Some tips for MPI and cluster usage

Note, that all information below may not be suitable for every computing cluster due to many differences in operation systems and local settings for user management and parallelization software. Available modules. Command $ module avail gives the list of available modules, such as mpi/openmpi/1.3.2/intel for example. Command «module load <modulename>», where <modulename>…

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Multithreading OOMMF in Linux

Today I want to say some few words about the multithreading OOMMF in Linux. As I know in Windows the last versions of OOMMF, like 12a4 and later (OOMMF), are basically could keep more than 1 thread and accelerate the simulations by paralleling calculations, but you may use for this multithreading Tcl/Tk.  In the…

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The results of scientific workshop: Spin-polarized current and spin-transfer torque

According to the results of the scientific workshop I want to publish final presentation and put it to the free access, you can find it by the link: Download

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Fun with very large numbers from R. Baillie

I have found a link to an interesting paper in a one social network. Robert Baille shows a few tricks with «almost» true functions: they can be true in the huge interval of their arguments, but fail for the other their values. And numerical methods will fail for direct check. Link…

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Scientific workshop: Spin-polarized current and spin-transfer torque

I am pleased to invite everyone to the scientific workshop, which will be held on 14th January at the Bogolyubov Institute for Theoretical Physics (14-b, Metrolohichna str.Kiev, Ukraine) and will start at 3 PM. On this workshop I want to tell about the nature of spin-polarized current in magnetic multilayers…

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pybibparse v0.11

First version of python-based bibtex parser pybibparse v0.11 is released! Improved work with entries: they are accessible via index in internal list of entries. Use and enjoy 🙂

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Magnetic vortex-antivortex crystals generated by spin-polarized current

We study vortex pattern formation in thin ferromagnetic films under the action of strong spin-polarized currents. Considering the currents which are polarized along the normal of the film plane, we determine the critical current above which the film goes to a saturated state with all magnetic moments being perpendicular to…

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Bloch Point Structure in a Magnetic Nanosphere

We classify possible types of Bloch points and analytically derive the shape of the magnetization distribution for different Bloch points. Phys. Rev. B 85, 224401 (2012), 10.1103/PhysRevB.85.224401, PDF. Supplementary materials.

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