Does this happen only with master ?

what does
ldd mpicc
says ?
does it require both libnl and libnl3 ?

libnl3 is used by OpenMPI if libnl3-devel package is installed,
and this is not the case on your system

a possible root cause is third party libs use libnl3, and the reachable/netlink component tries to use libnl, in this case, installing libnl3-devel should fix your issue
/* you will need to re-configure after that */

an other possible root cause is some third party libs use libnl and other use libnl3,
and in this case, i am afraid there is no simple workaround.
if installing libnl3-devel did not solve your issue, you can give a try to
https://github.com/open-mpi/ompi/pull/1014
at least, it will abort with an error message that states which lib is using libnl and which is using libnl3

i am afraid the only option is to manually disable some components, so only one flavor of lib nl is used. that can be achieved by adding a .opal_ignore empty file in the dir of the components you want to disable.
/* you will need to rerun autogen.pl after that */

Cheers,

Gilles

On 3/28/2016 3:16 PM, dpchoudh . wrote:
Hello all

The system in question is a CentOS 7 box, that has been running OpenMPI, both the master branch and the 1.10.2 release happily until now.

Just now, in order to debug something, I recompiled with the following options:

$ ./configure --enable-debug --enable-debug-symbols --disable-dlopen

The compilation and install was successful; however, mpicc now crashes like this:

[durga@smallMPI ~]$ mpicc -Wall -Wextra -o mpitest mpitest.c
mpicc: route/tc.c:973: rtnl_tc_register: Assertion `0' failed.
Aborted (core dumped)


Searching the mailing archive, I found two posts that describe similar situations:

https://www.open-mpi.org/community/lists/devel/2015/08/17812.php
http://www.open-mpi.org/community/lists/users/2015/11/28016.php

However, the solution proposed in these, to disable verbs, is not acceptable to me for the following reasons: I am trying to implement a new BTL by reverse engineering the openib BTL. I am using a Qlogic HCA for this purpose. (Please note that I cannot use PSM as I am writing code for a BTL)

As there any more acceptable solutions for this? Here are the list of nl libraries on my box:

[durga@smallMPI ~]$ sudo yum list installed | grep libnl
libnl.x86_64 1.1.4-3.el7                     @anaconda
libnl-devel.x86_64 1.1.4-3.el7                     @anaconda
libnl3.x86_64 3.2.21-10.el7                   @base
libnl3-cli.x86_64 3.2.21-10.el7                   @base

and uninstalling libnl3 is not an option either: it seems yum wants to uninstall around 100 odd other packages because of dependency which will essentially render the machine unusable.

 Please help!

Thanks in advance
Durga

We learn from history that we never learn from history.


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