The version from the sage-on-gentoo overlay has been hacked to explicitly write data generated by the user in ~/.sympow. If indeed you make a system wide install where the user cannot write it will certainly fail. I don’t remember if I or Christopher did the hack or if we lifted it from a debian package.
Note that one of the optional gap package is in the same situation and that one I am not sure I can fix (atlasrep) the only thing is for the user to install it privately instead of using a system wide install (gap apparently looks for packages in ~/.gap). François > On 8/06/2016, at 02:41, mmarco <mma...@unizar.es> wrote: > > It also works for me on two different gentoo boxes. Both compiling locally > from source and in a system wide sage-on-gentoo install. > > El martes, 7 de junio de 2016, 16:28:34 (UTC+2), John H Palmieri escribió: > > > On Tuesday, June 7, 2016 at 7:11:08 AM UTC-7, William wrote: > Hi, > > Long ago in 2006, I put Mark Watkins amazing C program "sympow" in Sage: > > > http://doc.sagemath.org/html/en/reference/lfunctions/sage/lfunctions/sympow.html > > > In case you're not a number theorist, this program computes values of > generating functions > attached to symmetric power representations attached to elliptic > curves, and I think it's the only open source > program that does it. Symmetric power representations turn out to be > extremely important in number > theory, e.g., they are used to prove the Sato-Tate conjecture, which > is a major result. > > The documentation cited above begins > > sage: sympow('-new_data 2') # not tested > > So.. it's not tested, and with Sage, as we all know, "if it isn't > tested, then it's completely horribly broken". > > I just tried to use Sympow, since it would be extremely useful for > some research I'm doing with Barry > Mazur during my visit to Harvard this week. However, it just > segfaults in both sage-6.10 **and** sage-7.3.beta. > It silently fails when doing the above "not tested" thing, but if you > try it at the command line it segfaults: > > ----- > (sage-sh) 95d92fa7cb50414ea35d9897eabe44de@compute4-us:sympow$ sympow > -new_data 2 > Make data for symmetric power 2 > Running the new_data script for -sp 2 > Making the datafiles for -sp 2 > > Rewarping the param_data file > Left with 13 entries in param_data > Segmentation fault (core dumped) > ----- > > It works for me on OS X, both within Sage and from the command line: > > ┌────────────────────────────────────────────────────────────────────┐ > │ SageMath version 7.3.beta2, Release Date: 2016-05-28 │ > │ Type "notebook()" for the browser-based notebook interface. │ > │ Type "help()" for help. │ > └────────────────────────────────────────────────────────────────────┘ > ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ > ┃ Warning: this is a prerelease version, and it may be unstable. ┃ > ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛ > sage: sympow('-new_data 2') > 'Running the new_data script for -sp 2\nMaking the datafiles for -sp > 2\n\nRewarping the param_data file\nLeft with 13 entries in param_data\necho > \'Removing any old data files\'\ncd datafiles\nrm -f P02HM.txt P02HS.txt > P02HM.bin\nrm -f P02LM.txt P02LS.txt P02LM.bin\ncd ..\nRemoving any old data > files\nRunning the gp script\n\nN=600; dv=0; mx=1;\n\\p 250\nSTR="P02H";\n\\r > standard1.gp\nF(k)=if(k%2==0,J(k-2,X)/1!*J(k/2-1,X/2)*sinv(k,X),sqrt(Pi)/2*J(k-1,X)/0!*J(k-2,X)/1!*1/J((k-1)/2,X/2)*two1ms(k,X)*sinv(k,X))\n\\r > standard2.gp\n\\l datafiles/P02HM.txt\n\\r standard3.gp\n\\l > datafiles/P02HS.txt\ncoeffs(0);\ncoeffE(1);\nSTR="P02L";\n\\r > standard1.gp\nF(k)=if(k%2==1,J(k-1,X)/1!*J((k-1)/2,X/2)*sinv(k,X),sqrt(Pi)/2*J(k-1,X)/1!*J(k-1,X)/J(k/2-1,X/2)*two1ms(k,X)*sinv(k,X))\n\\r > standard2.gp\n\\l datafiles/P02LM.txt\n\\r standard3.gp\n\\l > datafiles/P02LS.txt\ncoeffs(0);\ncoeffO(1);\n\\q\n\necho \'Trimming the data > files\'\ncd datafiles\ngrep -v \'^?\' P02HM.txt | sed \'s/ E/e/\' > > .tempfile.123\\\n && echo \'END\' >> .tempfile.123 && mv .tempfile.123 > P02HM.txt\ngrep -v \'^?\' P02HS.txt | sed \'s/ E/e/\' > .tempfile.123\\\n && > echo \'END\' >> .tempfile.123 && mv .tempfile.123 P02HS.txt\ngrep -v \'^?\' > P02LM.txt | sed \'s/ E/e/\' > .tempfile.123\\\n && echo \'END\' >> > .tempfile.123 && mv .tempfile.123 P02LM.txt\ngrep -v \'^?\' P02LS.txt | sed > \'s/ E/e/\' > .tempfile.123\\\n && echo \'END\' >> .tempfile.123 && mv > .tempfile.123 P02LS.txt\necho \'Turning the meshes into binaries\'\nNUM=`grep > -c AT P02HM.txt`\n../sympow -txt2bin $NUM P02HM.bin < P02HM.txt\nNUM=`grep -c > AT P02LM.txt`\n../sympow -txt2bin $NUM P02LM.bin < P02LM.txt\ncd ..\nTrimming > the data files\nTurning the meshes into binaries\nRewarping the param_data > file\nLeft with 15 entries in param_data\nFinished with -sp 2' > > (At least, it doesn't segfault or fail silently. I don't know what it's > supposed to return.) > > Does the installation log file for sympow say anything interesting? > > -- > John > > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
