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parallel: Use --total-jobs + --bar if input is generated slowly.
This commit is contained in:
Ole Tange
parent
53e3f5b7a3
commit
466e184d5f
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@ -176,6 +176,10 @@ torsocks git push
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torsocks git push origin $TAG
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torsocks git push origin $YYYYMMDD
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git branch -d premaster
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git branch premaster
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== Zenodo ==
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Add tar.bz2 [Start upload] and [Publish].
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@ -255,40 +259,23 @@ from:tange@gnu.org
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to:parallel@gnu.org, bug-parallel@gnu.org
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stable-bcc: Jesse Alama <jessealama@fastmail.fm>
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Subject: GNU Parallel 20221022 ('Nord Stream') released
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Subject: GNU Parallel 20221122 ('Lula/#MashaAmina') released
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GNU Parallel 20221022 ('Nord Stream') has been released. It is available for download at: lbry://@GnuParallel:4
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GNU Parallel 20221122 ('<<>>') has been released. It is available for download at: lbry://@GnuParallel:4
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Quote of the month:
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If used properly, #gnuparallel actually enables time travel.
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-- Dr. James Wasmuth @jdwasmuth@twitter
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<<>>
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New in this release:
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* --latest-line chops line length at terminal width.
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* Determine max command length faster on Microsoft Windows.
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* <<>>
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* Bug fixes and man page updates.
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News about GNU Parallel:
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* Distributed Task Processing with GNU Parallel https://www.youtube.com/watch?v=usbMLggdMgc
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* GNU Parallel workflow for many small, independent runs https://docs.csc.fi/support/tutorials/many/
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* Copy a File To Multiple Directories With A Single Command on Linux https://www.linuxfordevices.com/tutorials/linux/copy-file-to-multiple-directories-with-one-command
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* Behind The Scenes: The Power Of Simple Command Line Tools At Cloud Scale https://blog.gdeltproject.org/behind-the-scenes-the-power-of-simple-command-line-tools-at-cloud-scale/
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* Run lz4 compression in parallel using GNU parallel https://www.openguru.com/2022/09/
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* Xargs / Parallel With Code Examples https://www.folkstalk.com/2022/09/xargs-parallel-with-code-examples.html
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* Parallel processing on a single node with GNU Parallel https://www3.cs.stonybrook.edu/~cse416/Section01/Slides/SeaWulfIntro_CSE416_09222022.pdf
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* Using GNU parallel painlessly -- from basics to bioinformatics job orchestration https://www.youtube.com/watch?v=qypUdm-IE9c
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* <<>>
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GNU Parallel - For people who live life in the parallel lane.
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@ -1922,6 +1922,8 @@ sub options_completion_hash() {
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("eta[Show the estimated number of seconds before finishing]"
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=> \$opt::eta),
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"bar[Show progress as a progress bar]" => \$opt::bar,
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("total-jobs|totaljobs|total=s".
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"[Set total number of jobs]" => \$opt::totaljobs),
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"shuf[Shuffle jobs]" => \$opt::shuf,
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("arg-sep|argsep=s".
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"[Use sep-str instead of ::: as separator string]:sep-str"
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@ -8873,7 +8875,9 @@ sub total_jobs($) {
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::error("--pipe is incompatible with --eta/--bar/--shuf");
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::wait_and_exit(255);
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}
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if($opt::sqlworker) {
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if($opt::totaljobs) {
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$self->{'total_jobs'} = $opt::totaljobs;
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} elsif($opt::sqlworker) {
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$self->{'total_jobs'} = $Global::sql->total_jobs();
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} else {
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my $record;
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@ -556,6 +556,8 @@ It is compatible with B<zenity>:
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2> >(perl -pe 'BEGIN{$/="\r";$|=1};s/\r/\n/g' |
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zenity --progress --auto-kill) | wc
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See also: B<--eta> B<--progress> B<--total-jobs>
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=item B<--basefile> I<file>
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@ -3053,6 +3055,10 @@ If I<password> is given, B<sshpass> will be used. Otherwise the
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sshlogin must not require a password (B<ssh-agent> and B<ssh-copy-id>
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may help with that).
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If the hostname is an IPv6 address, the port can be given separated
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with p or #. If the address is enclosed in [] you can also use :.
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E.g. ::1p2222 ::1#2222 [::1]:2222
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The sshlogin ':' is special, it means 'no ssh' and will therefore run
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on the local computer.
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@ -3280,6 +3286,20 @@ dies before the waiting time is up.
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See also: B<--halt> B<--timeout> B<--memfree>
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=item B<--total-jobs> I<jobs> (alpha testing)
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=item B<--total> I<jobs> (alpha testing)
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Provide the total number of jobs for computing ETA which is also used
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for B<--bar>.
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Without B<--total-jobs> GNU Parallel will read all jobs before
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starting a job. B<--total-jobs> is useful if the input is generated
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slowly.
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See also: B<--bar> B<--eta>
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=item B<--tmpdir> I<dirname>
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Directory for temporary files.
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@ -4295,8 +4315,8 @@ by others, the output might help them figure out the problem.
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Whether you have watched the intro videos
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(https://www.youtube.com/playlist?list=PL284C9FF2488BC6D1), walked
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through the tutorial (man parallel_tutorial), and read the EXAMPLE
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section in the man page (man parallel - search for EXAMPLE:).
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through the tutorial (man parallel_tutorial), and read the examples
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(man parallel_examples).
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=back
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@ -772,13 +772,16 @@ printed as soon as possible you can use B<-u>.
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Compare the output of:
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parallel wget --limit-rate=100k \
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parallel wget --progress=dot --limit-rate=100k \
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https://ftpmirror.gnu.org/parallel/parallel-20{}0822.tar.bz2 \
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::: {12..16}
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parallel --line-buffer wget --limit-rate=100k \
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parallel --line-buffer wget --progress=dot --limit-rate=100k \
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https://ftpmirror.gnu.org/parallel/parallel-20{}0822.tar.bz2 \
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::: {12..16}
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parallel -u wget --limit-rate=100k \
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parallel --latest-line wget --progress=dot --limit-rate=100k \
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https://ftpmirror.gnu.org/parallel/parallel-20{}0822.tar.bz2 \
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::: {12..16}
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parallel -u wget --progress=dot --limit-rate=100k \
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https://ftpmirror.gnu.org/parallel/parallel-20{}0822.tar.bz2 \
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::: {12..16}
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@ -8,6 +8,20 @@
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# Each should be taking 10-30s and be possible to run in parallel
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# I.e.: No race conditions, no logins
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par_totaljobs() {
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. `which env_parallel.bash`
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myrun() {
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total="$@"
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slowseq() { seq "$@" | pv -qL 3; }
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elapsed() { /usr/bin/time -f %e stdout "$@" 2>&1 >/dev/null; }
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slowseq 5 | elapsed parallel -j 1 $total --bar 'sleep 1; true'
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}
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export -f myrun
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parset mytime myrun ::: '' '--total 5'
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# --total should run > 2 sec faster
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perl -E 'say ((2+shift) < (shift) ? "Error: --total should be faster" : "OK")' ${mytime[0]} ${mytime[1]}
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}
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par_ll_long_line() {
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echo '### --latest-line with lines longer than terminal width'
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COLUMNS=30 parallel --delay 0.3 --tagstring '{=$_.="x"x$_=}' \
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@ -960,10 +960,10 @@ par_sem_quote ### sem --quote should not add empty argument
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par_sem_quote echo
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par_sem_quote
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par_shellcompletion ### --shellcompletion
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par_shellcompletion 863f31c091219fc53dc89fd707f5995b -
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par_shellcompletion 863f31c091219fc53dc89fd707f5995b -
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par_shellcompletion 88a69a99c93b79b5ed6491c80e9762b0 -
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par_shellcompletion 88a69a99c93b79b5ed6491c80e9762b0 -
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par_shellcompletion 139a52b9a64a9fd8ec1f63c2d78ff9ac -
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par_shellcompletion 139a52b9a64a9fd8ec1f63c2d78ff9ac -
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par_shellcompletion 01947895bda95d99e1b8948a31b1c1f7 -
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par_shellcompletion 01947895bda95d99e1b8948a31b1c1f7 -
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par_slow_pipe_regexp ### bug #53718: --pipe --regexp -N blocks
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par_slow_pipe_regexp This should take a few ms, but took more than 2 hours
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par_slow_pipe_regexp 0 1 1
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@ -1074,6 +1074,7 @@ par_tmp_full parallel: Error: Change $TMPDIR with --tmpdir or use --compress.
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par_tmux_fg bug #50107: --tmux --fg should also write how to access it
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par_tmux_fg See output with: tmux -S tmp attach
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par_tmux_fg open terminal failed: not a terminal
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par_totaljobs OK
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par_xargs_compat xargs compatibility
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par_xargs_compat ### Test -L -l and --max-lines
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par_xargs_compat a_b
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@ -120,7 +120,7 @@ par_kill_hup parallel: bash -c 'sleep 3 & pid=$!; wait $pid'
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par_kill_hup bash---pstree
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par_ll_lb_color bug #62386: --color (--ctag but without --tag)
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par_ll_lb_color bug #62438: See last line from multiple jobslots
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par_ll_lb_color 29fcbb4944fef7ba0cd0fa8358dba815 -
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par_ll_lb_color c13699ada05324a5bab5aee05d97aa55 -
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par_more_than_9_relative_sshlogin ### Check more than 9(relative) simultaneous sshlogins
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par_more_than_9_relative_sshlogin 1
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par_more_than_9_relative_sshlogin 2
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