Comp-phys-alps-users

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1248 discussions

ALPS release 1.3.2
by Matthias Troyer 06 Jun '08

06 Jun '08

Dear colleagues, Following the Sherbrooke/Jouvence summer school we have released a new version of ALPS with several improvements and bug fixes including * a printgraph tool * a bug fix in the fermion model * a new coupled ladder lattice * support for random couplings in disordered models Matthias Troyer

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Re: [ALPS-users] Alps 1.3.1 spinmc compile problem
by Synge Todo 31 May '08

31 May '08

Does anyone have an experience on Ubuntsu Linux? Synge From: "Miles Stoudenmire" <miles.stoudenmire(a)gmail.com> Date: Fri, 30 May 2008 08:55:53 -0700 > Hi Synge - I'm using Ubuntu Linux on a machine with an AMD processor. > I tried installing the lapack 3.0 package through apt-get and saying > --with-lapack-dir=/usr/lib --with-lapack=-llapack because the lapack > library files got installed in /usr/lib (I have no idea if those > arguments are sensible, they were just a … [View More]

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ALPS 1.3.1,dirloop_sse: symmetry breaking
by Beni Thielemann 30 May '08

30 May '08

Hi all, I'm trying to calculate the Neel temperature in an Heisenberg antiferromagnet and wonder how the symmetry breaking is considered in dirloop_sse: Do I have to define the direction of symmetry breaking by including a small (small enough to not affect the results) magnetic field? If so, is there a way to do simulations with transverse staggered magnetic fields in ALPS/diroop_sse? (the <HAMILTONIAN name="spin"> node in models.xml looks like it only allows for a uniform transverse … [View More]

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Alps 1.3.1 spinmc compile problem
by Miles Stoudenmire 30 May '08

30 May '08

I'm trying to build the latest version of ALPS, and I'm primarily interested in the classical monte carlo app. I built the new version of the libraries ok, but then when I tried to compile the spinmc app, I got the error below. It looks like it's referring to some funny lapack function from what I can tell, so I think I should mention that I did not build the libraries with lapack support (though the configure script claimed that I'd be ok to compile classical monte carlo). If it does turn out … [View More]to be because I need to add lapack support, I will have to ask some questions about how to do that. make[1]: Entering directory `/miles/alps-applications-1.3.1/mc/spins' /bin/bash ../../libtool --tag=CXX --mode=link g++ -pthread -ftemplate-depth-150 -O3 -DBOOST_DISABLE_ASSERTS -fexceptions -w -L/miles/ALPS/lib -o spinmc spinmc.o abstract_fitter.o base_incr_fitter.o dummy_fitter.o est_grad_fitter.o fitting_scheduler.o spinmc_factory.o -lalps -lcomm-sgl -lpthread -lm g++ -pthread -ftemplate-depth-150 -O3 -DBOOST_DISABLE_ASSERTS -fexceptions -w -o spinmc spinmc.o abstract_fitter.o base_incr_fitter.o dummy_fitter.o est_grad_fitter.o fitting_scheduler.o spinmc_factory.o -L/miles/ALPS/lib /miles/ALPS/lib/libalps.so /miles/ALPS/lib/libcomm-sgl.so -lpthread -lm -Wl,--rpath -Wl,/miles/ALPS/lib -Wl,--rpath -Wl,/miles/ALPS/lib est_grad_fitter.o: In function `double solve_llsp<double, boost::numeric::ublas::basic_column_major<unsigned int, int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >(boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_column_major<unsigned int, int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > const&, boost::numeric::ublas::vector<double, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > const&, boost::numeric::ublas::vector<double, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >&, double)': est_grad_fitter.C:(.text._Z10solve_llspIdN5boost7numeric5ublas18basic_column_majorIjiEENS2_15unbounded_arrayIdSaIdEEEET_RKNS2_6matrixIS8_T0_T1_EERKNS2_6vectorIS8_NS5_IS8_SaIS8_EEEEERSI_d[double solve_llsp<double, boost::numeric::ublas::basic_column_major<unsigned int, int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >(boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_column_major<unsigned int, int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > const&, boost::numeric::ublas::vector<double, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > const&, boost::numeric::ublas::vector<double, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >&, double)]+0x14a): undefined reference to `dgesvd_' est_grad_fitter.C:(.text._Z10solve_llspIdN5boost7numeric5ublas18basic_column_majorIjiEENS2_15unbounded_arrayIdSaIdEEEET_RKNS2_6matrixIS8_T0_T1_EERKNS2_6vectorIS8_NS5_IS8_SaIS8_EEEEERSI_d[double solve_llsp<double, boost::numeric::ublas::basic_column_major<unsigned int, int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >(boost::numeric::ublas::matrix<double, boost::numeric::ublas::basic_column_major<unsigned int, int>, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > const&, boost::numeric::ublas::vector<double, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > > const&, boost::numeric::ublas::vector<double, boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >&, double)]+0x5ac): undefined reference to `dgesvd_' collect2: ld returned 1 exit status make[1]: *** [spinmc] Error 1 make[1]: Leaving directory `/miles/alps-applications-1.3.1/mc/spins' make: *** [all-recursive] Error 1 -- -=Miles Stoudenmire=- miles(a)physics.ucsb.edu miles.stoudenmire(a)gmail.com http://www.crazytheory.com/ [View Less]

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Monte Carlo - Extending Sweeps
by Miles Stoudenmire 29 May '08

29 May '08

Hi, I've been working with the ALPS classical monte carlo program, and according to the ALPS website/wiki, it should be possible to take a finished simulation, edit number of SWEEPS in the simulation_name.task#.out.xml files, set the status of the task from "finished" to "running" in the simulation_name.out.xml file and then do "spinmc simulation_name.out.xml". However, the program immediately throws an exception saying "Cannot change parameter SWEEPS". I determined that the exception is being … [View More]

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DMRG Truncation Error
by Niall Moran 26 May '08

26 May '08

Hi, I am using the ALPS DMRG code to look at a 1D system. I am comparing the results for small system sizes with the results from exact diagonalisation to verify them. The values match to 5 - 6 decimal places in most cases. However I always get a truncation error or 1. Is this normal behavior? I am using ALPS 1.3.1. Many Thanks, Niall.

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ALPS 1.3.1 released
by Matthias Troyer 21 May '08

21 May '08

Dear colleagues, In preparation for the Sherbrooke summer school we releases ALPS 1.3.1 including the following bug fixes: * the hexagonal lattice is now correctly defined a a 3D lattice * the default random number generator was switched to a Mersenne Twister * a bug in calculating total energies in a classical Heisenberg model with single ion anisotropy was fixed It can be downloaded from the ALPS server at http://alps.comp-phys.org/ Matthias Troyer

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What's ALPS/ISUM?
by Zhenhui Liu 15 May '08

15 May '08

hi, does anyone knows the ALPS/ISUM code? best regards

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Can not download files from "User Workshops"To whom it may concern:
by dulei 15 May '08

15 May '08

To whom it may concern: Almost every file can not be downloaded form http://www.comp-phys.org/lugano04/Talks.html except Wang-Landau sampling(QWL.pdf) and Path Integrals and Quantum Monte Carlo (qmc.pdf). Another files are "Not Found. Requested URL /lugano04/Talks/IntroToCpp.pdf was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request." Please tell me where I can download these files. Thank you very much. … [View More]

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A detailed process of installing ALPS and Some errors in the process (To a pdf document)
by dulei 31 Mar '08

31 Mar '08

To whom it may concern: After I met some problems about using Alps application. I re-installed my linux system and all softwares. So I found why I could not use alps to calculate. There are errors in the process of installing Alps Application 1.3. And I could not install Alps Application 1.3 to my system. According Prof. Matthias Troyer's comment and because these pictures are too big, I made a pdf document and sent it to my hotmail. Please visit it at http://www.hotmail.com username: … [View More]

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Comp-phys-alps-users