1.1.2 types of processor
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what is the difference between concurrent processing and parallel processing
parallel is pslitting up tasks between core and processing them simultaneously concurrent processing is processing tasks seemingly at the same time dedicate processor time to the tasks
describe two limitations of parallel processing [4]
An algorithm must be suitable for parallel processing - unequal process time may mean some processors are unused. more complex CU - more time spent managing the processes potential deadlock - one process requires the output of another
other than graphics give two examples where GPU is better than CPU
Machine learning - calculations need to be done on large dat sets modelling calculations
compare CISC and RISC [4]
CISC has much more modes of addressing memory Has much more instructions multiple FDE cycles per instruction RISC 1 to 1 relationship with instructions and FDE cycles complex instructions can be made with multiple simple instructions can do pipelining becuase all instructions are uniform
what devices are RISC processors used
low power devices like phones smart TV Tablets
Pros of RISC
RISC uses a reduced instruction set so needs less complex hardware So uses less power