Re: [Discuss-gnuradio] Question on number of input items per work call

You're welcome, Anil; glad that was useful.

You can go either way with a block like the one you describe: general or sync. The block is sync when the correct parameters are set ("set_output_multiple(512);") or the like; and, really, the scheduler will handle the I/O correctly if you choose this block inheritance. If you choose to not use the GR features that provide the scheduler with hints of what to do, then going with a general block will give you more flexibility. There are internal (to the scheduler) trade-offs for either way, but both are workable options.

Cheers! - MLD

On Sun, Nov 19, 2017, at 01:00 PM, Anil Kumar Yerrapragada wrote:

Thank you very much for your response. This clears up things for me.

One other question regarding this is: If the block takes in 4095 samples, returns 3854 onto its output is this still considered a sync (1:1) block or would it be a general block?

I am leaning towards thinking that any block that does not return the same number of samples as it took in in each call of work would be a general block since the ratio of input to output is not 1:1.