Environnement Commun Linux : Différence entre versions

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*[[Login-Profile|Environment control via .profile]]
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*[[Running job monitor|Running job monitor]]
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*[[Queued Work Stream|Queued work streams]]
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en construction(cette page s'adresse principalement aux développeurs)<br>
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*Utility libraries
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**[[Utility library hpcsperf|hpcsperf]]
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**rmnlib
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under construction(this page is mainly for developers)<br>
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**rpn_comm
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**JIO (io monitoring)  
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*Useful environment variables  
 
*Useful environment variables  
 
**'''PATH'''&nbsp;: colon ':' separated list of directories where executables or sourced (.) shell includes are to be found<br>  
 
**'''PATH'''&nbsp;: colon ':' separated list of directories where executables or sourced (.) shell includes are to be found<br>  
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**'''EC_ARCH'''&nbsp;: name of the hardware+software architecture of the machine ('''BASE_ARCH''' + compiler usually)  
 
**'''EC_ARCH'''&nbsp;: name of the hardware+software architecture of the machine ('''BASE_ARCH''' + compiler usually)  
 
*Useful memory layout information  
 
*Useful memory layout information  
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**Linux memory layout<br>
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**[[Linux memory layout|Linux memory layout]]<br>  
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128 TB ---------------------------------  Top of memory
 
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                  |  thread 0 (master) stack
 
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                  |  local variables
 
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                \ /
 
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                / \
 
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                  |
 
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                  |  heap (allocate/malloc)
 
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~44 TB ---------------------------------
 
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                  |  thread N stack
 
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                  |
 
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                \ /
 
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                  |  thread N-1 stack
 
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                  |
 
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                \ /
 
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                ...
 
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                  |  thread 1 stack
 
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                  |
 
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                \ /
 
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                / \
 
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                  |  code + static data
 
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                  |  (common blocks + some main program arrays)
 
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000 ---------------------------------- Bottom of memory
 
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**'''OMP_STACKSIZE''' environment variable controls thread (&gt;0) stack size
 
 
*Useful information about system  
 
*Useful information about system  
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**'''/proc/cpuinfo'''&nbsp;: pseudo file containing a full description of logical cpus in a linux system (cat/less/more)&lt;br&gt;
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**'''/proc/cpuinfo'''&nbsp;: pseudo file containing a full description of logical cpus in a linux system (cat/less/more)  
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*useful commands&lt;br&gt;
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*Some useful commands  
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**'''r.mpirun'''&nbsp;: script front end to mpiexec hiding machine/mpi implementation specific details  
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**'''r.mpirun2''' : script front end to mpiexec hiding machine/mpi implementation specific details  
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**'''soumet'''&nbsp;: script used to submit jobs, hiding machine/batch subsystem specific details&lt;br&gt;
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**[[Soumet : travaux par lots / batch jobs|'''ord_soumet''']]&nbsp;: script used to submit jobs, hiding machine/batch subsystem specific details

Version actuelle datée du 7 d'août 2013 à 21:40

  • Environment control via .profile
  • Running job monitor
  • Queued work streams
  • Utility libraries
    • hpcsperf
    • rmnlib
    • rpn_comm
    • JIO (io monitoring)
  • Useful environment variables
    • PATH : colon ':' separated list of directories where executables or sourced (.) shell includes are to be found
    • LD_LIBRARY_PATH : colon ':' separated list of directories where dynamic libraries (.so files) needed by executables can be found
    • EC_LD_LIBRARY_PATH : colon ':' separated list of directories where s.compile, s.f90  et al. will look for libraries
    • EC_INCLUDE_PATH : colon ':' separated list of directories where s.compile, s.f90  et al. will look for include files
    • BASE_ARCH : name of the hardware architecture of the machine
    • EC_ARCH : name of the hardware+software architecture of the machine (BASE_ARCH + compiler usually)
  • Useful memory layout information
  • Useful information about system
    • /proc/cpuinfo : pseudo file containing a full description of logical cpus in a linux system (cat/less/more)
  • Some useful commands
    • r.mpirun2 : script front end to mpiexec hiding machine/mpi implementation specific details
    • ord_soumet : script used to submit jobs, hiding machine/batch subsystem specific details
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