June 2015 - Comp-phys-alps-users

Boost library not found on Mac
by Leo Fang 17 Jun '15

17 Jun '15

Hello all, I have the binary packages of alps 2.2.0b3, vistrails 2.1.2 and alps-vistrails-2.2.0b3 on Mac OS X 10.10.3 installed, and I've confirmed that the installation was complete and that I was able to run alps applications. However, when I tried to include the boost library in my C++ code (let's say I'd like to use the Gamma function), I found that including only one header file is not enough; when compiling using g++ test.cpp, the line #include "/opt/alps/include/boost/math/special_functions/gamma.hpp" gives an error message: In file included from test.cpp:5: /opt/alps/include/boost/math/special_functions/gamma.hpp:16:10: fatal error: 'boost/config.hpp' file not found #include <boost/config.hpp> ^ 1 error generated. A similar error message appeared even when I included boost/config.hpp. Did I overlook something? Thanks. Sincerely, Leo (Fang Yao-Lung) Duke Physics

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by zhian.asadzadeh＠gmail.com 17 Jun '15

17 Jun '15

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TEBD Fermion Hubbard with kink initial condition
by Deepak Iyer 16 Jun '15

16 Jun '15

Hi all, I couldn't find this addressed on the forums or docs. I get a segfault (invalid memory reference) while trying to run TEBD on the fermion Hubbard with kink initial state. I imagine it is getting confused while trying to set up the initial state. Any way I can get around this? Thanks! Deepak

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cmake error while building ALPS
by pradeep thakur 15 Jun '15

15 Jun '15

Dear ALPS-users and developers, While building ALPS from source "alps-2.1.1-r6176-src-with-boost" on a machine with operating system Xubuntu 12.04.5 LTS, I executed the following step in the build directory: $ cmake -D Boost_ROOT_DIR:PATH=/path/to/boost/directory /path/to/alps/directory giving the appropriate paths as follows: $ sudo cmake -D Boost_ROOT:DIR=/home/emmy/alps/alps-2.1.1-r6176-src-with-boost/boost/ /home/emmy/alps/alps-2.1.1-r6176-src-with-boost/alps/ The output was as shown below. The errors are mentioned at the end. I'm unable to complete configuration: ----------------------------------------------------- -- The C compiler identification is GNU -- The CXX compiler identification is GNU -- Check for working C compiler: /usr/bin/gcc -- Check for working C compiler: /usr/bin/gcc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Build type: Release -- Python interpreter /usr/bin/python -- Python interpreter ok : version 2.7.3 -- PYTHON_INCLUDE_DIRS = /usr/include/python2.7 -- PYTHON_NUMPY_INCLUDE_DIR = /usr/lib/python2.7/dist-packages/numpy/core/include -- PYTHON_SITE_PKG = /usr/lib/python2.7/dist-packages -- PYTHON_LIBRARY = /usr/lib/python2.7/config/libpython2.7.so -- PYTHON_EXTRA_LIBS =-lssl -lcrypto -lssl -lcrypto -L/usr/lib -lz -lpthread -ldl -lutil -- PYTHON_LINK_FOR_SHARED = -Xlinker -export-dynamic -Wl,-O1 -Wl,-Bsymbolic-functions -- ALPS version: 2.1.1 -- Looking for rpc/rpc.h -- Looking for rpc/rpc.h - found -- Looking for stdarg.h -- Looking for stdarg.h - found -- Looking for sys/stat.h -- Looking for sys/stat.h - found -- Looking for sys/systeminfo.h -- Looking for sys/systeminfo.h - not found -- Looking for sys/types.h -- Looking for sys/types.h - found -- Looking for unistd.h -- Looking for unistd.h - found -- Looking for windows.h -- Looking for windows.h - not found -- Looking for C++ include valarray -- Looking for C++ include valarray - found -- Looking for precompiled Boost libraries (version >= 1.47) CMake Error at /usr/share/cmake-2.8/Modules/FindBoost.cmake:426 (message): ERROR: Boost_ROOT is not the correct spelling. The proper spelling is BOOST_ROOT. Call Stack (most recent call first): /usr/share/cmake-2.8/Modules/FindBoost.cmake:572 (_Boost_CHECK_SPELLING) config/FindBoostForALPS.cmake:30 (find_package) CMakeLists.txt:248 (find_package) -- Configuring incomplete, errors occurred! -------------------------------------------------------- I changed the spelling in the command, but to no avail. Please do me a kindness by helping me here. Regards, Pradeep

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NN and NNN Heisenberg interactions on lattices: ALPS MC
by Swagata Acharya 05 Jun '15

05 Jun '15

Hi I simple want to write a script for 2d square lattice, with AFM Heisenberg interaction on nearest and next nearest neighbor bonds. How do I know if naming them respectively J0, and J1 (both AFM) should work or not? If I name them instead J1 and J2 should that work? My input file presently looks like: parms.append( { 'LATTICE' : "frustrated square lattice", 'T' : t, 'J0' : -1 , 'J1' : -0.5 , 'THERMALIZATION' : 10000, 'SWEEPS' : 500000, 'UPDATE' : "cluster", 'MODEL' : "Heisenberg", 'L' : 8, 'W' : 8 } ) I want NN J to be 1.0 and NNN J to be 0.5. Is that going in properly? The term "frustrated" in front of "square lattice", should that be necessary? What would be the extension of the name for the lattice when I do a cubic lattice, say, with J1 (NN), J2 (NNN), J3(NNNN)? How do I know in that case which direction is preferentially x, y and z? Thanks in advance for all the replies. Swagata -- *........................................................................................................................................................................Swagata Acharya* Dept. of Physics and Meteorology IIT Kharagpur B C Roy Hall of Residence Room NW 204 Mob: +91 9836893829 +91 9088377636 Volunteer : Padakshep , Vivekananda Study Circle Secretary: Padakshep(www.padakshep.org) *................................................................................................................................*

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failure of return of expectation value with mps method
by Cathy Wu 04 Jun '15

04 Jun '15

Hi everyone, I have been trying to calculate the expectation value of certain variables defined by 'MEASURE_AVERAGE[NAME]' using mps_evolve function and obtained the output .h5 file by running the function 'loadIterationMeasuremen', energy and parameters were returned, but the measurements were not!!!! So i used a h5 file viewer and found out that the results were actually collected under the repository /spectrum/iteration. I also tried the 4 tutorial scripts in mps-06-kink file and same story happened. There are two things I want to consult, 1. is it correct that the expectation value are stored under spectrum/iteration? and I am also a little baffled why the folders under iteration are named with random numbers. 2. how to read the results with functions from alps. I tried to read the .h5 file with h5py module of python and it does not recognize any dataset as 'spectrum'. Please help![?] best,

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Honeycomb lattice not working with boson Hubbard model
by Kristina Fidanovski 03 Jun '15

03 Jun '15

Dear Developers, I'm trying to look into the extended boson Hubbard model on a honeycomb lattice, but no matter what I do the density always comes out as zero. I don't seem to have the same problem when using a honeycomb lattice with any of the other examples in the tutorials. What could be the problem? All the best, Kristina

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