Trac August 2012

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[Einstein Toolkit] #928: openmp parallelization within Exact broken
by Einstein Toolkit 13 Oct '12

13 Oct '12

#928: openmp parallelization within Exact broken --------------------+------------------------------------------------------- Reporter: knarf | Owner: Type: defect | Status: new Priority: major | Milestone: ET_2012_05 Component: Other | Version: Keywords: | --------------------+------------------------------------------------------- Exact uses openmp for the loop over grid points. However, quite a few metrics (which get called pointwise) use static (saved) data. In all cases I have looked at this is only used to initialize some local variables with values from Cactus parameters - and only as long as a 'global' variable 'firstcall' is true. This variable is set to 'false' after the other variables had been initialized, which should be ok even when using multiple threads. However, the compiler can switch the two (and does according to the assembly output), leading to another thread 'seeing' first_call being false, but the global variables not being initialized yet. The right solution would be to remove these variables. They are not really necessary, because the Cactus parameters could directly be used. However, that patch would be quite large. A simple and quick workaround would be to remove the openmp parallelization for that loop, at least for the upcoming release. We have to do one of the two - or something else in case someone comes up with another idea. This is currently breaking several testsuites (sometimes). In case you want to see an example: look at de_Sitter.F77 and firstcall and arad. Thoughts? -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/928> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #902: carpetioascii with compact_format writes wrong set of columns
by Einstein Toolkit 11 Oct '12

11 Oct '12

#902: carpetioascii with compact_format writes wrong set of columns ---------------------------+------------------------------------------------ Reporter: rhaas | Owner: eschnett Type: defect | Status: new Priority: minor | Milestone: Component: Carpet | Version: Keywords: carpetioascii | ---------------------------+------------------------------------------------ For 0d output (in my case systemstatistics data) I get: {{{ # SYSTEMSTATISTICS::PROCESS_MEMORY_MB (systemstatistics::process_memory_mb) # # column format: 1:it 2:ix 3:time 4:x 5:data # data columns: 5:maxrss_mb 6:majflt_mb 7:arena_mb 8:ordblks_mb 9:hblks_mb 10:hblkhd_mb 11:uordblks_mb 12:fordblks_mb 13:keepcost_mb 14:swap_used_mb 3840 0 5.76 4956 23 628 0 0 651 -1189 1818 17 0 4096 0 6.144 5100 23 726 0 0 651 -1188 1915 21 0 }}} Note that the headers claim 14 columns but counting them, there are only 13 columns. From the look of it the "x" column is absent (since 4956 makes sense for being MB of memory used and 5.76 is clearly the time) -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/902> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #946: Undefined symbol ___emutls_get_address
by Einstein Toolkit 09 Oct '12

09 Oct '12

#946: Undefined symbol ___emutls_get_address ------------------------+--------------------------------------------------- Reporter: hinder | Owner: eschnett Type: defect | Status: new Priority: major | Milestone: Component: SimFactory | Version: Keywords: | ------------------------+--------------------------------------------------- When I try to compile on Mac OS using the SimFactory optionlist macos- fink-gcc.cfg (https://svn.cct.lsu.edu/repos/numrel/simfactory2/trunk/mdb/optionlists /macos-fink-gcc.cfg), I get the following error at link time: {{{ ld: warning: alignment lost in merging tentative definition _tmunubaserest_ ld: warning: alignment lost in merging tentative definition _admmacrosrest_ ld: warning: alignment lost in merging tentative definition _staticconformalrest_ Undefined symbols: "___emutls_get_address", referenced from: __ZN4dist25collect_total_num_threadsEv.omp_fn.0 in libthorn_CarpetLib.a(dist.cc.o) dist::collect_total_num_threads() in libthorn_CarpetLib.a(dist.cc.o) Carpet::SetupGH(tFleshConfig*, int, _cGH*) in libthorn_Carpet.a(SetupGH.cc.o) ld: symbol(s) not found collect2: ld returned 1 exit status make[1]: *** [/Users/ian/Cactus/Kerrness/exe/cactus_sim] Error 1 make: *** [sim] Error 2 }}} I don't know if the "alignment lost" warnings are related to the fatal error. This seems to be some issue related to OpenMP. The problem appeared fairly recently, as I have been able to compile older versions of the ET with no problem, and this option list has not been changed. I am reporting this against SimFactory because the problem does not happen with other option lists in the machine database, but I suspect that the issue arose due to a change in Carpet (maybe related to affinity?). From some Google searching, this symbol is part of GCC's thread-local storage emulation for Mac OS. Some people have had this problem when mixing object files compiled by different versions of GCC. I am using GCC 4.4.4 from Fink: {{{ > g++-4 --version g++-4 (GCC) 4.4.4 }}} This page, http://stackoverflow.com/questions/7885246/what-is-the-emutls- get-address-symbol, says {{{ Using thread local storage (e.g. OpenMP ThreadPrivate variables) on Darwin requires manually linking to TLS emutls, via either -lgcc_s.so.1 or -lgcc_eh }}} There is also a suggestion to upgrade the version of GCC, which I am trying now. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/946> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1054: Formaline can enter into an infinite loop if git-lock.pl cannot create its lock directory
by Einstein Toolkit 09 Oct '12

09 Oct '12

#1054: Formaline can enter into an infinite loop if git-lock.pl cannot create its lock directory -------------------+-------------------------------------------------------- Reporter: rhaas | Type: defect Status: new | Priority: minor Milestone: | Component: EinsteinToolkit thorn Version: | Keywords: Formaline -------------------+-------------------------------------------------------- if for some reason the source base directory returned by git-get- localdir.pl is not accessible (eg. since one has uses an invalid or empty (simfactory) defs.local.ini) then the loop in line 35 of git-lock.pl: {{{ 32 my $waittime = 0.01; 33 my $maxwaittime = 10; 34 print "Attempting to obtain $lockdir cwd = ".getcwd()." GIT_DIR=$git_dir\n"; 35 while (! (mkdir $lockdir)) { 36 # Wait some time 37 my $unit = $waittime==1 ? "second" : "seconds"; 38 print "Git repository is busy; waiting $waittime $unit...\n"; 39 system "sleep '$waittime'"; 40 # Back off exponentially 41 $waittime *= 2; 42 $waittime = 1 if $waittime>1 && $waittime<2; 43 $waittime = $maxwaittime if $waittime > $maxwaittime; 44 } }}} never quits and without SILENT=no the make system also does not output the "Git repository busy" messages it seems. Possible remedies would seem to either introduce a timeout after which Formaline gives up and does not push into the source code repository (with a loud warning at the end) or to ensure that the print statement's output appears on screen. It might also be useful to add an option to Formaline to not rely on simfactory. Right now without simfactory it will fail at some later point in the build process (since it cannot call simfactory/bin/sim whoami) or might use the wrong local source path (if simfactory is downloaded but not properly set up). -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1054> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #720: check at runtime that all REQUIREd and OPTIONAL thorns and capabilities are active
by Einstein Toolkit 19 Sep '12

19 Sep '12

#720: check at runtime that all REQUIREd and OPTIONAL thorns and capabilities are active -------------------------+-------------------------------------------------- Reporter: rhaas | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Cactus | Version: Keywords: | -------------------------+-------------------------------------------------- This is an offshot of a discussion on the Cactus developers mailing list: http://cactuscode.org/pipermail/developers/2011-November/006258.html On 6 Jan 2012 12:54:13 -0500 eschnett said: > What is currently missing is the mechanism that checks that all thorns > providing required capabilities are activated. If they are not, code > in inactive thorns is called -- this is fine as long as no Cactus > infrastructure is used (parameters, scheduled routines, grid > functions, etc.). > > Yes, we should implement the respective checks; yes, we should > automatically activate thorns required for capabilities (and maybe > some others as well?); yes, we should then output this thorn list to > the screen (done anyway) and into a file. > > By the way, Cactus already determines which thorns need to be > activated automatically as a service to the user in the error message > that complains about missing thorns. The idea seems to be to document all thorns whose code is executed in the parameter file. Ian's original need might be served by an "OPTIONAL" statement in configuration.ccl (http://einsteintoolkit.org/documentation/UsersGuide/UsersGuidech12.html#x17…) and some #ifdefs, maybe. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/720> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #929: GRHydro_test_tov_ppm_ML fails intermittently
by Einstein Toolkit 19 Sep '12

19 Sep '12

#929: GRHydro_test_tov_ppm_ML fails intermittently -----------------------------------+---------------------------------------- Reporter: hinder | Owner: Type: defect | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: GRHydro | -----------------------------------+---------------------------------------- The test GRHydro_test_tov_ppm_ML sometimes fails on Datura. This seems to be nondeterministic. The most recent occurrence of this (http://git.barrywardell.net/EinsteinToolkitTestResults.git/blob/0fed62edfcc…) is due to differences in the constraints and vel[0]_norm1.xg very close to the tolerance. This does not happen every time. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/929> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #988: testsuite can't find MPI when CACTUS_CONFIGS_DIR is set
by Einstein Toolkit 19 Sep '12

19 Sep '12

#988: testsuite can't find MPI when CACTUS_CONFIGS_DIR is set ---------------------+------------------------------------------------------ Reporter: sbrandt | Owner: Type: defect | Status: new Priority: minor | Milestone: Cactus_4.1.0 Component: Cactus | Version: development version Keywords: | ---------------------+------------------------------------------------------ testsuite can't find MPI when CACTUS_CONFIGS_DIR is set, a patch correcting this problem is attached -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/988> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1037: Update Fortran API for CCTK_LOOP macros
by Einstein Toolkit 19 Sep '12

19 Sep '12

#1037: Update Fortran API for CCTK_LOOP macros ----------------------+----------------------------------------------------- Reporter: eschnett | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: Cactus | Version: Keywords: | ----------------------+----------------------------------------------------- The enclosed patch updates the Fortran API to be equivalent to the C API. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1037> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1052: use grid::x, x, y in CarpetIOASCII for x, y, z columns
by Einstein Toolkit 18 Sep '12

18 Sep '12

#1052: use grid::x,x,y in CarpetIOASCII for x,y,z columns -------------------------+-------------------------------------------------- Reporter: rhaas | Owner: eschnett Type: enhancement | Status: new Priority: minor | Milestone: Component: Carpet | Version: Keywords: | -------------------------+-------------------------------------------------- right now CarpetIOASCII computes the "local" coordinates from the lower boundary coordinate of each patch and CCTK_DELTA_SPACE. This does not work (as expected) for multipatch. It would be good to add an option to use grid::x etc instead. Ideally as both a parameter and an option in the '{}' to choose at runtime and per variable what to do (eg. to keep the r coordinate around for spherical patches). -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1052> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #762: support git-svn repositories
by Einstein Toolkit 17 Sep '12

17 Sep '12

#762: support git-svn repositories ---------------------------+------------------------------------------------ Reporter: rhaas | Owner: eric9 Type: enhancement | Status: new Priority: optional | Milestone: Component: GetComponents | Version: Keywords: | ---------------------------+------------------------------------------------ I have a number of svn repositories that are each wrapped within a git-svn checkout (to more easily handle local modifications). It would be nice to have GetComponents handle these for me in the same way it already handles svn and git repositories. With git-svn checkouts are {{{git svn clone URL DIR}}}, updates are {{{git svn rebase}}}, diff is {{{git diff remotes/git-svn}}} and local changes have to be stashed the way they are with git. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/762> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac August 2012