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v3.3.3-pre
Present: Enric, Xavi, Guilherme, Pere, Axel, Jim, Zhe, Danilo
PyROOT update:
- It was observed that even if the ctor accepting a list which is then expanded to satisfy the ctor with N parameters can be implemented in Python, the syntax looks weird. The goal here is to find a way in which list initialisation can happen in Python. It's not the first "odd" concept we introduce in PyROOT (we have templates...).
- It is perhaps desirable to have both initialisation with tuples and lists. Here we did not decide yet how to proceed. On the one hand, often in python you have a variable in hands whose type is not clear - you just throw it at the interface and if that makes sense, Python works. On the other hand a solution coherent with initialiser lists needs to be found.
- We agree that a unified protocol for exchanging buffers needs to be implemented in order to achieve interoperability of arrays, vectors, numpyArrays.
Round table:
- Progress happening in the porting of the nuons model script to TDF
- The callback will be soon implemented in TBufferMerger to satisfy the requirement of Dan. A simple way to return the number of elements in the queue will be provided too.
- Progress on the implementation of the TDataSources since the interface is more or less decided. News next week
- Parallel TBasket unzip: A 5% runtime penalty in performance has been measured when nesting TTaskGroups. This is is due to TBB task_group and there is little we can do there. Zhe will switch to TThreadedExecutor and re-run the test.