- Comp-phys-alps-users - lists.phys.ethz.ch

mpirun
by Tadeusz Wasiutyński 27 Oct '17

27 Oct '17

Hello, sorry for being not precise enough. I did install mpirun by conda but the response is: This program has not been compiled for use with MPI is it so or I made some mistake when installing alps by conda. BTW alps works smoothly otherwise. Regards 2017-10-25 12:00 GMT+02:00 <comp-phys-alps-users-request(a)lists.phys.ethz.ch> : > Send Comp-phys-alps-users mailing list submissions to > comp-phys-alps-users(a)lists.phys.ethz.ch > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.phys.ethz.ch/listinfo/comp-phys-alps-users > or, via email, send a message with subject or body 'help' to > comp-phys-alps-users-request(a)lists.phys.ethz.ch > > You can reach the person managing the list at > comp-phys-alps-users-owner(a)lists.phys.ethz.ch > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Comp-phys-alps-users digest..." > > Today's Topics: > > 1. mpirun (Tadeusz Wasiuty?ski) > > > ---------- Wiadomość przekazana dalej ---------- > From: "Tadeusz Wasiutyński" <tadeusz.wasiutynski(a)gmail.com> > To: comp-phys-alps-users(a)lists.phys.ethz.ch > Cc: > Bcc: > Date: Tue, 24 Oct 2017 22:02:34 +0200 > Subject: [ALPS-users] mpirun > I have installed alps with Conda. Now I can not figure out how to run it > mpi mode: mpirun not found. Previously I always build from source and put > some parameters in cmake command. What can I do now? > > -- > Tadeusz Wasiutyński > > ---- > Comp-phys-alps-users Mailing List for the ALPS Project > http://alps.comp-phys.org/ > > List info: https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users > Archive: https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users > > Unsubscribe by writing a mail to comp-phys-alps-users-leave@ > lists.phys.ethz.ch. > -- Tadeusz Wasiutyński

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alps mps application can not spawn threads with OpenMP when I use slurm
by Sun Rongyang 26 Sep '17

26 Sep '17

Dear all, The amazing mps code (mps_evolve and mps_optim) works very well with OpenMP on a node of a cluster when I start the task by hand. It can spawn many threads and calculate very fast. But when I wrote a sbatch script to commit a job to cluster by slurm, the mps applications can only use one thread and calculate very slowly. The sbatch script is shown as ----------------------------------------------------------------- #!/bin/bash #SBATCH --job-name=test_alps_omp #SBATCH --output=test_alps_omp.out #SBATCH --ntasks=1 #SBATCH --cpus-per-task=4 export OMP_NUM_THREADS=$SLURM_CPUS_PER_TASK mps_evolve test_alps_omp.in.xml ----------------------------------------------------------------- Does anyone have any idea about it? Thanks a lot! Beat regards, Rongyang Sun ----------------------------------------------------------------- Rongyang Sun Ph.D. Candidate Theoretical Quantum Matter Physics Institute for Advanced Study, Tsinghua University, Beijing 100084, China E-mail: sunry15(a)mails.tsinghua.edu.cn; sun-rongyang(a)outlook.com

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pairing correlation
by Chia-Chen Chang 15 Sep '17

15 Sep '17

Greetings ALPS users. For benchmark purposes, I'm interested in getting superconducting pair correlation functions on small clusters using ALPS' exact diagonalization library. If this is doable, I am wondering if there is a way to define extended operators such as d-wave or p-wave pair field operators? Thanks for your help! Chiachen Chang

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Eigenvalues of the reduced density matrix using MPS
by Desmond 11 Sep '17

11 Sep '17

Hi everyone, I'm wondering if we can get information regarding the eigenvalues of the reduced density matrix during the calculation. I understand that the entanglement entropy can be measured in the latest versions. However, it would be useful if we could extract the eigenvalues themselves. That would allow us to analyze the entanglement spectrum and more. Best, Desmond

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[ALPS] Randomized parameter per site
by John Ian Kenneth E. Felismino 05 Sep '17

05 Sep '17

Hi! Is it possible to have a site-dependent random parameter using DMRG in ALPS? For example in every a different random value for the Magnetic Field Strength acting on the model is assigned to each site. Thanks, Ian Felismino

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Total particle number can not be conserved using ALPS TEBD simulation
by Sun Rongyang 02 Sep '17

02 Sep '17

Dear ALPS users, When I follow the ALPS TEBD tutorial about hard-core boson model(http://alps.comp-phys.org/mediawiki/index.php/ALPS_2_Tutorials:TEBD-0… by Python, I measured the average particle number for each site, i.e. 'Avg Number' except the 'Loschmidt Echo' and 'V' by the following python code: data = pyalps.load.loadTimeEvolution(pyalps.getResultFiles(prefix='1D_HardcoreBosonModel'), measurements=['Loschmidt Echo', 'V', 'Avg Number']) Then I found the 'Avg Number' equals 0.3! This means that the total particle number is 0.3*10=3, not 5. In the tutorial, the conserved quantum number is 'N_total': 5. When I change the 'N_total' to 1 and 10, I got the same 'Avg Number'=0.3 Can any one give me some help? Thanks a lot! Best regards, Rongyang Sun ----------------------------------------------------------------- Rongyang Sun Ph.D. Candidate Theoretical Quantum Matter Physics Institute for Advanced Study, Tsinghua University, Beijing 100084, China E-mail: sunry15(a)mails.tsinghua.edu.cn; sun-rongyang(a)outlook.com

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staggered susceptibility
by Stanislaw Galeski 23 Aug '17

23 Aug '17

Dear All, I am trying to calculate the staggered susceptibility of a Heisenberg spin ladder in a magnetic field, however the results I am got seem a bit disturbing. Thus my question: in the dirloop_sse package does the staggered susceptibility mean a staggered response to a staggered field of a staggered response to a uniform field? Unfortunately I could not find the answer in the wiki. Thanks for help! Stanislaw _____ Stanislaw Galeski ETH Zurich Laboratory for Solid State Physics HPF F 15 Otto-Stern-Weg 1 CH-8093 Zurich Switzerland

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Question about installing ALPS through anaconda
by Yi-Ping Huang 19 Aug '17

19 Aug '17

Hi, I try to use $conda install -c conda-forge alps to install ALPS using the most updated anaconda package. However, I got the error message suggesting some dependency issue. UnsatisfiableError: The following specifications were found to be in conflict: - alps - navigator-updater Use "conda info <package>" to see the dependencies for each package. As I try to use conda info navigator-updater to check what is happening, it somehow suggest navigator-updater 0.1 is build using python 3.6. Is it why I get the dependency issue? If so, can I still using anaconda to install ALPS? or I need to build it from the source files? Thanks a lot. Yi-Ping

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[ALPS} Using nvblas to boost calculations
by John Ian Kenneth E. Felismino 19 Aug '17

19 Aug '17

Greetings! I was wondering if it is possible to add nvblas from cuda 8.0 when building alps to boost the speed of the calculations. This possible increase in speed and efficiency will help a lot to me and my colleagues who have share computing resources in the laboratory. Thanks, Ian Felismino

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Can the mps_optim calculate the entanglement spectrum of the lattice with two cuts ?
by X****** **** 19 Aug '17

19 Aug '17

Dear all, Can the mps_optim calculate the entanglement spectrum of the lattice with two cut ? For instance, the lattice is separated to A B C, how to calculate the -Ln(\rho_B), \rho_B=Tr_{A,C} |\Phi><\Phi|. Thanks, Xiaofan Zhou

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