COSCUP
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    國網台灣杉一號使用經驗 - mcdlee === ###### tags: `COSCUP2020` `中階` `RB105` {%hackmd 7CD4pdKQTa2p6Y3VqH3VrQ %} > 請從這裡開始 ## 自我介紹 * 高雄榮民總醫院核子醫學科醫師 * 2006 接觸 Linux (Ubuntu) * 2009 接觸 OpenStreetMap * 受自由軟體文化浸泡入味的醫療人員 ## 還願 * 2019/9/10 Facebook 貼文 ## 核子醫學 * 將放射性同位素應用於臨床用途(不同於直接使用放射線進行醫療) * 簡體檢驗 * 影像診斷 * 治療 * 破壞目標細胞、腫瘤 ## 碩士論文 * 蒙地卡羅模擬進行釔-90放射栓塞治療的輻射劑量分布 * 使用亂數來解決很多計算問題的演算法 * 確定演算法是算出機率。蒙地卡羅是在一個虛構的環境直接跑跑看,在這個虛構的環境拼命丟骰子 ## Beta ray 的命運 * 減速過程中將能量留到經過處 ## Monte Caarlo Simulation 的角色 [GATE(GEANT4 application for tomographic emission)](http://www.opengatecollaboration.org/) 為開源的蒙地卡羅模擬軟體 * 計算物質分佈、輻射劑量 ## 暴力 * 需要很快的電腦進行運算 ### 本來的作法 * 原價屋買的電腦(~60000NTD) ## Ubuntu 的世界很單純 * 只要系統是 Ubuntu 安裝就不困難 * 教學文章複製貼上,dependency 就裝好了! * 用 ssh 連結筆電和主機(主機放在家裡的機櫃) * 用 scp 傳檔案 * 用 tmux 管理 session * 辦公室開完工作後回家看進度 * server沒關掉session就不會死掉 * 可分割視窗同時開多個終端機(下指令、看產出、同時做很多實驗) * 運用 command > log.txt 把輸出留下來並監控進度 * 用 tail 命令看log * 就這樣順利畢業了 ## 去年和今年有研究計畫 * 觀察病患的治療效果 * 申請醫院的研究計畫,有錢就要花掉不然會被追殺 * 經費不能買硬體,但廠商不給租借 * 改用台灣杉 ## 台灣杉 * 要使用 ssh 登入的話要申請主機帳號 * [國網中心 iService](https://iservice.nchc.org.tw/nchc_service/index.php) * 論文成果須登錄 * 除密碼外要使用 OTP 驗證 * 要自己灌軟體在家目錄(不像 Ubuntu 的世界很單純,系統是 RedHat) * 可以使用 scp 和 sftp(要過 OTP) * 可以使用 tmux 的分割視窗功能但不能延長 session ### 安裝方式 * ROOT→GEANT4→GATE * CMAKE要什麼就裝什麼 * 主機提供的 CMAKE 版本太舊要用自己編的 ### 收費方式 https://iservice.nchc.org.tw/nchc_service/nchc_service_qa.php?target=54 * 使用到計算叢集的計算節點才收費 * 購買額外的儲存空間要收費 * 如果是科技部計畫直接打1折 * 收費非每月結算用預付卡 ### 提交 job 的方法 * 把要運算的資料和 script 準備好 * 加上一個執行它的 bash script * 要寫架構需要的特殊註解指定運行時間上限等細節 * 記得 dos2unix * chmod u+x foo.sh * qsub foo.sh ### 運算效能 * 運算時間從 20 小時變 42 小時,可能是 CPU 時脈造成 * 並行、GPU 運算待利用 ### 肯定體驗 * 客服親切 * 中文文件且持續更新 ## LIVE DEMO ## Q&A

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