Greetings, I think getting the parallel processing working is important. It may be that for various reasons the speedup in general cases is minimal and not worth the effort. However, I'd imagine that there are particular use-cases utilizing large arrays where the speedup would be substantial. That is when those types of enhancements would make APL a real benefit.
Thanks. Blake On Wed, Oct 16, 2019 at 5:27 AM Dr. Jürgen Sauermann < mail@jürgen-sauermann.de> wrote: > Hi Rowan, > > fixed in *SVN 1191*. > > You should not be too enthusiastic, though, because the speed-ups that > can be achieved are somewhat disappointing. And due to that, I > haven't put too much effort into fixing faults (sometimes apl hangs > on a semaphore when parallel execution is enabled). > > Best Regards, > Jürgen Sauermann > > > On 10/16/19 5:15 AM, Rowan Cannaday wrote: > > Hello, > > intrigued by the ability to parallelize APL, thought I'd try to test it: > > `apl --cfg` followed by a line of '=' signs followed by `apl -q`: > > > configurable options: > --------------------- > ASSERT_LEVEL_WANTED=2 > SECURITY_LEVEL_WANTED=0 (default) > APSERVER_PATH=/tmp/GNU-APL/APserver (default) > APSERVER_PORT=16366 (default) > APSERVER_TRANSPORT=0 (default) > CORE_COUNT_WANTED=2 > DYNAMIC_LOG_WANTED=yes > MAX_RANK_WANTED=8 (default) > RATIONAL_NUMBERS_WANTED=yes > SHORT_VALUE_LENGTH_WANTED=12, therefore: > sizeof(Value) : 456 bytes > sizeof(Cell) : 24 bytes > sizeof(Value header): 168 bytes > > VALUE_CHECK_WANTED=yes > VALUE_HISTORY_WANTED=yes > VF_TRACING_WANTED=no (default) > VISIBLE_MARKERS_WANTED=yes > > how ./configure was (probably) called: > -------------------------------------- > ./configure 'CORE_COUNT_WANTED=2' 'DEVELOP_WANTED=yes' > 'VALUE_HISTORY_WANTED=yes' 'VISIBLE_MARKERS_WANTED=yes' > '--enable-maintainer-mode' > > BUILDTAG: > --------- > Project: GNU APL > Version / SVN: 1.8 / 1190M > Build Date: 2019-10-16 02:45:24 UTC > Build OS: Linux 5.2.0-3-amd64 x86_64 > config.status: 'CORE_COUNT_WANTED=2' 'DEVELOP_WANTED=yes' > 'VALUE_HISTORY_WANTED=yes' 'VISIBLE_MARKERS_WANTED=yes' > '--enable-maintainer-mode' > Archive SVN: 1161 > > > ================================================================================ > > $ apl -q > > > ==================================================== > SEGMENTATION FAULT > thread: 0x7f6078042e00 > thread_contexts_count: 2 > busy_worker_count: 0 > active_core_count: 1 > thread # 0: 0 RUN job: 0 no-name > thread #-1: 0 RUN job: 0 no-name > > > ---------------------------------------- > -- Stack trace at main.cc:88 > ---------------------------------------- > 0x7F6078FD1BBB __libc_start_main > 0x5631406C386D main > 0x5631406CAD8D init_apl(int, char const**) > 0x5631407E881B Parallel::init(bool) > 0x563140832E2D Thread_context::init_parallel(CoreCount, bool) > 0x7F60794E5B18 sem_init > 0x7F60794E8510 > 0x5631406CA95A > ======================================== > ==================================================== > > > >
