Design and implementation of UDLC: Unified Job-Description Language on Chemical-Grid

More and more chemists carry out scientific research using computation on the basis of chemical-grid platform, there are lots of chemical software in the grid, but Most chemical software uses different script languages to describe jobs, so it is difficult for any single chemical description language to be used as an uniform standard in the grid environment. We propose UDLC (Unified Job-Description Language on Chemical-Grid), which can not only easily describe the computational chemistry related knowledge, but also meet the requirements of chemical scientific calculation in the grid environment, it can be used as a common language to describe the chemical problems. This paper would use EBNF and ANTLR to design and implement UDLC grammar rules, which based on a hierarchical model of clear knowledge of chemistry, this implementation is helpful for chemist to use the grid to solve chemical problems easily.