Why can't I check save and restore to Raspberry Pi with MPICH/BLCR?

Question

Raspberry Pi

Hi all.
Already tortured trying to solve the problem.
I got everyone on stackoverflow. Link
I have RPi (Raspberry Pi Model B x 10 pieces). It has Raspbian and MPICH and BLCR.
I need to checkpoint any MPI application and restart later from it. Without MPI BLCR works with a bang. The thing is, I get a lot of errors. I’ve been familiar with MPI and BLCR for a couple of weeks / months, at the university they said sort it out or not for you to pass (this is our project).
I just don't know what to do anymore. Tried everything possible (MPI_Irecv, MPI_Reduce, MPI_*). The only problem is with this checkpoint.
I realized that I need to call MPI functions before checkpoint, otherwise there will be an error that he couldn’t do something there, etc.
If there are those who know MPI (MPICH) and BLCR with experience on ARM, please help.
See the link above for all the details.