Extend the task precedence tracer for dumping dynamic graphs (video demo)

That may be useful for debugging, scheduling policy development or outreach purposes. E.g., see below the video of task precedence dynamics (with all other task info hidden) for an ATLAS reconstruction workflow: execution_trace

The MR also includes a few other minor improvements to the tracer identifiable from the commit messages.

added task scheduling label

changed the description

changed title from Extend the task precedence tracer for dumping dynamic graphs to Extend the task precedence tracer for dumping dynamic graphs (video demo)

assigned to @clemenci

changed milestone to %v35r3

added lhcb-gaudi-head label

• [2021-03-25 00:06] Validation started with lhcb-gaudi-head#2888
• [2021-03-25 01:08] Validation started with lhcb-run2-gaudi-head#96
• [2021-03-26 00:04] Validation started with lhcb-gaudi-head#2889
• [2021-03-26 00:45] Validation started with lhcb-run2-gaudi-head#97
• [2021-03-26 01:07] Validation started with lhcb-gaudi-head#2889
• [2021-03-27 00:06] Validation started with lhcb-gaudi-head#2890
• [2021-03-27 00:58] Validation started with lhcb-run2-gaudi-head#98
• [2021-03-28 00:03] Validation started with lhcb-gaudi-head#2891
• [2021-03-28 00:09] Validation started with lhcb-run2-gaudi-head#99
• [2021-03-29 00:06] Validation started with lhcb-gaudi-head#2892
• [2021-03-30 00:04] Validation started with lhcb-gaudi-head#2893
• [2021-03-31 00:05] Validation started with lhcb-gaudi-head#2894
• [2021-03-31 01:02] Validation started with lhcb-run2-gaudi-head#100
• [2021-04-01 00:30] Validation started with lhcb-gaudi-head#2895
• [2021-04-01 01:14] Validation started with lhcb-run2-gaudi-head#101
• [2021-04-02 00:07] Validation started with lhcb-gaudi-head#2896
• [2021-04-02 00:47] Validation started with lhcb-run2-gaudi-head#102
• [2021-04-02 01:22] Validation started with lhcb-run2-gaudi-head#102
• [2021-04-03 00:13] Validation started with lhcb-run2-gaudi-head#103
• [2021-04-03 00:42] Validation started with lhcb-run2-gaudi-head#103

approved this merge request

merged

mentioned in commit 44f9d739