IIG-HPC Cluster User Manual
Contents
1. amar on lighpc ligm res in Password Switch User Cancel Unlock iighpc iigm res in 8 amar VNC Viewer Oo 5 amar iighpc File Edit View Search Terminal Help Copyright C 2009 2013 Intel Corporation All rights reserved Intel R Inspector XE 2013 build 328075 Copyright C 2009 2013 Intel Corporation All rights reserved Intel R VTune TM Amplifier XE 2013 build 328102 Copyright C 2009 2013 Intel Corporation All rights reserved Intel R Advisor XE 2013 build 316162 amar Giighpc vncpasswd Password Verify amar iighpc amar iighpc amar iighpc amar iighpc 1 ll at E 2 From Linux Mac machine From Linux Open a terminal or CLI and enter ssh XY login name 192 168 1 15 as shown below 8 Page Terminal amar iighpc ajay ajay ThinkCentre A58 ssh XY amar 172 16 1 100 AL ajay ajay ThinkCentre A58 ssh XY amar 192 168 1 15 The authenticity of host 192 168 1 15 192 168 1 15 can t be established RSA key fingerprint is ad 0f d7 7f cb b4 55 21 a0 18 d0 43 e4 5a 12 e4 Are you sure you want to continue connecting yes no yes Warning Permanently added 192 168 1 15 RSA to the list of known hosts amar 192 168 1 15 s password ajay ajay ThinkCentre A58 clear ajay ajay ThinkCentre A58 ssh XY amar 192 168 1 15 amar 192 168 1 15 s password Last login Fri Aug 28 11 18 36 2015 from 192 168 10 204 TOGDIDEIDIDZIDIDIDIDZDIDIDIDI2. Page all q and new q are the two available queue For high memory jobs all q is used For other jobs new q can be used 10 How to change password of account Users are advised to change their password immediately after issue of a login account Do not share passwords with anyone 11 To submit a job on particular node example node 6 qsub q all q rack1 node6 script sh 12 How to give a parallel job on command line mpirun np 4 job name 13 What 1s the limit on memory of the each node 200GB is the maximum limit per node In the script file one can use 1 mem free 220G 14 How to logout type exit 25 Page
3. Parallel jobs on HPC How to submit via UGE Univa Grid Engine A Parallel Job Submission Script FORTRAN code bin bash N job name cwd q new q pe make 64 M amar iigs iigm res in m be Requesting 12hrs wall clock time lh_rt 12 00 00 mem free 264G e Err JOB_NAME JOB_ID o Out JOB_NAME JOB_ID opt intel imp1 4 1 3 048 intel64 bin mpirun job_name B Serial Job Submission Script FORTRAN bin bash N job_name cwd q new q pe make 1 M amar iigs iigm res in m be Requesting 12hrs wall clock time lh_rt 12 00 00 mem_free 64G ojob name out job 1d e job name err job id opt intel impi 4 1 3 048 intel64 bin mpirun job name In the above scripts N The name you want to give the job pe The parallel environment of the job This can be make openmp You must also specify the number of processors This can be 2 or more cwd Runs the job from the directory of submission 18 Page o File to send standard output e File to send standard error mem free sets the memory requirement upper limit is 200GB C Parallel Job Submission Script COMSOL code bin bash N job name cwd q new q pe make 64 M amar iigs iigm res in m be Requesting 12hrs wall clock time lh_rt 12 00 00 4 mem free 264G e Err JOB_NAME JOB_ID o Out JOB_NAME JOB_ID export I MPI FA
4. Sat Mar 7 10 16 AM E L Computer EN SSE TUM ea amar iighpe Desktop T File Edit wiew Search Fesminal Help rid Copyright C 28 amars Hame Intel R Inspect R2013 amars Ho r cC Mos is Copyright C 26 Intel R wvrunedT Eia E 0G Copyright C 28 Bbd bit Calressd Intel R Advisor February 15 2015 amarig ighpc Des armarmiighpc nes NIATLAB JJ MathWorks M VNE config amar amp ighpc Desktop 71 MATLAB ca TigerVNC iighpc iigm res in l amar m x Applications Places System s Sat Mar 7 10 17 AM amar ar Editor hoame amar test pro AB ESF1Id matlab fluid ho main m MATLAB RZ013a i Fe TOME AL TOES a hax Find FHes ES E Hs Omen variable m Open A LI Compare COCE EMVIEXTMMENT RESOURCES 1 z 3 et Workspace TIC Sr Re E global Mame 4 6 global L 7T global c B global E Inu global 10 global tX 11 global cz 12 global 13 global 14 global F 15 16 xcu 1y IHE amp LT PRI A Dspace Bs 18 CONDIT IO Command History 19 REMQRf F 20 COUNTER Bi INITIAN version DENSITY X 03 07 2015 71 VNE config 4 Editor home amaryt Cc EM amar iighpc Desktop i MATLAB R2013a Ed How to open comsol software Go to any available compute node using gt gt ssh rack1 node6 Type comsol at command prompt 14 Page gt gt comsol Ente
5. master node Some of the examples for parallel and serial jobs are given below If user wish to submit a job without a script file i e without qsub then it is mandatory to submit it on a compute node only NO JOBS SHOULD BE RUN SUBMITTED ON THE HEAD NODE DIRECTLY When software like MatLab Comsol IDL are used it should be accessed from compute node only nodeO to node7 You can access specific compute node of HPC cluster with following command ssh rack1 nodeX Here X is 0 to 7 For e g to access nodeQ you can enter following command 10 Page ll Basic Compilers Names Path Distributor GNU gcc version usr bin GNU 4 4 7 gcc g Compiler Intel Compilers mE MEE p opt intel composer xe 2013 spl 2 144 bin intel64 Cluster icc ifort Studio Math Libraries Names Path Description GNU ee Scientific usr lib How to use Library a a gsl on cetus Intel Cluster Intel MKL uu Studio Library opt intel composer xe 2013 spl 2 144 mkl lib intel64 Mathematical libs 11 Page 4 Application Software s on HPC We have MATLAB COMSOL and IDL on the HPC Currently MATLAB and IDL can be used to run only serial jobs whereas COMSOL is supported with parallel environment You can access these software through only VNC viewer Contact system administrator for the VNC viewer account Names Path Matlab Version 8 1 0 604 R20 13a usr local MATLAB R2013a bin IDL n usr local exelis Description MATLAB 1s a hi
6. numbers Intel XEON processor 2 x 6 total 12 cores RAM 8 x 8 GB total 64GB Connectivity Infiniband amp Ethernet Compute Nodes Fujitsu RX500 S7 Total 8 nodes CPU 4 numbers Intel XEON processor 4 x 8 total 32 cores node RAM 16 x 16 GB total 256 GB node Connectivity Infiniband amp Ethernet Software Specification Operating System RHEL 6 4 Kernel 2 6 32 358 e16 x86 64 Cluster Management Toolkit GANANA Locuz proprietary Scheduler Univa Grid Engine uge 8 1 Compilers GNU Intel Cluster Studio XE 2013 SPI Libraries GNU Intel Cluster Studio XE 2013 SPI MPI Intel MPI Openmpi OFED Intel OFED 3 Page HPC Cluster Architecture 192 168 1 15 eth B ono IIG Campus LAN j x Cede rU ibd _ Mgmt port PTs DNI n UELLE siia Breyer yyy TT Ig A A GigE Data Switch Feat ape fell pinus uia pni iis Um zril SN BEN ANNAM INS ZI E Ei E NET CTI ETE Bie EI IB Mgmt LAN Data LAN SAS L EE 4 E i LI Lj L 4 Page 2 User Login There are two ways for login to the cluster 1 From windows machine 1 Using putty command line interface software Putty download link http www chiark greenend org uk sgtatham putty download html 2 Using VNC Viewer VNC Viewer download link http www realvnc com download viewer How to login using putty software Open putty software a
7. page will declare it dead A customization has been made so as to put the temperature and Fan speed data in to this monitoring tool The information about the Temperature and Fan speed provided by the IMM this is accessed by the daemon ipmi IPMI tool which is running on all the machines Every 30 seconds this info is fetched and given to the gmetric The gmetric makes the information to appear in the Ganglia monitoring Page One can launch in web browser by typing a URL http localhost from master node http 192 168 1 15 ganglia fb Applications Places System e Ge E e a Thu Sep 11 1 04 PM root Ganglia iigm res in Cluster Report Mozilla Firefox File Edit View History Bookmarks Tools Help i i Ganglia iigm res in Cluster Re um v S 23 amp 192 168 1 15 9 v amp gg d Aa 2 iigm res in Cluster Report for Thu 11 Sep 2014 13 04 09 0530 Set Fresh Data Last hour 2h 4h day Weed nonfh yea jb or fom JH so m Go Clea Physical View Mec foad one Soned ascending descending by name Grid gt iigm res in gt Choose a Node Show only nodes matching Fe Max graphs to show all z Overview of iigm res in 2014 09 11 13 04 CPUs Toin 208 iigm res in Cluster Memory last hour iigm res in Cluster CPU last hour em iigm res in Cluster Load last hour 2 5T1 198 t Hosts down o at 399 f T p ze Current Load Avg 1m le e LST t 936 5696 5796 e t E 2 Avg Uti
8. rw r r amar a L ICEauthority 2172 2 8 20015118 1 rw amar L pam environment 265 11 17 2014 8 1 rw r r amar profile 675 11 17 2014 5 0 rw r r amar L Xauthority 125 2 23 2015 4 07 rw amar _ xinputrc 131 11 17 2014 5 1 rw rw r amar xsession errors 1127 2 20 20151 16 rw amar id 0 B of 11 433 KB in Oof 19 0 B of 13 899 KiB in 0 of 31 E 3 C F7 Create Directory gt ey Ji F10 Quit B srrP3 0 00 50 Using WINSCP you can drag amp drop which ever folder you want to copy and paste 22 Page To check the storage space limit of data for the each user amar iighpc quota Disk quotas for user amar uid 501 Filesystem blocks quota limit grace files quota limit grace 172 18 1 101 home 1952214652 0 1073741824 7864 0 0 amar iighpc Ganglia Cluster Monitoring Tool A Ganglia monitoring tool provides the various information regarding the status of the Cluster This information can be accessed through a web browser The Ethernet IP provides the access to this monitoring tool This monitor gathers various metrics such as CPU load free memory disk usage temperature fan speed etc These metrics are sent through the private cluster network and are used by the master node to generate the date in a graphical manner In addition to metric parameters a heartbeat message from each node is collected by the Platform When certain number of heartbeats from any node is missed this web
9. 17 2015 a i mozilla 11 17 2014 51 rwx amar _ gaussian linda txt 882 Text Document 3 23 2015 a i ssh 11 17 2014 9 0 rwx amar __ IIT Mumbai PFS Issu 202 Text Document 3 13 2015 a Ji Desktop 11 17 2014 8 3 rwxr xr x amar _ insurance 2weeler txt 39 TextDocument 3 22 2015 a B Documents 11 17 2014 5 0 rwxr xr x amar _ luster basic feature txt 1 863 TextDocument 3 14 2015 a Ji Downloads 11 17 2014 5 0 rwxr xr x amar mpi library pdf 1 004 535 Adobe Acrobat 3 11 2015 a Ji ifort code 11 27 2014 6 0 rwxrwxrwx amar nirrh amber applicati 3 311 TextDocument 3 23 2015 a J Music 11 17 2014 5 0 rwxr xr x amar 3 PCM Architecture Pr 4 415 937 Adobe Acrobat 3 11 2015 a B Pictures 11 17 2014 5 0 rwxr xr x amar ssh authorized keys J 144912 JPEG Image 3 13 2015 a J Public 11 17 2014 5 0 rwxr xr x amar 8 Storage pptx 1 097 665 Microsoft Pow 3 14 2015 a ad Templates 11 17 2014 5 0 rwxr xr x amar S storage 24 03 2015 ar 2 156 405 WinRAR archive 3 24 2015 a d Videos 11 17 2014 5 0 rwxr xr x amar storage interview que 1210 Text Document 3 25 2015 a L bash history 4707 3 26 2015 7 53 rw amar fal Strategy Meet on Apri 20 971 Microsoft Wor 3 20 2015 a _ bash_logout 220 11 17 2014 5 0 rw r r amar Btest3 rar 2 474 357 WinRAR archive 3 12 2015 a _ bashre 3 637 11 17 2014 5 0 rw r r amar _ dmre 25 11 17 2014 5 0
10. DIDIDIDIDZDULLDIDIDIDIDIDIDIDIDIDIDIDIDIDIDZDTDDIDDGLDIDDIDIDIDZILDIIIIII ILEIELEEELIELI Welcome to IIG HPC Cluster Do not run any jobs on Master Node All connections are monitored and recorded Disconnect IMMEDIATELY if you are not an authorized user HBHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH amar iighpc S a From Mac Open a terminal or x11 and enter ssh XY login name 172 16 1 100 as shown below ma Doi m nme eoe Kakad amar iighpc ssh 111x31 Warning Permanently added 192 168 1 15 RSA to the list of known hosts amar 192 168 1 15 s password Last login Thu Aug 27 17 23 12 2015 from 192 168 1 203 bash warning setlocale LC CTYPE cannot change locale UTF 8 No such file or directory amar amp iighpc logout Connection to 192 168 1 15 closed ACA864B8 Kakad clear ACA864B8 Kakad ssh XY amar 192 168 1 15 amar 192 168 1 15 s password Last login Fri Aug 28 11 14 20 2015 from 192 168 10 204 bash warning setlocale LC CTYPE cannot change locale UTF 8 No such file or directory amar iighpe B How to change password Type passwd at command prompt and follow the instructions 9 Page 3 How to run jobs Basic instructions while running jobs It is recommended to submit run Parallel and serial jobs through UGE grid engine only i e using command qsub submit script sh These scripts are directly submitted through
11. IIG HPC Cluster User Manual 256 Cores Intel HPC Cluster Prepared by Amar Kakad Bharati Kakad and Mahendra Doiphode Note This is a preliminary document prepared for the IHG HPC system user All IG HPC users are welcome to contribute to this document Kindly contact computer section for any corrections or suggestions 1 Page Index Specification User Login By windows machine By Linux Mac machine Changing login password How to run jobs Basic instructions Basic Compilers Math Libraries Application Software s on IIG HPC Accessing Matlab Accessing Comsol Accessing IDL Serial and Parallel Jobs Serial Job Script Parallel Job Script Basic Grid Engine Commands Some of the Useful commands and Monitoring Tools Linux Basic Commands Transferring files from desktop to cluster user s home directory Ganglia Monitoring Tool Some Questions and Answers for beginners 2 Page 1 Specification This document gives basic instructions to the new users of the cluster about logging in compilation running jobs monitoring and cleaning jobs which did not exit gracefully The IIG clusters can be used in multiple ways The clusters are named 1ighpc Intel R Xeon based 64 bit nghpc uses intel mpi over Infiniband interconnect tghpc cluster consists of 8 compute nodes amp 1 Head node Supports both the openmp and MPI modes of programming Hardware Specification Head Node Fujitsu RX300 S8 1 node CPU 2
12. LLBACKx enable usr local comsol50 multiphysics bin comsol batch clustersimple mpifabrics ofa inputfile home amar comsol testl micromixer cluster mph outputfile home amar comsol test1 micromixer_cluster date Y m d 7H ZM S mph batchlog home amar comsol test1 micromixer date Y 2om96d 290H 96M 968 log Some of the basic Grid Engine Commands How to submit a job qsub sge sh To get running job information related to cores used on nodes qstat f To get running current job resources utilization report qstat j lt job id gt To get job information details after job done of any job id qacct j lt job id gt To see status of jobs qstat u Qw waiting in queue stat 19 Page R running state E error state T Job is transferring on cluster To get details job state qstat f u To delete the job qdel job id To get list of parallel environment qconf spl To get details on available parallel environment qconf sp openmp qconf sp make To check the job submitted status amp no of cores used in cluster amar iighpc qstat f queuename qtype resv used tot np_load arch states all q iighpc 1igm res in BIP 0 0 12 NA lx amd64 au all q rack1 node0 1igm res in BIP 0 0 32 0 04 Ix amd64 new q Grack1 node6 iigm res in BIP 0 0 32 0 04 Ix amd64 new g rack1 node7 1igm res in BIP 0 0 32 0 04 Ix amd64 amar Giighpc 20 Page To check memory used each
13. ation of codes for cleaning make build require make clean option delete the directory containing the build and copy fresh build code and restart the build from the beginning Is it possible to check the status of jobs given directly without qsub When we close the operative login window then does these direct jobs get cancelled We cannot check the status of jobs submitted directly When operative window 1s closed the Job will get cancelled Hence it is recommended to submit jobs through qsub only How to give number of threads for openmp code Using pe openmp no of cores in the script but for running openmp pe we need to have openmp compatible code How to specify particular node and cores in a sh files q new q rack1 node6 all q rack1 node7 in the script Or While submitting job qsub q all q rack1 node6 all q rackl node7 script name gt Sometimes core files are generated with a very large size in the usr s account what are these files This files generates random job output For this problem immediately contact administrator IIGHPC After completion of job whether user is notified Yes after completion of job user will get intimation For this user need to specify his email id in the script file What is Ganglia Ganglia 1s a scalable distributed system monitoring tool that allows remote viewing live or historical statistics for a cluster What are the available queue 24
14. g m m L e MH qe Poa m e m um Bj saw I Medel Bui O si settings El eb Graphics _ B m oes 4 amp amp amp amp BE L iwit Slee ook m Used Products Untitled mph iroot amp Definitions Presentation ias Materials et gt fi Results Title Untitled Description Thumbnail EA Messages 3 ee Progress i Log 5 t COMSOL 5 0 1 276 Fl 554 MB 4441 MB 71 VNE config Bl amarigiighpe untitled mph COMSO NB m 16 Page How to open IDL Software Login to VNC viewer terminal and then go to available compute node using following command gt gt ssh rack1 node6 Then type idl at command prompt which will launch the idl software Presently this software works in command mode only Here are the detail screenshot to access idl software in HPC cal TigerVNC iighpc iigm res in 1 amar L BB Applications Places System E c E eb Sat Mar 7 10 19 AM amar M Coormpimier ix ama raiighpe De sktop e File Edit Miew Search Terminal Heip Li amarG iighpe Desktop s amarGiighpc Deskrop ls samaridiighpc Desktop s amarGiighpc Desktop ls Lamarigiighpc Desktop s idl IDL Wersion 8 2 linux x86 64 m64 c 612 Exelis Visual Information solutian Trash s Inc Installation number 241884 Licensed for use by IIGM amars Home n IDL BN Vine config Gj amarg 17 Page 5 submitting Serial and
15. gh performance language for technical computing It integrates computation visualization and programming in an easy to use environment where problems and solutions are expressed in familiar mathematical notation Matlab Homepage IDL short for Interactive Data Language is a programming language used for data analysis IDL 1s vectorized numerical and 12 Page Comsol biis usr local comsol5 1 multiphysics bin interactive and 1s commonly used for interactive processing of large amounts of data including image processing The syntax includes many constructs from Fortran and some from C COMSOL Multiphysics is a finite element analysis solver and Simulation software FEA Software package for various physics and engineering applications especially coupled phenomena or multiphysics In addition to conventional physics based user interfaces COMSOL Multiphysics also allows for entering coupled systems of partial differential equations PDEs How to open Matlab Open VNC viewer Click to Applications gt System Tools gt Terminal In the terminal go to available compute node using command gt gt ssh rackl nodeX In the above command X is any compute node number between 0 to7 Then type matlab at command prompt gt gt matlab Entering this command will launch the matlab GUI Refer following snapshots for accessing matlab 13 Page TigerwNc iighpc iigrm nres in L amar Applications Places ER i 1
16. ion 21 Page gt gt ssh XY usr_name rack1 nodeO File transfer To copy files amp folder from local system to cluster user s home directory For Window system User should download the WINSCP software from http winscp net eng download php Open the WINSCP software Enter the hostname 192 168 1 15 with port no 22 amp username amp password as shown in following screenshot Session Host name 192 168 1 15 User name amar Private key file Of user it will show your desktop contents amp head node user s home directory contents KK amar amar 59 185 107 171 WinSCP Local Mark Files Commands Session Options Remote Help e ug sue GP SA t yc Default ig BE Desktop Gie 2 8a i 2 te jj amar aadal C Users Amolt Desktop home amar Name Ext Size Type Changed Attr Name Ext Size Changed Rights Owner a Parent directory 3 25 2015 r 11 17 2014 5 0 rwxr xr x root Ji 18 03 2015 File folder 3 20 2015 i cache 11 17 2014 8 5 rwx amar Ji ARDE Storage 24 03 File folder 3 24 2015 Ui compiz 11 17 2014 5 1 rwx amar J Desktop File folder 3 26 2015 Ui config 11 17 2014 8 2 rwx amar _ ARDE Call Updates T 1 251 Text Document 3 15 2015 a i gconf 2 20 2015 1 16 rwx amar t desktop ini 282 Configuration 11 25 2014 ash i local 11 17 2014 5 0 rwxr xr x amar 8P FY15 16 Nos pptx 384 526 Microsoft Pow 3
17. lization last E LOT E 196 9 5 T i z 3 12 28 12 48 13 00 12 12 498 13 00 Use Now 13 Man 13 56 Avg 1 11 Max 1 7 Uskza on heatnap E 1 win Now 1 6 Min 36 Avg 144 9 Max Sh how 6 0 Man 0 0 Awg 0 0 Max 6 0 m Now 3m M Q Avg 5 A Max 1s B Noc Nc e A 8 1 Max B Cache Wow 5 0 Min 9G Awg 14 0 Max 17 7G g Mic how x nm v9 UA Max a y 4 pr a g Butter Now 19 9 Min 137 7M Ave 152 0 Max 197 97 System Now B X 4 nu 12 44 n N W ceu Mow 268 0 Min 236 0 Avg 240 7 Max 268 Mi Swep Wow 258 4G Man 218 59 Awg 252 46 Max 443 9 E Weit Wow A M oh IA Max 36 B Proc Now 5 M Avg 54 8 Max B9 Botal Now Aa Man 1 67 Avg 1 81 Max 2 old how 4 5A 4 74 Max wn iigm res in Cluster Network Last hour 208 k f u 1568 Z z 100 t 5 n B In k ou 7k Stacked Graph load_one iigm res in aggregated load one last hour 266 f 196 186 170 f 166 v VNC config Ganglia iigm res in C amp CN Some questions and answers l What is the difference between make and openmp environment When to use make and openmp environment in sh file Both are parallel environments make is the default parallel environment for running mpi jobs openmp is the default parallel environment for running openmp jobs What is warning Clock skew detected your build may be incomplete When we compile Fortran files and link those compiled files to exe This warning comes due to time stamp while compil
18. mp type Head Node IP address with port no 22 Note Public IP address of Head Node 192 168 1 15 Specify the destination you want to connect to Host Mame or IP address Port 192 168 1 15 22 O Rare Telnet Rlogin SSH O Seral Saved Sessions 5 Page Click on Open Next window will ask you about username amp password Entering valid login and password will get HPC access How to login using VNC Viewer software VNC Viewer software must be installed which 1s freely available on the website https www realvnc com download viewer From your desktop or laptop Open VNC viewer software specify IP address of Head node along with port number which is unique for each user This port number will be provided by the system administrator along with login ID and password VNC Viewer VNC Server Encryption Let VNC Server choose About Options Connect 6 Page Unencrypted connection The connection to this VNC Server will not be encrypted VNC Server 192 168 1 15 5908 Your authentication credentials will be transmitted securely but all subsequent data exchanged while the connection is in progress may be susceptible to interception by third parties Don t warn me about this again Enter your VNC Viewer password below VNC Server 192 168 1 15 Username mer Enter your HPC login password below 7 Page iighpciigm res in 8 amar VNC Viewer amar
19. node in cluster amar iighpc qhost HOSTNAME ARCH NCPU NSOC NCOR NTHR NLOAD MEMTOT MEMUSE SWAPTO SWAPUS global iighpc Ix amd64 12 2 I2 12 62 8G 1280G rackl1 nodeO lx amd64 32 4 32 32 0 08 252 1G 1 7G 128 0G 0 0M rack1 nodel lx amd64 32 4 32 32 0 03 252 1G 1 7G 128 0G 0 0M rack 1 node2 Ix amd 4 32 4 32 32 0 03 252 1G 1 7G 128 0G 0 0M rack1 node3 Ix amd 4 32 4 32 32 0 03 252 1G 1 7G 128 0G 0 0M rack1 node4 lx amd64 32 4 32 32 0 08 252 1G 1 7G 128 0G 0 0M rack1 node5 lx amd64 32 4 32 32 0 03 252 1G 1 7G 128 0G 0 0M rack1 node6 Ix amd 4 32 4 32 32 0 03 252 1G 1 7G 128 0G 0 0M rackl node7 lx amd64 32 4 32 32 0 08 252 1G 1 7G 128 0G 0 0M amar Giighpc Basic Linux Commands man this command shows man page of command man command Ex man Is ls list information about the Files Options list one file per line t sort by modification time h print sizes in human readable format a list hidden files du estimates file space usage Ex du skh df report file system disk space usage Ex df h top to see the process cpu uses memory usage ps report a snapshot of the current processes e all processes f full tail outputs the last part of files set the library path in etc Id so conf and then does ldconfig configure dynamic linker run time bindings ssh lt node name gt used to login to the nodes and XY for X forwarding e g login to node O with X forwarding opt
20. ring this command will launch the the COMSOL GUI Refer following snapshots for accessing COMSOL TigerVNe iighpc iigm res in l amar ae Cl ee Applications Places System Ec d Sat Mar 7 10 20 AM amar aa computer E amMmaraGiighpc EA File Edit wiew Search Terminal Help amarigiighpc 5 amars Home amargiighpe amargiighpc comsol J Ell TigervVNCc iighpc iigm res in 1l amar et lee Applications Places System ce d Sat Mar 7 10 21 AM amar amar iighpe File Edit Miew Search Terminal Heip amargiighpc 5 amarmgiighpc 5 amarigiighpc 5 comsol COMSOL MEUOLTIPRYSICSS 20 IH C t 3r 1953 M m VNC config E amar iighpe JE 15 Page TigerVNC iighpc iigm res in 1 amar ji Sat Mar 7 10 23 AM amar Untitled mph COMSOL Multiphysics File Edit Windows Options Tools Help A Model Wizard Select Space Dimension I lf I ccm lt q emp i l 2D 1D Axisyrmmetric Axisyrmrmetric CI Help ol Cancel Done 71 VNC config 582 MB 4441 MB Jl amar iighpc a Untided mph COMSO TigerVNC iighpc iigm res in 1 amar Applications Places System Ge s X Eal Qj SatMar 7 10 20AM amar e Untitled mph COMSOL Multiphysics File Edit Windows Options Tools Help i X D 9 g
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