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q what do you mean by communication trafficcommunication traffic offers a pictorial view of communication traffic in interconnection network with
q what is visualisation - search based toolsvisualization is a common method in contract to search based tools in this scheme visual aids are
the search-based tools initially recognize problem and afterwards suitably give advice on how to correct it at expert from cray research is one of
q what is sun and nis lawthe sun and nis law is a simplification of amdahls law and gustafsons law the basic concept underlying sun and nis law is to
q analysis of amdahls lawthe conclusions of analysis of amdahls law are1 to optimize performance of parallel computers modified compilers should be
q executing a parallel algorithmmultiple processors need synchronization with one another when executing a parallel algorithm so task which is
q what is parallel balance pointin order to execute parallel algorithm on parallel computer k processors are necessary it should be noted that given
cost involved in inter-processor communicationbecause data is assigned to too many processors in a parallel computer whilst executing a parallel
q uneven load distribution in parallel computersin parallel computers the problem is split in sub-problems in addition is assigned for computation to
performance metrics arent able to attain a linear curve in comparison to increase in number of processors in parallel computer the main reason for
q what is multi-threaded unix kernelmulti-threaded unix kernel we know threads are light-weight processors demanding minimal state information
q explain about floating-executive modelfloating-executive model the master-slave kernel model is too restrictive in sense that only one of
q what is master slave kernelmaster slave kernel in this model just one of processors is assigned as master the master is in charge for subsequent
the unix operating system for a multiprocessor system has a number of extra features as compared to normal unix operating system lets first
q explain about asynchronous message passingin asynchronous message passing message transmitting and receiving arent synchronized in space and time
q what is synchronous message passingin synchronous message passing is executed on synchronous communication network in that case sender and
q show the process of message passingthe subsequent issues are determined by system in process of message passing1 whether receiver is prepared
q types of messagesthe messages can be of many types a specific field of all messages may be reserved to signify message type the message
in a multicomputer system the computational load amid different processors should be balanced to pass information between different nodes message
q explain about deadlock avoidanceto prevent deadlocks two kinds of techniques are used1 static prevention it employs p and v operators in
q explain about system deadlocka deadlock denotes to the condition when simultaneous processes are holding resources and putting off each other from
q what is the concept of locklocks are used for protected access of data in a shared variable system there are numerous kinds of locks 1
q explain about multi tasking environmentmulti tasking uses parallelism by1 pipelining functional units are pipe line mutually2 simultaneously
q explain about server synchronizationserver synchronization it updates atom by server process of requesting process in this method an atom acts as a
q define optimistic synchronizationoptimistic synchronization this method too updates atom by requester process however sole access is granted after