diff --git a/.gitignore b/.gitignore
index ca4a542..074d256 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 # Custom
 _*
+outputs/
 *.log
 log/
 data/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9016ff9..c942169 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -67,6 +67,7 @@ set(gRPC_BUILD_GRPC_PYTHON_PLUGIN OFF CACHE BOOL "")
 set(gRPC_BUILD_GRPC_RUBY_PLUGIN OFF CACHE BOOL "")
 FetchContent_MakeAvailable(fmt yaml-cpp argparse pybind11 cityproto)
 
+set(Boost_USE_STATIC_LIBS ON CACHE BOOL "")
 # the CMakelists.txt of avro is in the /lang/c++/ directory
 FetchContent_Declare(
   avro
diff --git a/README.md b/README.md
index 8c9c5a9..e6a9fd6 100644
--- a/README.md
+++ b/README.md
@@ -102,7 +102,7 @@ wget -O boost_1_86_0.tar.gz https://archives.boost.io/release/1.86.0/source/boos
 tar -zxvf boost_1_86_0.tar.gz
 cd boost_1_86_0
 ./bootstrap.sh --with-libraries=filesystem,iostreams,program_options,regex,system --prefix=/usr/local  # avro dependency
-./b2 install
+./b2 cxxflags=-fPIC install
 cd ..
 rm -r boost_1_86_0
 rm boost_1_86_0.tar.gz
diff --git a/pyproject.toml b/pyproject.toml
index 33796b2..ffed66f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "python-moss"
-version = "1.2.1"
+version = "1.2.2"
 description = "MObility Simulation System"
 authors = [
   { name = "Jun Zhang", email = "zhangjun990222@gmail.com" },
diff --git a/python/before-all-manylinux.sh b/python/before-all-manylinux.sh
index ff7f8fc..ef99d40 100755
--- a/python/before-all-manylinux.sh
+++ b/python/before-all-manylinux.sh
@@ -11,7 +11,7 @@ wget -O boost_1_86_0.tar.gz https://archives.boost.io/release/1.86.0/source/boos
 tar -zxf boost_1_86_0.tar.gz
 cd boost_1_86_0
 ./bootstrap.sh --with-libraries=filesystem,iostreams,program_options,regex,system --prefix=/usr/local  # avro dependency
-./b2 install
+./b2 cxxflags=-fPIC install
 cd ..
 rm -r boost_1_86_0
 rm boost_1_86_0.tar.gz
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2bfea47..5cea916 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -58,7 +58,7 @@ target_link_libraries(moss
   PRIVATE argparse
   PRIVATE fmt
   PRIVATE yaml-cpp
-  PRIVATE avrocpp
+  PRIVATE avrocpp_s
 )
 target_compile_definitions(moss PRIVATE VERSION="build.${DATE}")
 
@@ -95,7 +95,7 @@ target_link_libraries(_moss
   PRIVATE cityproto
   PRIVATE CUDA::nvToolsExt
   PRIVATE fmt
-  PRIVATE avrocpp
+  PRIVATE avrocpp_s
 )
 target_compile_definitions(_moss PRIVATE VERSION="build.${DATE}")
 target_include_directories(_moss PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
diff --git a/src/entity/person/person.cu b/src/entity/person/person.cu
index af88d6c..a07e6af 100644
--- a/src/entity/person/person.cu
+++ b/src/entity/person/person.cu
@@ -151,7 +151,10 @@ __global__ void Prepare(Person* persons, PersonOutput* outputs, uint size,
     return;
   }
   auto& p = persons[id];
+  // write output
+  auto& o = outputs[id];
   if (!p.enable) {
+    o.status = -1;
     return;
   }
   switch (p.runtime.status) {
@@ -169,8 +172,6 @@ __global__ void Prepare(Person* persons, PersonOutput* outputs, uint size,
     } break;
   }
   p.snapshot = p.runtime;
-  // write output
-  auto& o = outputs[id];
   o.t = t;
   o.id = p.id;
   o.x = p.runtime.x;
@@ -180,6 +181,8 @@ __global__ void Prepare(Person* persons, PersonOutput* outputs, uint size,
     o.parent_id = p.runtime.aoi->id;
   } else if (p.runtime.lane) {
     o.parent_id = p.runtime.lane->id;
+  } else {
+    o.parent_id = -1;
   }
   o.direction = p.runtime.dir;
   o.status = int(p.runtime.status);
diff --git a/src/output/output.cu b/src/output/output.cu
index aafe5a0..59fad77 100644
--- a/src/output/output.cu
+++ b/src/output/output.cu
@@ -66,10 +66,10 @@ void StepOutput::Write(float t, const MArr<PersonOutput>& person_outputs,
                                                       _person_schema);
   for (const auto& person_output : person_outputs) {
     switch (person_output.status) {
-      case int(PersonStatus::DRIVING): {
+      case int32_t(PersonStatus::DRIVING): {
         veh_writer.write(person_output);
       } break;
-      case int(PersonStatus::WALKING): {
+      case int32_t(PersonStatus::WALKING): {
         ped_writer.write(person_output);
       } break;
       default: