SYCL Summer Sessions 2021
Thomas Applencourt, Argonne National Laboratory
In SYCL, contexts are used for memory isolation. This is a common source of error, mainly when using SYCL2020 Unified Shared Memory. In particular, a kernel submitted to a queue (Q1 for example) can only access memory that has been allocated in the same context as the one used to create Q1.
This 30min talk will illustrate those contexts subtleties via small reproducers extracted from real-life examples and provide recommendations on how one can avoid those pitfalls.