[mpich-discuss] Help Building MPICH 4.0b1: undefined references to hwloc

[Brice Goglin]

Le 14/12/2021 à 21:40, Thompson, Matt (GSFC-610.1)[SCIENCE SYSTEMS AND 
APPLICATIONS INC] via discuss a écrit :
>
> MPICH Discuss,
>
> I'm sure I've done something stupid, but I'm not sure what. I tried 
> searching google, but my google-fu failed me.
>
> Today I decided to try and build MPICH 4.0b1 on a cluster I'm on (NCCS 
> Discover) using GCC 11.2. My configure line was quite boring:
>
> ./configure CC=gcc CXX=g++ FC=gfortran \
>
> FCFLAGS=-fallow-argument-mismatch \
>
> FFLAGS=-fallow-argument-mismatch \
>
> --prefix=/discover/swdev/gmao_SIteam/MPI/mpich/4.0b1/gcc-11.2.0
>
> The MPICH configure step was nice enough to let me know I needed those 
> FFLAGS and FCFLAGS. And it configured just happily.[1]
>
> When I went to the make step I eventually it errored out with:
>
> make[3]: Entering directory 
> '/gpfsm/dswdev/gmao_SIteam/MPI/src/mpich-4.0b1/src/pm/hydra'
>
> CCLD     libpm.la
>
> CCLD     hydra_persist
>
> /usr/bin/ld: 
> /discover/swdev/gmao_SIteam/MPI/src/mpich-4.0b1/src/pm/hydra/.libs/libhydra.a(topo_hwloc.o): 
> in function `HYDT_topo_hwloc_init':
>
> /discover/swdev/gmao_SIteam/MPI/src/mpich-4.0b1/src/pm/hydra/tools/topo/hwloc/topo_hwloc.c:577: 
> undefined reference to `hwloc_topology_set_io_types_filter'
>

Hello

I think this error usually occurs when compiling against hwloc 2.x (such 
as the one embedded inside MPICH) but linking against an old hwloc 1.x. 
Do you have such an old hwloc installed on this machine? The first line 
below likely says yes. I don't know why configure would mix them like 
this, but you should be able to avoid the error by uninstalling the old 
hwloc (or with a chmod 0 on its libhwloc.so during your configure).

Brice


> checking if hwloc meets minimum version requirement... no
>
> configure: ===== configuring modules/hwloc =====
>
> ...
>
> ### Configuring hwloc core
>
> ###
>
> checking hwloc building mode... embedded
>
> configure: hwloc builddir: 
> /discover/swdev/gmao_SIteam/MPI/src/mpich-4.0b1/modules/hwloc
>
> configure: hwloc srcdir: 
> /discover/swdev/gmao_SIteam/MPI/src/mpich-4.0b1/modules/hwloc
>
> ...
>
>
> And I can't see anything in the output that it's somehow picking up on 
> an hwloc I might have installed somewhere else (be it Open MPI or just 
> hwloc by hand).
>
> Maybe there are flags I need to pass? I do see reference to 
> --with-hwloc=embedded, but it looks like configure decided to use that 
> itself.
>
> Thanks for any help,
>
> Matt
>
> [1] Note: I'm building on an Infiniband system so maybe I need to do a 
> build with --with-device=ch4:ucx eventually, but that's a runtime 
> thing. I figure it can't be involved with this error...right?
>
> -- 
>
> Matt Thompson, SSAI, Ld Scientific Programmer/Analyst
>
> NASA GSFC,    Global Modeling and Assimilation Office
>
> Code 610.1,  8800 Greenbelt Rd,  Greenbelt,  MD 20771
>
> Phone: 301-614-6712                 Fax: 301-614-6246
>
> _http://science.gsfc.nasa.gov/sed/bio/matthew.thompson_
>
>
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