随着人工智能大模型训练与推理业务的快速发展,智算中心面临算网协同调度的新挑战。为优化分布式智算Ring Allreduce业务的部署问题,首先,通过扩展传统波平面,开发了算力波平面技术,实现了算力与网络资源的一体化虚拟管理。然后,基于算...随着人工智能大模型训练与推理业务的快速发展,智算中心面临算网协同调度的新挑战。为优化分布式智算Ring Allreduce业务的部署问题,首先,通过扩展传统波平面,开发了算力波平面技术,实现了算力与网络资源的一体化虚拟管理。然后,基于算力波平面,提出了一种高效路由、波长、算力和时隙分配(routing,wavelength,computing power and time slot assignment,RWCTA)算法用于环规约(Ring Allreduce)业务部署。仿真结果表明,与传统基于波平面的部署算法相比,基于算力波平面的RWCTA算法能有效降低62.4%的总业务完成时间和54.5%的平均业务计算时间。展开更多
A ring R is called a GVNL-ring if a or 1-a is π-regular for every a∈R,as a common generalization of local and π-regular rings.It is proved that if R is a GVNL ring,then either(1-e)R(1-e) or eRe is a π-regular ring...A ring R is called a GVNL-ring if a or 1-a is π-regular for every a∈R,as a common generalization of local and π-regular rings.It is proved that if R is a GVNL ring,then either(1-e)R(1-e) or eRe is a π-regular ring for every idempotent e of R.We prove that the center of a GVNL ring is also GVNL and every abelian GVNL ring is SGVNL.The formal power series ring R[x] is GVNL if and only if R is a local ring.展开更多
The evolution of threats and scenarios requires continuous performance improvements of ballistic protections for armed forces.From a modeling point of view,it is necessary to use sufficiently precise material behavior...The evolution of threats and scenarios requires continuous performance improvements of ballistic protections for armed forces.From a modeling point of view,it is necessary to use sufficiently precise material behavior models to accurately describe the phenomena observed during the impact of a projectile on a protective equipment.In this context,the goal of this paper is to characterize the behavior of a small caliber steel jacket by combining experimental and numerical approaches.The experimental method is based on the lateral compression of ring specimens directly machined from the thin and small ammunition.Various speeds and temperatures are considered in a quasi-static regime in order to reveal the strain rate and temperature dependencies of the tested material.The Finite Element Updating Method(FEMU)is used.Experimental results are coupled with an inverse optimization method and a finite element numerical model in order to determine the parameters of a constitutive model representative of the jacket material.Predictions of the present model are verified against experimental results and a parametric study as well as a discussion on the identified material parameters are proposed.The results indicate that the strain hardening parameter can be neglected and the behavior of the thin steel jacket can be described by a modeling without strain hardening sensitivity.展开更多
RING(Really Interesting New Gene)型泛素连接酶在水稻生长、发育、生物和非生物胁迫中发挥着重要作用。根据水稻基因组信息,利用RT-PCR技术从粳稻日本晴中克隆了OsRING6基因的CDS序列。该基因的全长c DNA为1355 bp,包括长度为918 bp的...RING(Really Interesting New Gene)型泛素连接酶在水稻生长、发育、生物和非生物胁迫中发挥着重要作用。根据水稻基因组信息,利用RT-PCR技术从粳稻日本晴中克隆了OsRING6基因的CDS序列。该基因的全长c DNA为1355 bp,包括长度为918 bp的CDS,编码一个含305个氨基酸的蛋白,预测该蛋白的分子量和等电点分别为32.96 k D和3.49,与籼稻(CT832014)和短花药野生稻(XM_006659599)中同源蛋白的序列相似性最高,分别为97%和83%。IPTG诱导表达的MBPOsRING6重组蛋白的表观分子量约为100 k D,比理论值76 k D大。启动子元件分析表明,其含有与干旱胁迫、光反应、ABA和GA信号传导相关的调控元件。Real-time PCR结果表明,该基因在水稻根、茎、叶、叶鞘、花和种子中都有表达,在萌发后4 d的种子中表达量最高,花中的表达量最低,且该基因的表达受到盐和ABA的诱导及PEG的抑制。OsRING6基因的克隆为水稻抗逆分子育种和功能分析提供了优质基因资源。展开更多
文摘随着人工智能大模型训练与推理业务的快速发展,智算中心面临算网协同调度的新挑战。为优化分布式智算Ring Allreduce业务的部署问题,首先,通过扩展传统波平面,开发了算力波平面技术,实现了算力与网络资源的一体化虚拟管理。然后,基于算力波平面,提出了一种高效路由、波长、算力和时隙分配(routing,wavelength,computing power and time slot assignment,RWCTA)算法用于环规约(Ring Allreduce)业务部署。仿真结果表明,与传统基于波平面的部署算法相比,基于算力波平面的RWCTA算法能有效降低62.4%的总业务完成时间和54.5%的平均业务计算时间。
基金supported by the grant of National Natural Science Foundation of China(10971024)the Nanjing University of Posts and Telecommunications(NY209022)
文摘A ring R is called a GVNL-ring if a or 1-a is π-regular for every a∈R,as a common generalization of local and π-regular rings.It is proved that if R is a GVNL ring,then either(1-e)R(1-e) or eRe is a π-regular ring for every idempotent e of R.We prove that the center of a GVNL ring is also GVNL and every abelian GVNL ring is SGVNL.The formal power series ring R[x] is GVNL if and only if R is a local ring.
基金co-funded by the Direction Générale de l'Armement (DGA)the French-German Institute of Saint Louis (ISL)。
文摘The evolution of threats and scenarios requires continuous performance improvements of ballistic protections for armed forces.From a modeling point of view,it is necessary to use sufficiently precise material behavior models to accurately describe the phenomena observed during the impact of a projectile on a protective equipment.In this context,the goal of this paper is to characterize the behavior of a small caliber steel jacket by combining experimental and numerical approaches.The experimental method is based on the lateral compression of ring specimens directly machined from the thin and small ammunition.Various speeds and temperatures are considered in a quasi-static regime in order to reveal the strain rate and temperature dependencies of the tested material.The Finite Element Updating Method(FEMU)is used.Experimental results are coupled with an inverse optimization method and a finite element numerical model in order to determine the parameters of a constitutive model representative of the jacket material.Predictions of the present model are verified against experimental results and a parametric study as well as a discussion on the identified material parameters are proposed.The results indicate that the strain hardening parameter can be neglected and the behavior of the thin steel jacket can be described by a modeling without strain hardening sensitivity.
文摘RING(Really Interesting New Gene)型泛素连接酶在水稻生长、发育、生物和非生物胁迫中发挥着重要作用。根据水稻基因组信息,利用RT-PCR技术从粳稻日本晴中克隆了OsRING6基因的CDS序列。该基因的全长c DNA为1355 bp,包括长度为918 bp的CDS,编码一个含305个氨基酸的蛋白,预测该蛋白的分子量和等电点分别为32.96 k D和3.49,与籼稻(CT832014)和短花药野生稻(XM_006659599)中同源蛋白的序列相似性最高,分别为97%和83%。IPTG诱导表达的MBPOsRING6重组蛋白的表观分子量约为100 k D,比理论值76 k D大。启动子元件分析表明,其含有与干旱胁迫、光反应、ABA和GA信号传导相关的调控元件。Real-time PCR结果表明,该基因在水稻根、茎、叶、叶鞘、花和种子中都有表达,在萌发后4 d的种子中表达量最高,花中的表达量最低,且该基因的表达受到盐和ABA的诱导及PEG的抑制。OsRING6基因的克隆为水稻抗逆分子育种和功能分析提供了优质基因资源。
