test(mgb/opr-mm): add io_remote test

GitOrigin-RevId: c47b6156fe671e87c698fbb3793f0b4be50a01fc

src/opr-mm/test/io_remote.cpp

@@ -59,7 +59,31 @@ const auto recv_tag = RemoteIOBase::Type::RECV;
 }  // anonymous namespace
 
 TEST(TestOprIORemote, Identity) {
+    REQUIRE_GPU(2);
+    auto cn0 = CompNode::load("gpu0");
+    auto cn1 = CompNode::load("gpu1");
+
+    HostTensorGenerator<> gen;
+    auto host_x = gen({28, 28});
+    HostTensorND host_y;
+
+    auto client = std::make_shared<MockGroupClient>();
     auto graph = ComputingGraph::make();
+
+    auto x = opr::Host2DeviceCopy::make(*graph, host_x, cn0);
+    auto xr = opr::RemoteSend::make({"x", send_tag, false}, x, client);
+    auto y = opr::RemoteRecv::make({"x", recv_tag, false}, *graph.get(),
+                                   client, {cn1}, host_x->shape(),
+                                   host_x->dtype());
+
+    auto func = graph->compile({{xr, {}}, make_callback_copy(y, host_y)});
+
+    func->execute();
+
+    MGB_ASSERT_TENSOR_EQ(*host_x, host_y);
+}
+
+TEST(TestOprIORemote, IdentityMultiThread) {
     auto cns = load_multiple_xpus(2);
     HostTensorGenerator<> gen;
     auto host_x = gen({2, 3}, cns[1]);
@@ -67,6 +91,7 @@ TEST(TestOprIORemote, Identity) {
     auto client = std::make_shared<MockGroupClient>();
 
     auto sender = [&]() {
+        auto graph = ComputingGraph::make();
         sys::set_thread_name("sender");
         auto x = opr::Host2DeviceCopy::make(*graph, host_x),
              xr = opr::RemoteSend::make({"x", send_tag, false}, x, client);