I usually use Julia in Jupyter. While using Threads.@spawn, the threads of jupyter is occupied. Then, untie the whole task is finished, I can not do anything.
So, is there a way I can forbbidden Threads.@spawn using #1 threads?
Well, if there is just one Julia thread, it is this only thread that needs to do the work. Dropping the Threads.@spawn is not going to help: the computation still needs to run somewhere.
Quite the opposite actually. If you start your IJulia kernel with multiple threads (see here), than @spawn is going to be useful in having the computation run on a “worker thread”.
(You might want to check out ThreadPools.jl’s @tspawnat (or @bthreads) to actually enforce that the computation runs on a “worker thread” and not on the “master thread”.)
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Thanks for you.