An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, clo...An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable.展开更多
Ocean General Circulation Model(OGCM)is a computer simulation tool based on physical principles and mathematical equations,aiming at studying global ocean circulation and its impact on the climate system.Its diverse r...Ocean General Circulation Model(OGCM)is a computer simulation tool based on physical principles and mathematical equations,aiming at studying global ocean circulation and its impact on the climate system.Its diverse resolutions and large computational data make parallel optimization a research hotspot.In the present study,we redesign the OGCM under a unified dynamic framework of serial versions(based on an unstructured grid)for the first time with a MPI parallel algorithm.Specifically,our work mainly consists of the following two parts:(1)we first change the model from a raw serial program to a parallel program that supports communication between multiple CPU cores.(2)In response to the problem of a sharp decrease in parallel efficiency as the number of CPU cores increases in the parallel optimized mode,we optimize the grid coding of the original model and proposed a new boundary communication scheme.We conduct single-node and multi-node experiments on a multi-CPU cluster to evaluate the proposed approach.Using the original OGCM-initially limited to serial execution-as a baseline,we achieve a 175.91×speedup on 640 cores.Afterwards,we extend the parallel version to multiple nodes,with strong scaling parallel efficiency of 42.2%on 8 nodes using 320 cores.展开更多
基金Project(51274250)supported by the National Natural Science Foundation of ChinaProject(2012BAK09B02-05)supported by the National Key Technology R&D Program during the 12th Five-year Plan of China
文摘An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable.
基金supported by the National Key Research and Development Program of China(2022YFE0195900)Beijing Huairou Science City Achievement Implementation Project(Z231100006623004)+2 种基金the National Key Research and Development Program of China(2022YFC3104805)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB0500303)the GHfund A(202407011963)。
文摘Ocean General Circulation Model(OGCM)is a computer simulation tool based on physical principles and mathematical equations,aiming at studying global ocean circulation and its impact on the climate system.Its diverse resolutions and large computational data make parallel optimization a research hotspot.In the present study,we redesign the OGCM under a unified dynamic framework of serial versions(based on an unstructured grid)for the first time with a MPI parallel algorithm.Specifically,our work mainly consists of the following two parts:(1)we first change the model from a raw serial program to a parallel program that supports communication between multiple CPU cores.(2)In response to the problem of a sharp decrease in parallel efficiency as the number of CPU cores increases in the parallel optimized mode,we optimize the grid coding of the original model and proposed a new boundary communication scheme.We conduct single-node and multi-node experiments on a multi-CPU cluster to evaluate the proposed approach.Using the original OGCM-initially limited to serial execution-as a baseline,we achieve a 175.91×speedup on 640 cores.Afterwards,we extend the parallel version to multiple nodes,with strong scaling parallel efficiency of 42.2%on 8 nodes using 320 cores.
