Intel® oneAPI HPC Toolkit
Get help with building, analyzing, optimizing, and scaling high-performance computing (HPC) applications.
2061 Discussions

Intel MPI 3.2 on Linux64: MPI_Comm_connect is not implemented


I am testing a simple client-server application which uses MPI-2 functions.

This is the code (also in attachment):

Both files compile immediately with Intel C compiler for MPI:
joris$ mpiicc -o mclient mclient.c
joris$ mpiicc -o mserver mserver.c

However, when I start the client with Intel MPI, it says that MPI_Comm_connect is not implemented:
joris$ mpirun -n 1 mclient
MPI_Comm_connect is not implemented

When I start the server, an error appears:
joris$ mpirun -n 1 mserver
[cli_0]: aborting job:
Fatal error in MPI_Open_port: Other MPI error, error stack:
MPI_Open_port(118): MPI_Open_port(MPI_INFO_NULL, port=0x7fbfffdb80) failed
(unknown)(): MPI_Type_dup(%D, newtype=%p) failed
rank 0 in job 1 cfdclu60.ugent.be_58276 caused collective abort of all ranks
exit status of rank 0: return code 13

The Intel MPI 3.2 is advertised as an MPI-2 library so why is MPI_Comm_connect not implemented? This limitation is not mentioned in the release notes or reference guide.

Any idea about the cause of the error message? The 'Hello World' example included with the MPI library and several other programs which only use MPI-1 features run perfectly with the Intel MPI. System info follows.

Best regards,

* The Intel MPI Library package name and version information
joris$ mpirun -version
Intel MPI Library for Linux Version 3.2.1
Build 20090312 Platform Intel 64 64-bit applications
Copyright (C) 2003-2009 Intel Corporation. All rights reserved

* Host architecture (for example, IA-32 or Itanium architecture)
EM64T (Dell PowerEdge 1950 server with 2x Quad-core Intel Xeon X5355 2.66GHz)

* Compiler(s) and versions
joris$ mpiicc -v
mpiicc for the Intel MPI Library 3.2.1 for Linux*
Copyright(C) 2003-2009, Intel Corporation. All rights reserved.
Version 11.0

* Operating system(s) and versions
joris$ uname -a
Linux 2.6.9-78.0.17.ELsmp #1 SMP Thu Mar 12 12:05:34 CDT 2009 x86_64 x86_64 x86_64 GNU/Linux
joris$ cat /etc/redhat-release
Red Hat Enterprise Linux ES release 4 (Nahant Update 5)
Scientific Linux SL release 4.5 (Beryllium)
0 Kudos
1 Reply

Hi Joris,

Indeed, the Intel MPI Library currently doesn't support MPI_Comm_connect. As noted in our Release Notes:

The following MPI-2 features are not supported by the Intel MPI Library:

  • Process spawning and attachment

This functionality might be included in upcoming major releases of the Intel MPI Library. For updates, feel free to check the Intel MPI Library page at

Thanks and regards,

0 Kudos