diff --git a/CMakeLists.txt b/CMakeLists.txt
index 944ba06..af4a5db 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -120,14 +120,16 @@ endif()
 option(BUILD_SHARED_LIBS "Build with shared libraries." ON)
 option(RECORDER_ENABLE_PARQUET "Build Parquet format converter." OFF)
 option(RECORDER_ENABLE_POSIX_TRACE "Enable tracing of POSIX calls." ON)
-option(RECORDER_ENABLE_MPIO_TRACE "Enable tracing of MPI-IO calls." ON)
+option(RECORDER_ENABLE_MPI_TRACE "Enable tracing of MPI communication calls." ON)
+option(RECORDER_ENABLE_MPIIO_TRACE "Enable tracing of MPI-IO calls." ON)
 option(RECORDER_ENABLE_HDF5_TRACE "Enable tracing of HDF5 calls." ON)
 option(RECORDER_ENABLE_CUDA_TRACE "Enable tracing of CUDA kernels." OFF)
 option(RECORDER_ENABLE_FCNTL_TRACE "Enable tracing of fcntl()." ON)
 option(RECORDER_INSTALL_TESTS "Enable installation of tests." OFF)
 
 #mark_as_advanced(RECORDER_ENABLE_POSIX_TRACE)
-#mark_as_advanced(RECORDER_ENABLE_MPIO_TRACE)
+#mark_as_advanced(RECORDER_ENABLE_MPI_TRACE)
+#mark_as_advanced(RECORDER_ENABLE_MPIIO_TRACE)
 #mark_as_advanced(RECORDER_ENABLE_HDF5_TRACE)
 #mark_as_advanced(RECORDER_ENABLE_FCNTL_TRACE)
 
diff --git a/README.md b/README.md
index 6d1adff..018f4e7 100644
--- a/README.md
+++ b/README.md
@@ -54,9 +54,10 @@ cmake ..                                                          \
 
 (2) Enable/disable tracing levels
 
-By default, Recorde traces function calls from all levels: HDF5, MPI and POSIX. The following options can be used to enable/disable specific levels.
+By default, Recorde traces function calls from all levels: HDF5, MPI, MPI-IO and POSIX. The following options can be used to enable/disable specific levels.
  * -DRECORDER_ENABLE_POSIX_TRACE=[ON|FF]
- * -DRECORDER_ENABLE_MPIO_TRACE=[ON|FF]
+ * -DRECORDER_ENABLE_MPI_TRACE=[ON|FF]
+ * -DRECORDER_ENABLE_MPIIO_TRACE=[ON|FF]
  * -DRECORDER_ENABLE_HDF5_TRACE=[ON|FF]
 
 (3) Intercepting `fcntl()` call: 
diff --git a/include/recorder.h b/include/recorder.h
index 0bd74b0..422c347 100644
--- a/include/recorder.h
+++ b/include/recorder.h
@@ -122,16 +122,22 @@ void write_record(Record* record);
  * Decide wether to intercept (override) funciton calls
  */
 #ifdef RECORDER_PRELOAD
-    #ifdef RECORDER_ENABLE_MPIO_TRACE
+    #ifdef RECORDER_ENABLE_POSIX_TRACE
+        #define RECORDER_POSIX_DECL(func) func
+    #else
+        #define RECORDER_POSIX_DECL(func) __warp_##func
+    #endif
+
+    #ifdef RECORDER_ENABLE_MPI_TRACE
         #define RECORDER_MPI_DECL(func) func
     #else
         #define RECORDER_MPI_DECL(func) __warp_##func
     #endif
 
-    #ifdef RECORDER_ENABLE_POSIX_TRACE
-        #define RECORDER_POSIX_DECL(func) func
+    #ifdef RECORDER_ENABLE_MPIIO_TRACE
+        #define RECORDER_MPIIO_DECL(func) func
     #else
-        #define RECORDER_POSIX_DECL(func) __warp_##func
+        #define RECORDER_MPIIO_DECL(func) __warp_##func
     #endif
 
     #ifdef RECORDER_ENABLE_HDF5_TRACE
@@ -140,8 +146,9 @@ void write_record(Record* record);
         #define RECORDER_HDF5_DECL(func) __warp_##func
     #endif
 #else
-    #define RECORDER_MPI_DECL(func) func
     #define RECORDER_POSIX_DECL(func) func
+    #define RECORDER_MPI_DECL(func) func
+    #define RECORDER_MPIIO_DECL(func) func
     #define RECORDER_HDF5_DECL(func) func
 #endif
 
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index e00e719..719519b 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -108,7 +108,8 @@ target_compile_definitions(recorder
         PUBLIC _LARGEFILE64_SOURCE
         PUBLIC RECORDER_PRELOAD
         PRIVATE $<$<BOOL:${RECORDER_ENABLE_POSIX_TRACE}>:RECORDER_ENABLE_POSIX_TRACE>
-        PRIVATE $<$<BOOL:${RECORDER_ENABLE_MPIO_TRACE}>:RECORDER_ENABLE_MPIO_TRACE>
+        PRIVATE $<$<BOOL:${RECORDER_ENABLE_MPI_TRACE}>:RECORDER_ENABLE_MPI_TRACE>
+        PRIVATE $<$<BOOL:${RECORDER_ENABLE_MPIIO_TRACE}>:RECORDER_ENABLE_MPIIO_TRACE>
         PRIVATE $<$<BOOL:${RECORDER_ENABLE_HDF5_TRACE}>:RECORDER_ENABLE_HDF5_TRACE>
         PRIVATE $<$<BOOL:${RECORDER_ENABLE_FCNTL_TRACE}>:RECORDER_ENABLE_FCNTL_TRACE>
         PRIVATE $<$<BOOL:${RECORDER_ENABLE_CUDA_TRACE}>:RECORDER_ENABLE_CUDA_TRACE>
diff --git a/lib/recorder-mpi.c b/lib/recorder-mpi.c
index d54eedd..bd00998 100644
--- a/lib/recorder-mpi.c
+++ b/lib/recorder-mpi.c
@@ -352,14 +352,14 @@ int RECORDER_MPI_DECL(MPI_Type_commit)(MPI_Datatype *datatype) {
     RECORDER_INTERCEPTOR(1, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_open)(MPI_Comm comm, CONST char *filename, int amode, MPI_Info info, MPI_File *fh) {
+int RECORDER_MPIIO_DECL(MPI_File_open)(MPI_Comm comm, CONST char *filename, int amode, MPI_Info info, MPI_File *fh) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_open, (comm, filename, amode, info, fh));
     add_mpi_file(comm, fh);
     char **args = assemble_args_list(5, comm2name(&comm), realrealpath(filename), itoa(amode), ptoa(&info), file2id(fh));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_close)(MPI_File *fh) {
+int RECORDER_MPIIO_DECL(MPI_File_close)(MPI_File *fh) {
     char* fid = file2id(fh);
     MPIFileHash *entry = NULL;
     HASH_FIND(hh, mpi_file_table, fh, sizeof(MPI_File), entry);
@@ -375,182 +375,200 @@ int RECORDER_MPI_DECL(MPI_File_close)(MPI_File *fh) {
     RECORDER_INTERCEPTOR(1, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_sync)(MPI_File fh) {
+int RECORDER_MPIIO_DECL(MPI_File_sync)(MPI_File fh) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_sync, (fh));
     char **args = assemble_args_list(1, file2id(&fh));
     RECORDER_INTERCEPTOR(1, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_set_size)(MPI_File fh, MPI_Offset size) {
+int RECORDER_MPIIO_DECL(MPI_File_set_size)(MPI_File fh, MPI_Offset size) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_set_size, (fh, size));
     char **args = assemble_args_list(2, file2id(&fh), itoa(size));
     RECORDER_INTERCEPTOR(2, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_set_view)(MPI_File fh, MPI_Offset disp, MPI_Datatype etype,
+int RECORDER_MPIIO_DECL(MPI_File_set_view)(MPI_File fh, MPI_Offset disp, MPI_Datatype etype,
         MPI_Datatype filetype, CONST char *datarep, MPI_Info info) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_set_view, (fh, disp, etype, filetype, datarep, info));
     char **args = assemble_args_list(6, file2id(&fh), itoa(disp), type2name(etype), type2name(filetype), ptoa(datarep), ptoa(&info));
     RECORDER_INTERCEPTOR(6, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
+int RECORDER_MPIIO_DECL(MPI_File_read)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_at)(MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
+int RECORDER_MPIIO_DECL(MPI_File_read_at)(MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_at, (fh, offset, buf, count, datatype, status));
     char **args = assemble_args_list(6, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(6, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_at_all)(MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
+int RECORDER_MPIIO_DECL(MPI_File_read_at_all)(MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_at_all, (fh, offset, buf, count, datatype, status));
     char **args = assemble_args_list(6, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(6, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_all)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
+int RECORDER_MPIIO_DECL(MPI_File_read_all)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_all, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_shared)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
+int RECORDER_MPIIO_DECL(MPI_File_read_shared)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_shared, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_ordered)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
+int RECORDER_MPIIO_DECL(MPI_File_read_ordered)(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_ordered, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_at_all_begin)(MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype) {
+int RECORDER_MPIIO_DECL(MPI_File_read_at_all_begin)(MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_at_all_begin, (fh, offset, buf, count, datatype));
     char **args = assemble_args_list(5, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_all_begin)(MPI_File fh, void *buf, int count, MPI_Datatype datatype) {
+int RECORDER_MPIIO_DECL(MPI_File_read_all_begin)(MPI_File fh, void *buf, int count, MPI_Datatype datatype) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_all_begin, (fh, buf, count, datatype));
     char **args = assemble_args_list(4, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype));
     RECORDER_INTERCEPTOR(4, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_read_ordered_begin)(MPI_File fh, void *buf, int count, MPI_Datatype datatype) {
+int RECORDER_MPIIO_DECL(MPI_File_read_ordered_begin)(MPI_File fh, void *buf, int count, MPI_Datatype datatype) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_read_ordered_begin, (fh, buf, count, datatype));
     char **args = assemble_args_list(4, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype));
     RECORDER_INTERCEPTOR(4, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_iread_at)(MPI_File fh, MPI_Offset offset, void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_iread_at)(MPI_File fh, MPI_Offset offset, void *buf, int count,
         MPI_Datatype datatype, __D_MPI_REQUEST *request) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_iread_at, (fh, offset, buf, count, datatype, request));
     char **args = assemble_args_list(6, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype), ptoa(request));
     RECORDER_INTERCEPTOR(6, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_iread)(MPI_File fh, void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_iread)(MPI_File fh, void *buf, int count,
         MPI_Datatype datatype, __D_MPI_REQUEST *request) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_iread, (fh, buf, count, datatype, request));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), ptoa(request));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_iread_shared)(MPI_File fh, void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_iread_shared)(MPI_File fh, void *buf, int count,
         MPI_Datatype datatype, __D_MPI_REQUEST *request) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_iread_shared, (fh, buf, count, datatype, request));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), ptoa(request));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write)(MPI_File fh, CONST void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_write)(MPI_File fh, CONST void *buf, int count,
         MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_at)(MPI_File fh, MPI_Offset offset, CONST void *buf,
+int RECORDER_MPIIO_DECL(MPI_File_write_at)(MPI_File fh, MPI_Offset offset, CONST void *buf,
         int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_at, (fh, offset, buf, count, datatype, status));
     char **args = assemble_args_list(6, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(6, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_at_all)(MPI_File fh, MPI_Offset offset, CONST void *buf,
+int RECORDER_MPIIO_DECL(MPI_File_write_at_all)(MPI_File fh, MPI_Offset offset, CONST void *buf,
         int count, MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_at_all, (fh, offset, buf, count, datatype, status));
     char **args = assemble_args_list(6, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(6, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_all)(MPI_File fh, CONST void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_write_all)(MPI_File fh, CONST void *buf, int count,
         MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_all, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_shared)(MPI_File fh, CONST void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_write_shared)(MPI_File fh, CONST void *buf, int count,
         MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_shared, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_ordered)(MPI_File fh, CONST void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_write_ordered)(MPI_File fh, CONST void *buf, int count,
         MPI_Datatype datatype, MPI_Status *status) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_ordered, (fh, buf, count, datatype, status));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), status2str(status));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_at_all_begin)(MPI_File fh, MPI_Offset offset, CONST void *buf,
+int RECORDER_MPIIO_DECL(MPI_File_write_at_all_begin)(MPI_File fh, MPI_Offset offset, CONST void *buf,
         int count, MPI_Datatype datatype) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_at_all_begin, (fh, offset, buf, count, datatype));
     char **args = assemble_args_list(5, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_all_begin)(MPI_File fh, CONST void *buf, int count, MPI_Datatype datatype) {
+int RECORDER_MPIIO_DECL(MPI_File_write_all_begin)(MPI_File fh, CONST void *buf, int count, MPI_Datatype datatype) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_all_begin, (fh, buf, count, datatype));
     char **args = assemble_args_list(4, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype));
     RECORDER_INTERCEPTOR(4, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_write_ordered_begin)(MPI_File fh, CONST void *buf, int count, MPI_Datatype datatype) {
+int RECORDER_MPIIO_DECL(MPI_File_write_ordered_begin)(MPI_File fh, CONST void *buf, int count, MPI_Datatype datatype) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_write_ordered_begin, (fh, buf, count, datatype));
     char **args = assemble_args_list(4, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype));
     RECORDER_INTERCEPTOR(4, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_iwrite_at)(MPI_File fh, MPI_Offset offset, CONST void *buf,
+int RECORDER_MPIIO_DECL(MPI_File_iwrite_at)(MPI_File fh, MPI_Offset offset, CONST void *buf,
         int count, MPI_Datatype datatype, __D_MPI_REQUEST *request) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_iwrite_at, (fh, offset, buf, count, datatype, request));
     char **args = assemble_args_list(6, file2id(&fh), itoa(offset), ptoa(buf), itoa(count), type2name(datatype), ptoa(request));
     RECORDER_INTERCEPTOR(6, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_iwrite)(MPI_File fh, CONST void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_iwrite)(MPI_File fh, CONST void *buf, int count,
         MPI_Datatype datatype, __D_MPI_REQUEST *request) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_iwrite, (fh, buf, count, datatype, request));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), ptoa(request));
     RECORDER_INTERCEPTOR(5, args);
 }
 
-int RECORDER_MPI_DECL(MPI_File_iwrite_shared)(MPI_File fh, CONST void *buf, int count,
+int RECORDER_MPIIO_DECL(MPI_File_iwrite_shared)(MPI_File fh, CONST void *buf, int count,
         MPI_Datatype datatype, __D_MPI_REQUEST *request) {
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_iwrite_shared, (fh, buf, count, datatype, request));
     char **args = assemble_args_list(5, file2id(&fh), ptoa(buf), itoa(count), type2name(datatype), ptoa(request));
     RECORDER_INTERCEPTOR(5, args);
 }
 
+int RECORDER_MPIIO_DECL(MPI_File_seek) (MPI_File fh, MPI_Offset offset, int whence) {
+    RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_seek, (fh, offset, whence));
+    char **args = assemble_args_list(3, file2id(&fh), itoa(offset), whence2name(whence));
+    RECORDER_INTERCEPTOR(3, args);
+}
+
+int RECORDER_MPIIO_DECL(MPI_File_seek_shared) (MPI_File fh, MPI_Offset offset, int whence) {
+    RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_seek_shared, (fh, offset, whence));
+    char **args = assemble_args_list(3, file2id(&fh), itoa(offset), whence2name(whence));
+    RECORDER_INTERCEPTOR(3, args);
+}
+
+int RECORDER_MPIIO_DECL(MPI_File_get_size) (MPI_File fh, MPI_Offset *offset) {
+    RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_get_size, (fh, offset));
+    char **args = assemble_args_list(2, file2id(&fh), itoa(*offset));
+    RECORDER_INTERCEPTOR(2, args);
+}
+
 int RECORDER_MPI_DECL(MPI_Finalized)(int *flag) {
     // TODO: flag
     RECORDER_INTERCEPTOR_NOIO(int, PMPI_Finalized, (flag));
@@ -688,24 +706,6 @@ int RECORDER_MPI_DECL(MPI_Comm_dup) (MPI_Comm comm, MPI_Comm *newcomm) {
 }
 
 
-int RECORDER_MPI_DECL(MPI_File_seek) (MPI_File fh, MPI_Offset offset, int whence) {
-    RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_seek, (fh, offset, whence));
-    char **args = assemble_args_list(3, file2id(&fh), itoa(offset), whence2name(whence));
-    RECORDER_INTERCEPTOR(3, args);
-}
-
-int RECORDER_MPI_DECL(MPI_File_seek_shared) (MPI_File fh, MPI_Offset offset, int whence) {
-    RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_seek_shared, (fh, offset, whence));
-    char **args = assemble_args_list(3, file2id(&fh), itoa(offset), whence2name(whence));
-    RECORDER_INTERCEPTOR(3, args);
-}
-
-int RECORDER_MPI_DECL(MPI_File_get_size) (MPI_File fh, MPI_Offset *offset) {
-    RECORDER_INTERCEPTOR_NOIO(int, PMPI_File_get_size, (fh, offset));
-    char **args = assemble_args_list(2, file2id(&fh), itoa(*offset));
-    RECORDER_INTERCEPTOR(2, args);
-}
-
 
 // Add MPI_Test, MPI_Testany, MPI_Testsome, MPI_Testall,
 // MPI_Ireduce and MPI_Igather on 2020 12/18