Bugs item #1692649, was opened at 2007-04-01 23:51 Message generated for change (Settings changed) made by eighthave You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478070&aid=1692649&group_id=55736
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: pd-extended Group: v0.39.2 >Status: Closed Resolution: Postponed Priority: 5 Private: No Submitted By: Hans-Christoph Steiner (eighthave) >Assigned to: Nobody/Anonymous (nobody) Summary: sqrt~ giving only -inf/inf Initial Comment: For the G4 and Intel optimized builds of Pd-0.39.2-extended-test7 on Mac OS X, sqrt~ only returns -inf or inf. (Does this affect other platforms?) This is probably related to the auto-vectorization. This is not a problem on Pd-0.39.2-extended-test7 that was built for G3s. Check the sqrt~-help.pd file for a test patch. sqrt~ of the signal 9 returns -\infty, hence not 3 as expected. All tried int signals greater then zero returns -\infty. To test this, see either the attached patch (which is very close to the help-patch for [sqrt~]) or the help-patch for [sqrt~]. See also: http://lists.puredata.info/pipermail/pd-list/2007-01/046266.html ---------------------------------------------------------------------- Comment By: stffn (stffn) Date: 2007-06-16 06:14 Message: Logged In: YES user_id=1658640 Originator: NO Same thing for RC3. ---------------------------------------------------------------------- Comment By: stffn (stffn) Date: 2007-06-12 08:18 Message: Logged In: YES user_id=1658640 Originator: NO In the autobuild from 12th of june it now works on mac-intel (macbook core duo), but - sadly - not on powerpc (ibook G4). Both running Mac OS 10.4.9. ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2007-06-12 00:26 Message: Logged In: YES user_id=27104 Originator: YES I removed these from the compiler flags and it seems to have fixed the problem on Intel Macs: -ftree-vectorize -ftree-vectorizer-verbose=2 Please confirm that this is fixed in both Intel and PowerPC. This thread discusses the root causes of why the auto-vectorization causes this problem: http://lists.puredata.info/pipermail/pd-dev/2007-04/008689.html Ideally the root of the problem would be fixed so that we can use auto-vectorization. ---------------------------------------------------------------------- Comment By: stffn (stffn) Date: 2007-05-05 09:11 Message: Logged In: YES user_id=1658640 Originator: NO Still present in the nightly build of RC2 from 5th of May. It does however work in the test build of .040.2-extended of the same date. ---------------------------------------------------------------------- Comment By: frey (freynz) Date: 2007-04-18 08:06 Message: Logged In: YES user_id=1772500 Originator: NO I have this same problem with pd-0.39.2-extended-rc2 on my Intel MacBook. It doesn't appear in Miller's vanilla pd-0.40-2, on the same machine. ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2007-04-02 00:08 Message: Logged In: YES user_id=27104 Originator: YES d_math.c, where sqrt.c isn't auto-vectorized, so this is probably caused by a different optimization flag. Or maybe it's related to these warnings: d_math.c: In function 'init_rsqrt': d_math.c:79: warning: dereferencing type-punned pointer will break strict-aliasing rules d_math.c: In function 'q8_rsqrt': d_math.c:93: warning: dereferencing type-punned pointer will break strict-aliasing rules d_math.c: In function 'q8_sqrt': d_math.c:101: warning: dereferencing type-punned pointer will break strict-aliasing rules ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478070&aid=1692649&group_id=55736 _______________________________________________ PD-dev mailing list [email protected] http://lists.puredata.info/listinfo/pd-dev
