"Cannot allocate memory" error

[Phú Huy Nguyễn]

Dear all, 

When I tried   

mpirun -n 4 ./ring.exe pv ParticlePositions ParticleVelocities  

It shows an error  like below: 

 ib_iface.c:1029 UCX  ERROR ibv_create_cq(cqe=4096) failed: Cannot allocate memory

Abort(607768079) on node 0 (rank 0 in comm 0): Fatal error in internal_Init: Other MPI error, error stack:
internal_Init(59).............: MPI_Init(argc=0x7ffd970edf4c, argv=0x7ffd970edee0) failed
MPII_Init_thread(217).........:
MPIR_init_comm_world(34)......:
MPIR_Comm_commit(722).........:
MPIR_Comm_commit_internal(510):
MPID_Comm_commit_pre_hook(158):
MPIDI_UCX_init_world(285).....:
init_worker(71)...............:  ucx function returned with failed status(ucx_init.c 71 init_worker Input/output error) 

First I thought it was because I haven't loaded the module of mpi but it's not. This makes me confused because it worked before. So I want to ask if there's anyone has any idea to solve this. 

Thank you very much 

Best regards 

Huy