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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
q what do you mean by lock synchronizationlock synchronization in this method contents of an atom are updated by requester process and sole access is
q describe about sole access protocolthe atomic operations that have conflicts are handled with the help of sole access protocol the method used for
q explain execution-modes of a multiprocessorexecution-modes of a multiprocessor several modes of multiprocessing comprise parallel execution of
q define wait protocolthe wait protocol is used for resolving conflicts that arise due to some multiprocessors requiring same resource there are 2
q learn synchronization principlesto learn synchronization subsequent dependencies are recognized i data dependency these are raw waw and war
in multiprocessing several processors require to communicate with one another so synchronisation is needed between them the correctness and
q illustration of parallel programming environmentslets discuss illustrations of parallel programming environments of intel paragaon xps and cray
q why we need parallel programming languagesthe parallel programming languages are created for parallel computer environments these are developed
q explain about parallel programming environmentthe parallel programming environment comprises of a debugger an editor performance evaluator