diff --git a/metal/paddle-mobile-metallib/paddle-mobile-metallib.xcodeproj/project.pbxproj b/metal/paddle-mobile-metallib/paddle-mobile-metallib.xcodeproj/project.pbxproj
index 007fd5e42982539dd9872cce4f2cead5727fde8d..9eef77e7f12b7a15a0f43ecfb3b105f95cadfb8f 100644
--- a/metal/paddle-mobile-metallib/paddle-mobile-metallib.xcodeproj/project.pbxproj
+++ b/metal/paddle-mobile-metallib/paddle-mobile-metallib.xcodeproj/project.pbxproj
@@ -352,6 +352,7 @@
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
 				MTL_ENABLE_DEBUG_INFO = NO;
+				MTL_LANGUAGE_REVISION = iOSMetal10;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Debug;
@@ -362,6 +363,7 @@
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
 				MTL_ENABLE_DEBUG_INFO = NO;
+				MTL_LANGUAGE_REVISION = iOSMetal10;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Release;
diff --git a/metal/paddle-mobile/paddle-mobile.xcodeproj/project.pbxproj b/metal/paddle-mobile/paddle-mobile.xcodeproj/project.pbxproj
index 14cfcb3a92158fa9d98d2d2574ccc23eaa3f5477..4b3dd397deaec378415417c0bbf822182b1fce36 100644
--- a/metal/paddle-mobile/paddle-mobile.xcodeproj/project.pbxproj
+++ b/metal/paddle-mobile/paddle-mobile.xcodeproj/project.pbxproj
@@ -17,9 +17,9 @@
 		4AA1EA942146661500D0F791 /* ShapeKernel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4AA1EA932146661500D0F791 /* ShapeKernel.swift */; };
 		4AA1EA982146666500D0F791 /* FlattenOp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4AA1EA972146666500D0F791 /* FlattenOp.swift */; };
 		4AA1EAA2214912CD00D0F791 /* FlattenKernel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4AA1EAA1214912CC00D0F791 /* FlattenKernel.swift */; };
-		C28FE02F21BA68C00054EFAC /* Metal.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C28FE02C21BA68C00054EFAC /* Metal.framework */; };
-		C28FE03021BA68C00054EFAC /* MetalPerformanceShaders.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C28FE02D21BA68C00054EFAC /* MetalPerformanceShaders.framework */; };
-		C28FE03121BA68C00054EFAC /* MetalKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C28FE02E21BA68C00054EFAC /* MetalKit.framework */; };
+		C28FE02F21BA68C00054EFAC /* Metal.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C28FE02C21BA68C00054EFAC /* Metal.framework */; settings = {ATTRIBUTES = (Weak, ); }; };
+		C28FE03021BA68C00054EFAC /* MetalPerformanceShaders.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C28FE02D21BA68C00054EFAC /* MetalPerformanceShaders.framework */; settings = {ATTRIBUTES = (Weak, ); }; };
+		C28FE03121BA68C00054EFAC /* MetalKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C28FE02E21BA68C00054EFAC /* MetalKit.framework */; settings = {ATTRIBUTES = (Weak, ); }; };
 		D3831F70E7E0B565B9AC22DA /* Pods_paddle_mobile.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = DD2E06330A1E7129C918DB46 /* Pods_paddle_mobile.framework */; };
 		FC039B6F20E11C3C0081E9F8 /* paddle_mobile.h in Headers */ = {isa = PBXBuildFile; fileRef = FC039B6D20E11C3C0081E9F8 /* paddle_mobile.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		FC039B9720E11C9A0081E9F8 /* Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = FC039B9420E11C9A0081E9F8 /* Extensions.swift */; };
diff --git a/metal/paddle-mobile/paddle-mobile/Src/Common/Types.swift b/metal/paddle-mobile/paddle-mobile/Src/Common/Types.swift
index 21a9f4385d7205c02414634e042c1e958d1ab120..2267d173ef17545f412274c0cf82dc14ec268e5c 100644
--- a/metal/paddle-mobile/paddle-mobile/Src/Common/Types.swift
+++ b/metal/paddle-mobile/paddle-mobile/Src/Common/Types.swift
@@ -22,8 +22,6 @@ public protocol SummableMultipliable: Equatable {
 }
 
 public protocol PrecisionProtocol: SummableMultipliable{
-    init(inFloat: Float32)
-    init(inFloat16: Float16)
     init<P: PrecisionProtocol>(_ inP: P)
     static var bitSize: UInt { get }
     static func initializeValue() -> Self
@@ -42,11 +40,12 @@ extension Float16: PrecisionProtocol {
     }
     
     public init<P>(_ inP: P) where P : PrecisionProtocol {
-        if P.bitSize == Float32.bitSize {
-            self = Float16(inFloat: inP as! Float32)
-        } else if P.bitSize == Float16.bitSize {
-            self = inP as! Float16
-        } else {
+        switch P.precisionType {
+        case .Float32:
+            fatalError()
+        case .Float16:
+            self = inP as! Int16
+        default:
             fatalError()
         }
     }
@@ -55,12 +54,6 @@ extension Float16: PrecisionProtocol {
         return 16
     }
     
-    public init(inFloat16: Float16) {
-        self = inFloat16
-    }
-    public init(inFloat: Float32) {
-        self = Int16(inFloat)
-    }
 }
 
 extension Float32: PrecisionProtocol {
@@ -74,23 +67,16 @@ extension Float32: PrecisionProtocol {
     }
     
     public init<P>(_ inP: P) where P : PrecisionProtocol {
-        if P.bitSize == Float32.bitSize {
+        switch P.precisionType {
+        case .Float32:
             self = inP as! Float32
-        } else if P.bitSize == Float16.bitSize {
-            self = Float32.init(inP as! Float16)
-        } else {
+        case .Float16:
+            self = Float32.init(Int32.init(inP as! Int16))
+        default:
             fatalError()
         }
     }
     
-    public init(inFloat: Float32) {
-        self = inFloat
-    }
-    
-    public init(inFloat16: Float16) {
-        self = Float32.init(inFloat16)
-    }
-    
     public static var bitSize: UInt {
         return 32
     }
diff --git a/metal/paddle-mobile/paddle-mobile/Src/Framework/Loader.swift b/metal/paddle-mobile/paddle-mobile/Src/Framework/Loader.swift
index c437d284ccff5fd76d4bda26bc011083a8aeb998..afd75e82d19d431e72f25f2a379fa35328dd98a3 100644
--- a/metal/paddle-mobile/paddle-mobile/Src/Framework/Loader.swift
+++ b/metal/paddle-mobile/paddle-mobile/Src/Framework/Loader.swift
@@ -161,8 +161,9 @@ public class Loader<P: PrecisionProtocol>: Loaderable{
             let programDesc = ProgramOptimize<P>.init().optimize(originProgramDesc: originProgramDesc)
             
             //      let programDesc = PMProgramDesc.init(protoProgram: protoProgram)
-            
-            print(programDesc)
+            if GlobalConfig.shared.debug {
+                print(programDesc)
+            }
             
             guard programDesc.blocks.count > 0 else {
                 throw PaddleMobileError.loaderError(message: "count of blocks must greater than 0")
diff --git a/metal/paddle-mobile/paddle-mobile/Src/Framework/Texture.swift b/metal/paddle-mobile/paddle-mobile/Src/Framework/Texture.swift
index 72195a22ea5fdde4f8c813c5c4863a9b9850e7f2..9c60909e60dd9619c64bec2d1db40bad3710a1d8 100644
--- a/metal/paddle-mobile/paddle-mobile/Src/Framework/Texture.swift
+++ b/metal/paddle-mobile/paddle-mobile/Src/Framework/Texture.swift
@@ -165,7 +165,9 @@ public class Texture: Tensorial {
     
     // 初始化时 dim padToFourDim 模型中的维度（一般来说 nchw），前面补全0
     init(device: MTLDevice, inDim: Dim) {
-        print(" in dim > \(inDim)")
+        if GlobalConfig.shared.debug {
+            print(" in dim > \(inDim)")
+        }
         var fourDim: Dim
         if inDim.cout() == 4 {
             fourDim = inDim
diff --git a/metal/paddle-mobile/paddle-mobile/Src/Program/ProgramOptimize.swift b/metal/paddle-mobile/paddle-mobile/Src/Program/ProgramOptimize.swift
index aaf1da12382072efacfbb2dd91755b8d4f36f639..8637f7683cb5bca514e1d5c3f73a80ec0f016de2 100644
--- a/metal/paddle-mobile/paddle-mobile/Src/Program/ProgramOptimize.swift
+++ b/metal/paddle-mobile/paddle-mobile/Src/Program/ProgramOptimize.swift
@@ -203,7 +203,9 @@ class ProgramOptimize<P: PrecisionProtocol> {
         var typeMapNodes: [String : [(node: Node, output: [String : Node])]] = [:]
         let block = originProgramDesc.blocks[0]
         for opDesc in block.ops {
-            print(opDesc.type)
+            if GlobalConfig.shared.debug {
+                print(opDesc.type)
+            }
             guard let opInputKeys = opInfos[opDesc.type]?.inputs, let outputKeys = opInfos[opDesc.type]?.outputs else {
                 fatalError()
             }