Data layout in a file system is the organization of data stored in external storages. The data layout has a huge impact on performance of storage systems. We survey three main kinds of data layout in traditional file ...Data layout in a file system is the organization of data stored in external storages. The data layout has a huge impact on performance of storage systems. We survey three main kinds of data layout in traditional file systems： in-place update file system, log-structured file system, and copy-on-write file sys- tem. Each file system has its own strengths and weaknesses under different circumstances. We also include a recent us- age of persistent layout in a file system that combines both flash memory and byte- addressable non- volatile memory. With this survey, we conclude that persistent data layout in file systems may evolve dramatically in the era of emerging non-volatile memory.展开更多
针对大场景虚拟现实实时漫游中速度慢、内存开销大等问题,研究了如何利用MultiGen Creator构建、优化模型,布置场景和导出配置文件;利用转换工具将OpenFlight模型打包为vsb文件以提升加载速度,结合vs2003平台,在Vega Prime API基础上进...针对大场景虚拟现实实时漫游中速度慢、内存开销大等问题,研究了如何利用MultiGen Creator构建、优化模型,布置场景和导出配置文件;利用转换工具将OpenFlight模型打包为vsb文件以提升加载速度,结合vs2003平台,在Vega Prime API基础上进行二次开发,设计了一种大场景模型实时加载算法。结果表明,该方案可以满足视景仿真的实时要求,可广泛用于数字中国、数字地球等大场景虚拟现实仿真等领域。展开更多
基金supported by ZTE Industry-Academia-Research Cooperation Funds
文摘Data layout in a file system is the organization of data stored in external storages. The data layout has a huge impact on performance of storage systems. We survey three main kinds of data layout in traditional file systems： in-place update file system, log-structured file system, and copy-on-write file sys- tem. Each file system has its own strengths and weaknesses under different circumstances. We also include a recent us- age of persistent layout in a file system that combines both flash memory and byte- addressable non- volatile memory. With this survey, we conclude that persistent data layout in file systems may evolve dramatically in the era of emerging non-volatile memory.
文摘针对大场景虚拟现实实时漫游中速度慢、内存开销大等问题,研究了如何利用MultiGen Creator构建、优化模型,布置场景和导出配置文件;利用转换工具将OpenFlight模型打包为vsb文件以提升加载速度,结合vs2003平台,在Vega Prime API基础上进行二次开发,设计了一种大场景模型实时加载算法。结果表明,该方案可以满足视景仿真的实时要求,可广泛用于数字中国、数字地球等大场景虚拟现实仿真等领域。
