December 2016 - Comp-phys-alps-users

Converting observables to traditional units
by Dave Maren 19 Dec '16

19 Dec '16

Dear alps users and developers, I recently installed the ALPS libraries without any problem in Debian 8.6. Following the tutorials in the wiki page I’ve been able to create my own lattices and running some example simulations. Right now, I’m studying a system (Classic Monte Carlo) that has two types of spins under the presence of an external magnetic field, the Hamiltonian is like : J1*(S1i * S1j) + J2*(S2i * S2j) + J12*(S1i * S2j) + (Zeeman) For what I’ve been reading in the help page and forum, all observables calculated in terms of energy units. Can someone explain me how convert all the quantities to traditional units like Kelvin, Tesla, etc...? I have the magnetization, specific heat and connected susceptibility for a wide range of different J1, J2 and J12 couplings and external fields. I looked in previous post and information in the wiki page without success. I hope you can help me, I would really appreciate. Thanks, Dave

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Installation problem of alps-2.2 version in Ubuntu
by Santu Baidya 15 Dec '16

15 Dec '16

Dear alps users, I am currently installing alps-2.2.b3-r7462-src-with-boost in Linux, 4.4.0-47-generic #68-Ubuntu, x86_64, GNU/Linux. I first followed the instruction and ran the command: cmake -D Boost_ROOT_DIR=/opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost -DCMAKE_INSTALL_PREFIX=/opt/alps-2.2 /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/alps It ran without any problem.After that when I ran make i got some error for installation: /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:16: error: ‘uintptr_t’ was not declared in this scope typedef atomic<uintptr_t> atomic_uintptr_t; ^ /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:25: error: template argument 1 is invalid typedef atomic<uintptr_t> atomic_uintptr_t; ^In file included from /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost/boost/thread/once.hpp:20:0, from /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/./once_atomic.cpp:9, from /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/once.cpp:8: /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost/boost/thread/pthread/once_atomic.hpp:120:37: warning: variadic templates only available with -std=c++11 or -std=gnu++11 template<typename Function, class ...ArgTypes> ^ /opt/alps-2.2/alps-2.2.b3-r7462-src-with-boost/boost/boost/thread/pthread/once_atomic.hpp:121:108: warning: variadic templates only available with -std=c++11 or -std=gnu++11 inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args) ^ src/boost/CMakeFiles/boost.dir/build.make:3302: recipe for target 'src/boost/CMakeFiles/boost.dir/__/__/boost/libs/thread/src/pthread/once.cpp.o' failedmake[2]: *** [src/boost/CMakeFiles/boost.dir/__/__/boost/libs/thread/src/pthread/once.cpp.o] Error 1CMakeFiles/Makefile2:1081: recipe for target 'src/boost/CMakeFiles/boost.dir/all' failedmake[1]: *** [src/boost/CMakeFiles/boost.dir/all] Error 2Makefile:160: recipe for target 'all' failedmake: *** [all] Error 2 Please help me to install this code in Ubuntu in my pc. Thanking you, Dr. Santu BaidyaSeoul National UniversitySouth korea

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Problems with recent HDF5 1.10.0
by Michele Dolfi 09 Dec '16

09 Dec '16

Dear all, We recently found a bug in the new version of HDF5 1.10.0. Among others, the HDF5 library will abort while reading some data before the (alps) archive has been closed and sometimes it will fail to overwrite in a dataset that already exists. We noticed that the pyalps test pyhdf5.py is affected but this, as well as some routine in the saving of ALPS.Alea results (for an example, just run the tutorial mc-01). Jan Gukelberger reported the bug and a patch to the HDF Group and we hope this could quickly be incorporated in the next release. For the moment we highly recommend to use the version 1.8.x of HDF5. Best regards, Michele -- ETH Zurich Dr. Michele Dolfi Institute for Theoretical Physics HIT G 32.4 Wolfgang-Pauli-Str. 27 8093 Zurich Switzerland dolfim(a)phys.ethz.ch www.itp.phys.ethz.ch +41 44 633 78 56 phone +41 44 633 11 15 fax

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Distributed diagonalization
by Brandt, Benedikt B 08 Dec '16

08 Dec '16

Hi all Has there ever been any attempt to write an extension of the sparse-diagonalization code that allows the matrix to be stored across multiple machines? In other words so that one can use the combined processing power and storage of multiple nodes in a cluster? If I see it correctly, alps can use MPI but doesn't share resources across nodes. Is that correct? Thanks Benedikt

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vistrails - package org.comp-phys.alps (version 2.2.1) is out of date
by Brandt, Benedikt B 02 Dec '16

02 Dec '16

Dear alps community I succesfully compiled and installed alps from SVN (revision 7792) on ubuntu 16.04. However when I try to open a .vt file in vistrails 2.2.4 I get the following error: "Module Tools|MplXYPlotCell in package org.comp-phys.alps (version 2.2.1) is out of date. Please check with the package developer for a new version" Is there a specific version of vistrails that I need to use? Thanks Benedikt

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