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authorSiCong Li <sicong.li@arm.com>2023-01-12 12:54:49 +0000
committerSiCong Li <sicong.li@arm.com>2023-01-20 15:21:31 +0000
commit5a2bc0169d942f7029d73a3afff1eab18b6f65ef (patch)
treeefa7850199b40109b73b0ee35bb8f57531c983e9 /arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h
parenta18d85c6d2c0025938c2dc10e553eb82c01922f2 (diff)
downloadComputeLibrary-5a2bc0169d942f7029d73a3afff1eab18b6f65ef.tar.gz
Add Auxiliary tensors
The asssign_memory_descriptors method could not automatically assign Auxiliary tensors. Therefore changes are made to allow developers to explicitly mark auxiliary tensors. However, to avoid ambiguity between auxiliary and "intermediate" tensors, we solidify the definitions of both: Intermediate tensors are a strictly topological term. They are defined as "inner" tensors within a workload, hidden from the user, as opposed to input and output tensors exposed to the users. Auxiliary tensors are a subcategory of Intermediate tensors, and are also about memory allocation. They are intermediate tensors that need real memory backing. For more details please see the documentation of MemoryType enum Rename MemoryType::NoAlloc to MemoryType::Virtual Partially resolves: COMPMID-5523 Signed-off-by: SiCong Li <sicong.li@arm.com> Change-Id: Ibde44c2ec1570be9423e0fb38b53bb136ffc36dd Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8940 Benchmark: Arm Jenkins <bsgcomp@arm.com> Tested-by: Arm Jenkins <bsgcomp@arm.com> Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com> Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Diffstat (limited to 'arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h')
-rw-r--r--arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h27
1 files changed, 23 insertions, 4 deletions
diff --git a/arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h b/arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h
index 25023ff0a1..3daedd4efb 100644
--- a/arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h
+++ b/arm_compute/dynamic_fusion/sketch/MemoryDescriptor.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2022 Arm Limited.
+ * Copyright (c) 2022-2023 Arm Limited.
*
* SPDX-License-Identifier: MIT
*
@@ -32,12 +32,31 @@ namespace experimental
{
namespace dynamic_fusion
{
-/** Type of memory used by a workload tensor */
+/** Type of memory used by a workload tensor
+ *
+ * We can classify tensors in 2 dimensions: Topology (where they are in a workload) and Memory allocation:
+ * Topology:
+ * Argument tensors: "Outer" tensors exposed to the users as inputs and outputs (arguments)
+ * Intermediate tensors: "Inner" tensors hidden from the users as links between operators
+ * Memory allocation:
+ * Alloc: Tensors that need to be allocated real backing memory
+ * No-Alloc: Tensors that don't need to be allocated real backing memory
+ *
+ * We end up with 3 MemoryType based on the product of these two classifications
+ * | Argument | Intermediate |
+ * ---------*----------------*-------------------*
+ * Alloc | User | Auxiliary |
+ * ---------*----------------*-------------------*
+ * No-Alloc * N/A | Virtual |
+ * ---------*----------------*-------------------*
+ */
enum class MemoryType
{
+ /** Both User and Auxiliary types are of Alloc type. Since they require memory allocation */
User = 0, /**< Memory coming directly from users, e.g. for argument tensors */
- Auxiliary = 1, /**< Additional memory required by the workload tensor, e.g. for temporary tensors */
- NoAlloc = 2, /**< Temporary tile which is not allocated as a whole tensor in the memory */
+ Auxiliary = 1, /**< Additional memory required by the workload tensor, e.g. for tensors holding temporary results between kernels */
+ /** Virtual type is of No-Alloc type. Since it doesn't require memory allocation */
+ Virtual = 2, /**< Temporary tile which is not allocated as a whole tensor in the memory. It is mainly used at sketch time to link operators; there should be no Virtual tensors at runtime */
};
/** Memory information for tensors with @ref MemoryType::Auxiliary.