add unit test of smm

paddle/fluid/operators/math/math_function_test.cc

@@ -54,8 +54,63 @@ TEST(math_function, gemm_notrans_cblas) {
   EXPECT_EQ(input3_ptr[6], 86);
   EXPECT_EQ(input3_ptr[7], 99);
 }
+#ifdef PADDLE_WITH_LIBXSMM
+template <typename T>
+void MklSmmCompare(int m, int n, int k) {
+  paddle::framework::Tensor mat_a;
+  paddle::framework::Tensor mat_b;
+  paddle::framework::Tensor mat_c_smm;
+  paddle::framework::Tensor mat_c_mkl;
+  auto* cpu_place = new paddle::platform::CPUPlace();
+
+  T* A = mat_a.mutable_data<T>({m, k}, *cpu_place);
+  T* B = mat_b.mutable_data<T>({k, n}, *cpu_place);
+  T* CSMM = mat_c_smm.mutable_data<T>({m, n}, *cpu_place);
+  T* CMKL = mat_c_mkl.mutable_data<T>({m, n}, *cpu_place);
+  T alpha = static_cast<T>(1);
+  T beta = static_cast<T>(0);
+  for (int i = 0; i < mat_a.numel(); ++i) {
+    A[i] = static_cast<T>(i);
+  }
+  for (int i = 0; i < mat_b.numel(); ++i) {
+    B[i] = static_cast<T>(i);
+  }
+
+  auto smm = [&, m, n, k, alpha, beta]() {
+    const char transa = 'N';
+    const char transb = 'N';
+    const int lda = m;
+    const int ldb = k;
+    const int ldc = m;
+    paddle::operators::math::CBlas<T>::SMM_GEMM(&transa, &transb, &m, &n, &k,
+                                                &alpha, A, &lda, B, &ldb, &beta,
+                                                CSMM, &ldc);
+  };
+
+  auto mkl = [&, m, n, k, alpha, beta]() {
+    int lda = k;
+    int ldb = n;
+    int ldc = n;
+    paddle::operators::math::CBlas<T>::GEMM(CblasRowMajor, CblasNoTrans,
+                                            CblasNoTrans, m, n, k, alpha, A,
+                                            lda, B, ldb, beta, CMKL, ldc);
+  };
+  smm();
+  mkl();
+  ASSERT_EQ(mat_c_mkl.numel(), mat_c_smm.numel());
+  for (int i = 0; i < mat_c_mkl.numel(); ++i) {
+    EXPECT_FLOAT_EQ(CSMM[i], CMKL[i]);
+  }
+}
+TEST(math_function, gemm_mkl_vs_smm) {
+  MklSmmCompare<float>(1, 2, 3);
+  MklSmmCompare<double>(1, 2, 3);
+  MklSmmCompare<float>(3, 8, 5);
+  MklSmmCompare<double>(3, 8, 5);
+}
+#endif
 
-TEST(math_function, gemm_trans_clbas) {
+TEST(math_function, gemm_trans_cblas) {
   paddle::framework::Tensor input1;
   paddle::framework::Tensor input2;
   paddle::framework::Tensor input3;