Hi Zhifeng, I searched the mpich-3.2.1 codebase and there is no `get_addr` symbol, so it appears it is a function in your codebase. Try search that see if it yields any clues. The error is during MPI_INIT, so try identify the codes before MPI_INIT, hopefully (as it should), it comes quite early. Then you may try a smaller code that copies the code up to MPI_INIT and see if you can reproduce the errror. In the case that MPI_INIT is burried in your codebase, could you try put your code in a debugger and obtain a backtrace at the point of MPI_INIT? Also in your original email, was there some texts inside those eclipses?

...

MPIR_Init_thread(784).....: MPID_Init(1323)...........: channel initialization failed MPIDI_CH3_Init(120).......: MPID_nem_init_ckpt(852)...: MPIDI_CH3I_Seg_commit(364): PMI_Barrier returned -1

-- Hui Zhou On Mon, Nov 19, 2018 at 01:49:04PM -0500, Zhifeng Yang wrote:

Hi Hui,

I just searched the whole code. There is no MPI_T_* name in the code. I may tried the newer version later on. Thank you very much

Zhifeng