Fix bug

test=develop

paddle/fluid/operators/optimizers/adam_op.h

@@ -279,26 +279,42 @@ struct SparseAdamFunctor<T, CPUAdam> {
     T beta1_pow = *beta1_pow_;
     T beta2_pow = *beta2_pow_;
     lr *= sqrt(1 - beta2_pow) / (1 - beta1_pow);
-    for (size_t i = 0U, j = 0U; i != numel; ++i) {
-      T mom1 = moment1_[i];
-      T mom2 = moment2_[i];
-      T p = param_[i];
+    size_t row_count = numel / row_numel_;
 
-      // Calculation
+    for (size_t i = 0U, j = 0U; i != row_count; ++i) {
       if (i == *(rows_ + j)) {
-        T g = grad_[j * row_numel_];
-        mom1 = beta1_ * mom1 + (1 - beta1_) * g;
-        mom2 = beta2_ * mom2 + (1 - beta2_) * g * g;
+        for (size_t k = 0U; k != row_numel_; ++k) {
+          T mom1 = moment1_[i * row_numel_ + k];
+          T mom2 = moment2_[i * row_numel_ + k];
+          T p = param_[i * row_numel_ + k];
+
+          T g = grad_[j * row_numel_ + k];
+          mom1 = beta1_ * mom1 + (1 - beta1_) * g;
+          mom2 = beta2_ * mom2 + (1 - beta2_) * g * g;
+
+          p -= lr * (mom1 / (sqrt(mom2) + epsilon_));
+          // Write back to global memory
+          moment1_out_[i * row_numel_ + k] = mom1;
+          moment2_out_[i * row_numel_ + k] = mom2;
+          param_out_[i * row_numel_ + k] = p;
+        }
         ++j;
       } else {
-        mom1 = beta1_ * mom1;
-        mom2 = beta2_ * mom2;
+        for (size_t k = 0U; k != row_numel_; ++k) {
+          T mom1 = moment1_[i * row_numel_ + k];
+          T mom2 = moment2_[i * row_numel_ + k];
+          T p = param_[i * row_numel_ + k];
+
+          mom1 = beta1_ * mom1;
+          mom2 = beta2_ * mom2;
+
+          p -= lr * (mom1 / (sqrt(mom2) + epsilon_));
+          // Write back to global memory
+          moment1_out_[i * row_numel_ + k] = mom1;
+          moment2_out_[i * row_numel_ + k] = mom2;
+          param_out_[i * row_numel_ + k] = p;
+        }
       }
-      p -= lr * (mom1 / (sqrt(mom2) + epsilon_));
-      // Write back to global memory
-      moment1_out_[i] = mom1;
-      moment2_out_[i] = mom2;
-      param_out_[i] = p;
     }
   }
 };