signal 9 making example results for "projectivePoints" on riscv64

[d-torrance]

From builds of the 1.17.1 package for Debian unstable and Ubuntu 21.04 for riscv64:

 -- making example results for "projectivePoints"                           
 ulimit -c unlimited; ulimit -t 700; ulimit -m 850000; ulimit -s 8192; ulimit -n 512;  cd /tmp/M2-2429242-0/2-rundir/; GC_MAXIMUM_HEAP_SIZE=400M "/<<PKGBUILDDIR>>/M2/usr-dist/riscv64-Linux-Debian-unstable/bin/M2-binary" -q --int --no-randomize --no-readline --silent --stop --print-width 129 -e 'needsPackage("Points",Reload=>true,FileName=>"/<<PKGBUILDDIR>>/M2/Macaulay2/packages/Points.m2")' <"/tmp/M2-2429242-0/0_projective__Points.m2" >>"/<<PKGBUILDDIR>>/M2/usr-dist/common/share/doc/Macaulay2/Points/example-output/_projective__Points.errors" 2>&1
/<<PKGBUILDDIR>>/M2/usr-dist/common/share/doc/Macaulay2/Points/example-output/_projective__Points.errors:0:1: (output file) error: Macaulay2 killed by signal 9
/tmp/M2-2429242-0/0_projective__Points.m2:0:1: (input file)
M2: *** Error 9

...

../../m2/debugging.m2:20:6:(1):[9]: error: installPackage: 1 error(s) occurred running examples for package Points:

_projective__Points.errors
**************************
     3 2 7 3 9 0 4 8 4 1 1 6 8 4 4 5 5 0 1 8 8 4 9 6 8 0 9 |

              6        150
o7 : Matrix ZZ  <--- ZZ

i8 : elapsedTime (inG,G) = projectivePoints(M,R);
 -- 97.0698 seconds elapsed

i9 : elapsedTime H = projectivePointsByIntersection(M,R);
Killed

../../m2/installPackage.m2:696:14:(1):[8]: --back trace--
../../m2/methods.m2:119:80:(1):[7]: --back trace--
../../m2/option.m2:16:8:(1):[6]: --back trace--
../../m2/installPackage.m2:580:5:(1):[5]: --back trace--
../../m2/methods.m2:119:80:(1):[4]: --back trace--
../../m2/option.m2:16:8:(1):[3]: --back trace--
currentString:1:1:(3):[2]: --back trace--
Macaulay2/Core/startup.m2.in:561:33:(0):[1]: --back trace--
Macaulay2/Core/startup.m2.in:672:6:(0): --back trace--
make[3]: *** [Makefile:93: /<<PKGBUILDDIR>>/M2/usr-dist/riscv64-Linux-Debian-unstable/lib/riscv64-linux-gnu/Macaulay2/Points/.installed] Error 1

[d-torrance]

This also just happened during the mipsel build.

[d-torrance]

This example is probably too big, anyway. Even on my halfway decent amd64 system, it takes about a minute to run. From a bunch of build logs:

grep --color -nH --null -e "making example results for \"projectivePoints\"" ~/pbuilder/sid_result/*.build
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git1011.f2f4e60+ds-1_amd64.build\022535: -- making example results for "projectivePoints"                            -- 54.7892 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git1054.cbd7cca+ds-1_amd64.build\022597: -- making example results for "projectivePoints"                            -- 54.3443 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git1102.2d48ff6+ds-1_amd64.build\022685: -- making example results for "projectivePoints"                            -- 56.8461 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git1111.c9b654a+ds-1_amd64.build\022685: -- making example results for "projectivePoints"                            -- 61.5203 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git802.e091f52+ds-1_amd64.build\021176: -- making example results for "projectivePoints"                            -- 60.7752 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git806.a01d953+ds-1_amd64.build\021122: -- making example results for "projectivePoints"                            -- 62.4953 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git815.1b4bbe4+ds-1_amd64.build\022525: -- making example results for "projectivePoints"                            -- 56.1011 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.0.2+git822.37eca0b+ds-1_amd64.build\022527: -- making example results for "projectivePoints"                            -- 54.5067 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.99+git49.cfeee01+ds-1_amd64.build\022685: -- making example results for "projectivePoints"                            -- 57.6835 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.16.99+git77.4077f1b+ds-1_amd64.build\022720: -- making example results for "projectivePoints"                            -- 57.6492 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17.0.1+git100.b2c27ca+ds-1_amd64.build\022702: -- making example results for "projectivePoints"                            -- 54.2799 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17.0.1+git110.73d0edb+ds-1_amd64.build\022706: -- making example results for "projectivePoints"                            -- 58.3262 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17.0.1+git132.f0da8e8+ds-1_amd64.build\022704: -- making example results for "projectivePoints"                            -- 54.8146 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17.0.1+git160.88a6bdc+ds-1_amd64.build\022715: -- making example results for "projectivePoints"                            -- 54.491 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17.0.1+git179.85f5395+ds-1_amd64.build\022701: -- making example results for "projectivePoints"                            -- 53.1656 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17+ds-1_amd64.build\022695: -- making example results for "projectivePoints"                            -- 53.9007 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17+git186.fd73e6e+ds-1_amd64.build\022756: -- making example results for "projectivePoints"                            -- 55.4822 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17+git34.f65658b+ds-1_amd64.build\022713: -- making example results for "projectivePoints"                            -- 53.7796 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17+git57.2feb8cc+ds-1_amd64.build\022683: -- making example results for "projectivePoints"                            -- 54.2415 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17+git63.160fd88+ds-1_amd64.build\022682: -- making example results for "projectivePoints"                            -- 54.4994 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17+git83.66187c9+ds-1_amd64.build\022682: -- making example results for "projectivePoints"                            -- 59.3988 seconds elapsed
/home/profzoom/pbuilder/sid_result/macaulay2_1.17+git90.db9d844+ds-1_amd64.build\022682: -- making example results for "projectivePoints"                            -- 56.7564 seconds elapsed

[d-torrance]

Ah, but apparently, that's the point:

i6 : help projectivePoints

o6 = projectivePoints -- produces the ideal and initial ideal from the coordinates of a finite set of projective points
     ******************************************************************************************************************

...

     This algorithm may be faster than computing the intersection of the ideals
     of each projective point.

...

     +---------------------------------------------------------------------------------------------------------------------------------+
     |i8 : elapsedTime (inG,G) = projectivePoints(M,R);                                                                                |
     | -- 6.04181 seconds elapsed                                                                                                      |
     +---------------------------------------------------------------------------------------------------------------------------------+
     |i9 : elapsedTime H = projectivePointsByIntersection(M,R);                                                                        |
     | -- 80.9046 seconds elapsed                                                                                                      |
     +---------------------------------------------------------------------------------------------------------------------------------+

[DanGrayson]

81 seconds is too long -- examples in documentation should be simple. (And the output needn't include timings.)

[d-torrance]

This also caused the mips64el build to fail.