source: benchmark/Makefile.am @ ce9338c

ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change on this file since ce9338c was e15683e, checked in by Thierry Delisle <tdelisle@…>, 4 years ago

Added benchmark for data sizes

  • Property mode set to 100644
File size: 15.5 KB
Line 
1######################## -*- Mode: Makefile-Automake -*- ######################
2##
3## Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
4##
5## The contents of this file are covered under the licence agreement in the
6## file "LICENCE" distributed with Cforall.
7##
8## Makefile.am --
9##
10## Author           : Peter A. Buhr
11## Created On       : Sun May 31 09:08:15 2015
12## Last Modified By : Peter A. Buhr
13## Last Modified On : Sat Jan 25 09:20:44 2020
14## Update Count     : 255
15###############################################################################
16
17AUTOMAKE_OPTIONS = foreign    # do not require all the GNU file names
18ACLOCAL_AMFLAGS  = -I automake
19
20# applies to both programs
21include $(top_srcdir)/src/cfa.make
22
23AM_CFLAGS = -O2 -Wall -Wextra -I$(srcdir) -lrt -pthread # -Werror
24AM_CFAFLAGS = -quiet -debug
25AM_UPPFLAGS = -quiet -debug -multi -std=c++14
26
27BENCH_V_CC = $(__bench_v_CC_$(__quiet))
28BENCH_V_CFA = $(__bench_v_CFA_$(__quiet))
29BENCH_V_CXX = $(__bench_v_CXX_$(__quiet))
30BENCH_V_UPP = $(__bench_v_UPP_$(__quiet))
31BENCH_V_GOC = $(__bench_v_GOC_$(__quiet))
32BENCH_V_PY = $(__bench_v_PY_$(__quiet))
33BENCH_V_RUSTC = $(__bench_v_RUSTC_$(__quiet))
34BENCH_V_NODEJS = $(__bench_v_NODEJS_$(__quiet))
35BENCH_V_JAVAC = $(__bench_v_JAVAC_$(__quiet))
36
37__quiet = verbose
38__bench_v_CC_quiet = @
39__bench_v_CFA_quiet = @
40__bench_v_CXX_quiet = @
41__bench_v_UPP_quiet = @
42__bench_v_GOC_quiet = @
43__bench_v_RUSTC_quiet = @
44__bench_v_JAVAC_quiet = @
45__bench_v_CC_verbose = $(AM_V_CC)
46__bench_v_CFA_verbose = $(AM_V_CFA)
47__bench_v_CXX_verbose = $(AM_V_CXX)
48__bench_v_UPP_verbose = $(AM_V_UPP)
49__bench_v_GOC_verbose = $(AM_V_GOC)
50__bench_v_PY_verbose = $(AM_V_PY)
51__bench_v_RUSTC_verbose = $(AM_V_RUST)
52__bench_v_NODEJS_verbose = $(AM_V_NODEJS)
53__bench_v_JAVAC_verbose = $(AM_V_JAVAC)
54
55
56TOOLSDIR = ${abs_top_builddir}/tools/
57REPEAT   = ${abs_top_builddir}/tools/repeat
58STATS    = ${abs_top_srcdir}/tools/stat.py
59# NEED AT LEAST 4 DATA VALUES FOR BENCHMARKS BECAUSE THE MAX AND MIN VALUES ARE REMOVED
60repeats  = 13 # 31 for benchmarks
61arch     = x64
62skipcompile = no
63TIME_FORMAT = "%E"
64PRINT_FORMAT = %20s: #Comments needed for spacing
65
66# Dummy hack tricks
67EXTRA_PROGRAMS = dummy # build but do not install
68dummy_SOURCES = dummyC.c dummyCXX.cpp
69
70dummyC.c:
71        echo "int main() { return 0; }" > ${@}
72
73dummyCXX.cpp:
74        echo "int main() { return 0; }" > ${@}
75
76.SILENT:                # do not print recipe
77.NOTPARALLEL:
78.PHONY: jenkins cleancsv
79
80## =========================================================================================================
81
82all : basic$(EXEEXT) ctxswitch$(EXEEXT) mutex$(EXEEXT) schedint$(EXEEXT) schedext$(EXEEXT) creation$(EXEEXT)
83
84basic_loop_DURATION = 15000000000
85basic_function_DURATION = 10000000000
86basic_tls_fetch_add_DURATION = 10000000000
87basic_DURATION = 250000000
88
89ctxswitch_pthread_DURATION = 25000000
90ctxswitch_rust_thread_DURATION = $(ctxswitch_pthread_DURATION)
91ctxswitch_cfa_generator_DURATION = 5000000000
92ctxswitch_nodejs_await_DURATION = 5000000
93ctxswitch_DURATION = 100000000
94
95#mutex_java_DURATION = 10000000
96mutex_DURATION = 50000000
97
98schedint_pthread_DURATION = 1000000
99schedint_java_DURATION = $(schedint_pthread_DURATION)
100schedint_rust_DURATION = $(schedint_pthread_DURATION)
101schedint_DURATION = 10000000
102
103schedext_DURATION = 10000000
104
105creation_pthread_DURATION = 250000
106creation_rust_thread_DURATION = ${creation_pthread_DURATION}
107creation_java_thread_DURATION = ${creation_pthread_DURATION}
108creation_cfa_coroutine_DURATION = 100000000
109creation_cfa_coroutine_eager_DURATION = 10000000
110creation_upp_coroutine_DURATION = ${creation_cfa_coroutine_eager_DURATION}
111creation_cfa_thread_DURATION = 10000000
112creation_upp_thread_DURATION = ${creation_cfa_thread_DURATION}
113creation_DURATION = 10000000
114
115%.run : %$(EXEEXT) ${REPEAT}
116        rm -f .result.log
117        echo "------------------------------------------------------"
118        echo $<
119        ${REPEAT} ${repeats} -- ./a.out\
120                $(if ${$(subst -,_,$(basename $@))_DURATION},\
121                        ${$(subst -,_,$(basename $@))_DURATION},\
122                        ${$(firstword $(subst -, ,$(basename $@)))_DURATION}) | tee -a .result.log
123        ${STATS} .result.log
124        echo "------------------------------------------------------"
125        rm -f a.out .result.log *.class
126
127#       ${REPEAT} ${repeats} -- /usr/bin/time -f "%Uu %Ss %Er %Mkb" ./a.out
128
129%.runquiet :
130        +make $(basename $@) CFLAGS="-w" __quiet=quiet
131        taskset -c 1 ./a.out
132        rm -f a.out
133
134%.make :
135        printf "${PRINT_FORMAT}" $(basename $(subst compile-,,$@))
136        +/usr/bin/time -f ${TIME_FORMAT} make $(basename $@) 2>&1
137
138${REPEAT} :
139        +make -C ${abs_top_builddir}/tools repeat
140
141## =========================================================================================================
142
143FIX_NEW_LINES = cat $@ | tr "\n" "\t" | sed -r 's/\t,/,/' | tr "\t" "\n" > $@
144
145cleancsv:
146        rm -f compile.csv basic.csv ctxswitch.csv mutex.csv scheduling.csv
147
148jenkins$(EXEEXT): cleancsv
149@DOifskipcompile@
150        +make compile.csv
151        -+make compile.diff.csv
152@DOendif@
153        +make ctxswitch.csv
154        -+make ctxswitch.diff.csv
155        +make mutex.csv
156        -+make mutex.diff.csv
157        +make scheduling.csv
158        -+make scheduling.diff.csv
159@DOifskipcompile@
160        cat compile.csv
161        -cat compile.diff.csv
162@DOendif@
163        cat ctxswitch.csv
164        -cat ctxswitch.diff.csv
165        cat mutex.csv
166        -cat mutex.diff.csv
167        cat scheduling.csv
168        -cat scheduling.diff.csv
169
170compile.csv:
171        echo "building $@"
172        echo "array,attributes,empty,expression,io,monitor,operators,typeof" > $@
173        +make TIME_FORMAT='%e,' PRINT_FORMAT='' compile-array.make >> $@
174        +make TIME_FORMAT='%e,' PRINT_FORMAT='' compile-attributes.make >> $@
175        +make TIME_FORMAT='%e,' PRINT_FORMAT='' compile-empty.make >> $@
176        +make TIME_FORMAT='%e,' PRINT_FORMAT='' compile-expression.make >> $@
177        +make TIME_FORMAT='%e,' PRINT_FORMAT='' compile-io.make >> $@
178        +make TIME_FORMAT='%e,' PRINT_FORMAT='' compile-monitor.make >> $@
179        +make TIME_FORMAT='%e,' PRINT_FORMAT='' compile-operators.make >> $@
180        +make TIME_FORMAT='%e' PRINT_FORMAT='' compile-typeof.make >> $@
181        $(srcdir)/fixcsv.sh $@
182
183ctxswitch.csv:
184        echo "building $@"
185        echo "generator,coroutine,thread" > $@
186        +make ctxswitch-cfa_generator.runquiet >> $@ && echo -n ',' >> $@
187        +make ctxswitch-cfa_coroutine.runquiet >> $@ && echo -n ',' >> $@
188        +make ctxswitch-cfa_thread.runquiet >> $@
189        $(srcdir)/fixcsv.sh $@
190
191mutex.csv:
192        echo "building $@"
193        echo "1-monitor,2-monitor" > $@
194        +make mutex-cfa1.runquiet >> $@ && echo -n ',' >> $@
195        +make mutex-cfa2.runquiet >> $@
196        $(srcdir)/fixcsv.sh $@
197
198scheduling.csv:
199        echo "building $@"
200        echo "schedint-1,schedint-2,schedext-1,schedext-2" > $@
201        +make schedint-cfa1.runquiet >> $@ && echo -n ',' >> $@
202        +make schedint-cfa2.runquiet >> $@ && echo -n ',' >> $@
203        +make schedext-cfa1.runquiet >> $@ && echo -n ',' >> $@
204        +make schedext-cfa2.runquiet >> $@
205        $(srcdir)/fixcsv.sh $@
206
207%.diff.csv: %.csv
208        test -e $(srcdir)/baselines/$(arch)/$< || (echo "Error : Missing baseline for ${<}" && false)
209        $(srcdir)/baselines/calc.py $(srcdir)/baselines/$(arch)/$(<) $(<) > $@
210
211## =========================================================================================================
212
213BASIC_DEPEND  =                                 \
214        basic-loop.run                          \
215        basic-function.run                      \
216        basic-fetch_add.run                     \
217        basic-ttst_lock.run                     \
218        basic-tls-fetch_add.run
219
220basic-loop$(EXEEXT):
221        $(BENCH_V_CC)$(COMPILE) $(srcdir)/basic/loop.c
222
223basic-function$(EXEEXT):
224        $(BENCH_V_CC)$(COMPILE) $(srcdir)/basic/function.c
225
226basic-fetch_add$(EXEEXT):
227        $(BENCH_V_CC)$(COMPILE) $(srcdir)/basic/fetch_add.c
228
229basic-ttst_lock$(EXEEXT):
230        $(BENCH_V_CC)$(COMPILE) $(srcdir)/basic/ttst_lock.c
231
232basic-tls-fetch_add$(EXEEXT):
233        $(BENCH_V_CC)$(COMPILE) $(srcdir)/basic/tls_fetch_add.c
234
235basic$(EXEEXT): $(BASIC_DEPEND)
236
237## =========================================================================================================
238
239CTXSWITCH_DEPEND  =                     \
240        ctxswitch-cfa_generator.run     \
241        ctxswitch-cfa_coroutine.run     \
242        ctxswitch-cfa_thread.run        \
243        ctxswitch-cfa_thread2.run       \
244        ctxswitch-upp_coroutine.run     \
245        ctxswitch-upp_thread.run        \
246        ctxswitch-python_coroutine.run  \
247        ctxswitch-nodejs_coroutine.run  \
248        ctxswitch-nodejs_await.run      \
249        ctxswitch-goroutine_thread.run  \
250        ctxswitch-rust_thread.run       \
251        ctxswitch-nodejs_coroutine.run  \
252        ctxswitch-java_thread.run       \
253        ctxswitch-pthread.run
254
255if WITH_LIBFIBRE
256CTXSWITCH_DEPEND  +=                    \
257        ctxswitch-kos_fibre.run         \
258        ctxswitch-kos_fibre2.run
259
260ctxswitch-kos_fibre$(EXEEXT):
261        $(BENCH_V_CXX)$(CXXCOMPILE) -DBENCH_N=50000000 $(srcdir)/ctxswitch/kos_fibre.cpp  -I$(LIBFIBRE_DIR) -lfibre
262
263ctxswitch-kos_fibre2$(EXEEXT):
264        $(BENCH_V_CXX)$(CXXCOMPILE) -DBENCH_N=50000000 $(srcdir)/ctxswitch/kos_fibre2.cpp -I$(LIBFIBRE_DIR) -lfibre
265endif
266
267ctxswitch$(EXEEXT): $(CTXSWITCH_DEPEND)
268
269ctxswitch-cfa_generator$(EXEEXT):
270        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/ctxswitch/cfa_gen.cfa
271
272ctxswitch-cfa_coroutine$(EXEEXT):
273        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/ctxswitch/cfa_cor.cfa
274
275ctxswitch-cfa_thread$(EXEEXT):
276        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/ctxswitch/cfa_thrd.cfa
277
278ctxswitch-cfa_thread2$(EXEEXT):
279        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/ctxswitch/cfa_thrd2.cfa
280
281ctxswitch-upp_coroutine$(EXEEXT):
282        $(BENCH_V_UPP)$(UPPCOMPILE) $(srcdir)/ctxswitch/upp_cor.cc
283
284ctxswitch-upp_thread$(EXEEXT):
285        $(BENCH_V_UPP)$(UPPCOMPILE) $(srcdir)/ctxswitch/upp_thrd.cc
286
287ctxswitch-python_coroutine$(EXEEXT):
288        $(BENCH_V_PY)echo "#!/bin/sh" > a.out
289        echo "python3.7 $(srcdir)/ctxswitch/python_cor.py" >> a.out
290        chmod a+x a.out
291
292ctxswitch-nodejs_coroutine$(EXEEXT):
293        $(BENCH_V_NODEJS)echo "#!/bin/sh" > a.out
294        echo "nodejs $(srcdir)/ctxswitch/node_cor.js" >> a.out
295        chmod a+x a.out
296
297ctxswitch-nodejs_await$(EXEEXT):
298        $(BENCH_V_NODEJS)echo "#!/bin/sh" > a.out
299        echo "nodejs $(srcdir)/ctxswitch/node_await.js" >> a.out
300        chmod a+x a.out
301
302ctxswitch-goroutine_thread$(EXEEXT):
303        $(BENCH_V_GOC)go build -o a.out $(srcdir)/ctxswitch/goroutine.go
304
305ctxswitch-rust_thread$(EXEEXT):
306        $(BENCH_V_RUSTC)rustc -C opt-level=3 -o a.out $(srcdir)/ctxswitch/rust_thrd.rs
307
308ctxswitch-java_thread$(EXEEXT):
309        $(BENCH_V_JAVAC)javac -d $(builddir) $(srcdir)/ctxswitch/JavaThread.java
310        echo "#!/bin/sh" > a.out
311        echo "java JavaThread" >> a.out
312        chmod a+x a.out
313
314ctxswitch-pthread$(EXEEXT):
315        $(BENCH_V_CC)$(COMPILE) $(srcdir)/ctxswitch/pthreads.c
316
317## =========================================================================================================
318
319mutex$(EXEEXT) :                \
320        mutex-cfa1.run          \
321        mutex-cfa2.run          \
322        mutex-cfa4.run          \
323        mutex-upp.run           \
324        mutex-go.run            \
325        mutex-rust.run          \
326        mutex-java.run          \
327        mutex-pthread.run
328
329mutex-pthread$(EXEEXT):
330        $(BENCH_V_CC)$(COMPILE) $(srcdir)/mutex/pthreads.c
331
332mutex-cfa1$(EXEEXT):
333        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/mutex/cfa1.cfa
334
335mutex-cfa2$(EXEEXT):
336        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/mutex/cfa2.cfa
337
338mutex-cfa4$(EXEEXT):
339        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/mutex/cfa4.cfa
340
341mutex-upp$(EXEEXT):
342        $(BENCH_V_UPP)$(UPPCOMPILE) $(srcdir)/mutex/upp.cc
343
344mutex-go$(EXEEXT):
345        $(BENCH_V_GOC)go build -o a.out $(srcdir)/mutex/goroutine.go
346
347mutex-rust$(EXEEXT):
348        $(BENCH_V_RUSTC)rustc -C opt-level=3 -o a.out $(srcdir)/mutex/rust.rs
349
350mutex-java$(EXEEXT):
351        $(BENCH_V_JAVAC)javac -d $(builddir) $(srcdir)/mutex/JavaThread.java
352        echo "#!/bin/sh" > a.out
353        echo "java JavaThread" >> a.out
354        chmod a+x a.out
355
356## =========================================================================================================
357
358schedint$(EXEEXT) :             \
359        schedint-cfa1.run       \
360        schedint-cfa2.run       \
361        schedint-cfa4.run       \
362        schedint-upp.run        \
363        schedint-rust.run       \
364        schedint-java.run       \
365        schedint-pthread.run
366
367schedint-cfa1$(EXEEXT):
368        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/schedint/cfa1.cfa
369
370schedint-cfa2$(EXEEXT):
371        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/schedint/cfa2.cfa
372
373schedint-cfa4$(EXEEXT):
374        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/schedint/cfa4.cfa
375
376schedint-upp$(EXEEXT):
377        $(BENCH_V_UPP)$(UPPCOMPILE) $(srcdir)/schedint/upp.cc
378
379schedint-rust$(EXEEXT):
380        $(BENCH_V_RUSTC)rustc -C opt-level=3 -o a.out $(srcdir)/schedint/rust.rs
381
382schedint-java$(EXEEXT):
383        $(BENCH_V_JAVAC)javac -d $(builddir) $(srcdir)/schedint/JavaThread.java
384        echo "#!/bin/sh" > a.out
385        echo "java JavaThread" >> a.out
386        chmod a+x a.out
387
388schedint-pthread$(EXEEXT):
389        $(BENCH_V_CC)$(COMPILE) $(srcdir)/schedint/pthreads.c
390
391## =========================================================================================================
392
393schedext$(EXEEXT) :             \
394        schedext-cfa1.run       \
395        schedext-cfa2.run       \
396        schedext-cfa4.run       \
397        schedext-upp.run        \
398        schedext-goroutine.run
399
400schedext-cfa1$(EXEEXT):
401        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/schedext/cfa1.cfa
402
403schedext-cfa2$(EXEEXT):
404        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/schedext/cfa2.cfa
405
406schedext-cfa4$(EXEEXT):
407        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/schedext/cfa4.cfa
408
409schedext-upp$(EXEEXT):
410        $(BENCH_V_UPP)$(UPPCOMPILE) $(srcdir)/schedext/upp.cc
411
412schedext-goroutine$(EXEEXT):
413        $(BENCH_V_GOC)go build -o a.out $(srcdir)/schedext/goroutine.go
414
415
416## =========================================================================================================
417
418creation$(EXEEXT) :                             \
419        creation-cfa_generator.run              \
420        creation-cfa_coroutine.run              \
421        creation-cfa_coroutine_eager.run        \
422        creation-cfa_thread.run                 \
423        creation-upp_coroutine.run              \
424        creation-upp_thread.run                 \
425        creation-python_coroutine.run           \
426        creation-nodejs_coroutine.run           \
427        creation-goroutine_thread.run           \
428        creation-rust_thread.run                \
429        creation-java_thread.run                \
430        creation-pthread.run
431
432creation-cfa_generator$(EXEEXT):
433        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/creation/cfa_gen.cfa
434
435creation-cfa_coroutine$(EXEEXT):
436        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/creation/cfa_cor.cfa
437
438creation-cfa_coroutine_eager$(EXEEXT):
439        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/creation/cfa_cor.cfa  -DEAGER
440
441creation-cfa_thread$(EXEEXT):
442        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/creation/cfa_thrd.cfa
443
444creation-upp_coroutine$(EXEEXT):
445        $(BENCH_V_UPP)$(UPPCOMPILE) $(srcdir)/creation/upp_cor.cc
446
447creation-upp_thread$(EXEEXT):
448        $(BENCH_V_UPP)$(UPPCOMPILE) $(srcdir)/creation/upp_thrd.cc
449
450creation-python_coroutine$(EXEEXT):
451        $(BENCH_V_PY)echo "#!/bin/sh" > a.out
452        echo "python3.7 $(srcdir)/creation/python_cor.py" >> a.out
453        chmod a+x a.out
454
455creation-nodejs_coroutine$(EXEEXT):
456        $(BENCH_V_NODEJS)echo "#!/bin/sh" > a.out
457        echo "nodejs $(srcdir)/creation/node_cor.js" >> a.out
458        chmod a+x a.out
459
460creation-goroutine_thread$(EXEEXT):
461        $(BENCH_V_GOC)go build -o a.out $(srcdir)/creation/goroutine.go
462
463creation-rust_thread$(EXEEXT):
464        $(BENCH_V_RUSTC)rustc -C opt-level=3 -o a.out $(srcdir)/creation/rust_thrd.rs
465
466creation-java_thread$(EXEEXT):
467        $(BENCH_V_JAVAC)javac -d $(builddir) $(srcdir)/creation/JavaThread.java
468        echo "#!/bin/sh" > a.out
469        echo "java JavaThread" >> a.out
470        chmod a+x a.out
471
472creation-pthread$(EXEEXT):
473        $(BENCH_V_CC)$(COMPILE) $(srcdir)/creation/pthreads.c
474
475## =========================================================================================================
476
477compile$(EXEEXT) :              \
478        compile-array.make      \
479        compile-attributes.make \
480        compile-empty.make      \
481        compile-expression.make \
482        compile-io.make         \
483        compile-monitor.make    \
484        compile-operators.make  \
485        compile-typeof.make
486
487testdir = $(top_srcdir)/tests
488
489compile-array$(EXEEXT):
490        $(CFACOMPILE) -fsyntax-only -w $(testdir)/array.cfa
491
492compile-attributes$(EXEEXT):
493        $(CFACOMPILE) -fsyntax-only -w $(testdir)/attributes.cfa
494
495compile-empty$(EXEEXT):
496        $(CFACOMPILE) -fsyntax-only -w $(srcdir)/compile/empty.cfa
497
498compile-expression$(EXEEXT):
499        $(CFACOMPILE) -fsyntax-only -w $(testdir)/expression.cfa
500
501compile-io$(EXEEXT):
502        $(CFACOMPILE) -fsyntax-only -w $(testdir)/io1.cfa
503
504compile-monitor$(EXEEXT):
505        $(CFACOMPILE) -fsyntax-only -w $(testdir)/concurrent/monitor.cfa
506
507compile-operators$(EXEEXT):
508        $(CFACOMPILE) -fsyntax-only -w $(testdir)/operators.cfa
509
510compile-thread$(EXEEXT):
511        $(CFACOMPILE) -fsyntax-only -w $(testdir)/concurrent/thread.cfa
512
513compile-typeof$(EXEEXT):
514        $(CFACOMPILE) -fsyntax-only -w $(testdir)/typeof.cfa
515
516## =========================================================================================================
517
518size$(EXEEXT) : size-cfa.runquiet
519
520size-cfa$(EXEEXT):
521        $(BENCH_V_CFA)$(CFACOMPILE) $(srcdir)/size/size.cfa
Note: See TracBrowser for help on using the repository browser.