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chrinide木蟲 (正式寫手)
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[交流]
【分享】Quantum ESPRESSO 4.2rc 發(fā)布 已有4人參與
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Quantum ESPRESSO 4.2rc 發(fā)布,GWW正式發(fā)布,還有很多新功能... http://qe-forge.org/frs/?group_id=10 |

榮譽版主 (文壇精英)

金蟲 (著名寫手)
木蟲 (小有名氣)
半導體納米材料

金蟲 (著名寫手)
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Version 4.2 of the Quantum ESPRESSO distribution is available for download from the website http://www.quantum-espresso.org . This release contains the following improvements over previous versions: * HSE exchange-correlation functionals (courtesy of Hannu-Pekka Komsa) * New package GWW for GW calculations with Wannier functions (courtesy of Geoffrey Stenuit and Paolo Umari) * Grid parallelization for the phonon code * Improved mixed openMP-MPI parallelization * Martyna-Tuckerman algorithm for isolated systems plus other minor improvements and bug fixes (see file Doc/release- notes). Everybody who is using the Quantum-ESPRESSO distribution is encouraged to upgrade and to report problems to the mailing list. The Quantum ESPRESSO group |
榮譽版主 (文壇精英)
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簡介 ESPRESSO意為“op(E)n (S)ource (P)ackage for (R)esearch in (E)lectronic (S)tructure, (S)imulation, and (O)ptimization”。Quantum-ESPRESSO軟件包基于密度泛函理論,使用平面波基組和贗勢。它包含以下代碼: PWscf:電子結構,結構優(yōu)化,分子動力學,振動特性和介電特性。 FPMD:Car-Parrinello可變晶胞的分子動力學程序。它基于R. Car和M. Parrinello的原始代碼。 CP:Car-Parrinello可變晶胞的分子動力學程序。它基于R. Car和M. Parrinello的原始代碼。 PWgui:產生PWscf輸入文件的圖形用戶界面。 atomic:用于原子計算和產生贗勢。 功能 基態(tài)計算: 1. 自洽場總能量,力,和張量。 2. 使用迭代對角技術,阻尼動力學,和共軛梯度進行能量最小化。 3. Kohn-Sham軌道。 4. Gamma點,k點取樣,各種展寬技術(Fermi-Dirac,Gaussian,Methfessel-Paxton,Marzari-Vanderbilt)。 5. 模守恒贗勢和超軟贗勢,PAW。 6. 交換關聯(lián)泛函:LDA,GGA(PW91,PBE,B88-P86,BLYP),meta-GGA,精確交換泛函,雜化泛函。 7. LDA+U。 8. Berry相極化。 9. 自旋軌道耦合和非共線磁性。 10.最大局域化函數(shù)。 響應特性(密度泛函微擾理論): 1. 聲子頻率,以及任意波矢的本征矢。 2. 完全聲子色散,實空間的原子間力常數(shù)。 3. 平移和轉動的聲音求和規(guī)則。 4. 有效電荷和色散張量。 5. 電-聲相互作用。 6. 三階非諧聲子壽命。 7. 紅外和Raman交叉部分。 8. EPR和NMR化學位移。 從頭分子動力學: 1. Car-Parrinello分子動力學。 2. Born-Oppenheimer分子動力學。 結構優(yōu)化: 1. 使用準牛頓BFGS條件的GDIIS。 2. 阻尼動力學。 3. 離子共軛梯度最小化。 4. 投影速度Verlet算法。 5. 過渡態(tài)和能量最小化。 6. Born-Oppenheimer NEB。 7. Born-Oppenheimer弦動力學。 |

榮譽版主 (文壇精英)
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New in version 4.2: * Removal of duplicated and unused routines * Major reorganization of the distribution itself: external packages no longer in the repository * New package GWW for GW calculations with Wannier functions * Grid parallelization for the phonon code, code cleanup * Better OpenMP+MPI parallelization * Real-space PP non-local projectors (experimental) * Martyna-Tuckerman algorithm for isolated systems * Better q=>0 limit for Exact-Exchange calculations * HSE functional * Bug fixes and output cleanup for cp.x autopilot * Parallel symmetrization in G-space Fixed in version 4.2: * A few occurrences of uninitialized variables and of incorrect INTENT * The value of DFT set in input (instead of DFT read from PP files) was ignored by all codes using the data file (phonon, postprocessing, etc) * PW: glitches in restart (now it works also with exact exchange) * D3: real-space contribution to the Ewald term was incorrect, since the initial release. Since such term is usually very small, the error was also very small. Also: preconditioning was not properly implemented, causing unnecessary slow convergence Incompatible changes in version 4.2: * changed defaults: startingwfc='atomic+random' in pw.x (instead of 'atomic') * calculations 'fpmd', 'fpmd-neb' removed from CP: use 'cp' or 'neb' instead * calculation 'metadyn' and related variables removed from PW and CP: use the "plumed" plugin for QE to perform metadynamics calculations * nelec, nelup, neldw, multiplicity variables removed from input: use tot_charge and tot_magnetization instead * calculation of empty Kohn-Sham states, and related variables, removed from cp.x: use option disk_io='high' in cp.x to save the charge density, read the charge density so produced with pw.x, specifying option "calculation='nscf'" or "calculation='bands'" * "xc_type" input variable in cp.x replaced by "input_dft" (as in pw.x) * ortho_para variable removed from input (CP); diagonalization='cg-serial', 'david-serial', 'david-para', 'david-distpara', removed as well Use command-line option "-ndiag N" or "-northo N" to select how many processors to use for linar-algebra (orthonormalization or subspace diagonalization) parallelization. Note that the default value for ndiag/northo has changed as well: 1 if ScaLAPACK is not compiled, Nproc/2 if Scalapack is compiled * "stm_wfc_matching" removed from pp.x |

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