iotamudelta / roc-stdpar

ROCm Standard Parallelism Runtime Implementation

This repository contains:

1. The runtime component that enables ROCm to support GPU accelerated computation via C++ Standard Algorithms. This is an implementation detail and thus intended to be transparently composed with compiler and low-level runtime components. More specifically, since it is meant to be implicitly included by the compiler, and forwards various calls to the HIP and rocThrust libraries, its standalone uses are limited. For detailed documentation on ROCm GPU acceleration for Standard C++ Algorithms, please see the RFC and the patch set.
2. A set of diffs, under the data folder, which capture the changes needed to enable Standard Algorithm offload in LLVM (this is a pre-requisite), as well as in a number of client apps;
3. A slowly growing set of minimalistic performance studies, under the docs folder, intended to give a sense of the possible performance benefits / pitfalls associated with offload;
4. A minimal but slowly growing set of unit tests.

Algorithm Support Status

Algorithm	Status	Observations
adjacent_difference	SUPPORTED
adjacent_find	SUPPORTED	Uses mismatch
all_of	SUPPORTED
any_of	SUPPORTED
copy	SUPPORTED
copy_if	SUPPORTED
copy_n	SUPPORTED
count	SUPPORTED
count_if	SUPPORTED
destroy	SUPPORTED
destroy_n	SUPPORTED
equal	SUPPORTED
exclusive_scan	SUPPORTED
fill	SUPPORTED
fill_n	SUPPORTED
find	SUPPORTED
find_end	UNSUPPORTED	Missing from rocThrust
find_first_of	UNSUPPORTED	Missing from rocThrust
find_if	SUPPORTED
find_if_not	SUPPORTED
for_each	SUPPORTED
for_each_n	SUPPORTED
generate	SUPPORTED
generate_n	SUPPORTED
includes	SUPPORTED
inclusive_scan	SUPPORTED
inplace_merge	UNSUPPORTED	Missing from rocThrust
is_heap	UNSUPPORTED	Missing from rocThrust
is_heap_until	UNSUPPORTED	Missing from rocThrust
is_partitioned	SUPPORTED
is_sorted	SUPPORTED
is_sorted_until	SUPPORTED
lexicographical_compare	SUPPORTED	Uses mismatch
max_element	SUPPORTED
merge	SUPPORTED
min_element	SUPPORTED
minmax_element	SUPPORTED
mismatch	SUPPORTED
move	SUPPORTED
none_of	SUPPORTED
nth_element	UNSUPPORTED	Missing from rocThrust
partial_sort	UNSUPPORTED	Missing from rocThrust
partial_sort_copy	UNSUPPORTED	Missing from rocThrust
partition	SUPPORTED
partition_copy	SUPPORTED
reduce	SUPPORTED
remove	SUPPORTED
remove_copy	SUPPORTED
remove_copy_if	SUPPORTED
remove_if	SUPPORTED
replace	SUPPORTED
replace_copy	SUPPORTED
replace_copy_if	SUPPORTED
replace_if	SUPPORTED
reverse	SUPPORTED
reverse_copy	SUPPORTED
rotate	UNSUPPORTED	Missing from rocThrust
rotate_copy	UNSUPPORTED	Missing from rocThrust
search	UNSUPPORTED	Missing from rocThrust
search_n	UNSUPPORTED	Missing from rocThrust
set_difference	SUPPORTED
set_intersection	SUPPORTED
set_symmetric_difference	SUPPORTED
set_union	SUPPORTED
shift_left	UNSUPPORTED	Missing from rocThrust
shift_right	UNSUPPORTED	Missing from rocThrust
sort	SUPPORTED
stable_partition	SUPPORTED
stable_sort	SUPPORTED
swap_ranges	SUPPORTED
transform	SUPPORTED
transform_exclusive_scan	SUPPORTED
transform_inclusive_scan	SUPPORTED
transform_reduce	SUPPORTED
uninitialized_copy	SUPPORTED
uninitialized_copy_n	SUPPORTED
uninitialized_default_construct	SUPPORTED
uninitialized_default_construct_n	SUPPORTED
uninitialized_fill	SUPPORTED
uninitialized_fill_n	SUPPORTED
unitialized_move	SUPPORTED
unitialized_move_n	SUPPORTED
uninitialized_value_construct	SUPPORTED
uninitialized_value_construct_n	SUPPORTED
unique	SUPPORTED
unique_copy	SUPPORTED

Allocation / Deallocation Interposition Status

Function	Status
aligned_alloc	SUPPORTED
calloc	SUPPORTED
free	SUPPORTED
malloc	SUPPORTED
memalign	SUPPORTED
posix_memalign	SUPPORTED
realloc	SUPPORTED
realloc_array	SUPPORTED
operator delete[](void*)	SUPPORTED
operator delete[](void*, std::size_t)	SUPPORTED
operator delete[](void*, std::align_val_t)	SUPPORTED
operator delete[](void*, std::size_t, std::align_val_t)	SUPPORTED
operator delete(void*)	SUPPORTED
operator delete(void*, std::size_t)	SUPPORTED
operator delete(void*, std::align_val_t)	SUPPORTED
operator delete(void*, std::size_t, std::align_val_t)	SUPPORTED
operator new[](std::size_t)	SUPPORTED
operator new[](std::size_t, std::nothrow_t)	SUPPORTED
operator new[](std::size_t, std::align_val_t)	SUPPORTED
operator new[](std::size_t, std::align_val_t, std::nothrow_t)	SUPPORTED
operator new(std::size_t)	SUPPORTED
operator new(std::size_t, std::nothrow_t)	SUPPORTED
operator new(std::size_t, std::align_val_t)	SUPPORTED
operator new(std::size_t, std::align_val_t, std::nothrow_t)	SUPPORTED
__builtin_calloc	SUPPORTED
__builtin_free	SUPPORTED
__builtin_malloc	SUPPORTED
__builtin_operator_delete	SUPPORTED
__builtin_operator_new	SUPPORTED
__builtin_realloc	SUPPORTED
__libc_calloc	SUPPORTED
__libc_free	SUPPORTED
__libc_malloc	SUPPORTED
__libc_memalign	SUPPORTED
__libc_realloc	SUPPORTED