[Pkg-openmpi-maintainers] Open MPI and mpi-defaults

[Adam C Powell IV]

On Tue, 2009-01-06 at 12:25 -0600, Dirk Eddelbuettel wrote:
> I noticed that openmpi is now owner of a FTFBS against mpi-defaults because
> the latter wants the former which is missing on Alpha.

I'm sorry, I was supposed to let you know about this, as this openmpi
failure is keeping arpack++ out of Lenny.  The real problem is that
openmpi is FTBFS on alpha, see below.

> Can anybody dive in there and sort this out?

The openmpi buildd log on alpha [1] ends with:
[1] http://buildd.debian.org/fetch.cgi?pkg=openmpi;ver=1.2.8-3;arch=alpha;stamp=1225663211

/bin/sh ../../../libtool --tag=CXX   --mode=link g++  -DNDEBUG -g -O2 -finline-functions -pthread  -export-dynamic   -o ompi_info components.o ompi_info.o output.o param.o version.o ../../../ompi/libmpi.la -lnsl  -lutil -lm 
libtool: link: g++ -DNDEBUG -g -O2 -finline-functions -pthread -o .libs/ompi_info components.o ompi_info.o output.o param.o version.o -Wl,--export-dynamic  ../../../ompi/.libs/libmpi.so /usr/lib/libibverbs.so -lpthread -lrt /build/buildd/openmpi-1.2.8/build/static/orte/.libs/libopen-rte.so /build/buildd/openmpi-1.2.8/build/static/opal/.libs/libopen-pal.so -ldl -lnsl -lutil -lm -pthread -Wl,-rpath -Wl,/usr/lib/openmpi/lib
../../../ompi/.libs/libmpi.so: undefined reference to `opal_sys_timer_get_cycles'
collect2: ld returned 1 exit status
make[3]: *** [ompi_info] Error 1
make[3]: Leaving directory `/build/buildd/openmpi-1.2.8/build/static/ompi/tools/ompi_info'

Earlier on we have:

make[3]: Entering directory `/build/buildd/openmpi-1.2.8/build/basic/ompi/mca/btl/openib'
...
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I../../../../opal/include -I../../../../orte/include -I../../../../ompi/include -I../../../../../../ompi/mca/btl/openib -DPKGDATADIR=\"/usr/share/openmpi\" -I../../../../../.. -I../../../.. -I../../../../../../opal/include -I../../../../../../orte/include -I../../../../../../ompi/include -DNDEBUG -Wall -g -O2 -finline-functions -fno-strict-aliasing -pthread -MT btl_openib_component.lo -MD -MP -MF .deps/btl_openib_component.Tpo -c ../../../../../../ompi/mca/btl/openib/btl_openib_component.c  -fPIC -DPIC -o .libs/btl_openib_component.o
../../../../../../ompi/mca/btl/openib/btl_openib_component.c: In function 'btl_openib_component_init':
../../../../../../ompi/mca/btl/openib/btl_openib_component.c:666: warning: implicit declaration of function 'opal_sys_timer_get_cycles'

Okay, found it.  This function is inline assembly in timer.h, which
exists in opal/sys/amd64, ia32, ia64, powerpc and sparcv9 but not alpha,
mips, sparc or win32.  That said, timer.h in opal/sys has:

#ifndef OPAL_HAVE_SYS_TIMER_GET_CYCLES
#define OPAL_HAVE_SYS_TIMER_GET_CYCLES 0

which somehow is working on sparc (no reference to this function in the
buildd log) but not alpha.  (On mips, there are a bunch of assembler
errors of the form "opcode not supported on this processor".)

That's about what I have time for now.  Don't worry about mpi-defaults,
it's not trying to get into Lenny; but we should worry about OpenMPI not
building on alpha.  Does anyone on users at open-mpi.org have any ideas?

-Adam
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