.gvs（GuideView openmp statistics）文件格式

Question

GuideView OpenMP性能分析器使用* .gvs文件格式嗎？

生成「guide.gvs」，f.e.由英特爾與

$ export LD_PRELOAD=<path_to_icc_or_redist>/lib/libiompprof5.so 
$ ./openmp_parallelized_prog 
$ ls -l guide.gvs 

Answer 1

OpenMP'ed程序這是個純文本。

這裏是很短的OMP程序的這樣一個例子：

$ cat guide.gvs 

*** KAI statistics library k3301 


*** Begin Task 0 

Environment variables: 
    OMP_NUM_THREADS : 2   
    OMP_SCHEDULE  : static  
    OMP_DYNAMIC  : FALSE  
    OMP_NESTED  : FALSE  
    KMP_STATSFILE : guide.gvs  
    KMP_STATSCOLS : 80   
    KMP_INTERVAL  : 0    
    KMP_BLOCKTIME : 200   
    KMP_PARALLEL  : 2    
    KMP_STACKSIZE : 2097152  
    KMP_STACKOFFSET : 0    
    KMP_SCHEDULING : <unknown>  
    KMP_CHUNK  : <unknown>  
    KMP_LIBRARY  : throughput  
end         

System parameters: 
    start  : Wed Nov 1 12:26:52 2010  
    stop  : Wed Nov 1 12:26:52 2010  
    host  : localhost      
    ncpu  : 2       
end           

Unix process parameters: 
    maxrss  : 0   
    minflt  : 440   
    majflt  : 2   
    nswap  : 0   
    inblock : 208   
    oublock : 0   
    nvcsw  : 6   
    nivcsw  : 7   
end       

Region counts: 
    serial regions : 2   
    barrier regions : 0   
    parallel regions : 1   
end        

Program execution time (in seconds): 
    cpu    :  0.00 sec  
    elapsed   :  0.04 sec  
    serial   :  0.00 sec  
    parallel  :  0.04 sec  
    cpu percent  :  0.01 %  
end         

Summary over all regions (has 2 threads): 
# Thread    #0  #1  
    Sum Parallel : 0.036 0.027  
    Sum Imbalance : 0.035 0.026  
    Min Parallel : 0.036 0.027  
    Min Imbalance : 0.035 0.026  
    Max Parallel : 0.036 0.027  
    Max Imbalance : 0.035 0.026  
end          

Region #1 (has 2 threads) at main/9 in "/home/user/icc/omp.c": 
# Thread    #0  #1       
    Sum Parallel : 0.036 0.027       
    Sum Imbalance : 0.035 0.026       
    Min Parallel : 0.036 0.027       
    Min Imbalance : 0.035 0.026       
    Max Parallel : 0.036 0.027       
    Max Imbalance : 0.035 0.026       
end               

Region #1 (has 2 threads) profile: 
# Thread  Incl  Excl Routine 
    0,0 : 0.000 0.000 main/9 "/home/user/icc/omp.c" 
    1,0 : 0.000 0.000 main/9 "/home/user/icc/omp.c" 
end               

Serial program regions: 
    Serial region #1 executes for 0.00 seconds 
    begins at START OF PROGRAM    
    ends before region #1 (using 2 threads) at main/9 in "/home/user/icc/omp.c" 
    Serial region #2 executes for 0.00 seconds         
    begins after region #1 (using 2 threads) at main/9 in "/home/user/icc/omp.c" 
    ends at END OF PROGRAM              
end                    

Serial region #1 profile: 
# Thread  Incl  Excl Routine 
end         

Serial region #2 profile: 
# Thread  Incl  Excl Routine 
end         

Program events (total): 
# Thread    #0  #1 
    mppbeg  :  1  0 
    mppend  :  1  0 
    serial  :  2  0 
    mppfkd  :  1  0 
    mppfrk  :  1  0 
    mppjoi  :  1  0 
    mppadj  :  1  0 
    mpptid  :  51  50 
end 

Region #1 (has 2 threads) events: 
# Thread    #0  #1 
    mppfrk  :  1  0 
    mppjoi  :  1  0 
    mpptid  :  50  50 
end 

Serial section events: 
# Serial    #1  #2 
    mppbeg  :  1  0 
    mppend  :  0  1 
    serial  :  1  1 
    mppfkd  :  1  0 
    mppadj  :  1  0 
    mpptid  :  1  0 
end 

*** end