HPC | 高效能運算

  • 高效能運算是什麼?
    高效能運算(High Performance Computing)簡稱HPC,係指能高速處理數據或執行指令的運算能力,特別形容每秒浮點運算次數(FLOPS)超越一兆次(teraFLOPS)的作業系統。全球領先的超級電腦每秒浮點運算次數已突破一千兆(petaFLOPS),下一個里程碑將是每秒一百萬兆浮點運算次數(exaFLOPS),即所謂的「百萬兆級運算」(exascale computing)。

    為達成此目標,須集結大量的CPU或GPU進行平行運算運算叢集是常見的高效能運算解決方案之一,數台電腦(或稱nodes「節點」)互相串聯成為群組,運算能力遠超過單一電腦主機,多數節點可協同解決一台電腦無法處理的問題。

  • 為何需要?
    無論透過運算叢集或頂尖大型電腦,為組織添加高效能運算能力都是必要任務。高效能運算可解決科學、工程學及商務上的許多問題,例如:

    科學:學術研究機構的科學團隊可利用高效能運算探討宇宙的誕生、探索粒子物理學、或模擬和預測天氣氣候變化。

    媒體娛樂業:例如算圖農場的高效能運算解決方案,可繪製動畫與特效、剪接影片、或將特殊活動直播給全球觀眾。

    人工智慧:機器學習是高效能運算的一種運用方法,目前備受矚目,可將人工智慧應用於各種不同領域,包括自駕車、臉部辨識軟體、語音辨識與翻譯、或無人機操作。

    石油與天然氣:高效能運算可處理衛星影像、海床聲納探查結果等數據,發現值得開採的原油或天然氣礦床。

    金融服務:高效能運算可追蹤股價或執行算法交易,也可分析交易紀錄以察覺非法行為。

    醫療健保:可透過高效能運算開發糖尿病等重大疾病的解方,或提升診斷速度與準確度,例如癌症篩檢技術。

  • 技嘉的特色
    技嘉H系列高密度伺服器G系列GPU協同運算伺服器,將大量運算能力集中在1U、2U或4U伺服器機殼內,特別適用於高效能運算解決方案。伺服器間透過Ethernet、Infiniband或Omni-Path等網路架構互相通聯,可組成運算叢集。高效能運算伺服器的範例包括技嘉H262系列,搭配AMD EPYC™ 7002系列處理器,可於2U伺服器機殼內達成512核心/1024執行緒數的運算能力(單一系統含四節點,各節點含兩顆64核心的AMD EPYC™處理器)。如果使用完整42U的位置(僅保留網路交換器的額外空間),可達成10240核心/20480執行緒數的超高效能,明顯提升整體運算能力。

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