X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=utils%2Fparallel%2Fgr2pe.pl;fp=utils%2Fparallel%2Fgr2pe.pl;h=6026300758ba3f135561250b646c6d0a9276c1b2;hb=0065d5ab628975892cea1ec7303f968c3338cbe1;hp=0000000000000000000000000000000000000000;hpb=28a464a75e14cece5db40f2765a29348273ff2d2;p=ghc-hetmet.git

diff --git a/utils/parallel/gr2pe.pl b/utils/parallel/gr2pe.pl
new file mode 100644
index 0000000..6026300
--- /dev/null
+++ b/utils/parallel/gr2pe.pl
@@ -0,0 +1,1434 @@
+#!/usr/local/bin/perl 
+#                                       (C) Hans Wolfgang Loidl, November 1994
+# ############################################################################
+# Time-stamp: <Fri Jun 14 1996 20:21:17 Stardate: [-31]7659.03 hwloidl>
+#
+# Usage: gr2pe [options] <gr-file>
+#
+# Create per processor activity profile (as ps-file) from a given gr-file.
+# 
+# Options:
+#  -o <file> ... output file (ps file) has name <file>
+#  -m        ... produce monochrome output
+#  -M        ... produce a migration graph
+#  -S        ... produce a spark graph in a separate file (based on the no. of
+#                sparks rather than the no. of runnable threads)
+#  -t        ... produce trace of runnable, blocked, fetching threads 
+#  -i <n>    ... ``infinity'' for number of blocked tasks (default: 20)
+#                all values larger than that are shown with the same width
+#  -C        ... do consistency check at each event (mainly for debugging)
+#  -h        ... print help message (this text)
+#  -v        ... be talkative
+#  
+# ############################################################################
+
+# die "This script is still under development -- HWL\n"; 
+
+# ----------------------------------------------------------------------------
+# Command line processing and initialization
+# ----------------------------------------------------------------------------
+
+require "getopts.pl";
+
+&Getopts('hvDCMNmSGti:o:l:p:');  
+
+do process_options();
+
+if ( $opt_v ) {
+    do print_verbose_message();
+}
+
+# ----------------------------------------------------------------------------
+# Global Variables
+# ----------------------------------------------------------------------------
+
+$RUNNING = "RUNNING";
+$RUNNABLE = "RUNNABLE";
+$BLOCKED = "BLOCKED";
+$START = "START";
+$END = "END";
+
+# Modes for hline
+#$LITERATE = 1;
+#$NORMALIZING = 2;
+
+%GRAY = (
+	 $RUNNING, 0.6,
+	 $RUNNABLE, 0.3,
+	 $BLOCKED, 0,
+	 $START, 0,
+	 $END, 0.5);
+
+# Special value showing that no task is running on $pe if in $running[$pe] 
+$NO_ID = -1;
+$NO_LAST_BG = $NO_LAST_BLOCKED = $NO_LAST_START = -1;
+
+# The number of PEs we have
+$nPEs = 32;
+
+# Unit (in pts) of the width for BLOCKED and RUNNABLE line segments
+$width_unit = 1; 
+
+# Width of line for RUNNING 
+$running_width = 1;
+
+# Offset of BLOCKED and RUNNABLE lines from the center line
+$offset = 10;
+
+# Left and right border of the picture; Width of the picture
+$left_border = 0;
+$right_border = 700;
+$total_width = $right_border - $left_border;
+$x_scale = 1;
+
+# Height of the picture measured from y-val of first to y-val of last PE
+$lower_border = 10;
+$upper_border = 490;
+$total_height = $upper_border - $lower_border;
+$y_scale = 1;
+
+# Constant from where shrinking of x-values (+scaling as usual) is enabled
+$very_big = 1E8;
+
+# Factor by which the x values are shrunk (if very big)
+$shrink_x = 10000;
+
+# Set format of output of numbers
+$# = "%.2g";
+
+# Width of stripes in migration graph
+$tic_width = 2;
+
+# If no spark profile should be generate we count the number of spark events
+# in the profile to inform the user about existing spark information
+if ( !$opt_S ) {
+    $spark_events = 0;
+}
+
+# ----------------------------------------------------------------------------
+# The real thing starts here
+# ----------------------------------------------------------------------------
+
+open (IN,"<$input") || die "$input: $!\n";
+open (OUT,">$output") || die "$output: $!\n";
+open (OUT_MIG,">$output_mig") || die "$output_mig: $!\n"  if $opt_M;
+open (OUT_SP,">$output_sp") || die "$output_sp: $!\n"  if $opt_S;
+# open (OUT_B,">$output_b") || die "$output_b: $!\n";
+# open (OUT_R,">$output_r") || die "$output_r: $!\n";
+
+open(OUT_RA, ">$RUNNABLE_file") || die "$RUNNABLE_file: $!\n"  if $opt_t;
+print OUT_RA "# Number of Runnable tasks on all PEs $i\n"      if $opt_t;
+open(OUT_BA, ">$BLOCKED_file") || die "$BLOCKED_file: $!\n"    if $opt_t;
+print OUT_BA "# Number of Blocked tasks on all PEs $i\n"       if $opt_t;
+open(OUT_FA, ">$FETCHING_file") || die "$FETCHING_file: $!\n"  if $opt_t;
+print OUT_FA "# Number of Fetching tasks on all PEs $i\n"      if $opt_t;
+
+($pname,$pars,$nPEs,$lat) = &skip_header(IN);
+
+
+# Fill in the y_val table for all PEs
+$offset = (&generate_y_val_table($nPEs)/2);
+
+$x_min = 0;
+$x_max = &get_x_max($input);
+$y_max = $total_height;
+#$y_max = $y_val[$nPEs-1] + offset;
+
+$is_very_big = $x_max > $very_big;
+
+# Max width allowed when drawing lines for BLOCKED, RUNNABLE tasks
+$max_width = $offset;
+
+# General init
+do init($nPEs);
+
+do write_prolog(OUT,$x_max,$y_max);
+do write_prolog(OUT_MIG,$x_max,$y_max)  if $opt_M;
+do write_prolog(OUT_SP,$x_max,$y_max)  if $opt_S;
+# do write_prolog(OUT_B,$x_max,$y_max);
+# do write_prolog(OUT_R,$x_max,$y_max);
+
+while (<IN>) {
+    next  if /^$/;                                # Omit empty lines;
+    next  if /^--/;                               # Omit comment lines;
+
+    ($event, $time, $id, $pe) = &get_line($_);
+    $x_max_ = $time  if $time > $x_max_;
+
+    print OUT_RA "TIME: $time  PEs: " . join(", ",@runnable) .
+	         "  SUM: " . &list_sum(@runnable) . "\n"      if $opt_t;
+    print OUT_BA "TIME: $time  PEs: " . join(", ",@blocked) .
+	         "  SUM: " . &list_sum(@blocked) . "\n"       if $opt_t;
+    print OUT_FA "TIME: $time  PEs: " . join(", ",@fetching) .
+	         "  SUM: " . &list_sum(@fetching) . "\n"      if $opt_t;
+
+    foo : {
+	($event eq "START") && do {
+	    # do draw_tic($pe, $time, $START);
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    $running[$pe] = $id;
+	    # $where{$id} = $pe + 1;
+	    last foo;
+	};
+	($event eq "START(Q)") && do {
+	    #do draw_segment($pe, $time, $RUNNABLE);
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    #$last_runnable[$pe] = $time;
+	    $runnable[$pe]++;
+	    # $where{$id} = $pe + 1;
+	    last foo;
+	};
+	($event eq "STEALING") && do {
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    $runnable[$pe]--;
+	    $where{$id} = $pe + 1;
+	    if ( $opt_M ) {
+		$when{$id} = $time;
+		do draw_tic($pe, $time, $event);
+	    }
+	    last foo;
+	};
+	($event eq "STOLEN") && do {
+	    # do draw_tic($pe, $time, $START);
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    $running[$pe] = $id;
+	    if ( $where{$id} ) { 
+		# Ok
+	    } else {
+		$warn++;
+		print "WARNING: No previous location for STOLEN task $id found!" .
+		     " Check the gr file!\n";
+	    }
+	    if ( $opt_M ) {
+		do draw_tic($pe, $time, $event);
+		do draw_arrow($where{$id}-1,$pe,$when{$id},$time);
+	    }
+	    last foo;
+	};
+	($event eq "STOLEN(Q)") && do {
+	    #do draw_segment($pe, $time, $RUNNABLE);
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    #$last_runnable[$pe] = $time;
+	    $runnable[$pe]++;
+	    if ( $where{$id} ) { 
+		# Ok
+	    } else {
+		$warn++;
+		print "WARNING: No previous location for STOLEN(Q) task $id found!" .
+		    " Check the gr file!\n";
+	    }
+	    if ( $opt_M ) {
+		do draw_tic($pe, $time, $event);
+		do draw_arrow($where{$id}-1,$pe,$when{$id},$time);
+	    }
+	    last foo;
+	};
+	($event eq "BLOCK") && do {
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    do draw_segment($pe, $time, $BLOCKED)  unless $blocked[$pe] == 0 ;
+	    $last_blocked[$pe] = $time;
+	    #do draw_segment($pe, $time, $RUNNING);
+	    $blocked[$pe]++;
+	    $running[$pe] = $NO_ID;
+	    last foo;
+	};
+	($event eq "RESUME") && do {
+	    # do draw_tic($pe, $time, $START);
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    do draw_segment($pe, $time, $BLOCKED);
+	    $last_blocked[$pe] = $time;
+	    $blocked[$pe]--;
+	    $running[$pe] = $id;
+	    last foo;
+	};
+	($event eq "RESUME(Q)") && do {
+	    #do draw_segment($pe, $time, $RUNNABLE);
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    do draw_segment($pe, $time, $BLOCKED);
+	    $last_blocked[$pe] = $time;
+	    #$last_runnable[$pe] = $time;
+	    $blocked[$pe]--;
+	    $runnable[$pe]++;
+	    last foo;
+	};
+	($event eq "END") && do {
+	    # do draw_tic($pe, $time, $END);
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    $running[$pe] = $NO_ID;
+	    # do draw_segment($pe, $time, $RUNNING);
+	    # $last_blocked[$pe] = $time;
+	    last foo;
+	};
+	($event eq "SCHEDULE") && do {
+	    # do draw_tic($pe, $time);
+	    $last_start[$pe] = $time;
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    $runnable[$pe]--;
+	    $running[$pe] = $id;
+	    last foo;
+	};
+	# NB: Check these; they are not yet tested
+	($event eq "FETCH") && do {
+	    # Similar to BLOCK; but don't draw a block segment
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    #do draw_segment($pe, $time, $BLOCKED)  unless $blocked[$pe] == 0 ;
+	    #$last_blocked[$pe] = $time;
+	    #$blocked[$pe]++;
+	    $fetching[$pe]++;
+	    $running[$pe] = $NO_ID;
+	    last foo;
+	};
+	($event eq "REPLY") && do {
+	    do draw_bg($pe, $time);
+	    $last_bg[$pe] = $time;
+	    #do draw_segment($pe, $time, $BLOCKED);
+	    #$last_blocked[$pe] = $time;
+	    #$blocked[$pe]--;
+	    $fetching[$pe]--;
+	    $blocked[$pe]++;
+	    last foo;
+	};
+	# These are only processed if a spark pofile is generated, too
+	(($event eq "SPARK") || ($event eq "SPARKAT") || ($event eq "ACQUIRED")) && do {
+	    if ( !opt_S ) {
+		$spark_events++;
+	        last foo;
+	    }
+	    do draw_sp_bg($pe, $time);
+	    $last_sp_bg[$pe] = $time;
+	    $sparks[$pe]++;
+	    last foo;
+	};
+
+	(($event eq "USED") || ($event eq "PRUNED") || ($event eq "EXPORTED")) && do {
+	    if ( !opt_S ) {
+		$spark_events++;
+	        last foo;
+	    }
+	    do draw_sp_bg($pe, $time);
+	    $last_sp_bg[$pe] = $time;
+	    $sparks[$pe]--;
+	    if ( $sparks[$pe]<0 ) {
+		print STDERR "Error: Neg. number of sparks @ $time\n";
+	    }
+	    last foo;
+	};
+
+	$warn++;
+	print "WARNING: Unknown event: $event\n";
+    }
+    do check_consistency()  if $opt_M;
+}
+
+do write_epilog(OUT,$x_max,$y_max);
+do write_epilog(OUT_MIG,$x_max,$y_max)   if $opt_M;
+do write_epilog(OUT_SP,$x_max,$y_max)    if $opt_S;
+# do write_epilog(OUT_B,$x_max,$y_max);
+# do write_epilog(OUT_R,$x_max,$y_max);
+
+close(IN);
+close(OUT);
+# close(OUT_B);
+# close(OUT_R);
+
+close(OUT_MIG) if $opt_M;
+close(OUT_SP)  if $opt_S;
+close(OUT_BA)  if $opt_t;
+close(OUT_RA)  if $opt_t;
+close(OUT_FA)  if $opt_t;
+
+#for ($i=0; $i<$nPEs; $i++) {
+#    close($OUT_BA[$i]);
+#    close($OUT_RA[$i]);
+#}
+
+if ($x_max != $x_max_ ) {
+    print STDERR "WARNING: Max time ($x_max_) is different from time of last event ($x_max)\n";
+}
+
+print "Number of suppressed warnings: $warn\n"  if $warn>0;
+print "FYI: The file $input contains $spark_events lines of spark information\n"  if !opt_S && ($spark_events>0);
+
+system "gzip -f1 $RUNNABLE_file"  if $opt_t;
+system "gzip -f1 $BLOCKED_file"   if $opt_t;
+system "gzip -f1 $FETCHING_file"  if $opt_t;
+
+system "fortune -s"  if $opt_v;
+
+exit 0;
+
+# ----------------------------------------------------------------------------
+# This translation is mainly taken from gr2qp.awk
+# This subroutine returns the event found on the current line together with
+# the relevant information for that event. The possible EVENTS are:
+#  START, STARTQ, STOLEN, BLOCK, RESUME, RESUMEQ, END, SCHEDULE
+# ----------------------------------------------------------------------------
+
+sub get_line {
+  local ($line) = @_;
+  local ($f, @fs);
+  local ($event, $time, $id, $pe);
+
+  @fs = split(/[:\[\]\s]+/,$line);
+  $event = $fs[3];
+  $time = $fs[2];
+  $id = $fs[4];
+  $pe = $fs[1];
+
+  print OUT "% > " . $_   if $opt_D;
+  print OUT "%   EVENT = $event; TIME = $time; ID = $id; PE = $pe\n" if $opt_D;
+  print OUT "%   --> this task comes from PE " . ($where{$id}-1) . "\n"  if $opt_D && $event eq "STOLEN";
+
+  return ($event, $time, $id, $pe);
+
+  # if ($fs[3] eq "START") { 
+  #     partprofile = 0; 
+  #     print (substr($3,2,length($3)-3))," *G 0 0x" $5; 
+  # }
+  # if ($fs[3] eq "START(Q)") { 
+  #     print (substr($3,2,length($3)-3))," *A 0 0x" $5; 
+  # }
+
+ #  if ($fs[3] eq "STOLEN")    { 
+  #     print (substr($3,2,length($3)-3))," AG 0 0x" $5; 
+  # }
+
+ #  if ($fs[3] eq "BLOCK")     { 
+  #     print (substr($3,2,length($3)-3))," GR 0 0x" $5; 
+  # }
+  # if ($fs[3] eq "RESUME")    { 
+  #     print (substr($3,2,length($3)-3))," RG 0 0x" $5, "0 0x0"; 
+  # }
+  # if ($fs[3] eq "RESUME(Q)") { 
+  #     print (substr($3,2,length($3)-3))," RA 0 0x" $5, "0 0x0"; 
+  # }
+  # if ($fs[3] eq "END")       { 
+  #   if (partprofile) {
+  #	p rint (substr($9,1,length($9)-1))," *G 0 0x" (substr($5,1,length($5)-1));
+  #	p rint (substr($3,2,length($3)-3))," G* 0 0x" (substr($5,1,length($5)-1));
+  #   } else {
+  #       print (substr($3,2,length($3)-3))," G* 0 0x" (substr($5,1,length($5)-1)); 
+  #   }
+  # }
+  # if ($fs[3] eq "SCHEDULE")  { 
+  #     print (substr($3,2,length($3)-3))," AG 0 0x" $5; 
+  # }
+
+}
+
+# ----------------------------------------------------------------------------
+
+sub check_consistency {
+    local ($i);
+
+    for ($i=0; $i<$nPEs; $i++) {
+	if ( $runnable[$i] < 0 ) {
+	    print "INCONSISTENCY: PE $i: Size of runnable queue: $runnable[$i] at time $time\n";
+            $runnable[$i] = 0 ;
+	}
+        if  ( $blocked[$i] < 0 ) {
+	    print "INCONSISTENCY: PE $i: Size of blocked queue: $blocked[$i] at time $time\n";
+            $blocked[$i] = 0 ;
+	}
+    }
+}
+
+# ----------------------------------------------------------------------------
+
+sub get_width {
+    local ($n, $type) = @_;
+
+    $warn++   if $n <0;
+    print "WARNING: Neg. number of tasks in $type queue: $n!!\n"  if $n <0;
+    $n = 0  if $n <0;
+    return ( ($type eq $RUNNING) ? ($running_width * $width_unit) : 
+	    &min($max_width, $n * $width_unit) );
+}
+
+# ----------------------------------------------------------------------------
+# Use an intensity between 0 (empty runnable queue) and 1 (`full' runnable
+# queue) to abstract from monchrome/color values
+# The concrete grayshade/color is computed via PS macros.
+# ----------------------------------------------------------------------------
+
+sub get_intensity {
+    local ($n) = @_;
+
+    print "SEVERE WARNING: get_intensity: Negative size of runnable queue\n"  if $n<0;
+
+    if ($n >= $inf_block) {
+	return 1.0;
+    } else {
+	return ($n+1)/$inf_block;
+    }
+}
+
+# ----------------------------------------------------------------------------
+
+sub get_sp_intensity {
+    local ($n) = @_;
+
+    print "SEVERE WARNING: get_sp_intensity: Negative size of sparks queue\n"  if $n<0;
+
+    if ($n >= $inf_block) {
+	return 1.0;
+    } else {
+	return ($n+1)/$inf_block;
+    }
+}
+
+# ----------------------------------------------------------------------------
+
+sub get_shade {
+    local ($n) = @_;
+
+
+    if ($n > $inf_block) {
+	return 0.2;
+    } else {
+	return 0.8 - ($n/$inf_block);
+    }
+}
+
+# ----------------------------------------------------------------------------
+
+sub max { 
+    local($x, $y) = @_;
+
+    return ($x>$y ? $x : $y);
+}
+
+# ----------------------------------------------------------------------------
+
+sub min { 
+    local($x, $y) = @_;
+
+    return ($x<$y ? $x : $y);
+}
+
+# ----------------------------------------------------------------------------
+
+sub list_sum {
+    local (@list) = @_;
+
+    local ($sum);
+
+    foreach $x (@list) {
+	$sum += $x;
+    }
+
+    return ($sum);
+}
+
+# ----------------------------------------------------------------------------
+# Drawing functions.
+# Put on top of funtions that directly generate PostScript.
+# ----------------------------------------------------------------------------
+
+sub draw_segment {
+    local ($pe, $time, $type) = @_;
+    local ($x, $y, $width, $gray);
+
+    if ( $type eq $BLOCKED ) {
+	if ( $last_blocked[$pe] == $NO_LAST_BLOCKED ) { return; };
+	$width = &get_width($blocked[$pe], $type);
+	if ( $width  == 0 ) { return; };
+	$y = $stripes_low[$pe] + int($width/2 + 0.5);
+	$x = $last_blocked[$pe]; 
+
+	if ( $is_very_big ) {	
+	    $x = int($x/$shrink_x) + 1;   # rounded up
+	}
+
+	#  $gray = 0.5;  # Ignoring gray level; doesn't change!
+	do ps_draw_hline(OUT,$x,$y,$time,$width);   
+    } else {
+	die "ERROR: Unknow type of line: $type in draw segment\n";
+    }
+
+    if ($x < 0 || $y<0) {
+	die "Impossiple arguments for ps_draw_hline: ($x,$y); type=$type\n";
+    }
+    if ($width<0 || $width>$max_width || $gray <0 || $gray > 1) {
+	die "Impossible arguments to ps_draw_hline: width=$width; gray=$gray\n";
+    }
+}
+
+# ----------------------------------------------------------------------------
+
+sub draw_tic {
+    local ($pe, $time, $event) = @_;
+    local ($x, $y, $lit);
+
+    $ystart = $stripes_low[$pe];
+    $yend = $stripes_high[$pe];
+    $x = $time;
+    if ( $event eq "STEALING" ) {
+	$lit = 0;  # i.e. FROM
+    } elsif ( ( $event eq "STOLEN") || ( $event eq "STOLEN(Q)" ) ) {
+	$lit = 1;  # i.e. TO
+    } else {
+	die "ERROR: Wrong event $event in draw_tic\n";
+    }
+
+    if ( $is_very_big ) {	
+	$x = int($x/$shrink_x) + 1;   # rounded up
+    }
+
+    if ($x < 0 || $ystart<0 || $yend<0) {
+	die "Impossiple arguments for ps_draw_tic: ($x,$ystart,$yend); PE=$pe\n";
+    }
+    do ps_draw_tic(OUT_MIG,$x,$ystart,$yend,$lit);
+}
+
+# ----------------------------------------------------------------------------
+
+sub draw_bg {
+    local ($pe,$time) = @_;
+    local ($x_start, $x_end, $intensity, $secondary_intensity);
+
+    if ( $last_bg[$pe] == $NO_LAST_BG ) { 
+	print OUT "% Omitting BG: NO LAST BG\n" if $opt_D; 
+	return; 
+    }
+    if ( $running[$pe] == $NO_ID ) { 
+	print OUT "% BG: NO RUNNING PE -> idle bg\n" if $opt_D; 
+	# return;
+    }
+    $x_start = $last_bg[$pe];  
+    $x_end = $time;
+    $intensity = ( $running[$pe] == $NO_ID ? 
+		      0 : 
+	              &get_intensity($runnable[$pe]) );
+    $secondary_intensity = ( $running[$pe] == $NO_ID ? 
+			        0 : 
+	                        &get_intensity($fetching[$pe]) );
+    do ps_draw_bg(OUT,$x_start, $x_end, $stripes_low[$pe], $stripes_high[$pe],
+		  $intensity,$secondary_intensity);
+
+    if ( $opt_M ) {
+	do ps_draw_hline(OUT_MIG, $x_start, $stripes_low[$pe], $x_end, 
+			 $mig_width);
+    }
+    
+}
+
+# ----------------------------------------------------------------------------
+# Variant of draw_bg; used for spark profile
+# ----------------------------------------------------------------------------
+
+sub draw_sp_bg {
+    local ($pe,$time) = @_;
+    local ($x_start, $x_end, $intensity, $secondary_intensity);
+
+    if ( $last_sp_bg[$pe] == $NO_LAST_BG ) { 
+	print OUT_SP "% Omitting BG: NO LAST BG\n" if $opt_D; 
+	return; 
+    }
+    $x_start = $last_sp_bg[$pe];  
+    $x_end = $time;
+    $intensity = ( $sparks[$pe] <= 0 ? 
+		      0 : 
+	              &get_sp_intensity($sparks[$pe]) );
+    $secondary_intensity = 0; 
+    do ps_draw_bg(OUT_SP,$x_start, $x_end, $stripes_low[$pe], $stripes_high[$pe],
+		  $intensity,$secondary_intensity);
+
+}
+
+# ----------------------------------------------------------------------------
+
+sub draw_arrow {
+    local ($from_pe,$to_pe,$send_time,$arrive_time) = @_;
+    local ($ystart,$yend);
+    
+    $ystart = $stripes_high[$from_pe];
+    $yend = $stripes_low[$to_pe];
+    do ps_draw_arrow(OUT_MIG,$send_time,$arrive_time,$ystart,$yend);
+}
+
+# ----------------------------------------------------------------------------
+# Normalize the x value s.t. it fits onto the page without scaling.
+# The global values $left_border and $right_border and $total_width 
+# determine the borders
+# of the graph. 
+# This fct is only called from within ps_... fcts. Before that the $x values
+# are always times.
+# ----------------------------------------------------------------------------
+
+sub normalize {
+    local ($x) = @_;
+
+    return (($x-$xmin)/($x_max-$x_min) * $total_width + $left_border);
+}
+
+# ----------------------------------------------------------------------------
+# PostScript generation functions.
+# Lowest level of writing output file.
+# Now there is only normalizing mode supported. 
+# The following is out of date:
+# $mode can be $LITERATE i.e. assuming scaling has been done
+#           or $NORMALIZING i.e. no scaling has been done so far (do it in
+#                                macros for drawing)
+# ----------------------------------------------------------------------------
+
+sub ps_draw_hline {
+    local ($OUT,$xstart,$y,$xend,$width) = @_;
+    local ($xlen); 
+
+    print $OUT "% HLINE From: ($xstart,$y) to ($xend,$y) (i.e. len=$xlen) with width $width gray $gray\n" if $opt_D; 
+
+    if ( ! $opt_N ) {
+	$xstart = &normalize($xstart);
+	$xend = &normalize($xend);
+    }
+
+    $xlen = $xend - $xstart;
+
+    printf $OUT ("%d %d %d %d L\n",$xstart,$y,$xlen,$width);
+    #           ( $mode == $LITERATE ? " L\n" : " N\n");
+
+    # Old version:
+    # print $OUT "newpath\n";
+    # print $OUT "$GRAY{$type} setgray\n";
+    # print $OUT $xend . "  " . $y . " " . $xstart . " " . $y . " " . $width . 
+    #    " line\n";
+    # print $OUT "stroke\n";
+}
+
+# ----------------------------------------------------------------------------
+
+sub ps_draw_vline {
+    local ($OUT,$x,$ystart,$yend,$width) = @_;
+
+    print $OUT "% VLINE From: ($x,$ystart) to ($x,$yend) with width $width\n" if $opt_D; 
+
+    if ( ! $opt_N ) {
+	$x = &normalize($x);
+    }
+
+    print $OUT "newpath\n";
+    print $OUT "0 setgray\n";                             # constant gray level
+    printf $OUT ("%d %d %d %d %.1g line\n",
+		 $x,$yend ,$x,$ystart,$width);
+    print $OUT "stroke\n";
+}
+
+# ----------------------------------------------------------------------------
+
+sub ps_draw_tic {
+    local ($OUT,$x,$ystart,$yend,$lit) = @_;
+
+    print $OUT "% TIC at ($x,$ystart-$yend)\n"   if $opt_D;
+
+    if ( ! $opt_N ) {
+	$x = &normalize($x);
+    }
+
+    printf $OUT ("%d %d %d %d T\n",$x,$ystart,$yend,$lit);
+
+    # Old version without PostScript macro /tic:
+    # print $OUT "newpath\n";
+    # print $OUT "ticwidth setlinewidth\n" .
+    #	      $x . " " . $y . " ticlen sub moveto\n" .
+    #	      $x . " " . $y . " ticlen add lineto\n";
+    #print $OUT "stroke\n";
+}
+
+# ----------------------------------------------------------------------------
+
+sub ps_draw_arrow {
+    local ($OUT,$xstart,$xend,$ystart,$yend) = @_;
+
+    print $OUT "% ARROW from ($xstart,$ystart) to ($xend,$yend)\n"   if $opt_D;
+
+    if ( ! $opt_N ) {
+	$xstart = &normalize($xstart);
+	$xend = &normalize($xend);
+    }
+
+    printf $OUT ("%d %d %d %d A\n",$xstart,$ystart,$xend,$yend);
+}
+
+# ----------------------------------------------------------------------------
+
+sub ps_draw_bg {
+    local ($OUT,$xstart, $xend, $ystart, $yend, 
+	   $intensity, $secondary_intensity) = @_;
+    local ($xlen, $ylen);
+
+    print $OUT "% Drawing bg for PE $pe from $xstart to $xend" .
+	       "  (intensity: $intensity, $secondary_intensity)\n"  if $opt_D;
+
+    if ( ! $opt_N ) {
+	$xstart = &normalize($xstart);
+	$xend = &normalize($xend);
+    }
+
+    $xlen = $xend - $xstart;
+    $ylen = $yend - $ystart;
+
+    printf $OUT ("%d %d %d %d %.2g %.2g R\n",
+		 $xstart,$ystart,$xlen,$ylen,$intensity,$secondary_intensity);
+
+    # Old version without PostScript macro /rect:
+    #print $OUT "newpath\n";
+    #print $OUT " $x_start $y_start moveto\n";
+    #print $OUT " $x_end $y_start lineto\n";
+    #print $OUT " $x_end $y_end lineto\n";
+    #print $OUT " $x_start $y_end lineto\n";
+    #print $OUT "closepath\n";
+    #print $OUT "$gray setgray\n";
+    #print $OUT "fill\n";
+}
+
+# ----------------------------------------------------------------------------
+# Initialization and such
+# ----------------------------------------------------------------------------
+
+sub write_prolog {
+    local ($OUT, $x_max, $y_max) = @_;
+    local ($date, $dist, $y, $i);
+
+    $date = &get_date();
+
+    if ( $opt_N ) {
+      $x_scale = $total_width/$x_max;
+      $y_scale = $total_height/$y_max;
+    }
+
+    # $tic_width = 2 * $x_max/$total_width;    constant now
+    # $tic_len = 4 * $y_max/$total_height;
+
+    print $OUT "%!PS-Adobe-2.0\n";
+    print $OUT "%%BoundingBox:   \t0 0 560 800\n";
+    print $OUT "%%Title: \t$pname  $pars\n";
+    print $OUT "%%Creator: \tgr2pe\n";
+    print $OUT "%%CreationDate: \t$date\n";
+    # print $OUT "%%Orientation: \tSeascape\n";
+    print $OUT "%%EndComments\n";
+
+    # print $OUT "%%BeginSetup\n";
+    # print $OUT "%%PageOrientation: \tSeascape\n";
+    # print $OUT "%%EndSetup\n";
+
+    print $OUT "%/runlineto {1.5 setlinewidth lineto} def\n";
+    print $OUT "%/suspendlineto {0.5 setlinewidth lineto} def\n";
+    print $OUT "%/run { newpath moveto 1.5 setlinewidth lineto stroke} def\n";
+    print $OUT "%/suspend { newpath moveto 0.5 setlinewidth lineto stroke} def\n";
+    print $OUT "\n";
+    print $OUT "/total-len $x_max def\n";
+    print $OUT "/show-len $total_width def\n";
+    print $OUT "/normalize { show-len mul total-len div } def\n";
+    print $OUT "/x-normalize { exch show-len mul total-len div exch } def\n";
+    print $OUT "/str-len 12 def\n";
+    #print $OUT "/prt-n { str-len string cvs show } def" .
+    #	       "     % print top-of-stack integer\n";
+    print $OUT "/prt-n { cvi str-len string cvs \n" .
+	       "         dup stringwidth pop \n" .
+	       "         currentpoint pop 780 gt { 10 sub } { 2 div } ifelse \n" .
+               "         neg 0 rmoveto \n" . 
+               "         show  } def \n" .
+	       "        % print top-of-stack integer centered at the current point\n";
+    print $OUT "/ticwidth $tic_width def\n";
+    print $OUT "%/ticlen $tic_len def     % actually half of the tic-length\n";
+    print $OUT "/T    % Draw a tic mark\n" .
+               " {    % Operands: x, y-start, y-end of tic, from/to flag \n" .
+	       "   newpath\n" .
+	       "   0 eq { " . ( $opt_m ? " 0.2 setgray }" 
+                                       : " 0 0.7 0.2 setrgbcolor }" ) .
+	       "        { " . ( $opt_m ? " 0.8 setgray }" 
+                                       : " 0.7 0 0.2 setrgbcolor }" ) . " ifelse\n" .
+	       "   ticwidth setlinewidth\n" .
+	       "   3 copy pop moveto\n" .
+	       "   exch pop lineto\n" .
+	       "   stroke\n" .
+	       " } def\n";
+    #	       "   3 copy pop x-normalize moveto\n" .
+    #	       "   exch pop x-normalize lineto\n" .
+    #	       "   stroke\n" .
+    #	       " } def\n";
+    print $OUT "/blocked-gray 0 def\n";
+    print $OUT "/idle-gray 1 def\n";
+    print $OUT "/blocked-color { 0.2 0.1 0.8 } def\n";
+    print $OUT "/idle-color { 0.8 0.1 0.2 } def\n";
+    print $OUT "/idle-color-fetch { 0.5 0.6 0.4 } def\n";
+    print $OUT "/L              % Draw a line (for blocked tasks)\n" .
+	       " {              % Operands: (x,y)-start xlen width\n" .
+	       "  newpath \n" .
+	       ( $opt_m ? "  blocked-gray setgray\n" : 
+                          "  blocked-color setrgbcolor\n") .
+	       "         setlinewidth 3 copy pop moveto 0 rlineto pop pop stroke} def\n";
+    print $OUT "/N              % Draw a normalized line\n" .
+	       " {              % Operands: (x,y)-start xlen width\n" .
+	       "  newpath \n" .
+	       ( $opt_m ? "  blocked-gray setgray\n" : 
+                          "  blocked-color setrgbcolor\n") .
+	       "         setlinewidth 3 copy pop x-normalize moveto normalize 0 rlineto pop pop stroke} def\n";
+    print $OUT "% /L line def\n";
+    print $OUT "/printText { 0 0 moveto (GrAnSim) show } def\n";
+    if ( $opt_m ) {
+	print $OUT "/logo { gsave \n" .
+	           "        translate \n" .
+		   "        .95 -.05 0  " .
+		   "          { setgray printText 1 -.5 translate } for \n" .
+		   "        1 setgray printText\n" . 
+		   "        grestore } def\n";
+    } else {
+	print $OUT "/logo { gsave \n" .
+	      "        translate \n" .
+	      "        .95 -.05 0\n" .
+	      "          { dup 1 exch sub 0 exch setrgbcolor printText 1 -.5 translate } for \n" . 
+	      "        1 0 0 setrgbcolor printText\n" . 
+	      "        grestore} def\n";
+    }
+
+    print $OUT "/asciilogo { 5 sub moveto HB16 setfont (GrAnSim) show } def\n";
+    print $OUT  "/starside \n" .
+                " {starlen 0 lineto currentpoint translate \n" .
+		"    -144 rotate } def\n";
+
+   print $OUT  "/star \n" .
+               " { moveto \n" .
+	       "   currentpoint translate \n" .
+	       "   4 {starside} repeat \n" .
+	       "   closepath \n" .
+	       "   gsave \n" .
+	       "   .7 setgray fill \n" .
+	       "   grestore \n" .
+	       "   % stroke  \n" .
+	       "  } def \n";
+    #print $OUT "/get-shade   % compute shade from intensity\n" .
+    #	           " { pop 1 exch sub 0.6 mul 0.2 add } def\n";
+    if ( $opt_m ) { 
+	print $OUT "/from 0.2 def\n";
+	print $OUT "/to 0.8 def\n";
+	print $OUT "/get-shade   % compute shade from intensity\n" .
+	           "  { pop dup 0 eq { pop idle-gray }\n " .
+		   "                 { 1 exch sub to from sub mul from add } ifelse } def\n";
+	           " { pop 1 exch sub to from sub mul from add } def\n";
+    } else {
+	print $OUT "/from 0.5 def\n";
+	print $OUT "/to 0.9 def\n";
+    }
+    print $OUT "/epsilon 0.01 def\n";
+    print $OUT "/from-blue 0.7 def\n";
+    print $OUT "/to-blue   0.95 def\n";
+    print $OUT "/m 1 def\n";
+    print $OUT "/magnify { m mul dup 1 gt { pop 1 } if } def\n";
+    print $OUT "%\n" .
+	       "% show no. of runnable threads and the current degree of fetching\n" .
+	       "%\n" .
+	       "/get-color        % compute color from intensity\n" .
+               " { 4 mul dup      % give more weight to second intensity\n" .
+	       "   0 eq { pop 0 exch } \n" .
+	       "        { from-blue to-blue sub mul from-blue add dup \n" .
+	       "          1 gt { pop 1 } if  exch } ifelse \n" .
+               "   dup 0 eq { pop pop idle-color }\n" .
+               "            { 1 exch sub to from sub mul from add        % green val is top of stack\n" .
+	       "              exch 0 3 1 roll  } ifelse } def\n"; 
+
+    print $OUT "%\n";
+    print $OUT "% show no. of runable threads only\n";
+    print $OUT "%\n";
+    print $OUT "/get-color-runnable			% compute color from intensity\n";
+    print $OUT "{ pop dup 0 eq { pop idle-color }\n";
+    print $OUT "               { 1 exch sub to from sub mul from add   % green val is top of stack\n";
+    print $OUT "                 0.2 0 3 1 roll  } ifelse } def\n";
+
+    print $OUT "%\n";
+    print $OUT "% show no. of fetching threads only\n";
+    print $OUT "%\n";
+    print $OUT "/get-color-fetch  			% compute color from intensity\n";
+    print $OUT "{ exch pop dup 0 eq { pop idle-color-fetch }\n";
+    print $OUT "                    { 1 exch sub to from sub mul from add   % blue val is top of stack\n";
+    print $OUT "                      0.2 0.6 3 2 roll  } ifelse } def\n";
+
+    #print $OUT "/get-color    % compute color from intensity\n" .
+    #           " { dup 0 eq { pop idle-color }\n" .
+    #           "            { 1 exch sub to from sub mul from add 0 exch 0 } ifelse } def\n"; 
+    #	       " { dup 0.4 le { 0.4 exch sub 0.2 add 2 mul 0 0 setrgbcolor} " .
+    #          "              { 1 exch sub 0.4 add 0 exch 0 setrgbcolor} ifelse \n" .
+    print $OUT "/R          % Draw a rectangle \n" .
+               " {             % Operands: x y xlen ylen i j \n" .
+               "               %    (x,y) left lower start point of rectangle\n" .
+               "               %    xlen  length of rec in x direction\n" .
+               "               %    ylen  length of rec in y direction\n" .
+               "               %    i     intensity of rectangle [0,1] \n" .
+               "               %    j     intensity blue to indicate fetching\n" .
+               "               %          (ignored in mono mode)\n" .
+	       ( $opt_m ? "  get-shade setgray\n" 
+		        : "  get-color-runnable setrgbcolor\n" ) .
+               "  newpath\n" .
+               "  4 copy pop pop moveto\n" .
+	       "  1 index  0 rlineto\n" .
+	       "  0 index  0 exch rlineto\n" .
+	       "  1 index  neg 0 rlineto\n" .
+               "  0 index  neg 0 exch rlineto\n" .
+               "  pop pop pop pop\n" .
+               "  closepath\n" .
+               "  fill             % Note: No stroke => no border\n" .
+	       " } def\n";
+    print $OUT "% /R rect def\n";
+    print $OUT "%/A         % Draw an arrow (for migration graph)\n" .
+	       "% {         % Operands: x y x' y' \n" .
+               "%           %  (x,y)    start point \n" .
+               "%           %  (x',y')  end point \n" .
+	       ( $opt_m ? "%    0 setgray\n" : "%     0 0 0 setrgbcolor\n" ) .
+	       "%  1 setlinewidth\n" .
+	       "%  newpath 4 2 roll x-normalize moveto x-normalize lineto stroke } def\n";
+
+    print $OUT "/A         % No arrows \n" .
+	       " { pop pop pop pop } def\n";
+    print $OUT "-90 rotate\n";
+    
+    print $OUT "-785 30 translate\n";
+    print $OUT "/HE10 /Helvetica findfont 10 scalefont def\n";
+    print $OUT "/HE12 /Helvetica findfont 12 scalefont def\n";
+    print $OUT "/HE14 /Helvetica findfont 14 scalefont def\n";
+    print $OUT "/TI16 /Times-Italic findfont 16 scalefont def\n";
+    print $OUT "/HB16 /Helvetica-Bold findfont 16 scalefont def\n";
+    print $OUT "% " . "-" x 77 . "\n";
+
+    print $OUT "newpath\n";
+    print $OUT "0 8.000000 moveto\n";
+    print $OUT "0 525.000000 760.000000 525.000000 8.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "760.000000 525.000000 760.000000 0 8.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "760.000000 0 0 0 8.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "0 0 0 525.000000 8.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "0.500000 setlinewidth\n";
+    print $OUT "stroke\n";
+    print $OUT "newpath\n";
+    print $OUT "4.000000 505.000000 moveto\n";
+    print $OUT "4.000000 521.000000 752.000000 521.000000 4.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "752.000000 521.000000 752.000000 501.000000 4.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "752.000000 501.000000 4.000000 501.000000 4.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "4.000000 501.000000 4.000000 521.000000 4.000000 arcto\n";
+    print $OUT "4 {pop} repeat\n";
+    print $OUT "0.500000 setlinewidth\n";
+    print $OUT "stroke\n";
+    
+    print $OUT "% ----------------------------------------------------------\n";
+    print $OUT "% Print pallet\n";
+    print $OUT "% NOTE: the values for the tics must correspond to start and\n";
+    print $OUT "%       end values in /get-color\n";
+    print $OUT "gsave \n";
+    print $OUT "340 508 translate\n";
+    print $OUT "0.0 0.05 1.00 \n";
+    print $OUT " { \n";
+    print $OUT "  dup dup \n";
+    print $OUT "    from epsilon sub gt exch \n";
+    print $OUT "    from epsilon add lt \n";
+    print $OUT "   and\n";
+    print $OUT "    { newpath " .
+	       ($opt_m ? "0 setgray " : "0 0 0 setrgbcolor ") .
+	       "0 0 moveto 0 -3 rlineto stroke } if\n";
+    print $OUT "  dup dup \n";
+    print $OUT "    to epsilon 2 mul sub gt exch \n";
+    print $OUT "    to epsilon 2 mul add lt \n";
+    print $OUT "   and\n";
+    print $OUT "    { newpath " . 
+	       ($opt_m ? "0 setgray " : "0 0 0 setrgbcolor ") .
+	       "10 0 moveto 0 -3 rlineto stroke } if\n";
+    print $OUT ($opt_m ? " setgray\n" : "  0 exch 0 setrgbcolor\n");
+    print $OUT "  newpath\n";
+    print $OUT "  0 0 moveto\n";
+    print $OUT "  10 0 rlineto\n";
+    print $OUT "  0 10  rlineto\n";
+    print $OUT "  -10 0 rlineto\n";
+    print $OUT "  closepath\n";
+    print $OUT "  fill\n";
+    print $OUT "  10 0 translate \n";
+    print $OUT " } for\n";
+    print $OUT "grestore\n";
+ 
+    print $OUT "% Print pallet for showing fetch\n";
+    print $OUT "% NOTE: the values for the tics must correspond to start and\n";
+    print $OUT "%       end values in /get-color\n";
+    print $OUT "%gsave \n";
+    print $OUT "%340 508 translate\n";
+    print $OUT "%0.0 0.05 1.00 \n";
+    print $OUT "%{ \n";
+    print $OUT "%  dup dup \n";
+    print $OUT "%    from epsilon sub gt exch \n";
+    print $OUT "%    from epsilon add lt \n";
+    print $OUT "%   and\n";
+    print $OUT "%   { newpath 0 0 0 setrgbcolor 0 0 moveto 0 -3 rlineto stroke } if\n";
+    print $OUT "%  dup dup \n";
+    print $OUT "%    to epsilon 2 mul sub gt exch \n";
+    print $OUT "%    to epsilon 2 mul add lt \n";
+    print $OUT "%   and\n";
+    print $OUT "%   { newpath 0 0 0 setrgbcolor 10 0 moveto 0 -3 rlineto stroke } if\n";
+    print $OUT "%  0.2 exch 0.6 exch setrgbcolor   \n";
+    print $OUT "%  newpath\n";
+    print $OUT "%  0 0 moveto\n";
+    print $OUT "%  10 0 rlineto\n";
+    print $OUT "%  0 10  rlineto\n";
+    print $OUT "%  -10 0 rlineto\n";
+    print $OUT "%  closepath\n";
+    print $OUT "%  fill\n";
+    print $OUT "%  10 0 translate \n";
+    print $OUT "% } for\n";
+    print $OUT "% grestore\n";
+
+    print $OUT "% Print double pallet\n";
+    print $OUT "% NOTE: the values for the tics must correspond to start and\n";
+    print $OUT "%       end values in /get-color\n";
+    print $OUT "% gsave \n";
+    print $OUT "% 340 500 translate\n";
+    print $OUT "% 0.0 0.05 1.00 \n";
+    print $OUT "% { \n";
+    print $OUT "%   0 exch 0 setrgbcolor   \n";
+    print $OUT "%   newpath\n";
+    print $OUT "%   0 0 moveto\n";
+    print $OUT "%   10 0 rlineto\n";
+    print $OUT "%   0 10  rlineto\n";
+    print $OUT "%   -10 0 rlineto\n";
+    print $OUT "%   closepath\n";
+    print $OUT "%   fill\n";
+    print $OUT "%   10 0 translate \n";
+    print $OUT "% } for\n";
+    print $OUT "% grestore\n";
+    print $OUT "% gsave \n";
+    print $OUT "% 340 510 translate\n";
+    print $OUT "% 0.0 0.05 1.00 \n";
+    print $OUT "% { \n";
+    print $OUT "%   dup dup \n";
+    print $OUT "%     from epsilon sub gt exch \n";
+    print $OUT "%     from epsilon add lt \n";
+    print $OUT "%    and\n";
+    print $OUT "%    { newpath 0 0 0 setrgbcolor 0 3 moveto 0 -6 rlineto stroke } if\n";
+    print $OUT "%   dup dup \n";
+    print $OUT "%     to epsilon 2 mul sub gt exch \n";
+    print $OUT "%     to epsilon 2 mul add lt \n";
+    print $OUT "%    and\n";
+    print $OUT "%    { newpath 0 0 0 setrgbcolor 10 3 moveto 0 -6 rlineto stroke } if\n";
+    print $OUT "%    0.7 exch 0 setrgbcolor   \n";
+    print $OUT "%    newpath\n";
+    print $OUT "%    0 0 moveto\n";
+    print $OUT "%    10 0 rlineto\n";
+    print $OUT "%    0 10  rlineto\n";
+    print $OUT "%    -10 0 rlineto\n";
+    print $OUT "%    closepath\n";
+    print $OUT "%    fill\n";
+    print $OUT "%    10 0 translate \n";
+    print $OUT "% } for\n";
+    print $OUT "% grestore\n";
+    print $OUT "% ----------------------------------------------------------\n";
+    print $OUT "HE14 setfont\n";
+    print $OUT "100.000000 508.000000 moveto\n";
+    print $OUT "($pname  PEs: $nPEs  Lat.: $lat ) show\n";
+    
+    print $OUT "($date) dup stringwidth pop 750.000000 exch sub 508.000000 moveto show\n";
+    print $OUT ( $opt_m ? "5 512 asciilogo\n" : "5 512 logo\n");    
+    print $OUT "% 100 500 moveto\n";    
+
+    print $OUT "0 20 translate\n";
+
+    print $OUT "HE14 setfont\n";
+    for ($i=0; $i<$nPEs; $i++) {
+	$dist = $stripes_high[$i] - $stripes_low[$i];
+	$y = $stripes_low[$i] + $dist/2;
+	# print $OUT "/starlen $dist def\n";
+	# print $OUT "gsave 2 $y star grestore\n";
+	print $OUT "  2 " . ($stripes_low[$i]+1) . " moveto ($i) show\n";
+    }
+
+    print $OUT "20 0 translate\n";
+
+    print $OUT "% Print x-axis:\n";
+    print $OUT "1 setlinewidth\n";
+    print $OUT "0 -5 moveto total-len normalize 0 rlineto stroke\n";
+    print $OUT "gsave\n" .
+	       "[2 4] 1 setdash\n" .
+	       "0 0 moveto 0 $total_height rlineto stroke\n" .
+	       "% $x_max 0 moveto 0 $total_height rlineto stroke\n" .
+	       "grestore\n";
+    print $OUT "0 total-len 10 div total-len\n" .
+               " { dup normalize dup -5 moveto 0 -2 rlineto stroke  % tic\n" .
+               "   -17 moveto HE10 setfont round prt-n  % print label \n" .
+	       " } for \n";
+    
+
+    print $OUT "$x_scale  $y_scale  scale\n";
+
+    print $OUT "% ++++++++++++++++++++++++++++++++++++++++++++++++++\n\n";
+    
+    if ( $opt_D ) {
+	print $OUT "% Debugging info : \n";
+
+	print $OUT "% Offset is: $offset\n";
+
+	print $OUT "% y_val table: \n";
+	for ($i=0; $i<$nPEs; $i++) {
+	    print $OUT "% y_val of $i: $y_val[$i]\n";
+	}
+
+	print $OUT "% x-max: $x_max; y-max: $y_max\n";
+	print $OUT "% Info from header: Prg: $pname; PEs: $nPEs; Lat.: $lat\n";
+
+	print $OUT "% ++++++++++++++++++++++++++++++++++++++++++++++++++\n\n";
+    }
+}
+
+# ----------------------------------------------------------------------------
+
+sub write_epilog {
+    local ($OUT,$x_max, $y_max) = @_;
+    local($x_scale,$y_scale);
+
+    print $OUT "showpage\n";
+}
+
+# ----------------------------------------------------------------------------
+
+sub get_x_max {
+    local ($file) = @_;
+    local ($last_line, @fs);
+
+    open (TMP,"tail -1 $file |") || die "tail -1 $file | : $!\n";
+    while (<TMP>) {
+	$last_line = $_;
+    }
+    close(TMP);
+
+    @fs = split(/[:\[\]\s]+/,$last_line);
+
+    return $fs[2];
+}
+
+# ----------------------------------------------------------------------------
+#
+#sub get_date {
+#    local ($now,$today,@lt);
+#
+#    @lt = localtime(time);
+#    $now = join(":",reverse(splice(@lt,0,3)));
+#    $today = join(".",splice(@lt,0,3));
+#
+#    return $now . " on " . $today;
+#}
+#
+# ----------------------------------------------------------------------------
+
+sub get_date {
+    local ($date);
+
+    open (DATE,"date |") || die ("$!");
+    while (<DATE>) {
+	$date = $_;
+    }
+    close (DATE);
+
+    return ($date);
+}
+
+# -----------------------------------------------------------------------------
+
+sub generate_y_val_table {
+    local ($nPEs) = @_;
+    local($i, $y, $dist);
+
+    $dist = int($total_height/$nPEs);
+    for ($i=0, $y=1; $i<$nPEs; $i++, $y+=$dist) {
+	$y_val[$i] = $y + $lower_border;
+	$stripes_low[$i] = $y;
+	$stripes_high[$i] = $y+$dist-2;
+    }
+
+    # print $OUT "10 5 translate\n";
+
+    return ($dist);
+}
+
+# ----------------------------------------------------------------------------
+
+sub init { 
+    local ($nPEs) = @_;
+    local($i);
+
+    for ($i=0; $i<$nPEs; $i++) {
+	if ( $opt_S ) {
+	    $sparks[$i] = 0;
+	}
+	$blocked[$i] = 0;
+	$runnable[$i] = 0;
+	$fetching[$i] = 0;
+	$running[$i] = $NO_ID;
+	if ( $opt_S ) {
+	    $last_sp_bg[$i] = $NO_LAST_BG;
+	}
+	$last_bg[$i] = $NO_LAST_BG;
+	$last_start[$i] = $NO_LAST_START;
+	$last_blocked[$i] = $NO_LAST_BLOCKED;
+	$last_runnable[$i] = 0; 
+	#open($OUT_RA[$i], "PE". $i . ".dat") || die "PE".$i."-R.dat: $!\n";
+	#print $OUT_RA[$i] "# Number of Runnable tasks on PE $i\n";
+	#open($OUT_BA[$i], "PE". $i . ".dat") || die "PE".$i."-B.dat: $!\n";
+	#print $OUT_BA[$i] "# Number of Blocked tasks on PE $i\n";
+    } 
+    
+}
+
+
+# ----------------------------------------------------------------------------
+
+sub skip_header {
+    local ($FILE) = @_;
+    local($prg, $pars, $nPEs, $lat, $fetch, $in_header);
+
+    $in_header = 9;
+    while (<$FILE>) {
+	if ( $in_header = 9 ) {
+	    if (/^=/) {
+		$gum_style_gr = 1;
+		$in_header = 0;
+		$prg = "????";		# 
+		$pars = "-b??????";		# 
+		$nPEs = $opt_p ? $opt_p : 1; # 
+		$lat = $opt_l ? $opt_l : 1;
+		return ($prg, $pars, $nPEs, $lat);
+	    } else {
+		$gum_style_gr = 0;
+		$in_header = 1;
+	    }
+	    
+	}
+	$prg = $1, $pars = $2   if /^Granularity Simulation for\s+(\w+)\s+(.*)$/;
+	$nPEs = $1	        if /^PEs\s+(\d+)/;
+	$lat = $1, $fetch = $2  if /^Latency\s+(\d+)[^F]+Fetch\s+(\d+)/;
+	die "Can't process GranSim-Light profiles!\n"  if /^GrAnSim-Light$/i;
+
+	last             if /^\+\+\+\+\+/;
+    }
+
+    return ($prg, $pars, $nPEs, $lat);
+}
+
+# ----------------------------------------------------------------------------
+
+sub process_options {
+
+    if ( $opt_h ) {                      
+	open(ME,$0) || die "Can't open myself ($0): $!\n";
+	$n = 0;
+	while (<ME>) {
+	    last if $_ =~ /^$/;
+	    print $_;
+	    $n++;
+	}
+	close(ME);
+	exit ;
+    }
+    
+    if ( $#ARGV != 0 ) {
+	print "Usage: $0 [options] <gr-file>\n";
+	print "Use -h option to get details\n";
+	exit 1;
+    }
+    
+    $input = $ARGV[0] ;
+    $input =~ s/\.gr//;
+    $input .= ".gr";
+
+    if ( $opt_o ) {
+	($output   = $opt_o) =~ s/\.ps// ;
+	$output_b = $output . "_peb.ps";
+	$output_r = $output . "_per.ps";
+	$output_mig = $output . "_mig.ps" if $opt_M;
+	$output_sp = $output . "_sp.ps"   if $opt_S;
+	$output   = $output . "_pe.ps";
+	#($output_b = $opt_o) =~ s/\./-b./ ;
+	#($output_r = $opt_o) =~ s/\./-r./ ;
+	#($output_mig = $opt_o) =~ s/\./-mig./  if $opt_M;
+	#($output_sp = $opt_o) =~ s/\./-sp./  if $opt_S;
+    } else {
+	($output = $input) =~ s/\.gr// ;
+	$output_b = $output . "_peb.ps";
+	$output_r = $output . "_per.ps";
+	$output_mig = $output . "_mig.ps" if $opt_M;
+	$output_sp = $output . "_sp.ps"   if $opt_S;
+	$output   = $output . "_pe.ps";
+    }
+    
+    if ( $opt_v ){ 
+	$verbose = 1;
+    }    
+
+    if ( $opt_i ) {
+	$inf_block = $opt_i;
+    } else {
+	$inf_block = 20;
+    }
+
+    $RUNNABLE_file = $input;
+    $RUNNABLE_file =~ s/\.gr//;
+    $RUNNABLE_file .= "-R";
+
+    $BLOCKED_file = $input;
+    $BLOCKED_file =~ s/\.gr//;
+    $BLOCKED_file .= "-B";
+
+    $FETCHING_file = $input;
+    $FETCHING_file =~ s/\.gr//;
+    $FETCHING_file .= "-F";
+}
+
+# ----------------------------------------------------------------------------
+
+sub print_verbose_message {
+
+    print "Input file: $input\n";  
+    print "Output files: $output, $output_b, $output_r; ".
+          ($opt_M ? "Migration: $output_mig" : "") .
+	  ($opt_S ? "Sparks: $output_sp" : "") .
+	  "\n";
+}
+
+# ----------------------------------------------------------------------------
+# Junk from draw_segment:
+#
+#    if ( $type eq $RUNNING ) { 
+#	die "ERROR: This version should never draw a RUNNING segment!";
+#	$y = $y_val[$pe];
+#	$x = $last_start[$pe]; 
+#	$width = &get_width(0, $type);
+#	# $gray = 0;
+#
+#	if ( $is_very_big ) {	
+#	    $x = int($x/$shrink_x) + 1;   # rounded up
+#	}
+#
+#	do ps_draw_hline(OUT_B,$x,$y,$time,$width);
+#	do ps_draw_hline(OUT_R,$x,$y,$time,$width);  
+#
+#    } elsif ( $type eq $RUNNABLE ) {
+#	die "ERROR: This version should never draw a RUNNABLE segment (shades are used instead)!";
+#	$y = $y_val[$pe] + $offset;
+#	$x = $last_runnable[$pe];
+#	$width = &get_width($runnable[$pe], $type);
+#
+#	if ( $is_very_big ) {	
+#	    $x = int($x/$shrink_x) + 1;   # rounded up
+#	}
+#
+#	# $gray = 0.5;
+#	do ps_draw_hline(OUT_R,$x,$y,$time,$width);