On Fri, 2017-04-14 at 14:14 -0700, Jaln wrote:

Hi, I have downloaded the mpich3.3a2, I was checking this function ADIOI_GEN_WriteStridedColl() in mpi/romio/adio/common/ad_write_coll.c

I was trying to figure out which function will call it. The website http://charm.cs.uiuc.edu/doxygen/charm/adioi__fs__proto_8h.sh tml#b325f693fff3f079e9d50d5f845e4d0f

There is a structure of function pointers. ADIO_WriteStridedColl is a C macro that provides some syntactic sugar around the function pointer call.

shows a caller graph, and it shows ADIOI_XFS_WriteStridedColl is one of the callers. But I couldn't find it in this mpich branch. All it has:   ad_xfs.c  ad_xfs.h  ad_xfs_fcntl.c  ad_xfs_hints.c  ad_xfs_open.c  ad_xfs_read.c  ad_xfs_resize.c  ad_xfs_write.c

Is there any change to the code structure? 

no change in code structure: just some C preprocessor trickery combined with function pointer magic. To answer your question, start with MPIOI_File_write_all() in write_all.c ==rob