[ntuple] Add tutorial for framework usage #16536
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| // A SerializingOutputter uses a sequential RNTupleWriter to append an RNTuple to a TFile and a std::mutex to | ||
| // synchronize multiple threads. |
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Maybe we could add a note about IMT (or enable it), to show that page compression can still be in parallel even with the sequential mode.
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I thought about this and unfortunately I think this is not possible / not efficient with the implementation in this tutorial: A thread blocking to acquire a std::mutex cannot "help" the other thread that is currently in the critical section by executing its tasks. I added a note, also on the direct usage of std::thread.
Test Results 14 files 14 suites 2d 21h 24m 31s ⏱️ Results for commit 122daf2. ♻️ This comment has been updated with latest results. |
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Hi @Dr15Jones @makortel @siliataider, this PR aims to provide a tutorial how we (ROOT) envision frameworks could use the RNTuple API for writing. If you have some time, it would be great if you could check whether it makes sense and demonstrates the relevant use cases. The "framework code" is obviously very much simplified and the goal is not to code a full production framework, but I hope it's close enough to what the "real" experiment frameworks are doing. Thanks in advance! |
Closes #16290