filter federate example hangs

[trevorhardy]

Describe the bug At some point in the filter federate example, all federates are requesting a time and none are ever granted, hanging the co-simulation.

To Reproduce Run filter federate example and look at the logs to confirm all federates have requested a time and are waiting to be granted one.

Environment (please complete the following information):

• Operating System: Mac
• Language Extension: Python
• what compiler or setup process did you use: download v3b2 and install
• HELICS version: v3b2 (2021-06-30)

Additional context and information I retested this on my installation and this is failing under v3b1 as well though I thought it was previously working under that release.

[trevorhardy]

v3.1 update:

When setting "event_triggered" undefined the co-simulation hangs. When setting "event_triggered" to "true" and "grant_timeout" to "0" the co-simulation runs to completion. When setting "event_triggered" to "true" and "grant_timeout" to "1" the co-simulation runs to completion BUT generates a different result than when "grant_timeout" is "0".

With grant_timeout = 0:

With grant_timeout = 1:

Progress?

[trevorhardy]

Checked on v3.2.0 and federation is still hanging.

[phlptp]

@trevorhardy can you check on 3.2.1?

[trevorhardy]

Check on v3.2.1 and federation is still hanging.

[phlptp]

@trevorhardy you want to test this again with the latest release (or 3.4 when it comes out)

[trevorhardy]

Yes. I can't remember whether I tested this in v3.3 and I'll be sure to do so under v3.4.

[trevorhardy]

Federation still hangs in v3.4.0. All federates requesting a time and none being granted one.

[trevorhardy]

Federation still hangs in v3.5.0. All federates requesting a time and none being granted one.