SYCL interoperability API

Intel® oneAPI Deep Neural Network Developer Guide and Reference

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ID 768875

Date 3/31/2023

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SYCL interoperability API

Overview

API extensions to interact with the underlying SYCL run-time. More…

// typedefs

typedef void* (*dnnl_graph_sycl_allocate_f)(
    size_t size,
    size_t alignment,
    const void *dev,
    const void *context
    );

typedef void (*dnnl_graph_sycl_deallocate_f)(
    void *buf,
    const void *dev,
    const void *context,
    void *event
    );

// global functions

dnnl_status_t DNNL_API dnnl_graph_sycl_interop_allocator_create(
    dnnl_graph_allocator_t* allocator,
    dnnl_graph_sycl_allocate_f sycl_malloc,
    dnnl_graph_sycl_deallocate_f sycl_free
    );

dnnl_status_t DNNL_API dnnl_graph_sycl_interop_make_engine_with_allocator(
    dnnl_engine_t* engine,
    const void* device,
    const void* context,
    const_dnnl_graph_allocator_t alloc
    );

dnnl_status_t DNNL_API dnnl_graph_sycl_interop_compiled_partition_execute(
    const_dnnl_graph_compiled_partition_t compiled_partition,
    dnnl_stream_t stream,
    size_t num_inputs,
    const_dnnl_graph_tensor_t* inputs,
    size_t num_outputs,
    const_dnnl_graph_tensor_t* outputs,
    const void* deps,
    void* sycl_event
    );

Detailed Documentation

API extensions to interact with the underlying SYCL run-time.

Typedefs

typedef void* (*dnnl_graph_sycl_allocate_f)(
    size_t size,
    size_t alignment,
    const void *dev,
    const void *context
    )

Allocation call-back function interface for SYCL.

SYCL allocator should be used for SYCL runtime and host allocator should be used for non-SYCL. The call-back should return a USM device memory pointer.

typedef void (*dnnl_graph_sycl_deallocate_f)(
    void *buf,
    const void *dev,
    const void *context,
    void *event
    )

Deallocation call-back function interface for SYCL.

SYCL allocator should be used for SYCL runtime and host allocator should be used for non-SYCL. The call-back should deallocate a USM device memory returned by dnnl_graph_sycl_allocate_f.

Global Functions

dnnl_status_t DNNL_API dnnl_graph_sycl_interop_allocator_create(
    dnnl_graph_allocator_t* allocator,
    dnnl_graph_sycl_allocate_f sycl_malloc,
    dnnl_graph_sycl_deallocate_f sycl_free
    )

Creates an allocator with the given allocation and deallocation call-back function pointers.

Parameters:

allocator	Output allocator
sycl_malloc	A pointer to SYCL malloc function
sycl_free	A pointer to SYCL free function

Returns:

dnnl_success on success and a status describing the error otherwise.

dnnl_status_t DNNL_API dnnl_graph_sycl_interop_make_engine_with_allocator(
    dnnl_engine_t* engine,
    const void* device,
    const void* context,
    const_dnnl_graph_allocator_t alloc
    )

This API is a supplement for existing onednn engine API.

dnnl_status_t DNNL_API dnnl_graph_sycl_interop_compiled_partition_execute(
    const_dnnl_graph_compiled_partition_t compiled_partition,
    dnnl_stream_t stream,
    size_t num_inputs,
    const_dnnl_graph_tensor_t* inputs,
    size_t num_outputs,
    const_dnnl_graph_tensor_t* outputs,
    const void* deps,
    void* sycl_event
    )

Execute a compiled partition with sycl runtime.

Parameters:

compiled_partition	The handle of target compiled_partition.
stream	The stream used for execution
num_inputs	The number of input tensors
inputs	A list of input tensors
num_outputs	The number of output tensors
outputs	A non-empty list of output tensors
deps	Optional handle of list with `sycl::event` dependencies.
sycl_event	The handle of sycl event.

Returns:

dnnl_success on success and a status describing the error otherwise.

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Intel® oneAPI Deep Neural Network Developer Guide and Reference

SYCL interoperability API

Overview

Detailed Documentation