Consumer Kernel with pipe

ZVere — Fri, 22 Jan 2016 21:43:15 GMT

Hello,

The following code is in a "consumer kernel":

//reserve pipe for reading
reserve_id_t rid = work_group_reserve_read_pipe(rng_pipe, szgr);
if(is_valid_reserve_id(rid)) {
  //read random number from the pipe.
  read_pipe(rng_pipe,rid,lid, &rn);
  work_group_commit_read_pipe(rng_pipe, rid);
  }

Is it possible that read_pipe will be blocked till it gets a vector of data written from a producer kernel ?

Regards,

Z.V

Hi Zvi,

Robert_I_Intel — Fri, 22 Jan 2016 21:50:57 GMT

Hi Zvi,

We don't have concurrent kernels in the production driver, so producer kernel has to finish first and then consumer kernel will start. As you can imagine, this is not terribly useful, that's why I don't recommend currently to use pipes. But, to answer your question, in our current implementation of the driver it cannot happen for the above reason.

topic Hi Zvi, in OpenCL* for CPU

Consumer Kernel with pipe

Hi Zvi,