Realm: barrier assertion

[syamajala]

I'm seeing the following assertion when running S3D on Frontier:

s3d.x: /lustre/orion/cmb103/scratch/seshuy/legion_s3d_tdb/legion/runtime/realm/barrier_impl.cc:1259: static void Realm:
:BarrierTriggerMessage::handle_message(Realm::NodeID, const Realm::BarrierTriggerMessage&, const void*, size_t, Realm::
TimeLimit): Assertion `datalen == (impl->redop->sizeof_lhs * (trigger_args.internal.trigger_gen - trigger_args.internal
.previous_gen))' failed.

It seems to happen when I turn on profiling as my run without profiling succeeded.

[syamajala]

Also I am running on the onepool branch.

[lightsighter]

The critical path profiling requires the use of Realm barrier reductions which are not used when you are not profiling. What are the values of datalen, impl->redop->sizeof_lhs, trigger_args.internal.trigger_gen, trigger_args.internal.previous_gen, and trigger_args.internal.first_gen?

[lightsighter]

If you want to avoid this error for now and you don't mind not having critical path profiling then you can run with -lg:prof_no_critical_paths.

I'll also note that this doesn't have anything to do with onepool and will happen in the master branch as well.

[apryakhin]

Yep that is certainly a bug due to my recent merge of the notification broadcast. That will be fixed at the earliest convenience.