[Pw_forum] mpi error using pw.x

[Chong Wang]

I compiled quantum espresso 5.4 with intel mpi and mkl 2016 update 3.

However, when I ran pw.x the following errors were reported:

...
MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384 free on this process; ignore_id=0)
Fatal error in PMPI_Cart_sub: Other MPI error, error stack:
PMPI_Cart_sub(242)...................: MPI_Cart_sub(comm=0xc400fcf3, remain_dims=0x7ffde1391dd8, comm_new=0x7ffde1391d30) failed
PMPI_Cart_sub(178)...................:
MPIR_Comm_split_impl(270)............:
MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384 free on this process; ignore_id=0)
Fatal error in PMPI_Cart_sub: Other MPI error, error stack:
PMPI_Cart_sub(242)...................: MPI_Cart_sub(comm=0xc400fcf3, remain_dims=0x7ffc02ad7eb8, comm_new=0x7ffc02ad7e10) failed
PMPI_Cart_sub(178)...................:
MPIR_Comm_split_impl(270)............:
MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384 free on this process; ignore_id=0)
Fatal error in PMPI_Cart_sub: Other MPI error, error stack:
PMPI_Cart_sub(242)...................: MPI_Cart_sub(comm=0xc400fcf3, remain_dims=0x7fffb24e60f8, comm_new=0x7fffb24e6050) failed
PMPI_Cart_sub(178)...................:
MPIR_Comm_split_impl(270)............:
MPIR_Get_contextid_sparse_group(1330): Too many communicators (0/16384 free on this process; ignore_id=0)


I googled and found out this might be caused by hitting os limits of number of opened files. However, After I increased number of opened files per process from 1024 to 40960, the error persists.


What's wrong here?


Chong Wang

Ph. D. candidate

Institute for Advanced Study, Tsinghua University, Beijing, 100084
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