IntelĀ® MPI Library Reference Manual for Linux* OS
The Checkpoint-Restart feature in IntelĀ® MPI Library is designed to be application transparent. You can access to the Checkpoint-Restart functionality through the MPI process management interface. The Checkpoint-Restart options and environment variables are applicable to the Hydra process manager only. To use the Hydra process manager, set I_MPI_PROCESS_MANAGER=hydra if you to change the process manager from the default value.
The Checkpoint-Restart feature requires the OFA* network module. You can choose the OFA network module, for example, with the I_MPI_FABRICS environment variable by setting the value to ofa, or the -ib option.
To enable the Checkpoint-Restart feature, set the following:
1 for I_MPI_OFA_DYNAMIC_QPS environment variable
0 for I_MPI_OFA_NUM_RDMA_CONNECTIONS environment variable
Install the Berkeley Lab Checkpoint/Restart* (BLCR) Software for the Checkpoint-Restart function.