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Design and Implementation of ShenWei Universal C/C++ | | Huanqi Cao
; Jiajie Chen
; | | Date: |
1 Aug 2022 | | Abstract: | The ShenWei many-core series processors powering multiple cutting-edge
supercomputers are equipped with their unique on-chip heterogeneous
architecture. They have long required programmers to write separate codes for
the control part on Management Processing Element (MPE) and accelerated part on
Compute Processing Element (CPE), which is similar to open standards like
OpenCL. Such a programming model results in shattered code and bad
maintainability, and also make it hard to migrate existing projects targeting
commodity processors. Borrowing the experience from CUDA and DPC++ and
leveraging the unique unified main memory on ShenWei many-core architecture, we
propose ShenWei Universal C/C++ (SWUC), a language extension to C/C++ that
enables fluent programming acrossing the boundary of MPE and CPE. Through the
use of several new attributes and compiler directives, users are able to write
codes running on MPE and CPE in a single file. In case of C++, SWUC further
support lambda expressions on CPEs, making it possible to have the code flow
better matching the logical design. SWUC also manages to make the Athread
library interfaces available, easing the learning curve for original ShenWei
users. These powerful features together ensures SWUC to simplify the
programming on ShenWei many-core processors and migration of existing C/C++
applications. | | Source: | arXiv, 2208.00607 | | Services: | Forum | Review | PDF | Favorites | |
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