[SYCL][USM] Initial commit of flattening for kernel submission on queue

[jbrodman]

Add utility methods to flatten kernel submission to 1 lambda when using USM.

Events for depends_on are passed as an extra function arg.

Signed-off-by: James Brodman [email protected]

[Pennycook]

This looks good to me, but I do have a comment.

Currently the events vector is the last argument before the kernel functor in all cases. We should think about where it would go once we introduce reductions -- should the events vector still be the last argument before the functor, or should it be the last argument before the reductions?

More generally we might want to spend some time coming up with rules for the ordering of parameters to parallel_for, to ensure we're being consistent and that code remains easy to read.

[jbrodman]

Are we good to merge? @bader

[bader]

Are we good to merge?

GitHub does not allow merging - "At least 1 approving review is required".

@Pennycook, please, review the latest version.

[jbrodman]

@bader Ping.

[bader]

Please, resolve @romanovvlad comment.
Is there any dependency between #911 and #937?

[jbrodman]

Please, resolve @romanovvlad comment.
Is there any dependency between #911 and #937?

No, there is no dependency.