This paper addresses the issue of collapsing dependent floatingpoint operations. The presentation focuses on studying the dataflow graph of benchmark involving a large number of floating-point instructions. In particular, it focuses on the relevance of new floating-point operators performing two dependent operations which are similar to “fused multiply and add”. Finally, this paper examines the...

Program activity graphs can be constructed from timestamped traces of appropriate execution events. Information about the activities on the k longest execution paths is useful in the analysis of parallel program performance. In this paper, four algorithms for finding the near–critical paths of program activity graphs are presented and compared, including an efficient new algorithm that utilizes...

Modern processors come close to executing as fast as true dependences allow. The particular dependences that constrain execution speed constitute the critical path of execution. To optimize the performance of the processor, we either have to reduce the critical path or execute it more efficiently. In both cases, it can be done more effectively if we know the actual instructions that constitute ...

Critical Path Profiling is a technique that provides guidance to help programmers try to improve the running time of their program. However, Critical Path Profiling provides only an upper bound estimate of the improvement possible in a parallel program execution. In this paper, we present a new metric, called Slack , to complement Critical Path and provide additional information to parallel pro...

objective: yield components and genetic contribution have the most important in final yield and breeding programs of crop plants. for this purpose, 20 varieties of grapevines with russia origin were evaluated in urmia and takestan research station (under full irrigation and drought stress). methods: twenty grapevine genotypes were evaluated in urmia and takestan research station (under full irr...

conclusions by preventing unnecessary termination of pregnancy and keeping fit, the chances of lbw can be reduced. background lbw rate is one of the most important health indices in every society. it reveals mothers and their new-born infants' health. objectives our aim, in the present paper, was to present a new statistical framework for analysis based on path analysis techniques. patients and...

T In this paper, we propose an approach based on hardware-software partitioning to minimize logic area of a SOPC circuit "System on a Programmable Chip". This approach minimizes the SOPC area while satisfying a time constraint. To minimize this area, we propose an algorithm to determine the critical path with the largest number of hardware tasks in a given data flow graph. Once these hardware t...