usmlinkedlist

Sample demonstrates how to use Unified Shared Memory to represent pointer-based data structure like Linked List.

Based on the fact that USM allocators return pointers you can use them in standard pointer operations like:

• assignment - a = b;
• incrementation - a++;
• decrementation - a--;
• comparison - a == b;
• indirection - *a;
• member of pointer - a->b;

Please note that device memory is not accessible on host, so you can't dereference it.

If a kernel uses a memory allocation indirectly i.e. memory is not passed as a kernel argument then it should be specified using clSetKernelExecInfo. It can be done explicitly by passing all pointers as CL_KERNEL_EXEC_INFO_​USM_PTRS_INTEL or implicitly by setting CL_KERNEL_EXEC_INFO_​INDIRECT_HOST/DEVICE/SHARED_ACCESS_INTEL.

Usage

usm_linked_list host
usm_linked_list device
usm_linked_list shared
usm_linked_list host --size 1024