Espresso

General information

opEn-SourceP ackage for Research in Electronic Structure, Simulation, and Optimization

ESPRESSO is an integrated suite of computer codes for electronic-structure calculations and materials modeling at the nanoscale. It is based on density-functional theory, plane waves, and pseudopotentials (both norm-conserving and ultrasoft).

The 6.1 version is availabe.  The home page of the code is in  DEMOCRITOS National Simulation Center of the Italian INFM.

Quantum ESPRESSO builds onto newly-restructured electronic-structure codes (PWscf, PHONON, CP90, FPMD, Wannier) that have been developed and tested by some of the original authors of novel electronic-structure algorithms – from Car-Parrinello molecular dynamics to density-functional perturbation theory – and applied in the last twenty years by some of the leading materials modeling groups worldwide. Innovation and efficiency is still our main focus.

How to use

[intlink id=”4795″ type=”post”] See how to send espresso  section.[/intlink]

Monitorization

  • remote_vi: Shows the *.out file of espresso.
  • myjobs: During the execution of a job it shows the CPU and memory (SIZE) usage.

Benchmark

We show various benchmarks results for  ph.x and pw.xy in our  service the machines. The best are the Xeon nodes and scale well up to 32 cores. Notice that the communication network in the  Xeon nodes is better.

Tabla 1:Execution times pw.x (4.2.1 version).
System 8 cores 16 cores 32 cores
Xeon 1405 709 378
Itanium2 2614 1368 858
Opteron 2.4 4320 2020 1174
Core2duo 2.1
Tabla 2: Execution times ph.x (versión 4.2.1)
System 8 cores 16 cores 32 cores
Xeon 2504 1348 809
Itanium2 2968 1934 1391
Opteron 2.4 6240 3501 2033
Core2duo 2.1

More information

ESPRESSO Web page.

On Line Documentation.

ESPRESSO Wiki.