update darshan-job-summary to be more clear

darshan-util/darshan-job-summary/bin/darshan-job-summary.pl.in

@@ -567,7 +567,7 @@ print FILE_CNT_TABLE "
 \\begin{tabular}{r|r|r|r}
 \\multicolumn{4}{c}{ } \\\\
 \\multicolumn{4}{c}{File Count Summary} \\\\
-\\multicolumn{4}{c}{(estimated by I/O access offsets)} \\\\
+\\multicolumn{4}{c}{(estimated by POSIX I/O access offsets)} \\\\
 \\hline
 type \& number of files \& avg. size \& max size \\\\
 \\hline
@@ -750,7 +750,7 @@ open(FS_TABLE, ">$tmp_dir/fs-data-table.tex") || die("error opening output files
 print FS_TABLE "
 \\begin{tabular}{c|r|r|r|r}
 \\multicolumn{5}{c}{ } \\\\
-\\multicolumn{5}{c}{Data Transfer Per Filesystem} \\\\
+\\multicolumn{5}{c}{Data Transfer Per Filesystem (POSIX)} \\\\
 \\hline
 \\multirow{2}{*}{File System} \& \\multicolumn{2}{c}{Write} \\vline \& \\multicolumn{2}{c}{Read} \\\\
 \\cline{2-5}
@@ -799,7 +799,7 @@ open(VAR_TABLE, ">$tmp_dir/variance-table.tex") || die("error opening output fil
 print VAR_TABLE "
 \\begin{tabular}{c|r|r|r|r|r|r|r|r|r}
 \\multicolumn{10}{c}{} \\\\
-\\multicolumn{10}{c}{Variance in Shared Files} \\\\
+\\multicolumn{10}{c}{Variance in Shared Files (POSIX)} \\\\
 \\hline
 File \& Processes \& \\multicolumn{3}{c}{Fastest} \\vline \&
 \\multicolumn{3}{c}{Slowest} \\vline \& \\multicolumn{2}{c}{\$\\sigma\$} \\\\
@@ -858,6 +858,7 @@ print("Slowest shared file time: $shared_file_time\n");
 print("Total bytes read and written by app (may be incorrect): $total_job_bytes\n");
 my $tmp_total_time = $slowest_uniq_time+$shared_file_time;
 print("Total absolute I/O time: $tmp_total_time\n");
+print("**NOTE: above shared and unique file times calculated using MPI-IO timers if MPI-IO interface used on a given file, POSIX timers otherwise.\n");
 
 # move to tmp_dir
 chdir $tmp_dir;

darshan-util/darshan-job-summary/share/file-access-eps.gplt

@@ -8,7 +8,7 @@ set xdata time
 set timefmt "%s"
 set format x "%H:%M:%S"
 set yrange [-1:ymax]
-set title "Timespan from first to last read access on independent files"
+set title "Timespan from first to last read access on independent files (POSIX)"
 set xrange ["0":runtime]
 set ytics 0,yinc,ymaxtic
 set lmargin 6
@@ -25,7 +25,7 @@ set style increment user
 plot "file-access-read.dat" using 1:2:3:4 with vectors nohead filled notitle
 
 set output "file-access-write.eps"
-set title "Timespan from first to last write access on independent files"
+set title "Timespan from first to last write access on independent files (POSIX)"
 
 # lw 3 to make lines thicker...
 plot "file-access-write.dat" using 1:2:3:4 with vectors nohead filled lt 2 notitle
@@ -34,7 +34,7 @@ set output "file-access-shared.eps"
 unset ytics
 set ylabel "All processes"
 set yrange [-1:1]
-set title "Timespan from first to last access on files shared by all processes"
+set title "Timespan from first to last access on files shared by all processes (POSIX)"
 
 plot "file-access-read-sh.dat" using 1:2:3:4 with vectors nohead filled lw 10 title "read", \
 "file-access-write-sh.dat" using 1:(($2)-.2):3:4 with vectors nohead filled lw 10 title "write"

darshan-util/darshan-job-summary/share/file-access-table.tex

 \begin{tabular}{l|p{1.7in}r}
-\multicolumn{3}{c}{Average I/O per process} \\
+\multicolumn{3}{c}{Average I/O per process (POSIX)} \\
 \hline
  & Cumulative time spent in I/O functions (seconds) & Amount of I/O (MB) \\
 \hline

darshan-util/darshan-job-summary/share/pattern-eps.gplt

@@ -22,7 +22,7 @@ set datafile separator ","
 set ylabel "Ops (Total, All Procs)"
 set ylabel offset character 2,0,0 font "" textcolor lt -1 rotate by 90
 
-set title "I/O Pattern"
+set title "POSIX I/O Pattern"
 plot  "pattern.dat" using 2:xtic(1) title "Total", \
       "" using 3 title "Sequential", \
       "" using 4 title "Consecutive"