Wait for some tasks but not for others

[danielru]

I was wondering if/how it is possible, to wait for only the completion of some sub-tasks but not all. If I am reading the code correct, the torc.wait() function does not use arguments, is that right?

I was hoping to do something along the lines of

task1 = torc.submit(...).
task2 = torc.submit(...).
torc.wait(task1)

so that the code only has to wait for task1 to complete but can continue while task2 is still running. Is that possible?

[phadjido]

Yes, torc.wait actually works as torc.waitall, mainly for simplicity in the interface (API) and the implementation.
Partial wait of tasks can be supported with some code additions, I can try to add it.
My only concern, from a user perspective, is the management (waiting) of the rest of the submitted tasks. To keep the API simple, all the pending child tasks (if any) should be waited at some point.

[phadjido]

It has not been tested thoroughly yet, but the new branch waitsome provides support for partial wait of tasks, with small internal code additions.
Example code: https://github.com/IBM/torc_py/blob/waitsome/examples/ex12_waitsome.py

[danielru]

@phadjido Thanks a lot for the quick reply! I'll give it a go and let you know if I encounter any problems.