[mpich-discuss] Assertion error for bcast2 test (mpich2 1.3 with KNEM)

[Dave Goodell]

On Nov 4, 2010, at 9:17 PM CDT, Miao wrote:

> When I tried to run mpich2 1.3 nemesis with KNEM for the tests inside mpich2 source code, an assertion error for bcast2 test under test/mpi/coll came out as follow:
> 
> $ ../../../bin/mpiexec -machinefile hosts -n 2 ./bcast2
> Assertion failed in file mpid_nem_lmt_dma.c at line 474: ("should never be incomplete!", 0)
> internal ABORT - process 1
> 
> We are wondering if this is a bug within nemesis codes for KNEM and we'd like to report it to mpich2 group.

What version of knem are you using?  I just looked and noticed that the version we ship in the contrib directory of MPICH2 is very old (v0.5.0).  I've taken a note to update that, but in the interim you would be better off using the latest version from the knem website if you aren't already.

http://runtime.bordeaux.inria.fr/knem/

-Dave