!9256 remove gil release in gpu runtime

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

mindspore/ccsrc/backend/session/executor.cc

@@ -349,6 +349,7 @@ void Executor::RunOp(const SessionPtr &session, OpRunInfo *op_run_info, const Gr
       tensor->Wait();
     }
   }
+  mindspore::ScopedLongRunning long_running;
   SyncRunTask(task);
   *outputs = task->outputs_;
 }

mindspore/ccsrc/runtime/device/gpu/gpu_kernel_runtime.cc

@@ -16,7 +16,6 @@
 #include "runtime/device/gpu/gpu_kernel_runtime.h"
 #include <algorithm>
 #include <map>
-#include "pybind11/pybind11.h"
 #include "runtime/device/gpu/gpu_device_address.h"
 #include "runtime/device/gpu/cuda_driver.h"
 #include "runtime/device/gpu/gpu_buffer_mgr.h"
@@ -45,7 +44,6 @@
 namespace mindspore {
 namespace device {
 namespace gpu {
-namespace py = pybind11;
 using mindspore::device::memswap::MemSwapInfoSet;
 using mindspore::device::memswap::MemSwapManager;
 using mindspore::device::memswap::SwapKind;
@@ -362,7 +360,6 @@ bool GPUKernelRuntime::Run(session::KernelGraph *graph, bool is_task_sink) {
 
     ret = RunOneStep(graph);
   } else {
-    py::gil_scoped_release gil_release;
     ret = LaunchKernel(graph);
   }
   (void)gettimeofday(&end_time, nullptr);