Dear Mochi users,
I just released new versions for the following packages:
* Margo => 0.6
* Thallium => 0.5
* PyMargo => 0.3
As usually, you can get them by updating your clone of sds-repo and having spack rebuild them.
These new version add 4 new functions:
* margo_push_prefinalize_callback
* margo_provider_push_prefinalize_callback
* margo_pop_prefinalize_callback
* margo_provider_pop_prefinalize_callback
Contrary to finalization callbacks, pre-finalization callbacks are called when Margo is finalized, but *before* the Mercury progress loop is terminated. This allows to do things that still require the progress loop to be running (like sending RPCs or calling margo_thread_sleep). However keep in mind that since the progress loop still runs, the process can still receive RPCs.
The readthedocs will be updated shortly with this information.
As a concrete example, if you are using SSG, you will want to put ssg_finalize() in a pre-finalize callback, since this function sends RPCs and calls margo_thread_sleep. Calling ssg_finalize() in a finalize callback will cause the program to hang.
Thanks,
Matthieu
