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From: Åke Sandgren (ake.sandgren_at_[hidden])
Date: 2006-10-16 04:13:24


On Fri, 2006-10-06 at 00:04 -0400, Jeff Squyres wrote:
> On 10/5/06 2:42 PM, "Michael Kluskens" <mklus_at_[hidden]> wrote:
>
> > System: BLACS 1.1p3 on Debian Linux 3.1r3 on dual-opteron, gcc 3.3.5,
> > Intel ifort 9.0.32 all tests with 4 processors (comments below)
> >
> > OpenMPi 1.1.1 patched and OpenMPI 1.1.2 patched:
> > C & F tests: no errors with default data set. F test slowed down
> > in the middle of the tests.
>
> Good. Can you expand on what you mean by "slowed down"?

Lets add some more data to this...
BLACS 1.1p3
Ubuntu Dapper 6.06
dual opteron
gcc 4.0
gfortran 4.0 (for both f77 and f90)
standard tests with 4 tasks on one node (i.e. 2 tasks per cpu)

OpenMPI 1.1.2rc3
The tests comes to a complete standstill at the integer bsbr tests
It consumes cpu all the time but nothing happens.

Any ideas?

configure params:
./configure --prefix=/lap/openmpi/1.1.2rc3/gcc-4.0-dbg
--with-tm=/lap/torque --with-pic --enable-mem-debug --enable-debug
--enable-picky --enable-cxx-exceptions --with-wrapper-fflags=-ff2c
--with-wrapper-fcflags=-ff2c

-- 
Ake Sandgren, HPC2N, Umea University, S-90187 Umea, Sweden
Internet: ake_at_[hidden]   Phone: +46 90 7866134 Fax: +46 90 7866126
Mobile: +46 70 7716134 WWW: http://www.hpc2n.umu.se