Good suggestion, Paul - I have committed it in r32407 and added it to cmr #4826
Thanks!
Ralph
On Aug 1, 2014, at 1:12 AM, Paul Hargrove wrote:
> Gilles,
>
> At the moment ompi/mca/osc/sm/osc_sm_component.c is using the following:
>
> #ifdef HAVE_GETPAGESIZE
> pagesize = getpagesize();
On Fri, Aug 1, 2014 at 1:19 AM, Gilles Gouaillardet <
gilles.gouaillar...@iferc.org> wrote:
> Paul,
>
> i just commited r32393 (and made a CMR for v1.8)
>
> can you please give it a try ?
>
I am not equipped to build from svn on most of my test platforms.
However, I applied your one-line change
Paul,
i just commited r32393 (and made a CMR for v1.8)
can you please give it a try ?
in the mean time, i received your email ...
sysconf is called directly (e.g. no #ifdef protected) in several other
places :
$ grep -R sysconf . | grep -v svn | grep -v sysconfdir | grep -v
autom4te |grep PA
Gilles,
At the moment ompi/mca/osc/sm/osc_sm_component.c is using the following:
#ifdef HAVE_GETPAGESIZE
pagesize = getpagesize();
#else
pagesize = 4096;
#endif
While other places in the code use sysconf(), but not always consistently.
And on some systems _SC_PAGESIZE is spelled
Paul,
you are absolutly right !
in ompi/mca/coll/ml/coll_ml_lmngr.c at line 53,
cm->lmngr_alignment is hard coded to 4096
as a proof of concept, i hard coded it to 65536 and now coll/ml works
just fine
i will now write a patch that uses sysconf(_SC_PAGESIZE) instead
Cheers,
Gilles
On 2014/08
Hmm, maybe this has nothing to do with big-endian.
Below is a backtrace from ring_c on an IA64 platform (definitely
little-endian) that looks very similar to me.
It happens that sysconf(_SC_PAGESIZE) returns 64K on both of these systems.
So, I wonder if that might be related.
-Paul
$ mpirun -mca
Gilles's findings are consistent with mine which showed the SEGVs to be in
the coll/ml code.
I've built with --enable-debug and so below is a backtrace (well, two
actually) that might be helpful.
Unfortunately the output of the two ranks did get slightly entangled.
-Paul
$ ../INST/bin/mpirun -mca
Paul and Ralph,
for what it's worth :
a) i faced the very same issue on my (slw) qemu emulated ppc64 vm
b) i was able to run very basic programs when passing --mca coll ^ml to
mpirun
Cheers,
Gilles
On 2014/08/01 12:30, Ralph Castain wrote:
> Yes, I fear this will require some effort to cha
Yes, I fear this will require some effort to chase all the breakage down given
that (to my knowledge, at least) we lack PPC machines in the devel group.
On Jul 31, 2014, at 5:46 PM, Paul Hargrove wrote:
> On the path to verifying George's atomics patch, I have started just by
> verifying that
On the path to verifying George's atomics patch, I have started just by
verifying that I can still build the UNPATCHED trunk on each of the
platforms I listed.
I have tried two PPC64/Linux systems so far and am seeing the same problem
on both. Though I can pass "make check" both platforms SEGV on
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