Is matlab officially going to release multithreading-like SDK feature?

multithreading is required for many applications. Is matlab officially going to release multithreading-like SDK feature?

[Walter Roberson]

How would that differ from the Parallel Computing Toolbox?

[Minggui Chen]

It empowers you to do complicated control task, rather than only computation.

[Walter Roberson]

spmd and parfor and parfeval allow control tasks, not just computation.

If the idea is multiple threads would be able to access the same device or same graphics system, then that would require quite a rewrite of how parallel processing works at present, as current parallel processing uses different processes for different workers, rather than using different threads in the same process. Parallel Processing at the moment is based upon Message Passing Interface (MPI-2))

Mathworks cannot simply use the Posix Threads library (pthreads) for lightweight local threads, because MS Windows does not support pthreads.

[Minggui Chen]

Thank you very much for you answer. I also want the communication between different threads. Do you know whether there is a feature for that? And also, I will run GUI with the main thread. Please let me know if you have any information about it.

[Walter Roberson]

spmd() has labSend() and labReceive()

It is also possible to use memmapfile() to open a common file -- though I am not certain how well that would work with multiple updates.

For OS-X and Linux there is a File Exchange contribution for shared matrices.

You could use TCP or UDP, as long as you can predict the port numbers of each thread.

At the moment, the only way I can think of to be able to handle a GUI is to use parfeval() or batch(); Edric Ellis suggests the example http://www.mathworks.com/help/distcomp/examples/parfeval-blackjack.html on this topic.

Answer 1

[Walter Roberson]

Mathworks has a policy of not publicly releasing information about future features. Anyone who knows the answer is not permitted to reveal it in public. You can contact Mathworks Sales for comment under Non Disclosure Agreement.

Speaking as someone who has not been told anything on the topic by Mathworks, my expectation is that the answer is "Not until at least Mathworks replaces Java with something else as the underlying basis of the user interface".

Answer 2

[sen sun]

i am doing similar thing,i want to build several-computer-communication using tcpip socket in spmd ,i will appreciate if you have any advice,look forward to your reply

Answer 3

[Minggui Chen]

You could use tcp protocols directly. I never tried tcp communication with spmd.