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1 Using “Number Machi nes” at DAM, NUK 國國國國國國國國國國國 2006 國 10 國 20 國

Using “Number Machines” at DAM, NUK

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Using “Number Machines” at DAM, NUK. 國立高雄大學應用數學系 2006 年 10 月 20 日. What are the ‘”number machine”? How to log in the “number machine”? How to upload/download files? How to edit C/C++ codes?. How to compile source codes? How to run execution files? Basic Linux command How to use VNC?. - PowerPoint PPT Presentation

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Page 1: Using “Number Machines” at DAM, NUK

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Using “Number Machines” at DAM, NUK

國立高雄大學應用數學系2006 年 10 月 20 日

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Outline

What are the ‘”number machine”?

How to log in the “number machine”?

How to upload/download files?

How to edit C/C++ codes?

How to compile source codes?

How to run execution files?

Basic Linux command

How to use VNC?

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What are the ”number machine”?

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What are the ”number machine”?

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How to log in the “number machine”?

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How to upload/download files to/from the “number machine”?

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Set environment parameters

Edit your ”.bash” file in the home directory

# .bashrc# User specific aliases and functions

# Source global definitionsif [ -f /etc/bashrc ]; then . /etc/bashrcfisource /APSoft/env9.sh

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How to compile and run program?

Fortran

Edit (hello.f90)

Program Helloimplicit none

write(*,*) ‘Hello, World.’end

Compile> ifort hello.f90

Run> ./a.out

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How to call library from Fortran? LAPACK

Edit (call_gesv.f90)program gall_gesv use la_precision, only: wp => dp use f95_lapack, only: la_gesv

! --------------- ! local variables ! --------------- implicit none character (len=*), parameter:: fmt='(7(1x,f9.3))' integer :: ii, jj, ndim, nrhs real(wp), allocatable :: mtx_A(:,:), mtx_B(:,:) ! -------------- ! initialization ! --------------

ndim = 5 nrhs = 2 allocate(mtx_A(ndim,ndim), mtx_B(ndim, nrhs))

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How to call library from Fortran? ! ----------------------- ! define the problem Ax=B ! -----------------------

! --- define matrix A

do ii=1,ndim do jj=1,ndim mtx_A(ii,jj)=real(ii,wp)**real(jj,w

p) end do end do

! --- define matrix B

do jj=1,nrhs mtx_B(:,jj) = sum(mtx_A, dim=2)*jj end do

! ------------------------------- ! solve the linear system by gesv ! -------------------------------

call la_gesv(mtx_A, mtx_B)

! ---------------------------- ! output the computed solution ! ---------------------------- write(*,*) 'Matrix A:' do jj=1,ndim write(*,fmt) mtx_A(:,jj) end do

write(*,*) 'Matrix B:' do jj=1,nrhs write(*,fmt) mtx_B(:,jj) end do

write(*,*) 'The solution:' do jj=1,nrhs write(*,fmt) mtx_B(:,jj) end do

end program gall_gesv

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Make (compile and link)

Run the program

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How to edit codes?

Emacs 啟動 :

[b45_chad@umath b45_chad]$emacs <== 輸入 "emacs" 開啟 !!!

一些基本指令 : 結束 Emacs: Ctrl-x Ctrl-c 取消執行 : Ctrl-g

開啟新檔案 : Ctrl-x Ctrl-f 輸入檔名,例如 :hello.c

刪除游標目前指的 / 後面的字 Ctrl-d

存檔 :Ctrl-s

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How to compile and run program?

C:Last login: Wed Feb 23 2005 13:19:24 +0800 from 140.127.223.114

No mail.

[b45_chad@umath b45_chad]$ gcc hello.c –o hello

[b45_chad@umath b45_chad]$ ./hello

Hello!!

[b45_chad@umath b45_chad]$

C++:Last login: Wed Feb 23 2005 13:19:24 +0800 from 140.127.223.114

No mail.

[b45_chad@umath b45_chad]$ g++ hello.cpp –o hello

[b45_chad@umath b45_chad]$ ./hello

Hello!!

[b45_chad@umath b45_chad]$

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How to invoke Matlab?

圖形介面: > matlab

文字模式 (no java virtual machine) :> matlab –nojvm

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Basic Linux command 顯示目前的目錄 :pwd 分頁顯示 :less (路徑 ) ex: less hello.c 更改密碼 :passwd 變換目錄 :cd ex:cd math (到 math這個目錄 ) 到根目錄 :cd / 建立一個新目錄 :mkdir ex:mkdir math (建立 math這個目

錄 ) 刪除一個空目錄 :rmdir ex:rmdir math (刪除 math這個目

錄 )

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Basic Linux command

列出資料夾檔案 :ls [-ailS] ex: ls -a 參數說明: -a :全部的檔案都列出(連同隱藏檔) -i :印出 inode 的值 -l :長的列出,連同檔案大小的資料等等 -s :以檔案大小排序

複製檔案 :cp [來源檔 ] [目的地 ] ex: cp hello.c math (複製 hello.c到 math資料夾 )

刪除檔案 :rm [檔名 ] ex: rm hello.c (刪除 hello.c)

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VNC (Virtual Network Computing)

VNC 可將遠端平台的畫面顯示至本地端,並可遙控操作。

遠端與本地端的平台作業系統無須相同, Linux, Windows,... 等皆可。

參考網址: http://www.uk.research.att.com/vnc/ http://www.realvnc.org/ http://www.vnc.org/

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VNC

伺服器端 (zero.math.nuk.edu.tw)

> vncserver :2 啟動 port 5802 上的 vnc server > vncpasswd 設定 vnc server 密碼 > vncserver -kill :2 關閉 port 5802 上的 vnc server

本機端 (Windows)

Method 1: 利用瀏覽器連結 5802 port 上的 vnc server 網址為 http://zero.math.nuk.edu.tw:5802

Method 2: 利用 vnc viewer 連結 5802 port 上的 vnc server 開啟 vnc viewer 後填入 zero.math.nuk.edu.tw:2

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VNC

注意事項 1. 使用完後,務必在伺服器端將 vnc server 關閉。

( 指令為 : vncserver -kill :2)

2. 若某個 port 被使用,請嘗試其他的 port 。 port 可選取範圍為 1-60 (5801-5860) 。

3. 依學號末位決定登入主機。

4. 在 101 室時 port 的選擇等同於該電腦的順序。計算方法如下 : i-j 號電腦的順序數為 (i-1)*6 + j例如:第 3-5 號電腦的順序數為 (3-1)*6 + 5 = 17