Question

Question 10. If the Earth's atmosphere is considered to extend from the surface to 25 km, the earth's radius is 6371 km, and the atmosphere is partitioned into cells spaced 0.25 km apart, how many floating point calculations will be required to run one iteration of a global weather simulation, assuming that each cell requires 300 floating point operations? If it requires 50 cycles (iterations) of simulation to calculate the weather over the next 24 hours and a forecast is needed in 20 minutes, what must the FLOPS rating of the computing system be?

Answer 1

Answer :

No. Of operations per second = 510 GFLOPS

EXPLANATION :

Z of voline : given dats? Earth's radius a B371 km Surface Extended = 95 km Atmosphere is partitioned into cells spaced 0.95 km apart, Solution volume of sphere, TV2 Total radius of earth = radus earth & Extended surface of earth. I 6311425 = 6296 km **(6896962013) 1.988603 km² V = 1.28 xcolo cubic am If the sampling points are le om apart, there are di lomas, can hoop RW for the entire surface Each point requires point Operations, Total number of FLORA 50x300 x 4.08x6 per calculation 6. 12x60th If we wish do this 20 noinutes, 20 minutes, ($900 seconds) the number of operations per second. (5 to flops (6. 120.00h) sixo" = 510 GFLOPS la so iterations of 300 floating fo (Arg) 1300