Hi, I need a little input on how to accomplish this. My project is structured as follows : Input A – Thread Input A —–+ Input B – Thread Input B —–+ Input C – Thread Input C —–+—– Thread Output A – Output A Input D – Thread Input D —–+—– Thread Output B – Output B Input E – Thread Input E —–+—– Thread Output C – Output C Input F – Thread Input F —–+—– Thread Output D – Output D Input G – Thread Input G —–+ Input H – Thread Input H —–+ Thread Input X running the same code on different input. Thread Output X running the same code on different output. I have to be able to send from one Thread Input X an event / message or another to all Thread Output X (also not in the same instant). In my first approach I used a message queue. In Thread Output X I have create 4 message queue on which the Thread Input X write (Thread Output X only read). On event in Thread Input X I write the same message on all 4 message queue, but it does not seem like the ideal solution. What technique can I use ? Event Group ? Thanks for any suggestions. debugasm

How detailed is the event? If it can be conveyed as a single bit then an event group would let all the tasks block on the same bits in the same event group with each bit having a different meaning.

How detailed is the event?

Yes, a single bit is sufficient. Then with an EventGroup of 4-bit size I should be able to simplify things. I create one EventGroup with 4-bit size, each Thread Input X writes the corresponding bit to wake up Thread Output X. On Thread Output X waiting an EventGroup on single bit. It should go, I try. Thanks very much. debugasm