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Add verilator_gantt warning when too few cpus (#2590)

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This commit is contained in:
Wilson Snyder 2020-10-09 21:27:46 -04:00
parent 215d3614c0
commit 7c05033b79
1 changed files with 8 additions and 1 deletions
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9
bin/verilator_gantt
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@ -156,7 +156,8 @@ sub report {
print "\nAnalysis:\n";
printf " Total threads = %d\n", $nthreads;
printf " Total mtasks = %d\n", scalar(keys %Mtasks);
printf " Total cpus used = %d\n", scalar(keys %{$Global{cpus}});
my $ncpus = scalar(keys %{$Global{cpus}});
printf " Total cpus used = %d\n", $ncpus;
printf " Total yields = %d\n", $Global{stats}{yields};
printf " Total eval time = %d rdtsc ticks\n", $Global{last_end};
printf " Longest mtask time = %d rdtsc ticks\n", $long_mtask_time;
@ -206,6 +207,12 @@ sub report {
print " stddev = " . ($stddev) . "\n";
print " e ^ stddev = " . exp($stddev). "\n";
print "\n";
if ($nthreads > $ncpus) {
print "%Warning: There were fewer CPUs ($ncpus) then threads ($nthreads).\n";
print " : See docs on use of numactl.\n";
print "\n";
}
}
sub report_graph {