/FloatBin.groovy
+++ b/plugins/nf-float/src/main/com/memverge/nextflow/FloatBin.groovy
@@ -13,11 +13,12 @@ class FloatBin {
     private static final binName = 'float'
 
     static Path get(String opCenterAddr) {
-        if (!opCenterAddr) {
-            return Paths.get(binName)
-        }
         def ret = getFloatBinPath()
         if (ret == null) {
+            if (!opCenterAddr) {
+                // no where to retrieve the binary
+                return Paths.get(binName)
+            }
             final URL src = getDownloadUrl(opCenterAddr)
             final Path pluginsDir = Global.getPluginsDir()
             ret = pluginsDir.resolve(binName)
@@ -45,9 +46,8 @@ class FloatBin {
 
     private static Path getFloatBinPath() {
         final sep = Pattern.quote(File.pathSeparator)
-        def paths = Arrays.asList(System.getenv("PATH").split(sep))
-        paths = new ArrayList<String>(paths)
-        paths.add(Global.getPluginsDir().toString())
+        def paths = [Global.getPluginsDir().toString()]
+        paths.addAll(Arrays.asList(System.getenv("PATH").split(sep)))
         for (String path : paths) {
             def floatPath = Paths.get(path).resolve(binName)
             if (Files.exists(floatPath)) {
diff --git a/plugins/nf-float/src/main/com/memverge/nextflow/FloatGridExecutor.groovy b/plugins/nf-float/src/main/com/memverge/nextflow/FloatGridExecutor.groovy
index 99e55d9..cbece07 100644
--- a/plugins/nf-float/src/main/com/memverge/nextflow/FloatGridExecutor.groovy
+++ b/plugins/nf-float/src/main/com/memverge/nextflow/FloatGridExecutor.groovy
@@ -60,6 +60,7 @@ class FloatGridExecutor extends AbstractGridExecutor {
     protected void register() {
         super.register()
         uploadBinDir()
+        syncFloatBin()
     }
 
     @Override
@@ -113,6 +114,14 @@ class FloatGridExecutor extends AbstractGridExecutor {
         }
     }
 
+    private void syncFloatBin() {
+        final oc = floatJobs.getOc("")
+        def cmd = floatConf.getCliPrefix(oc)
+        cmd << "release" << "sync"
+        def res = Global.execute(cmd)
+        log.info "[float] sync the float binary, $res"
+    }
+
     private static String getMemory(TaskRun task) {
         final mem = task.config.getMemory()
         final giga = mem?.toGiga()
diff --git a/plugins/nf-float/src/main/com/memverge/nextflow/Global.groovy b/plugins/nf-float/src/main/com/memverge/nextflow/Global.groovy
index e8f48b8..5e28e49 100644
--- a/plugins/nf-float/src/main/com/memverge/nextflow/Global.groovy
+++ b/plugins/nf-float/src/main/com/memverge/nextflow/Global.groovy
@@ -36,6 +36,10 @@ class CmdRes {
         return exit == 0
     }
 
+    String toString() {
+        return "exit code: ${exit}, out: ${out}"
+    }
+
     int exit
     String out
 }