> The correct MCA parameters are the following:
> -mca coll_tuned_use_dynamic_rules 1
> -mca coll_tuned_dynamic_rules_filename ./dyn_rules
Ohh..it was my mistake....
> You can also run the following command:
> ompi_info -mca coll_tuned_use_dynamic_rules 1 -param coll tuned
> This will give some insight into all the various algorithms that make
> up the tuned collectives.
> If I am understanding what is happening, it looks like the original
> MPI_Alltoall made use of three algorithms. (You can look in
> If message size < 200 or communicator size > 12
> else if message size < 3000
> basic linear
Yep it is correct.
> With the file Pavel has provided things have changed to the following.
> (maybe someone can confirm)
> If message size < 8192
You are right here. Target of my conf file is disable basic_linear for
medium message side.