Firefly (computer program)

<p>Firefly, formerly named PC GAMESS, is an <a href="/facts/Ab_initio_quantum_chemistry_methods/Rwuu2At1">ab initio</a> <a href="/facts/Computational_chemistry/KyuCgRV3">computational chemistry</a> program for <a href="/facts/Intel/SMF0gJJX">Intel</a>-compatible <a href="/facts/X86/Kypq5fgu">x86</a>, <a href="/facts/X86-64/cyWvUFlP">x86-64</a> <a href="/facts/Microprocessor/Fx9CaQht">processors</a> based on <a href="/facts/GAMESS_(US)/osohnweB">GAMESS (US)</a> sources. However, it has been mostly rewritten (60-70% of the code), especially in platform-specific parts (<a href="/facts/Memory_allocation/vthLkUpz">memory allocation</a>, disk <a href="/facts/Input%2foutput/WQTE8Jas">input/output</a>, <a href="/facts/Computer_network/3w5RM99p">network</a>), <a href="/facts/Mathematic/pxTouaz4">mathematic</a> functions (e.g., <a href="/facts/Matrix_(mathematics)/qa8FI4ko">matrix</a> operations), and <a href="/facts/Quantum_chemistry/H9AXV0lx">quantum chemistry</a> methods (such as <a href="/facts/Hartree%25E2%2580%2593Fock_method/U9mlRWVR">Hartree–Fock method</a>, <a href="/facts/M%25C3%25B8ller%25E2%2580%2593Plesset_perturbation_theory/AuKWfsI2">Møller–Plesset perturbation theory</a>, and <a href="/facts/Density_functional_theory/wwz4Gqdg">density functional theory</a>). Thus, it is significantly faster than the original GAMESS. The main maintainer of the program was Alex Granovsky. Since October 2008, the project is no longer associated with <a href="/facts/GAMESS_(US)/osohnweB">GAMESS (US)</a> and the Firefly rename occurred. Until October 17, 2009, both names could be used, but thereafter, the package should be referred to as Firefly exclusively.
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Firefly (computer program) open-in-new

Firefly (computer program)