Sample 3 - IMB-IO p_write_indv

The following example shows the results of the p_write_indv benchmark:

<..> IMB-IO -np 2 p_write_indv -npmin 2
#---------------------------------------------------
# Date                  : Thu Sep  4 13:43:34 2008
# Machine               : x86_64
# System                : Linux
# Release               : 2.6.9-42.ELsmp
# Version               : #1 SMP Wed Jul 12 23:32:02 EDT 2006
# MPI Version           : 2.0
# MPI Thread Environment: MPI_THREAD_SINGLE
 
# New default behavior from Version 3.2 on:
# the number of iterations per message size is cut down
# dynamically when a certain run time (per message size sample)
# is expected to be exceeded. Time limit is defined by variable
# SECS_PER_SAMPLE (=> IMB_settings.h)
# or through the flag => -time 
 
# Calling sequence was:
# ./IMB-IO p_write_indv -npmin 2
# Minimum io portion in bytes:   0
# Maximum io portion in bytes:   16777216
#
#
#
# List of Benchmarks to run:
# P_Write_Indv
#--------------------------------------------------------------
# Benchmarking P_Write_Indv
# #processes = 2
#--------------------------------------------------------------
#
#    MODE: AGGREGATE
#
  #bytes #rep.s t_min[μsec]     t_max     t_avg Mb/sec
       0     50       ..         ..        ..      ..
       1     50      
       2     50     
       4     50     
       8     50     
      16     50     
      32     50     
      64     50     
     128     50     
     256     50     
     512     50     
    1024     50     
    2048     50     
    4096     50     
    8192     50     
   16384     50    
   32768     50    
   65536     50    
  131072     50    
  262144     50    
  524288     32   
 1048576     16   
 2097152      8   
 4194304      4  
 8388608      2  
16777216      1  
 
#--------------------------------------------------------------
# Benchmarking P_Write_Indv
# #processes = 2
#--------------------------------------------------------------
#
#    MODE: NON-AGGREGATE
#
  #bytes #rep.s t_min[μsec]     t_max     t_avg Mb/sec
       0     10     ..           ..         ..    ..
       1     10    
       2     10    
       4     10   
       8     10   
      16     10   
      32     10   
      64     10   
     128     10   
     256     10   
     512     10   
    1024     10   
    2048     10   
    4096     10   
    8192     10   
   16384     10   
   32768     10   
   65536     10   
  131072     10   
  262144     10   
  524288     10   
 1048576     10   
 2097152      8   
 4194304      4  
 8388608      2  
16777216      1 
 
# All processes entering MPI_Finalize