I tried to use BLCR with MPICH3. However, it seems not to work. I compile the blcr in CentOS and `make test` show not fail tests. Then, I compile mpich with BLCR. The information is shown as follows, $ mpichversion MPICH Version: 3.1.2 MPICH Release date:Mon Jul 21 16:00:21 CDT 2014 MPICH Device: ch3:nemesis MPICH configure: --prefix=/home/test/develop/mpich3-blcr --with-device=ch3:nemesis CFLAGS=-fPIC --enable-checkpointing --with-blcr=/home/test/develop/blcr-0.8.5 --with-hydra-ckpointlib=blcr MPICH CC: gcc -fPIC -O2 MPICH CXX: g++ -O2 MPICH F77: gfortran -O2 MPICH FC: gfortran -O2 After that, I compile my application like this $ mpicc mpiblcr.c -o mpiblcr -lcr When I firstly run the application, it seems ok to make the checkpoint files, such as context-num0-0-0. $ mpiexec -ckpointlib blcr -ckpoint-prefix `pwd` -ckpoint-interval 2 -n 2 ./mpiblcr 5411) Step 0 5410) Step 0 5410) Step 1 5411) Step 1 [proxy:0:0@node1] requesting checkpoint [proxy:0:0@node1] checkpoint completed 5410) Step 2 5411) Step 2 However, when I try to restart the process with checkpoint, it hangs and thereis no information printed. $ mpiexec -ckpointlib blcr -ckpoint-prefix `pwd` -n 2 -ckpoint-num 1 The pstree shows the pmi start application process ├─sshd─┬─3*[sshd───sshd───bash] │ ├─sshd───sshd───bash───mpiexec───hydra_pmi_proxy───mpiblcr │ └─sshd───sshd───bash───pstree and `ps aux` shows the process is defunct $ ps aux | grep osu_bw test 15290 0.0 0.0 0 0 ? Z 21:44 0:00 [mpiblcr] <defunct> I don't know how to identify this problem. I also see someone had the same problem like me several years ago #1144. But, there are no solutions.