Port Contention Aware Task Scheduling for SIMD Applications
Single instruction multiple data (SIMD) instructions in central processing units (CPU) are becoming commonly used in usecases such as wireless signal processing and artificial intelligence (AI) inference. When SIMD operations are executed in a simultaneous multi-threading (SMT) environment, a perfor...
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| Format: | Article |
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10816398/ |
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| author | Shogo Saito Kei Fujimoto |
| author_facet | Shogo Saito Kei Fujimoto |
| author_sort | Shogo Saito |
| collection | DOAJ |
| description | Single instruction multiple data (SIMD) instructions in central processing units (CPU) are becoming commonly used in usecases such as wireless signal processing and artificial intelligence (AI) inference. When SIMD operations are executed in a simultaneous multi-threading (SMT) environment, a performance degradation event, called port contention, is expected to occur due to the limited number of ports caused by the large size of the SIMD circuit. In this paper, we analyze the occurrence of port contention during SIMD operation and clarify the characteristics that affect the performance of core allocation. On the basis of these performance characteristics, we propose a system that avoids the occurrence of port contention and improves performance. The proposed method features a core allocation policy to avoid port contention, identify SIMD applications, and coordinate with the operating system (OS) scheduler. Through evaluation, we find that the proposed method can reduce the processing time for some tasks in virtual radio access networks was reduced by 13.3%. |
| format | Article |
| id | doaj-art-4d2977cbb1d246669a478d3c73592814 |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-4d2977cbb1d246669a478d3c735928142025-01-14T00:02:13ZengIEEEIEEE Access2169-35362025-01-01136204621610.1109/ACCESS.2024.352326810816398Port Contention Aware Task Scheduling for SIMD ApplicationsShogo Saito0https://orcid.org/0000-0002-7965-0705Kei Fujimoto1https://orcid.org/0000-0001-7436-6978Network Innovation Center, NTT Corporation, Tokyo, JapanNetwork Innovation Center, NTT Corporation, Tokyo, JapanSingle instruction multiple data (SIMD) instructions in central processing units (CPU) are becoming commonly used in usecases such as wireless signal processing and artificial intelligence (AI) inference. When SIMD operations are executed in a simultaneous multi-threading (SMT) environment, a performance degradation event, called port contention, is expected to occur due to the limited number of ports caused by the large size of the SIMD circuit. In this paper, we analyze the occurrence of port contention during SIMD operation and clarify the characteristics that affect the performance of core allocation. On the basis of these performance characteristics, we propose a system that avoids the occurrence of port contention and improves performance. The proposed method features a core allocation policy to avoid port contention, identify SIMD applications, and coordinate with the operating system (OS) scheduler. Through evaluation, we find that the proposed method can reduce the processing time for some tasks in virtual radio access networks was reduced by 13.3%.https://ieeexplore.ieee.org/document/10816398/SIMDload balancingschedulermulti coreport contention |
| spellingShingle | Shogo Saito Kei Fujimoto Port Contention Aware Task Scheduling for SIMD Applications IEEE Access SIMD load balancing scheduler multi core port contention |
| title | Port Contention Aware Task Scheduling for SIMD Applications |
| title_full | Port Contention Aware Task Scheduling for SIMD Applications |
| title_fullStr | Port Contention Aware Task Scheduling for SIMD Applications |
| title_full_unstemmed | Port Contention Aware Task Scheduling for SIMD Applications |
| title_short | Port Contention Aware Task Scheduling for SIMD Applications |
| title_sort | port contention aware task scheduling for simd applications |
| topic | SIMD load balancing scheduler multi core port contention |
| url | https://ieeexplore.ieee.org/document/10816398/ |
| work_keys_str_mv | AT shogosaito portcontentionawaretaskschedulingforsimdapplications AT keifujimoto portcontentionawaretaskschedulingforsimdapplications |