fix typo and op test

paddle/fluid/operators/fusion_seqexpand_concat_fc_op.cc

@@ -63,7 +63,7 @@ void FusionSeqExpandConcatFCOp::InferShape(
 framework::OpKernelType FusionSeqExpandConcatFCOp::GetExpectedKernelType(
     const framework::ExecutionContext& ctx) const {
   return framework::OpKernelType(
-      framework::ToDataType(ctx.Input<framework::LoDTensor>("X")->type()),
+      framework::ToDataType(ctx.MultiInput<LoDTensor>("X")[0]->type()),
       ctx.device_context());
 }
 
@@ -113,7 +113,7 @@ class FusionSeqExpandConcatFCOpKernel : public framework::OpKernel<T> {
     auto* w = ctx.Input<Tensor>("FCWeight");
     auto* b = ctx.Input<Tensor>("FCBias");
     auto* out = ctx.Output<LoDTensor>("Out");
-    auto* fc_out = ctx.Output<Tensor>("FCOUT");
+    auto* fc_out = ctx.Output<Tensor>("FCOut");
 
     auto* ref_in = ins[0];
     auto ref_lod = ref_in->lod();
@@ -164,7 +164,7 @@ class FusionSeqExpandConcatFCOpKernel : public framework::OpKernel<T> {
     math::FCCompute<DeviceContext, T>(blas, total_T, D, M0, ref_in_data, w_data,
                                       out_data, b ? b->data<T>() : NULL);
     w_data = w_data + M0 * D;
-    // first one use write on
+    // first write on
     blas.MatMul(N, D, M1, in1_data, w_data, fc_out_data);
     w_data = w_data + M1 * D;
     for (size_t i = 2; i < ins.size(); ++i) {
@@ -175,16 +175,15 @@ class FusionSeqExpandConcatFCOpKernel : public framework::OpKernel<T> {
                 K, w_data, D, static_cast<T>(1), fc_out_data, D);
       w_data = w_data + K * D;
     }
-
+    T* cur_out_data = out_data;
     for (int i = 0; i < N; ++i) {
       int seq_len = ref_lod[0][i + 1] - ref_lod[0][i];
       T* src = fc_out_data + i * D;
       for (int step = 0; step < seq_len; ++step) {
-        blas.VADD(D, out_data, src, out_data);
-        out_data = out_data + D;
+        blas.VADD(D, cur_out_data, src, cur_out_data);
+        cur_out_data = cur_out_data + D;
       }
     }
-
     fc_act(total_T * D, out_data, out_data);
   }
 };

python/paddle/fluid/tests/unittests/test_fusion_seqexpand_concat_fc_op.py

@@ -80,16 +80,16 @@ class TestFusionSeqExpandConcatFCOp(OpTest):
         out = fusion_seqexpand_concat_fc(xs, self.lod, w, b,
                                          ACTIVATION[self.fc_act])
 
-        self.inputs = {'X': [(x0, self.lod)], 'FCWeight': w}
-        normal_lod = [i for i in range(bs + 1)]
+        self.inputs = {'X': [('x0', (x0, self.lod))], 'FCWeight': w}
+        normal_lod = [[1] * bs]
         for i in range(num_inputs - 1):
-            self.inputs['X'].append((xs[i + 1], normal_lod))
+            self.inputs['X'].append(('x%d' % (i + 1), (xs[i + 1], normal_lod)))
 
         if self.with_bias:
             self.inputs['FCBias'] = b
 
         self.outputs = {'Out': (out, self.lod)}
-        self.attrs = {'fc_activation': self.fc_act, }
+        self.attrs = {'fc_activation': self.fc_act}
 
     def test_check_output(self):
         self.check_output()