SYCL

Overview

The oneAPI programming language is a combination of SYCL and a set of SYCL extensions that are listed below. The SYCL programming language is based on standard C++ and provides features to define data parallel functions and to launch them on accelerator devices. Unlike some other parallel languages, SYCL allows an application to mix both host code and device code together in the same source file, which provides a more intuitive parallel programming environment.

A conformant oneAPI implementation must implement the SYCL 2020 Specification, which is published by The Khronos Group.

A conformant oneAPI implementation must also implement the set of SYCL extensions listed in the Extensions Table. These extensions provide additional functionality beyond what is specified in the SYCL language. Some of these extensions are required only on certain devices types, as indicated in the table.

Table of SYCL Extensions

Extension	CPU	GPU	FPGA
C-CXX-StandardLibrary	Required	Required	Not required [1]
sycl_ext_oneapi_accessor_properties	Required	Required	Required
sycl_ext_oneapi_assert	Required	Required	Required
sycl_ext_oneapi_backend_level_zero	Required [2]	Required [2]	Required [2]
sycl_ext_oneapi_default_context	Required	Required	Required
sycl_ext_oneapi_discard_queue_events	Required	Required	Required
sycl_ext_oneapi_dot_accumulate	Required	Required	Required
sycl_ext_oneapi_enqueue_barrier	Required	Required	Required
sycl_ext_oneapi_filter_selector	Required	Required	Required
sycl_ext_oneapi_local_memory	Required	Required	Required
sycl_ext_oneapi_srgb	Required	Required	Required
sycl_ext_oneapi_sub_group_mask	Required	Required	Required
sycl_ext_oneapi_use_pinned_host_memory_property	Required	Required	Required
sycl_ext_oneapi_usm_device_read_only	Required	Required	Required
sycl_ext_intel_buffer_location	Not required	Not required	Required
sycl_ext_intel_dataflow_pipes	Not required	Not required	Required
sycl_ext_intel_device_info	Required	Required	Required
sycl_ext_intel_fpga_device_selector	Required	Required	Required
sycl_ext_intel_fpga_lsu	Not required	Not required	Required
sycl_ext_intel_fpga_reg	Not required	Not required	Required
sycl_ext_intel_kernel_args_restrict	Required	Required	Required
sycl_ext_intel_mem_channel_property	Not required	Not required	Required
sycl_ext_intel_usm_address_spaces	Required	Required	Required

[1]

Likely to be required in the future

[2] (1,2,3)

Required if the device backend is Level Zero.