topic Re: Call Function starting new Task - Close used and useless task in Application Development and Automation Discussions

Call Function starting new Task - Close used and useless task

former_member528154 — Tue, 14 Jan 2014 14:19:31 GMT

Hi all, I have to elaborate more than 2 millions of record, I have divided these record making a small packages and running my function "in update task" with all my different packages of data.

Now I'm having a problem with the available channels because for example I must launch 10 parallel procedures but I have only 9 available channels, if I start with these 9 channels it seems it will be busy until the end of the 10th package.

Why the 9 channels wait for the end of 10th? If the execution of their program finish I expect that the 9 channel return to be available. I should close the channel and set it as available after the end of any single function execution.

How can I solve my problem?

Thank you

For example:

do n times

call function 'FUNCTION'

starting new task lv_name

          destination in group 'parallel_generators'
          performing f_return_info on end of task
enddo

Re: Call Function starting new Task - Close used and useless task

RaymondGiuseppi — Tue, 14 Jan 2014 14:53:31 GMT

Did you first call SPBT_INITIALIZE to get number of free processes. Then every time you successfully create a task increment a counter of current running tasks. Decrement the counter in the end of task method/form. Check maximum number of running tasks reached before creating a new task, if reached use a WAIT UNTIL one process ends and decrements current number of running tasks to less than maximum number.

More information at help.sap.com : Implementing Parallel Processing

Regards,

Raymond

Re: Call Function starting new Task - Close used and useless task

former_member528154 — Tue, 14 Jan 2014 15:31:40 GMT

Yes,

There is a procedure with SPBT_INITIALIZE to calculate how many processes I can run but I want to keep some available channels; so for example I have 10 free channel but I want divide my session in 8 + 2 to keep 2 channels free for other different processes.

Re: Call Function starting new Task - Close used and useless task

RaymondGiuseppi — Tue, 14 Jan 2014 15:46:23 GMT

In RZ12 when you define server groups, there is an option to keep a "Minimum Number of Free WPs" (SPBT_INITIALIZE respects this limit ?)

Regards,

Raymond

Re: Call Function starting new Task - Close used and useless task

former_member528154 — Tue, 14 Jan 2014 16:51:19 GMT

Thank you Raymond but It's not what I need anyway I think these information will be very usefull for me; I need to close a task when its program end the execution getting available its channel for another task