Research on Automatic Mapping Method of Reconfigurable Block Cipher Instruction Set Processor
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摘要: 计算资源与寄存器资源分配是可重构处理器自动并行映射的重要问题，该文针对可重构分组密码指令集处理器的资源分配问题，建立算子调度参数模型和处理器资源参数模型，研究了分组密码并行调度与资源消耗之间的约束关系；在此基础上提出基于贪婪思维、列表调度和线性扫描的自动映射算法，实现了分组密码在可重构分组密码指令集处理器上的自动映射。通过可用资源变化实验验证算法并行映射的有效性，并对AES-128算法的映射效果做了横向对比验证算法的先进性，所提自动映射算法对分组密码在可重构处理中的并行计算研究有一定的指导意义。
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关键词:
- 可重构分组密码指令集处理器 /
- 自动映射 /
- 资源分配 /
- 列表调度 /
- 线性扫描
Abstract: The allocation of computing resources and register resources is an important issue for automatic parallel mapping of reconfigurable processors. In this paper, for the resource allocation of reconfigurable block cipher instruction set processors, an operator scheduling parameter model and processor resource parameter model are established, and the constraint relationship between the parallel scheduling of block ciphers and resource consumption is studied; Consequently, an automatic mapping algorithm based on greedy thinking, list scheduling and linear scanning is proposed to realize the block cipher atuomatic mapping on the reconfigurable block cipher instruction set processor. The experiment verifies the effect of the algorithm’s parallel scheduling under different resource constraints, and the contrast of AES-128 algorithm’s mapping effect is made to verify the progress of the algorithm, which obtains certain significance for the parallel computing research of block ciphers in reconfigurable processing. -
表 1 自动映射算法
输入：serial_code //分组密码串行程序代码 输出：映射结果 Initial_schdule(list) //对结点进行调度 { for each node vi in list; Sdi = ASAP(vi); Ssi = Sdi – ALAP(vi); Endfor } Select_ReadyQ(list) { for each node vi in list; merge_sort(list,Ssi); //进行归并排序 endfor select the vi with smallest Sdi; vi $ \to $ ready_queue; //将启动时间最早的结点放入就绪队列 } Mapping_sequencing (list) //对就绪队列中的点按照type和order排序，将同类型算子结点排列在一起 { for each node vj in list Spj = TPj–Oj; endfor merge_sort(list, Spj); // 进行归并排序 return list; } BEGIN compiler_infrastructure(serial_code)$ \to $nodelist; //利用编译基础设施预处理串行代码 S_Q = Initial_S(nodelist); //对结点进行初始调度 while (S_Q$ \ne \varnothing $) { R_Q = Select_ReadyQ(S_Q); //生成就绪队列 M_Q = Mapping_sequencing (R_Q); //将同类型结点放一起 for each vk in M_Q if(ORFU(vk)> RFUN or OREG(vk)>REGN); Sdk = Sdk –1; vk$ \to $S_Q; else update lifetime_table; Allocate_RFU(vk); Allocate_Reg (vk,lifetime_table); delete vk in M_Q; endif endfor } END 
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