diff --git a/paddle/CMakeLists.txt b/paddle/CMakeLists.txt
index fc33def55691eb2d6f39db1077bfc34cc8ab6af4..ccfb497d41f9a4c2776b2738fcdfd1f50b93cf0f 100644
--- a/paddle/CMakeLists.txt
+++ b/paddle/CMakeLists.txt
@@ -18,6 +18,7 @@ add_subdirectory(strings)
 find_package(Boost QUIET)
 
 add_subdirectory(platform)
+add_subdirectory(framework)
 
 # if(Boost_FOUND)
 #   include_directories(${Boost_INCLUDE_DIRS})
diff --git a/paddle/framework/ddim.cc b/paddle/framework/ddim.cc
index f32408ed53074234873ec0ea8ee7f4e449e5e908..3f949a6595ea326b97ac567daf9b35a68c8cf7f8 100644
--- a/paddle/framework/ddim.cc
+++ b/paddle/framework/ddim.cc
@@ -1,6 +1,7 @@
-#include "paddle/majel/ddim.h"
+#include "paddle/framework/ddim.h"
 
-namespace majel {
+namespace paddle {
+namespace framework {
 
 ///@cond HIDDEN
 
@@ -66,7 +67,7 @@ DDim make_ddim(const std::vector<int>& dims) {
 ///@cond HIDDEN
 // XXX For some reason, putting this in an anonymous namespace causes errors
 class DynamicMutableIndexer : public boost::static_visitor<int&> {
-public:
+ public:
   DynamicMutableIndexer(int idx) : idx_(idx) {}
 
   template <int D>
@@ -74,12 +75,12 @@ public:
     return dim[idx_];
   }
 
-private:
+ private:
   int idx_;
 };
 
 class DynamicConstIndexer : public boost::static_visitor<int> {
-public:
+ public:
   DynamicConstIndexer(int idx) : idx_(idx) {}
 
   template <int D>
@@ -87,7 +88,7 @@ public:
     return dim[idx_];
   }
 
-private:
+ private:
   int idx_;
 };
 
@@ -213,10 +214,11 @@ struct DDimPrinter : boost::static_visitor<void> {
 
 ///\endcond
 
-std::ostream& operator<<(std::ostream& os, const majel::DDim& ddim) {
+std::ostream& operator<<(std::ostream& os, const DDim& ddim) {
   DDimPrinter printer(os);
   boost::apply_visitor(printer, ddim);
   return os;
 }
 
-}  // namespace majel
+}  // namespace framework
+}  // namespace paddle
diff --git a/paddle/framework/ddim.h b/paddle/framework/ddim.h
index 7be756f8c098ba5aa3a5ff4380c90f4b90a55bb7..223c4180bee45e21547364441476b27051daca56 100644
--- a/paddle/framework/ddim.h
+++ b/paddle/framework/ddim.h
@@ -5,20 +5,14 @@
 #include <stdexcept>
 #include <vector>
 
-#include "paddle/majel/dim.h"
+#include "paddle/framework/dim.h"
 
-namespace majel {
+namespace paddle {
+namespace framework {
 
 namespace {
-typedef boost::variant<Dim<1>,
-                       Dim<2>,
-                       Dim<3>,
-                       Dim<4>,
-                       Dim<5>,
-                       Dim<6>,
-                       Dim<7>,
-                       Dim<8>,
-                       Dim<9>>
+typedef boost::variant<Dim<1>, Dim<2>, Dim<3>, Dim<4>, Dim<5>, Dim<6>, Dim<7>,
+                       Dim<8>, Dim<9>>
     DDimVar;
 }
 
@@ -95,14 +89,15 @@ ssize_t product(const DDim& ddim);
 
 int arity(const DDim& ddim);
 
-std::ostream& operator<<(std::ostream&, const majel::DDim&);
+std::ostream& operator<<(std::ostream&, const DDim&);
 
-}  // namespace majel
+}  // namespace framework
+}  // namespace paddle
 
 namespace boost {
 
 template <typename T>
-T get(const majel::DDim& in) {
+T get(const paddle::framework::DDim& in) {
   return boost::get<T>(in.var);
 }
 
diff --git a/paddle/framework/ddim_test.cc b/paddle/framework/ddim_test.cc
index a5b8a7c4d26740c1c4169547e76a0cf5558facc0..e5c84d7abe9d476f285c8c5cd904d2e570eb0e4f 100644
--- a/paddle/framework/ddim_test.cc
+++ b/paddle/framework/ddim_test.cc
@@ -4,18 +4,18 @@
 #include <vector>
 
 #include "gtest/gtest.h"
-#include "paddle/majel/ddim.h"
+#include "paddle/framework/ddim.h"
 
 TEST(DDim, Equality) {
   // construct a DDim from an initialization list
-  majel::DDim ddim = majel::make_ddim({9, 1, 5});
+  paddle::framework::DDim ddim = paddle::framework::make_ddim({9, 1, 5});
   EXPECT_EQ(ddim[0], 9);
   EXPECT_EQ(ddim[1], 1);
   EXPECT_EQ(ddim[2], 5);
 
   // construct a DDim from a vector
   std::vector<int> vec({9, 1, 5});
-  majel::DDim vddim = majel::make_ddim(vec);
+  paddle::framework::DDim vddim = paddle::framework::make_ddim(vec);
   EXPECT_EQ(ddim[0], 9);
   EXPECT_EQ(ddim[1], 1);
   EXPECT_EQ(ddim[2], 5);
@@ -23,43 +23,43 @@ TEST(DDim, Equality) {
   // mutate a DDim
   ddim[1] = 2;
   EXPECT_EQ(ddim[1], 2);
-  majel::set(ddim, 0, 6);
-  EXPECT_EQ(majel::get(ddim, 0), 6);
+  paddle::framework::set(ddim, 0, 6);
+  EXPECT_EQ(paddle::framework::get(ddim, 0), 6);
 
   // vectorize a DDim
-  std::vector<int> res_vec = majel::vectorize(vddim);
+  std::vector<int> res_vec = paddle::framework::vectorize(vddim);
   EXPECT_EQ(res_vec[0], 9);
   EXPECT_EQ(res_vec[1], 1);
   EXPECT_EQ(res_vec[2], 5);
-  majel::Dim<3> d(3, 2, 1);
-  res_vec = majel::vectorize(majel::DDim(d));
+  paddle::framework::Dim<3> d(3, 2, 1);
+  res_vec = paddle::framework::vectorize(paddle::framework::DDim(d));
   EXPECT_EQ(res_vec[0], 3);
   EXPECT_EQ(res_vec[1], 2);
   EXPECT_EQ(res_vec[2], 1);
 
   // add two DDims
-  majel::DDim ddim_sum = ddim + vddim;
+  paddle::framework::DDim ddim_sum = ddim + vddim;
   EXPECT_EQ(ddim_sum[0], 15);
   EXPECT_EQ(ddim_sum[1], 3);
   EXPECT_EQ(ddim_sum[2], 10);
 
   // multiply two DDims
-  majel::DDim ddim_mul = ddim * vddim;
+  paddle::framework::DDim ddim_mul = ddim * vddim;
   EXPECT_EQ(ddim_mul[0], 54);
   EXPECT_EQ(ddim_mul[1], 2);
   EXPECT_EQ(ddim_mul[2], 25);
 
   // arity of a DDim
-  EXPECT_EQ(majel::arity(ddim), 3);
+  EXPECT_EQ(paddle::framework::arity(ddim), 3);
 
   // product of a DDim
-  EXPECT_EQ(majel::product(vddim), 45);
+  EXPECT_EQ(paddle::framework::product(vddim), 45);
 }
 
 TEST(DDim, Print) {
   // print a DDim
   std::stringstream ss;
-  majel::DDim ddim = majel::make_ddim({2, 3, 4});
+  paddle::framework::DDim ddim = paddle::framework::make_ddim({2, 3, 4});
   ss << ddim;
   EXPECT_EQ("2, 3, 4", ss.str());
 }
diff --git a/paddle/framework/dim.h b/paddle/framework/dim.h
index c4b0c6aea683384d4657dd5db6f419b9e1108704..bcde291d12d429a3f2cd41fa6d0ee606c7c9c92f 100644
--- a/paddle/framework/dim.h
+++ b/paddle/framework/dim.h
@@ -5,10 +5,11 @@
 #include <stdexcept>
 #include <type_traits>
 
-#include "paddle/majel/detail/cuda_assert.h"
-#include "paddle/majel/detail/hostdevice.h"
+#include "paddle/platform/assert.h"
+#include "paddle/platform/hostdevice.h"
 
-namespace majel {
+namespace paddle {
+namespace framework {
 
 // Statically sized, statically indexed dimension
 template <int i>
@@ -74,7 +75,7 @@ struct Dim<1> {
       throw std::invalid_argument("Index out of range.");
     }
 #else
-    MAJEL_ASSERT(idx < size.head);
+    PADDLE_ASSERT(idx < size.head);
 #endif
   }
 
@@ -131,7 +132,7 @@ HOSTDEVICE int& indexer(Dim<D>& dim, int idx) {
     throw std::invalid_argument("Tried to access a negative dimension");
   }
 #else
-  MAJEL_ASSERT(idx >= 0);
+  PADDLE_ASSERT(idx >= 0);
 #endif
   if (idx == 0) {
     return dim.head;
@@ -146,7 +147,7 @@ HOSTDEVICE int& indexer<1>(Dim<1>& dim, int idx) {
     throw std::invalid_argument("Invalid index");
   }
 #else
-  MAJEL_ASSERT(idx == 0);
+  PADDLE_ASSERT(idx == 0);
 #endif
   return dim.head;
 }
@@ -158,7 +159,7 @@ HOSTDEVICE int indexer(const Dim<D>& dim, int idx) {
     throw std::invalid_argument("Tried to access a negative dimension");
   }
 #else
-  MAJEL_ASSERT(idx >= 0);
+  PADDLE_ASSERT(idx >= 0);
 #endif
   if (idx == 0) {
     return dim.head;
@@ -173,7 +174,7 @@ HOSTDEVICE int indexer<1>(const Dim<1>& dim, int idx) {
     throw std::invalid_argument("Invalid index");
   }
 #else
-  MAJEL_ASSERT(idx == 0);
+  PADDLE_ASSERT(idx == 0);
 #endif
   return dim.head;
 }
@@ -411,7 +412,7 @@ HOSTDEVICE Dim<sizeof...(Args)> make_dim(Args... idxes) {
 // XXX For some reason, overloading fails to resolve this correctly
 template <int i>
 typename std::enable_if<(i > 1), std::ostream&>::type operator<<(
-    std::ostream& os, const majel::Dim<i>& d) {
+    std::ostream& os, const Dim<i>& d) {
   os << d.head << ", " << d.tail;
   return os;
 }
@@ -420,7 +421,7 @@ typename std::enable_if<(i > 1), std::ostream&>::type operator<<(
 // XXX I wish this could be an overload instead of a template
 template <int i>
 typename std::enable_if<(i == 1), std::ostream&>::type operator<<(
-    std::ostream& os, const majel::Dim<i>& d) {
+    std::ostream& os, const Dim<i>& d) {
   os << d.head;
   return os;
 }
@@ -448,4 +449,5 @@ HOSTDEVICE Dim<D> linear_to_dimension(int linear_index, Dim<D> extents) {
   return result;
 }
 
-}  // namespace majel
+}  // namespace framework
+}  // namespace paddle
diff --git a/paddle/framework/dim_test.cu b/paddle/framework/dim_test.cu
index a7d81e595bea7fa6326ea350e2702e1ef8f5caa4..809bf04826637195425a32c054c94e00ef940df9 100644
--- a/paddle/framework/dim_test.cu
+++ b/paddle/framework/dim_test.cu
@@ -1,49 +1,49 @@
 #include <thrust/device_vector.h>
 #include <sstream>
 
-#include "paddle/majel/dim.h"
+#include "paddle/framework/dim.h"
 #include "gtest/gtest.h"
 
-__global__ void test(majel::Dim<2>* o) {
-    o[0] = majel::make_dim(5, 6);
+__global__ void test(paddle::framework::Dim<2>* o) {
+    o[0] = paddle::framework::make_dim(5, 6);
 }
 
 __global__ void dyn_idx_gpu(int* o) {
-    auto d = majel::make_dim(5, 6);
+    auto d = paddle::framework::make_dim(5, 6);
     o[0] = d[1];
 }
 
 TEST(Dim, Equality) {
     // construct a Dim on the CPU
-    auto a = majel::make_dim(3, 4);
-    EXPECT_EQ(majel::get<0>(a), 3);
-    EXPECT_EQ(majel::get<1>(a), 4);
+    auto a = paddle::framework::make_dim(3, 4);
+    EXPECT_EQ(paddle::framework::get<0>(a), 3);
+    EXPECT_EQ(paddle::framework::get<1>(a), 4);
 
     // construct a Dim on the GPU
-    thrust::device_vector<majel::Dim<2>> t(2);
+    thrust::device_vector<paddle::framework::Dim<2>> t(2);
     test<<<1,1>>>(thrust::raw_pointer_cast(t.data()));
     a = t[0];
-    EXPECT_EQ(majel::get<0>(a), 5);
-    EXPECT_EQ(majel::get<1>(a), 6);
+    EXPECT_EQ(paddle::framework::get<0>(a), 5);
+    EXPECT_EQ(paddle::framework::get<1>(a), 6);
 
     // linearization
-    auto b = majel::make_dim(7, 8);
-    EXPECT_EQ(majel::linearize(a, b), 83);
+    auto b = paddle::framework::make_dim(7, 8);
+    EXPECT_EQ(paddle::framework::linearize(a, b), 83);
 
     // product
-    EXPECT_EQ(majel::product(a), 30);
+    EXPECT_EQ(paddle::framework::product(a), 30);
 
     // mutate a Dim
-    majel::get<1>(b) = 10;
-    EXPECT_EQ(majel::get<0>(b), 7);
-    EXPECT_EQ(majel::get<1>(b), 10);
+    paddle::framework::get<1>(b) = 10;
+    EXPECT_EQ(paddle::framework::get<0>(b), 7);
+    EXPECT_EQ(paddle::framework::get<1>(b), 10);
 
     // dynamic access
-    majel::get(b, 0) = 8;
+    paddle::framework::get(b, 0) = 8;
     b[1] = 11;
-    EXPECT_EQ(majel::get<0>(b), 8);
-    EXPECT_EQ(majel::get<1>(b), 11);
-    EXPECT_EQ(majel::get(b, 0), 8);
+    EXPECT_EQ(paddle::framework::get<0>(b), 8);
+    EXPECT_EQ(paddle::framework::get<1>(b), 11);
+    EXPECT_EQ(paddle::framework::get(b, 0), 8);
     EXPECT_EQ(b[1], 11);
 
     // dynamic access on GPU
@@ -53,49 +53,49 @@ TEST(Dim, Equality) {
     EXPECT_EQ(res, 6);
 
     // ex_prefix_mul
-    majel::Dim<3> c = majel::ex_prefix_mul(majel::Dim<3>(3, 4, 5));
-    EXPECT_EQ(majel::get<0>(c), 1);
-    EXPECT_EQ(majel::get<1>(c), 3);
-    EXPECT_EQ(majel::get<2>(c), 12);
+    paddle::framework::Dim<3> c = paddle::framework::ex_prefix_mul(paddle::framework::Dim<3>(3, 4, 5));
+    EXPECT_EQ(paddle::framework::get<0>(c), 1);
+    EXPECT_EQ(paddle::framework::get<1>(c), 3);
+    EXPECT_EQ(paddle::framework::get<2>(c), 12);
 
     // contiguous_strides
-    c = majel::contiguous_strides(majel::Dim<3>(10, 1, 10));
-    EXPECT_EQ(majel::get<0>(c), 1);
-    EXPECT_EQ(majel::get<1>(c), 0);
-    EXPECT_EQ(majel::get<2>(c), 10);
-    c = majel::contiguous_strides(majel::Dim<3>(10, 10, 1));
-    EXPECT_EQ(majel::get<0>(c), 1);
-    EXPECT_EQ(majel::get<1>(c), 10);
-    EXPECT_EQ(majel::get<2>(c), 0);
-    c = majel::contiguous_strides(majel::Dim<3>(1, 10, 10));
-    EXPECT_EQ(majel::get<0>(c), 0);
-    EXPECT_EQ(majel::get<1>(c), 1);
-    EXPECT_EQ(majel::get<2>(c), 10);
-    c = majel::contiguous_strides(majel::Dim<3>(2, 3, 4));
-    EXPECT_EQ(majel::get<0>(c), 1);
-    EXPECT_EQ(majel::get<1>(c), 2);
-    EXPECT_EQ(majel::get<2>(c), 6);
+    c = paddle::framework::contiguous_strides(paddle::framework::Dim<3>(10, 1, 10));
+    EXPECT_EQ(paddle::framework::get<0>(c), 1);
+    EXPECT_EQ(paddle::framework::get<1>(c), 0);
+    EXPECT_EQ(paddle::framework::get<2>(c), 10);
+    c = paddle::framework::contiguous_strides(paddle::framework::Dim<3>(10, 10, 1));
+    EXPECT_EQ(paddle::framework::get<0>(c), 1);
+    EXPECT_EQ(paddle::framework::get<1>(c), 10);
+    EXPECT_EQ(paddle::framework::get<2>(c), 0);
+    c = paddle::framework::contiguous_strides(paddle::framework::Dim<3>(1, 10, 10));
+    EXPECT_EQ(paddle::framework::get<0>(c), 0);
+    EXPECT_EQ(paddle::framework::get<1>(c), 1);
+    EXPECT_EQ(paddle::framework::get<2>(c), 10);
+    c = paddle::framework::contiguous_strides(paddle::framework::Dim<3>(2, 3, 4));
+    EXPECT_EQ(paddle::framework::get<0>(c), 1);
+    EXPECT_EQ(paddle::framework::get<1>(c), 2);
+    EXPECT_EQ(paddle::framework::get<2>(c), 6);
 
     // generate from an index
-    auto size = majel::make_dim(4, 5, 2);
-    c = majel::Dim<3>(14, size);
-    EXPECT_EQ(majel::get<0>(c), 2);
-    EXPECT_EQ(majel::get<1>(c), 3);
-    EXPECT_EQ(majel::get<2>(c), 0);
-    c = majel::Dim<3>(25, size);
-    EXPECT_EQ(majel::get<0>(c), 1);
-    EXPECT_EQ(majel::get<1>(c), 1);
-    EXPECT_EQ(majel::get<2>(c), 1);
+    auto size = paddle::framework::make_dim(4, 5, 2);
+    c = paddle::framework::Dim<3>(14, size);
+    EXPECT_EQ(paddle::framework::get<0>(c), 2);
+    EXPECT_EQ(paddle::framework::get<1>(c), 3);
+    EXPECT_EQ(paddle::framework::get<2>(c), 0);
+    c = paddle::framework::Dim<3>(25, size);
+    EXPECT_EQ(paddle::framework::get<0>(c), 1);
+    EXPECT_EQ(paddle::framework::get<1>(c), 1);
+    EXPECT_EQ(paddle::framework::get<2>(c), 1);
 }
 
 TEST(Dim, Bool) {
-    auto a = majel::make_dim(3, 4);
-    auto b = majel::make_dim(5, 6);
-    auto c = majel::make_dim(3, 4);
+    auto a = paddle::framework::make_dim(3, 4);
+    auto b = paddle::framework::make_dim(5, 6);
+    auto c = paddle::framework::make_dim(3, 4);
 
     // in_bounds check
-    EXPECT_TRUE(majel::contained(a, b));
-    EXPECT_FALSE(majel::contained(b, a));
+    EXPECT_TRUE(paddle::framework::contained(a, b));
+    EXPECT_FALSE(paddle::framework::contained(b, a));
 
     // comparison
     EXPECT_TRUE(a == a);
@@ -104,25 +104,25 @@ TEST(Dim, Bool) {
 
     // contiguous check
     int x = 4, y = 5, z = 2;
-    majel::Dim<3> sizef(x, y, z);
-    majel::Dim<3> stridea(1, x, x*y);
-    majel::Dim<3> strideb(2, 2*x, 2*x*y);
-    majel::Dim<3> stridec(1, x, 2*x*y);
-    EXPECT_TRUE(majel::contiguous(sizef, stridea));
-    EXPECT_FALSE(majel::contiguous(sizef, strideb));
-    EXPECT_FALSE(majel::contiguous(sizef, stridec));
+    paddle::framework::Dim<3> sizef(x, y, z);
+    paddle::framework::Dim<3> stridea(1, x, x*y);
+    paddle::framework::Dim<3> strideb(2, 2*x, 2*x*y);
+    paddle::framework::Dim<3> stridec(1, x, 2*x*y);
+    EXPECT_TRUE(paddle::framework::contiguous(sizef, stridea));
+    EXPECT_FALSE(paddle::framework::contiguous(sizef, strideb));
+    EXPECT_FALSE(paddle::framework::contiguous(sizef, stridec));
 }
 
 TEST(Dim, Print) {
     {
         std::stringstream ss;
-        auto a = majel::make_dim(2, 3);
+        auto a = paddle::framework::make_dim(2, 3);
         ss << a;
         EXPECT_EQ(ss.str(), "2, 3");
     }
     {
         std::stringstream ss;
-        ss << majel::make_dim(8);
+        ss << paddle::framework::make_dim(8);
         EXPECT_EQ(ss.str(), "8");
     }
 }
diff --git a/paddle/platform/assert.h b/paddle/platform/assert.h
index 9490d0ae3eff01bdb4403de710b7bfd878e87f03..70d3bf75062c5471ab54ee2c4c7637c679d9a8a3 100644
--- a/paddle/platform/assert.h
+++ b/paddle/platform/assert.h
@@ -5,28 +5,25 @@
 
 #if defined(__APPLE__) && defined(__CUDA_ARCH__) && !defined(NDEBUG)
 #include <stdio.h>
-#define MAJEL_ASSERT(e)                                                       \
-  do {                                                                        \
-    if (!(e)) {                                                               \
-      printf(                                                                 \
-          "%s:%d Assertion `%s` failed.\n", __FILE__, __LINE__, TOSTRING(e)); \
-      asm("trap;");                                                           \
-    }                                                                         \
+#define PADDLE_ASSERT(e)                                           \
+  do {                                                             \
+    if (!(e)) {                                                    \
+      printf("%s:%d Assertion `%s` failed.\n", __FILE__, __LINE__, \
+             TOSTRING(e));                                         \
+      asm("trap;");                                                \
+    }                                                              \
   } while (0)
 
-#define MAJEL_ASSERT_MSG(e, m)                      \
-  do {                                              \
-    if (!(e)) {                                     \
-      printf("%s:%d Assertion `%s` failed (%s).\n", \
-             __FILE__,                              \
-             __LINE__,                              \
-             TOSTRING(e),                           \
-             m);                                    \
-      asm("trap;");                                 \
-    }                                               \
+#define PADDLE_ASSERT_MSG(e, m)                                         \
+  do {                                                                  \
+    if (!(e)) {                                                         \
+      printf("%s:%d Assertion `%s` failed (%s).\n", __FILE__, __LINE__, \
+             TOSTRING(e), m);                                           \
+      asm("trap;");                                                     \
+    }                                                                   \
   } while (0)
 #else
 #include <assert.h>
-#define MAJEL_ASSERT(e) assert(e)
-#define MAJEL_ASSERT_MSG(e, m) assert((e) && (m))
+#define PADDLE_ASSERT(e) assert(e)
+#define PADDLE_ASSERT_MSG(e, m) assert((e) && (m))
 #endif