!8601 independent node use the somas's memory

From: @laiyongqiang
Reviewed-by: @kisnwang,@jjfeing
Signed-off-by: @jjfeing

mindspore/ccsrc/backend/optimizer/somas/somas.cc

@@ -301,7 +301,7 @@ void Somas::IndependentNodeOutputProcess(const session::KernelGraph *graph) {
       auto semi_reuse_output_tensors = iter->second->output_tensors_;
       for (auto &tensor : semi_reuse_output_tensors) {
         total_size += tensor->GetAlignedSize();
-        tensor->aligned_size_ = 0;
+        tensor->lifelong_value_ = kLifeLongGraphAll;
       }
     }
   }

mindspore/ccsrc/runtime/device/kernel_runtime.cc

@@ -543,7 +543,7 @@ void KernelRuntime::AssignNodeOutputMem(MemType type, const AnfNodePtr &node, in
 
   if (node->isa<CNode>()) {
     bool independent = AnfAlgo::IsIndependentNode(node->cast<CNodePtr>());
-    if (independent && (type == kReuseDynamicMem || type == kSomasReuseDynamicMem)) {
+    if (independent && (type == kReuseDynamicMem)) {
       MS_LOG(INFO) << "Independent node " << node->fullname_with_scope() << " disable memory reuse";
       type = kDynamicMem;
     }