February 2012 - Comp-phys-alps-users

(no subject)
by #ABDUL MALEK BIN RAZALI# 07 Feb '12

07 Feb '12

Hi, I'm currently doing a project involving honeycomb lattice involving nearest and next nearest neighbour interaction. How do i go about modifying the lattice ? Regards

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Re: [ALPS-users] S-Squared operator
by Stone, Matthew B. 04 Feb '12

04 Feb '12

Matthias, et al., Could you please post how to code this for one, two, three and four spins? From there I should be able to extend it out to N spins. I'll likely be working with N<=16. Thanks, Matt Stone >For many spins you need to code each number of spins separately, but it gets ugly pretty soon. > >Matthias > >>On 24 Jan 2012, at 19:36, Stone, Matthew B. wrote: >> >> Has anyone written an ALPS operator for the operator S^2 for a general number of spins in a system? >> >> For example, I would like to list the Sztotal and S^2 values for different energy levels calculated. >> >> The S^2 operator can be written as >> S^2 = (S_1 + S_2 + S_3 +?)^2 >> where S_1, S_2, etc. are the vector operators. >> >> for two spins one can write this as >> S^2 = (S_1 + S_2)^2 >> = (S_1)^2 + (S_2)^2 + 2 S_1 \dot S_2 >> = s(s+1) + s(s+1) + 2S_{1z}S_{2z} + S_{1+}S_{2-} + S_{1-}S_{2+} >> >> But I don?t see how to generalize this for a system of many spins >> using the ALPS ?spin? sitebasis and basis in order to have this operator value listed in the output calculations. >> >> Any help would be appreciated. >> Thanks, >> >> Matthew B. Stone >> Neutron Scattering Science Division >> Oak Ridge National Laboratory >> PO box 2008 MS6475 >> Oak Ridge, TN 37831-6475 >> >> Phone: 1-865-202-6898 >> Fax: 1-865-574-6080 >>

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Re: [ALPS-users] errors: installing ALPS 2.0.3 on Ubuntu 11.10
by Jin Xu 01 Feb '12

01 Feb '12

CMake Error at cmake_install.cmake:54 (FILE): file cannot create directory: /usr/bin/vistrails/packages. Maybe need administrative privileges. Oh, by the way, do I have to install Vistrails if I just wanna use python? On Wed, Feb 1, 2012 at 6:34 PM, Matthias Troyer <troyer(a)phys.ethz.ch> wrote: > > On Feb 1, 2012, at 3:45 AM, Jin Xu wrote: > > *Hello Matthias, > > Thanks for your reply. > > 1. After "./test/fixed_capacity/test_* > *vector" > terminate called after throwing an instance of 'std::logic_error' > what(): non_pod > Aborted > * > > > Synge, is that a known problem? > > * > 2. I did try "sudo make install" but the errors were still there. > * > > > which errors? > > * > 3. Since I am not so experienced in Linux, I don't quite understand " add > the ALPS installation to your path". Could you tell me more detailed > technical things?* > > > Just type > > export PATH=/opt/alps/bin:$PATH > > or call the ALPS programs with the /opt/alps/bin prefix, > e.g. /opt/alps/bin/dmrg > > Matthias > > > > On Wed, Feb 1, 2012 at 6:13 AM, Matthias Troyer <troyer(a)phys.ethz.ch>wrote: > >> Hi Jin Xu, >> >> >> On 31 Jan 2012, at 16:35, Jin Xu wrote: >> >> Dear Madam/Sir, >> >> I am a senior undergraduate student from Department of Physics, Zhejiang >> University, China. >> >> I've been trying many times to install ALPS 2.0.3 on my Ubuntu 11.10 >> Desktop but I failed. I will appreciate if you could help me fix the >> problems so that I can use python to run ALPS. >> >> 7. After make test, there come some errors: >> 98% tests passed, 2 tests failed out of 99 >> >> Total Test time (real) = 16.81 sec >> >> The following tests FAILED: >> 23 - test_vector (Failed) >> 40 - lattice_constant_test (Failed) >> >> >> The lattice_constant_test can be ignored, but please run the test_vector >> executable (./test/fixed_capacity/test_vector from the build directory) and >> send us the output. >> >> >> Errors while running CTest >> make: *** [test] Error 8 >> >> >> >> 8. After make install, there are also some errors: >> CMake Error at cmake_install.cmake:54 (FILE): >> file cannot create directory: /usr/bin/vistrails/packages. Maybe need >> administrative privileges. >> >> >> Yes, you need to use >> >> sudo make install >> >> >> 9. Now I still cannot run ALPS on my laptop (dmft-02-hybridization): >> alpspython tutorial2a.py >> alpspython: command not found >> >> >> You need to add the ALPS installation to your path. >> >> >> python tutorial2a.py >> Traceback (most recent call last): >> File "tutorial2a.py", line 27, in <module> >> import pyalps >> ImportError: No module named pyalps >> >> >> You need to use either alpspython, or install pyalps into your system >> python directory. >> >> >> dmft hybrid.param >> No command 'dmft' found, did you mean: >> Command 'mft' from package 'texlive-binaries' (main) >> dmft: command not found >> >> >> You need to add the ALPS installation to your path. >> >> >> >> >> Best regards >> >> Matthias Troyer >> >> > > > -- > *Jin Xu* > > *Undergraduate Student* > > *Department of Physics, Zhejiang University, Hangzhou, 310027, China* > > *Email: jin.xu(a)ualberta.ca* > > *Skype Handle: trivial19891016* > > > -- *Jin Xu* *Undergraduate Student* *Department of Physics, Zhejiang University, Hangzhou, 310027, China* *Email: jin.xu(a)ualberta.ca* *Skype Handle: trivial19891016*

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Re: [ALPS-users] errors: installing ALPS 2.0.3 on Ubuntu 11.10
by Jin Xu 01 Feb '12

01 Feb '12

*Hello Matthias, Thanks for your reply. 1. After "./test/fixed_capacity/test_* *vector" terminate called after throwing an instance of 'std::logic_error' what(): non_pod Aborted 2. I did try "sudo make install" but the errors were still there. 3. Since I am not so experienced in Linux, I don't quite understand " add the ALPS installation to your path". Could you tell me more detailed technical things?* On Wed, Feb 1, 2012 at 6:13 AM, Matthias Troyer <troyer(a)phys.ethz.ch> wrote: > Hi Jin Xu, > > > On 31 Jan 2012, at 16:35, Jin Xu wrote: > > Dear Madam/Sir, > > I am a senior undergraduate student from Department of Physics, Zhejiang > University, China. > > I've been trying many times to install ALPS 2.0.3 on my Ubuntu 11.10 > Desktop but I failed. I will appreciate if you could help me fix the > problems so that I can use python to run ALPS. > > 7. After make test, there come some errors: > 98% tests passed, 2 tests failed out of 99 > > Total Test time (real) = 16.81 sec > > The following tests FAILED: > 23 - test_vector (Failed) > 40 - lattice_constant_test (Failed) > > > The lattice_constant_test can be ignored, but please run the test_vector > executable (./test/fixed_capacity/test_vector from the build directory) and > send us the output. > > > Errors while running CTest > make: *** [test] Error 8 > > > > 8. After make install, there are also some errors: > CMake Error at cmake_install.cmake:54 (FILE): > file cannot create directory: /usr/bin/vistrails/packages. Maybe need > administrative privileges. > > > Yes, you need to use > > sudo make install > > > 9. Now I still cannot run ALPS on my laptop (dmft-02-hybridization): > alpspython tutorial2a.py > alpspython: command not found > > > You need to add the ALPS installation to your path. > > > python tutorial2a.py > Traceback (most recent call last): > File "tutorial2a.py", line 27, in <module> > import pyalps > ImportError: No module named pyalps > > > You need to use either alpspython, or install pyalps into your system > python directory. > > > dmft hybrid.param > No command 'dmft' found, did you mean: > Command 'mft' from package 'texlive-binaries' (main) > dmft: command not found > > > You need to add the ALPS installation to your path. > > > > > Best regards > > Matthias Troyer > > -- *Jin Xu* *Undergraduate Student* *Department of Physics, Zhejiang University, Hangzhou, 310027, China* *Email: jin.xu(a)ualberta.ca* *Skype Handle: trivial19891016*

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