Comp-phys-alps-users March 2016

comp-phys-alps-users@lists.phys.ethz.ch

7 participants
4 discussions

sparsediag 16-site Hubbard chain
by Chia-Chen Chang 16 Mar '16

16 Mar '16

Dear ALPS users, I ran into an issue when I tried to get the ground state energy of L=16 Hubbard 1d chain using ALPS' sparsediag. My input file is attached. The script works for L=12 and 14. With L=16, the simulation just terminated without giving any warnings or error messages. Not sure what was going on. Is it possible that my machine's running out of memory because L=16 is a rather large system in terms of Hilbert space size. Thanks for your time and help. ====================== Chia-Chen Chang cxc639(a)gmail.com

2 1

the problem of running parallelly with mps_optim
by Forwordom 14 Mar '16

14 Mar '16

Dear, M. Dolfi I have installed alps-2.2.b4 using openmpi successfully on Suse 11.0. There are not any errors during make, make test, and make install. After installation I can running successfully mps_optim serially or 1-4 CPUs. I have encountered some errors while running mps_optim parallelly using 4 or more CPUs. ...... Running task 1. Running task 1. This binary contains symmetries: nu1 This binary contains symmetries: nu1 MAQUIS repo r4143 MAQUIS repo r4143 Temporary storage … [View More]

2 1

always_measure vs ALWAYS_MEASURE and errors while measurement
by Mateusz Łącki 12 Mar '16

12 Mar '16

Dear All, I would like to compute overlap <\psi(t) | \psi(0)> for an simple open chain system using mps tools. I have encountered a series of errors while doing so. *************example 1 - input************* LATTICE='chain lattice' MODEL="spin" nsweeps=3; L=20 MAXSTATES=100 TIMESTEPS=50 DT=0.1 J=2 Jxy=0.5 measure_each=1 S_total=1/2 CONSERVED_QUANTUMNUMBERS='Sz' MEASURE[Entropy]=True COMPLEX=1; {} **************************************************** The above run with mps_optim … [View More]

2 1

Failed tests in the make test of ALPS2.2 installation
by D´Souza, Sunil Wilfred 11 Mar '16

11 Mar '16

Dear Alps users, I have installed the ALPS2.2 package by building from the source in my laptop containing the SUSE 11.4 operating system. The cmake and make command worked fine, but then the make test command shows the following test failed 95% tests passed, 7 tests failed out of 149 The following tests FAILED: 1 - ising_single (Failed) 2 - ising (Failed) 3 - heisenberg (Failed) 4 - loop_single (Failed) 5 - exchange (Failed) … [View More]

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Comp-phys-alps-users March 2016