[PATCH] parallelize g++ testing a bit more

[PATCH] parallelize g++ testing a bit more

[Nathan Froyd]

I've done a lot of g++-only testsuite runs lately and I noticed that it
didn't parallelize all that well.  The patch below adds a couple more
.exp files to the parallel infrastructure.  dg-torture.exp is the big
one; it takes about as much time as old-deja.exp.

Other valid candidates are lto.exp and debug.exp, but the patch cuts g++
testing time in half as-is, so I felt it was a sufficient stopping
point.

OK to commit?

-Nathan

gcc/cp/
	* Make-lang.in (check_g++_parallelize): Add more .exp files.

diff --git a/gcc/cp/Make-lang.in b/gcc/cp/Make-lang.in
index 45efd67..95bae37 100644
--- a/gcc/cp/Make-lang.in
+++ b/gcc/cp/Make-lang.in
@@ -154,7 +154,7 @@ check-c++-subtargets : check-g++-subtargets
 lang_checks += check-g++
 lang_checks_parallelized += check-g++
 # For description see comment above check_gcc_parallelize in gcc/Makefile.in.
-check_g++_parallelize = old-deja.exp dg.exp
+check_g++_parallelize = old-deja.exp dg.exp dg-torture.exp struct-layout-1.exp
 
 #\f
 # Install hooks:

Re: [PATCH] parallelize g++ testing a bit more

[Jason Merrill]

OK.

Jason

Re: [PATCH] parallelize g++ testing a bit more

[Mike Stump]

On Jun 17, 2011, at 10:47 AM, Nathan Froyd wrote:
> I've done a lot of g++-only testsuite runs lately

I think it is reasonable to have even more of them, say, if you have 16 cores and just test c++...  I wonder what the scaling is like as we approach larger N.  :-)

Re: [PATCH] parallelize g++ testing a bit more

[Rainer Orth]

Mike Stump <mikestump@comcast.net> writes:

> On Jun 17, 2011, at 10:47 AM, Nathan Froyd wrote:
>> I've done a lot of g++-only testsuite runs lately
>
> I think it is reasonable to have even more of them, say, if you have
> 16 cores and just test c++...  I wonder what the scaling is like as we
> approach larger N.  :-)

I've got a patch to do this, prompted by the use of UltraSPARC-T2
machines with 8 cores/8 strands which are quite slow on their own:

	[build, testsuite, v3] Increase gcc, g++, gfortran and libstdc++-v3 testsuite parallelism
        http://gcc.gnu.org/ml/gcc-patches/2010-07/msg01633.html

but haven't yet incorporated Jakub's comments.

	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University

Re: [PATCH] parallelize g++ testing a bit more

[Jason Merrill]

On 06/17/2011 08:20 PM, Mike Stump wrote:
> On Jun 17, 2011, at 10:47 AM, Nathan Froyd wrote:
>> I've done a lot of g++-only testsuite runs lately
>
> I think it is reasonable to have even more of them, say, if you have 16 cores and just test c++...  I wonder what the scaling is like as we approach larger N.  :-)

In my test runs, one of the libstdc++ batches (normal3) takes longer 
than any of the g++ batches, so breaking that up would be more effective 
for me.  :)

Jason

Re: [PATCH] parallelize g++ testing a bit more

[Mike Stump]

On Jun 20, 2011, at 4:06 AM, Rainer Orth wrote:
> I've got a patch to do this, prompted by the use of UltraSPARC-T2
> machines with 8 cores/8 strands which are quite slow on their own:
> 
> 	[build, testsuite, v3] Increase gcc, g++, gfortran and libstdc++-v3 testsuite parallelism
>        http://gcc.gnu.org/ml/gcc-patches/2010-07/msg01633.html
> 
> but haven't yet incorporated Jakub's comments.

Yeah, I would not even consider a patch that was count based.  :-)  Ideally, what you want to do is to bin pack the completed in N seconds in B bins, where B is related to the physical number of cores.  The, there is _no_ extra overhead for subdivision on 1 core, and on 10,000 core, it still works, though, one is going to need slightly better 1 to B code.  Anyone know of a bin packer command line argument?  We don't care if it is slow, because we can bin pack every 10th run, and start with idealized times.  I would have contributed that sort of change a while ago, but didn't spot a bin packer.  I also did up code to pull from a single work list, but, dejagnu isn't structured to do that.  :-(  That would be the best solution, but is much more work.

Re: [PATCH] parallelize g++ testing a bit more

[Jakub Jelinek]

On Mon, Jun 20, 2011 at 09:28:56AM -0400, Jason Merrill wrote:
> On 06/17/2011 08:20 PM, Mike Stump wrote:
> >On Jun 17, 2011, at 10:47 AM, Nathan Froyd wrote:
> >>I've done a lot of g++-only testsuite runs lately
> >
> >I think it is reasonable to have even more of them, say, if you have 16 cores and just test c++...  I wonder what the scaling is like as we approach larger N.  :-)
> 
> In my test runs, one of the libstdc++ batches (normal3) takes longer
> than any of the g++ batches, so breaking that up would be more
> effective for me.  :)

Yeah, certainly, libstdc++ needs more parallelization most.
But, as I wrote already to Rainer in Autumn, the methodology
for splitting things up should be on a fast box look at
the time spent in each of the parts as reported by dejagnu
in the log files, and split it to make the jobs roughly even
sized with not overcomplicated patterns.

Here are some numbers from my last x86_64-linux regtest.

From these numbers, I'd say the first parallelization changes
should be split gcc/execute.exp testing from 2 to 4 parallel jobs,
gcc/compile.exp from one to 2, gfortran/dg.exp from 3 to 6 and
libstdc++-v3/conformance.exp from 4 to 8 or 10.
Everything else is much less important.

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gcc/testsuite/objc/objc.log.sep:testcase /usr/src/gcc/gcc/testsuite/objc.dg/torture/dg-torture.exp completed in 11 seconds
gcc/testsuite/objc/objc.log.sep:testcase /usr/src/gcc/gcc/testsuite/objc.dg/torture/strings/strings.exp completed in 35 seconds
gcc/testsuite/objc/objc.log.sep:testcase /usr/src/gcc/gcc/testsuite/objc.dg/torture/tls/tls.exp completed in 12 seconds
gcc/testsuite/objc1/objc.log.sep:testcase /usr/src/gcc/gcc/testsuite/objc.dg/gnu-encoding/gnu-encoding.exp completed in 52 seconds
gcc/testsuite/objc2/objc.log.sep:testcase /usr/src/gcc/gcc/testsuite/objc/execute/execute.exp completed in 225 seconds
gcc/testsuite/objc3/objc.log.sep:testcase /usr/src/gcc/gcc/testsuite/objc/execute/exceptions/exceptions.exp completed in 35 seconds
x86_64-unknown-linux-gnu/libstdc++-v3/testsuite/libstdc++.log.sep:testcase /usr/src/gcc/libstdc++-v3/testsuite/libstdc++-abi/abi.exp completed in 37 seconds
x86_64-unknown-linux-gnu/libstdc++-v3/testsuite/normal0/libstdc++.log.sep:testcase /usr/src/gcc/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp completed in 1284 seconds
x86_64-unknown-linux-gnu/libstdc++-v3/testsuite/normal1/libstdc++.log.sep:testcase /usr/src/gcc/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp completed in 1174 seconds
x86_64-unknown-linux-gnu/libstdc++-v3/testsuite/normal2/libstdc++.log.sep:testcase /usr/src/gcc/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp completed in 1778 seconds
x86_64-unknown-linux-gnu/libstdc++-v3/testsuite/normal3/libstdc++.log.sep:testcase /usr/src/gcc/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp completed in 1516 seconds

	Jakub

[PATCH] parallelize gcc, gfortran and libstdc++ testing some more

[Jakub Jelinek]

On Mon, Jun 20, 2011 at 03:54:59PM +0200, Jakub Jelinek wrote:
> On Mon, Jun 20, 2011 at 09:28:56AM -0400, Jason Merrill wrote:
> > On 06/17/2011 08:20 PM, Mike Stump wrote:
> > >On Jun 17, 2011, at 10:47 AM, Nathan Froyd wrote:
> > >>I've done a lot of g++-only testsuite runs lately
> > >
> > >I think it is reasonable to have even more of them, say, if you have 16 cores and just test c++...  I wonder what the scaling is like as we approach larger N.  :-)
> > 
> > In my test runs, one of the libstdc++ batches (normal3) takes longer
> > than any of the g++ batches, so breaking that up would be more
> > effective for me.  :)
> 
> Yeah, certainly, libstdc++ needs more parallelization most.
> But, as I wrote already to Rainer in Autumn, the methodology
> for splitting things up should be on a fast box look at
> the time spent in each of the parts as reported by dejagnu
> in the log files, and split it to make the jobs roughly even
> sized with not overcomplicated patterns.

So, here is a patch that parallelizes the longest test chunks
on x86_64-linux some more.

libstdc++ testing is now split into 10 jobs, roughly equally sized
(used to be 4), check-gcc testing is now split into 10 jobs too (used to
be 7, but the new division attempts to be more balanced, fastest
job takes for me 8 minutes and longest job takes 11), and check-gfortran
is now run in 7 jobs instead of 4.  This should make these more comparable
e.g. to check-g++ chunks etc.

Regtested on x86_64-linux, verified the merged *.sum files are identical.
Ok for trunk?

2011-06-20  Jakub Jelinek  <jakub@redhat.com>

	* Makefile.in (dg_target_exps): Set.
	(check_gcc_parallelize): Parallelize gcc testing into 10 jobs
	instead of 7, try to divide it more evenly.

	* Make-lang.in (check_gfortran_parallelize): Parallelize dg.exp
	into 6 jobs instead of 3.

	* testsuite/Makefile.am (check_DEJAGNU_normal_targets): Add
	check-DEJAGNUnormal[4-9].
	(check-DEJAGNU): Split into 10 jobs for parallel testing instead of 4.
	* testsuite/Makefile.in: Regenerated.

--- gcc/Makefile.in.jj	2011-06-15 11:54:43.000000000 +0200
+++ gcc/Makefile.in	2011-06-20 19:12:06.593450989 +0200
@@ -501,6 +501,10 @@ xm_include_list=@xm_include_list@
 xm_defines=@xm_defines@
 lang_checks=check-gcc
 lang_checks_parallelized=check-gcc
+dg_target_exps:=alpha.exp,arm.exp,avr.exp,bfin.exp,cris.exp,frv.exp
+dg_target_exps:=$(dg_target_exps),i386.exp,ia64.exp,m68k.exp,microblaze.exp
+dg_target_exps:=$(dg_target_exps),mips.exp,powerpc.exp,rx.exp,s390.exp,sh.exp
+dg_target_exps:=$(dg_target_exps),sparc.exp,spu.exp,xstormy16.exp
 # This lists a couple of test files that take most time during check-gcc.
 # When doing parallelized check-gcc, these can run in parallel with the
 # remaining tests.  Each word in this variable stands for work for one
@@ -514,10 +518,14 @@ lang_checks_parallelized=check-gcc
 # */ prefixed to it in runtest_file_p, it is usually desirable to include
 # a subdirectory name.
 check_gcc_parallelize=execute.exp=execute/2* \
-		      execute.exp=execute/\[013-9a-zA-Z\]* \
-		      compile.exp dg.exp \
-		      dg-torture.exp,builtins.exp \
-		      struct-layout-1.exp,unsorted.exp,stackalign.exp,i386.exp
+		      execute.exp=execute/\[013-9a-fA-F\]* \
+		      execute.exp=execute/\[pP\]*,dg.exp \
+		      execute.exp=execute/\[g-oq-zG-OQ-Z\]*,compile.exp=compile/2* \
+		      compile.exp=compile/\[9pP\]*,builtins.exp \
+		      compile.exp=compile/\[013-8a-oq-zA-OQ-Z\]* \
+		      dg-torture.exp,ieee.exp \
+		      vect.exp,guality.exp,unsorted.exp \
+		      struct-layout-1.exp,stackalign.exp,$(dg_target_exps)
 lang_opt_files=@lang_opt_files@ $(srcdir)/c-family/c.opt $(srcdir)/common.opt
 lang_specs_files=@lang_specs_files@
 lang_tree_files=@lang_tree_files@
--- gcc/fortran/Make-lang.in.jj	2011-05-24 23:59:28.000000000 +0200
+++ gcc/fortran/Make-lang.in	2011-06-20 20:29:29.986808197 +0200
@@ -171,9 +171,12 @@ check-fortran-subtargets : check-gfortra
 lang_checks += check-gfortran
 lang_checks_parallelized += check-gfortran
 # For description see comment above check_gcc_parallelize in gcc/Makefile.in.
-check_gfortran_parallelize = dg.exp=gfortran.dg/\[a-cA-C\]* \
-			     dg.exp=gfortran.dg/\[d-mD-M\]* \
-			     dg.exp=gfortran.dg/\[n-zN-Z0-9\]*
+check_gfortran_parallelize = dg.exp=gfortran.dg/\[adAD\]* \
+			     dg.exp=gfortran.dg/\[bcBC\]* \
+			     dg.exp=gfortran.dg/\[nopNOP\]* \
+			     dg.exp=gfortran.dg/\[isuvISUV\]* \
+			     dg.exp=gfortran.dg/\[efhkqrxzEFHKQRXZ\]* \
+			     dg.exp=gfortran.dg/\[0-9gjlmtwyGJLMTWY\]*
 
 # GFORTRAN documentation.
 GFORTRAN_TEXI = \
--- libstdc++-v3/testsuite/Makefile.am.jj	2011-03-03 10:37:23.000000000 +0100
+++ libstdc++-v3/testsuite/Makefile.am	2011-06-20 18:11:22.734808299 +0200
@@ -100,7 +100,7 @@ new-abi-baseline:
 	@test ! -f $*/site.exp || mv $*/site.exp $*/site.bak
 	@mv $*/site.exp.tmp $*/site.exp
 
-check_DEJAGNU_normal_targets = $(patsubst %,check-DEJAGNUnormal%,0 1 2 3)
+check_DEJAGNU_normal_targets = $(patsubst %,check-DEJAGNUnormal%,0 1 2 3 4 5 6 7 8 9)
 $(check_DEJAGNU_normal_targets): check-DEJAGNUnormal%: normal%/site.exp
 
 # Run the testsuite in normal mode.
@@ -109,22 +109,17 @@ check-DEJAGNU $(check_DEJAGNU_normal_tar
 	RANLIB="$(RANLIB)"; export RANLIB; \
 	if [ -z "$*$(filter-out --target_board=%, $(RUNTESTFLAGS))" ] \
 	    && [ "$(filter -j, $(MFLAGS))" = "-j" ]; then \
-	  $(MAKE) $(AM_MAKEFLAGS) check-DEJAGNUnormal0 check-DEJAGNUnormal1 \
-		  check-DEJAGNUnormal2 check-DEJAGNUnormal3; \
-	  for idx in 0 1 2 3; do \
+	  $(MAKE) $(AM_MAKEFLAGS) $(check_DEJAGNU_normal_targets); \
+	  for idx in 0 1 2 3 4 5 6 7 8 9; do \
 	    mv -f normal$$idx/libstdc++.sum normal$$idx/libstdc++.sum.sep; \
 	    mv -f normal$$idx/libstdc++.log normal$$idx/libstdc++.log.sep; \
 	  done; \
 	  mv -f libstdc++.sum libstdc++.sum.sep; \
 	  mv -f libstdc++.log libstdc++.log.sep; \
 	  $(SHELL) $(srcdir)/../../contrib/dg-extract-results.sh \
-	    libstdc++.sum.sep normal0/libstdc++.sum.sep \
-	    normal1/libstdc++.sum.sep normal2/libstdc++.sum.sep \
-	    normal3/libstdc++.sum.sep > libstdc++.sum; \
+	    libstdc++.sum.sep normal[0-9]/libstdc++.sum.sep > libstdc++.sum; \
 	  $(SHELL) $(srcdir)/../../contrib/dg-extract-results.sh -L \
-	    libstdc++.log.sep normal0/libstdc++.log.sep \
-	    normal1/libstdc++.log.sep normal2/libstdc++.log.sep \
-	    normal3/libstdc++.log.sep > libstdc++.log; \
+	    libstdc++.log.sep normal[0-9]/libstdc++.log.sep > libstdc++.log; \
 	  exit 0; \
 	fi; \
 	srcdir=`$(am__cd) $(srcdir) && pwd`; export srcdir; \
@@ -140,13 +135,25 @@ check-DEJAGNU $(check_DEJAGNU_normal_tar
 			$(RUNTESTFLAGS) abi.exp; \
 	    else echo "WARNING: could not find \`runtest'" 1>&2; :;\
 	    fi; \
-	    dirs="`cd $$srcdir; echo [013-9][0-9]_*/* [ab]* de* [ep]*/*`";; \
+	    dirs="`cd $$srcdir; echo [013-9][0-9]_*/*`";; \
 	  normal1) \
-	    dirs="`cd $$srcdir; echo 2[0-2]_*/*`";; \
+	    dirs="`cd $$srcdir; echo [ab]* de* [ep]*/*`";; \
 	  normal2) \
-	    dirs="`cd $$srcdir; echo 2[4-9]_*/*`";; \
+	    dirs="`cd $$srcdir; echo 2[01]_*/*`";; \
 	  normal3) \
-	    dirs="`cd $$srcdir; echo 23_*/* t*/*`";; \
+	    dirs="`cd $$srcdir; echo 22_*/*`";; \
+	  normal4) \
+	    dirs="`cd $$srcdir; echo 23_*/[a-km-tw-z]*`";; \
+	  normal5) \
+	    dirs="`cd $$srcdir; echo 23_*/[luv]*`";; \
+	  normal6) \
+	    dirs="`cd $$srcdir; echo 2[459]_*/*`";; \
+	  normal7) \
+	    dirs="`cd $$srcdir; echo 2[68]_*/*`";; \
+	  normal8) \
+	    dirs="`cd $$srcdir; echo 27_*/*`";; \
+	  normal9) \
+	    dirs="`cd $$srcdir; echo t*/*`";; \
 	esac; \
 	if [ -n "$*" ]; then cd "$*"; fi; \
 	if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \
--- libstdc++-v3/testsuite/Makefile.in.jj	2011-03-08 11:39:33.199392326 +0100
+++ libstdc++-v3/testsuite/Makefile.in	2011-06-20 18:11:48.176808266 +0200
@@ -287,7 +287,7 @@ lists_of_files = \
 
 extract_symvers = $(glibcxx_builddir)/scripts/extract_symvers
 baseline_subdir := $(shell $(CXX) --print-multi-dir)
-check_DEJAGNU_normal_targets = $(patsubst %,check-DEJAGNUnormal%,0 1 2 3)
+check_DEJAGNU_normal_targets = $(patsubst %,check-DEJAGNUnormal%,0 1 2 3 4 5 6 7 8 9)
 
 # Runs the testsuite, but in compile only mode.
 # Can be used to test sources with non-GNU FE's at various warning
@@ -545,22 +545,17 @@ check-DEJAGNU $(check_DEJAGNU_normal_tar
 	RANLIB="$(RANLIB)"; export RANLIB; \
 	if [ -z "$*$(filter-out --target_board=%, $(RUNTESTFLAGS))" ] \
 	    && [ "$(filter -j, $(MFLAGS))" = "-j" ]; then \
-	  $(MAKE) $(AM_MAKEFLAGS) check-DEJAGNUnormal0 check-DEJAGNUnormal1 \
-		  check-DEJAGNUnormal2 check-DEJAGNUnormal3; \
-	  for idx in 0 1 2 3; do \
+	  $(MAKE) $(AM_MAKEFLAGS) $(check_DEJAGNU_normal_targets); \
+	  for idx in 0 1 2 3 4 5 6 7 8 9; do \
 	    mv -f normal$$idx/libstdc++.sum normal$$idx/libstdc++.sum.sep; \
 	    mv -f normal$$idx/libstdc++.log normal$$idx/libstdc++.log.sep; \
 	  done; \
 	  mv -f libstdc++.sum libstdc++.sum.sep; \
 	  mv -f libstdc++.log libstdc++.log.sep; \
 	  $(SHELL) $(srcdir)/../../contrib/dg-extract-results.sh \
-	    libstdc++.sum.sep normal0/libstdc++.sum.sep \
-	    normal1/libstdc++.sum.sep normal2/libstdc++.sum.sep \
-	    normal3/libstdc++.sum.sep > libstdc++.sum; \
+	    libstdc++.sum.sep normal[0-9]/libstdc++.sum.sep > libstdc++.sum; \
 	  $(SHELL) $(srcdir)/../../contrib/dg-extract-results.sh -L \
-	    libstdc++.log.sep normal0/libstdc++.log.sep \
-	    normal1/libstdc++.log.sep normal2/libstdc++.log.sep \
-	    normal3/libstdc++.log.sep > libstdc++.log; \
+	    libstdc++.log.sep normal[0-9]/libstdc++.log.sep > libstdc++.log; \
 	  exit 0; \
 	fi; \
 	srcdir=`$(am__cd) $(srcdir) && pwd`; export srcdir; \
@@ -576,13 +571,25 @@ check-DEJAGNU $(check_DEJAGNU_normal_tar
 			$(RUNTESTFLAGS) abi.exp; \
 	    else echo "WARNING: could not find \`runtest'" 1>&2; :;\
 	    fi; \
-	    dirs="`cd $$srcdir; echo [013-9][0-9]_*/* [ab]* de* [ep]*/*`";; \
+	    dirs="`cd $$srcdir; echo [013-9][0-9]_*/*`";; \
 	  normal1) \
-	    dirs="`cd $$srcdir; echo 2[0-2]_*/*`";; \
+	    dirs="`cd $$srcdir; echo [ab]* de* [ep]*/*`";; \
 	  normal2) \
-	    dirs="`cd $$srcdir; echo 2[4-9]_*/*`";; \
+	    dirs="`cd $$srcdir; echo 2[01]_*/*`";; \
 	  normal3) \
-	    dirs="`cd $$srcdir; echo 23_*/* t*/*`";; \
+	    dirs="`cd $$srcdir; echo 22_*/*`";; \
+	  normal4) \
+	    dirs="`cd $$srcdir; echo 23_*/[a-km-tw-z]*`";; \
+	  normal5) \
+	    dirs="`cd $$srcdir; echo 23_*/[luv]*`";; \
+	  normal6) \
+	    dirs="`cd $$srcdir; echo 2[459]_*/*`";; \
+	  normal7) \
+	    dirs="`cd $$srcdir; echo 2[68]_*/*`";; \
+	  normal8) \
+	    dirs="`cd $$srcdir; echo 27_*/*`";; \
+	  normal9) \
+	    dirs="`cd $$srcdir; echo t*/*`";; \
 	esac; \
 	if [ -n "$*" ]; then cd "$*"; fi; \
 	if $(SHELL) -c "$$runtest --version" > /dev/null 2>&1; then \


	Jakub

Re: [PATCH] parallelize gcc, gfortran and libstdc++ testing some more

[Jason Merrill]

OK.

Jason

Re: [PATCH] parallelize gcc, gfortran and libstdc++ testing some more

[Jeff Law]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 06/20/11 15:04, Jakub Jelinek wrote:
> On Mon, Jun 20, 2011 at 03:54:59PM +0200, Jakub Jelinek wrote:
>> On Mon, Jun 20, 2011 at 09:28:56AM -0400, Jason Merrill wrote:
>>> On 06/17/2011 08:20 PM, Mike Stump wrote:
>>>> On Jun 17, 2011, at 10:47 AM, Nathan Froyd wrote:
>>>>> I've done a lot of g++-only testsuite runs lately
>>>>
>>>> I think it is reasonable to have even more of them, say, if you have 16 cores and just test c++...  I wonder what the scaling is like as we approach larger N.  :-)
>>>
>>> In my test runs, one of the libstdc++ batches (normal3) takes longer
>>> than any of the g++ batches, so breaking that up would be more
>>> effective for me.  :)
>>
>> Yeah, certainly, libstdc++ needs more parallelization most.
>> But, as I wrote already to Rainer in Autumn, the methodology
>> for splitting things up should be on a fast box look at
>> the time spent in each of the parts as reported by dejagnu
>> in the log files, and split it to make the jobs roughly even
>> sized with not overcomplicated patterns.
> 
> So, here is a patch that parallelizes the longest test chunks
> on x86_64-linux some more.
> 
> libstdc++ testing is now split into 10 jobs, roughly equally sized
> (used to be 4), check-gcc testing is now split into 10 jobs too (used to
> be 7, but the new division attempts to be more balanced, fastest
> job takes for me 8 minutes and longest job takes 11), and check-gfortran
> is now run in 7 jobs instead of 4.  This should make these more comparable
> e.g. to check-g++ chunks etc.
> 
> Regtested on x86_64-linux, verified the merged *.sum files are identical.
> Ok for trunk?
> 
> 2011-06-20  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* Makefile.in (dg_target_exps): Set.
> 	(check_gcc_parallelize): Parallelize gcc testing into 10 jobs
> 	instead of 7, try to divide it more evenly.
> 
> 	* Make-lang.in (check_gfortran_parallelize): Parallelize dg.exp
> 	into 6 jobs instead of 3.
> 
> 	* testsuite/Makefile.am (check_DEJAGNU_normal_targets): Add
> 	check-DEJAGNUnormal[4-9].
> 	(check-DEJAGNU): Split into 10 jobs for parallel testing instead of 4.
> 	* testsuite/Makefile.in: Regenerated.
OK.
jeff
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