I think I downloaded the binaries. Thanks for your suggestions. I will try it.
在 2016年5月11日星期三 UTC+3下午6:14:37，Dima Pasechnik写道： > > Have you built Sage from source? If not, it could happen, in principle, > that lapack/atlas/blas shipped > do not quite work on your system... > > If you built it from source, did you do anything special to build Atlas in > particular? > > You can also try building csdp completely separately from Sage, using > Ubuntu system-supplied > libraries, and see whether theta works. > Namely, you can clone it from https://github.com/dimpase/csdp > and build as described on that page. > > Sorry for not being able to help more, but as long we cannot reproduce > the error, it's hard to tell what exactly is wrong. > > And of course you can use gdb to debug theta - for this you need to make > sure it's compiled with right switches, of course... > > > > On Wednesday, May 11, 2016 at 2:50:30 PM UTC+1, Sihuang Hu wrote: >> >> Yes, it still works on many other graphs. >> >> --------------------------------------------------------------------------------------------------------------------------- >> (sage-sh) shhu@shhu-ee-tau:~$ ldd `which theta` >> linux-vdso.so.1 => (0x00007ffea69d6000) >> libsdp.so.0 => /home/shhu/Documents/SageMath/local/lib/libsdp.so.0 >> (0x00007f9e721e9000) >> liblapack.so.3 => >> /home/shhu/Documents/SageMath/local/lib/liblapack.so.3 (0x00007f9e71907000) >> libcblas.so.3 => >> /home/shhu/Documents/SageMath/local/lib/libcblas.so.3 (0x00007f9e716e3000) >> libf77blas.so.3 => >> /home/shhu/Documents/SageMath/local/lib/libf77blas.so.3 (0x00007f9e714c2000) >> libatlas.so.3 => >> /home/shhu/Documents/SageMath/local/lib/libatlas.so.3 (0x00007f9e70e91000) >> libgfortran.so.3 => >> /home/shhu/Documents/SageMath/local/lib/libgfortran.so.3 >> (0x00007f9e70b73000) >> libquadmath.so.0 => >> /home/shhu/Documents/SageMath/local/lib/libquadmath.so.0 >> (0x00007f9e70936000) >> libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f9e70615000) >> libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9e7024f000) >> libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 >> (0x00007f9e70031000) >> libgcc_s.so.1 => >> /home/shhu/Documents/SageMath/local/lib/libgcc_s.so.1 (0x00007f9e6fe1b000) >> /lib64/ld-linux-x86-64.so.2 (0x00005609d1eac000) >> >> ------------------------------------------------------------------------------------------------------------------------------ >> The CSDP log is attached. >> >> Thanks for your kindly help! >> >> 在 2016年5月11日星期三 UTC+3下午4:43:04，Dima Pasechnik写道： >>> >>> It does work on some graphs, still, right? >>> It's a high-end relatively new CPU, perhaps Atlas and/or gcc has a >>> problem with it? >>> >>> Can you post the output of 'ldd theta', i.e. >>> >>> (sage-sh) dimpase@clpc171:sage$ ldd `which theta` >>> linux-vdso.so.1 (0x00007ffd2c34f000) >>> libsdp.so.0 => /home/scratch/dimpase/sage/sage/local/lib/libsdp.so.0 >>> (0x00007f74f6ec3000) >>> liblapack.so.3 => >>> /home/scratch/dimpase/sage/sage/local/lib/liblapack.so.3 >>> (0x00007f74f65fc000) >>> libcblas.so.3 => /home/scratch/dimpase/sage/sage/local/lib/libcblas.so.3 >>> (0x00007f74f63da000) >>> libf77blas.so.3 => >>> /home/scratch/dimpase/sage/sage/local/lib/libf77blas.so.3 >>> (0x00007f74f61b8000) >>> libatlas.so.3 => /home/scratch/dimpase/sage/sage/local/lib/libatlas.so.3 >>> (0x00007f74f5b2a000) >>> libgfortran.so.3 => /lib64/libgfortran.so.3 (0x00007f74f57ca000) >>> libquadmath.so.0 => /lib64/libquadmath.so.0 (0x00007f74f558b000) >>> libm.so.6 => /lib64/libm.so.6 (0x00007f74f5288000) >>> libc.so.6 => /lib64/libc.so.6 (0x00007f74f4ec7000) >>> libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f74f4caa000) >>> libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f74f4a92000) >>> /lib64/ld-linux-x86-64.so.2 (0x000055f7fadea000) >>> >>> as well as the CSDP installation log: >>> >>> SAGE_ROOT/logs/pkgs/csdp-6.2.log >>> >>> On Wednesday, May 11, 2016 at 12:58:43 PM UTC+1, Sihuang Hu wrote: >>>> >>>> I just did what you suggested, and it didn't work. I got those messages: >>>> >>>> (sage-sh) shhu@shhu-ee-tau:~$ theta 2k2 >>>> Segmentation fault (core dumped) >>>> >>>> My Cpu information is attached. >>>> Ubuntu 14.04LTS >>>> SageMath Version 7.0, Release Date: 2016-01-19 >>>> >>>> >>>> 在 2016年5月10日星期二 UTC+3下午11:55:55，Dima Pasechnik写道： >>>>> >>>>> here is the input for theta executable: >>>>> >>>>> 4 >>>>> 2 >>>>> 1 2 >>>>> 3 4 >>>>> >>>>> (also attached) >>>>> save it to a file named, say, 2k2, fire up "sage -sh" >>>>> and run >>>>> >>>>> theta 2k2 >>>>> >>>>> I get >>>>> >>>>> $ theta 2k2 >>>>> Graph is of size 4 2 >>>>> C block 1, blocksize, 4 >>>>> Checking constraint 1 >>>>> Checking constraint 2 >>>>> Checking constraint 3 >>>>> Iter: 0 Ap: 0.00e+00 Pobj: 1.0666667e+02 Ad: 0.00e+00 Dobj: >>>>> 0.0000000e+00 >>>>> [... edited] >>>>> Iter: 15 Ap: 1.00e+00 Pobj: 2.0000000e+00 Ad: 9.00e-01 Dobj: >>>>> 2.0000000e+00 >>>>> Success: SDP solved >>>>> Primal objective value: 2.0000000e+00 >>>>> Dual objective value: 2.0000000e+00 >>>>> Relative primal infeasibility: 1.11e-16 >>>>> Relative dual infeasibility: 2.12e-10 >>>>> Real Relative Gap: 8.56e-10 >>>>> XZ Relative Gap: 9.63e-10 >>>>> DIMACS error measures: 1.11e-16 0.00e+00 5.30e-10 0.00e+00 8.56e-10 >>>>> 9.63e-10 >>>>> The Lovasz Theta Number is 2.0000000e+00 >>>>> >>>>> Does this work for you? >>>>> >>>>> -- You received this message because you are subscribed to the Google Groups "sage-support" group. 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