Logger multithreading

Still waiting on !1294 (merged) in order to add the number of threads in the parameter structure.

Nothing fancy here, I am just rewriting the read_all functions in order to use a threadpool. While the code is a bit slower now on 1 thread, I see a speedup of 2.3 when using 4 threads compared to the previous version. The speedup obtained is for the SedovBlast3D, therefore we are still dealing with a relatively small example where setting up the threadpool takes a non negligible amount of time.

changed milestone to %Continuous Simulation Data Stream

added i/o performance labels

added 53 commits

• e6a1b57b...c4c308cd - 49 commits from branch master
• 14d2a168 - Multithreading implemented
• 90ddcc50 - Cleanup
• c5e2886e - Format
• e2b37181 - Update structure name

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added 1 commit

• 36c609ce - Add number_threads parameter

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added 1 commit

• 5278a24d - Fix tests

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unmarked as a Work In Progress

@matthieu This is ready to be reviewed. I am changing slightly the logic here in order to use the threadpool. As I might have some particles leaving the simulation (e.g. MPI or star formation), I am using two shared int to know where to write the information and which particle to select next. The python API is also updated in order to have the argument number_threads.

In the previous merge request, I have introduced a tiny mistake in SPHENIX that I am fixing here (along with the automatic tests). Once this is merged, I will start to change the name from logger to CSDS. How should I proceed? Are you fine with a single large merge request that updates all the names (and only this)?

assigned to @matthieu

assigned to @nnrw56 and unassigned @matthieu

resolved all threads

merged

mentioned in commit 0d875dab