When parallelizing an application, the ideal speedup is speeding up by the number of processors. this is limited by two things: percentage of the application that can be parallelized and the cost of communication. amdahl’s law takes into account the former but not the latter. a. [10] < 1.10> what is the speedup with n processors if 80% of the application is parallelizable, ignoring the cost of communication? b. [20] < 1.10> what is the speedup with 8 processors if, for every processor added, the communication overhead is 0.5% of the original execution time. c. [20] < 1.10> what is the speedup with 8 processors if, for every time the number of processors is doubled, the communication overhead is increased by 0.5% of the original execution time?

You should try to photograph people on bright sunny days because the light will be best a) true b) false

Consider a direct-mapped cache with 216 words in main memory. the cache has 16 blocks of 8 words each. it is a word-addressable computer (rather than a byte-addressable computer which we normally discuss). (a) how many blocks of main memory are there? (b) what is the format of a memory address as seen by the cache, that is, what are the sizes of the tag, cache block, and block offset fields (if they apply)? (c) to which cache block will the memory reference db6316 map?

Write a program in plp assembly that counts up by one starting from zero (or one) inside a loop and writes this value to the leds every time the value is increased. the memory address of the leds is 0xf0200000. the table below shows the meaning and an example usage of the instructions covered in the video, plp instructions for project 1. instruction example usage meaning load immediate li $t0, 8 register $t0 is set to the value, 8. store word sw $t2, 0($t1) the value in register $t1 is used as the memory address. the value in register $t2 is copied into this memory address. add addiu $t4, $t3, 29 register $t4 is assigned the sum of 29 and the value in register $t3. jump j your_label_name the program jumps to the line following the label, "your_label_name: ". label your label name: defines a label called "your_label_name: " that can be jumped to