starting point for script to parse darshan log files and generate I/O

interval information


git-svn-id: https://svn.mcs.anl.gov/repos/darshan/trunk@485 3b7491f3-a168-0410-bf4b-c445ed680a29

darshan-test/darshan-gather-intervals.pl

+#!/usr/bin/perl -w
+
+# This script will go through all of the darshan logs in a given
+# subdirectory and produce a file summarizing each job (id, start unix,
+# nprocs, bytes read, bytes written, perf estimate) and then for each job
+# generate two text files listing the read and write intervals (start, end,
+# nbytes)
+
+use strict;
+use File::Find;
+
+sub wanted
+{
+    my $file = $_;
+    my $line;
+    my $version = 0.0;
+    my $nprocs = 0;
+    my $start = 0;
+    my $end = 0;
+    my $start_a = "";
+    my $end_a = "";
+    my $jobid = 0;
+    my $bytes_r = 0;
+    my $bytes_w = 0;
+    my $perf = 0.0;
+
+    # only operate on darshan log files
+    $file =~ /\.darshan\.gz$/ or return;    
+
+    print("current file: $File::Find::name\n");
+
+    # grab jobid from name, old logs don't store it in the file
+    if($file =~ /_id(\d+)_/) {
+        $jobid = $1;
+    }
+
+    if(!(open(PARSE, "darshan-parser $file |")))
+    {
+        print(STDERR "Failed to parse $File::Find::name\n");
+        return;
+    }
+
+    while ($line = <PARSE>) {
+        if($line =~ /nprocs: (\S+)/) {
+            $nprocs = $1;
+        }
+        if($line =~ /start_time: (\S+)/) {
+            $start = $1;
+        }
+        if($line =~ /end_time: (\S+)/) {
+            $end = $1;
+        }
+        if($line =~ /start_time_asci: (.+)/) {
+            $start_a = "$1";
+        }
+        if($line =~ /end_time_asci: (.+)/) {
+            $end_a = "$1";
+        }
+    }
+
+    if(!(close(PARSE)))
+    {
+        print(STDERR "Failed to parse $File::Find::name\n");
+        return;
+    }
+    print(SUMMARY "$jobid\t\"$start_a\"\t\"$end_a\"\t$start\t$end\t$nprocs\n"); 
+}
+
+sub main
+{
+    my @paths;
+
+    if($#ARGV < 0) {
+        die("usage: darshan-gather-intervals.pl <one or more log directories>\n");
+    }
+
+    @paths = @ARGV;
+
+    if(!(open(SUMMARY, ">>summary.txt")))
+    {
+        print(STDERR "Failed to open summary.txt\n");
+        return;
+    }
+
+    print(SUMMARY "<jobid>\t<start ascii>\t<end ascii>\t<start unix>\t<end unix>\t<nprocs>\n"); 
+
+    find(\&wanted, @paths);
+
+}
+
+main();
+
+# Local variables:
+#  c-indent-level: 4
+#  c-basic-offset: 4
+# End:
+#  
+# vim: ts=8 sts=4 sw=4 expandtab