Vasp premium

vasp premium

What is the VASP Premium web site?

The Vasp Premium Web Site is comprised of various Web pages operated by Vasp Premium. The Vasp Premium Web Site is offered to you conditioned on your acceptance without modification of the terms, conditions, and notices contained herein. Your use of the Vasp Premium Web Site constitutes your agreement to all such terms, conditions, and notices.

Can I remove a submission from my VASP premium profile?

Vasp Premium is under no obligation to post or use any Submission you may provide and may remove any Submission at any time in Vasp Premiums sole discretion.

How does VASP distribute work and data over the MPI ranks?

By default VASP distributes work and data over the MPI ranks on a per-orbital basis (in a round-robin fashion): Bloch orbital 1 resides on rank 1, orbital 2 on rank 2. and so on.

What is the use of personal information in VASP premium?

Vasp Premium collects and uses your personal information to operate the Vasp Premium Web site and deliver the services you have requested. Vasp Premium also uses your personally identifiable information to inform you of other products or services available from Vasp Premium and its affiliates.

What is a virtual asset service provider (VASP)?

As stated in the FATF Glossary, a Virtual Asset Service Provider (VASP)is any natural or legal person who is not covered elsewhere under the Recommendations and as a business conducts one or more of the following activities or operations for or on behalf of another natural or legal person: Centralized Crypto Exchange

Can I remove a submission from my VASP premium profile?

Vasp Premium is under no obligation to post or use any Submission you may provide and may remove any Submission at any time in Vasp Premiums sole discretion.

What determines the performance of VASP?

The BLAS library is external to the VASP source code and is hopefully already optimized, and the FFT source code is not helped by aggressive compiler optimizations (-O1 or similar is enough). From this we draw the conclusion the performance of VASP is mainly determined by the choice of BLAS/LAPACK and FFT libraries.

What is MPI and how does it work?

MPI allows you to create logical groupsof processes, and in each group, a process is identified by its rank. This is an integer in the range [0, N-1] where N is the size of the group.

Should I run with multiple OpenMP threads per MPI rank?

It is helpful to run with multiple OpenMP threads per MPI rank to leverage the CPUs remaining computational power for those parts of VASP that still run on the CPU side. Important: When running with a single OpenMP thread per MPI rank, there is no appreciable difference between a VASP run with an MPI+OpenMP executable and an MPI-only one.

What is the source code of VASP?

The source of VASP comes in two files (“tarballs”) named something along the lines of: vasp.4.6.tar.gz, vasp.4.lib.gz. Usually one acquires these files from the official FTP server of the VASP Group. The folder vasp.4.6 contains the main source code of VASP, and vasp.4.lib contains a library with some subroutines necessary for compatibility.

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