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We have a system Lx = b, b ̸= 0 where L is a 100000 × 100000 lowertriangular matrix and b is a 100000 × 1 vector. The computer system on which we would like to solve this system has two constraints - one, we cannot store the matrix L in memory, but can only store individual rows of the matrix in memory, and two, writes into memory are much more expensive than reads from memory. Can you write an algorithm to solve this system respecting the first constraint and ensuring that you make as few writes to memory as possible.
Submitted by A S. Jun. 21, 2023 06:18 a.m.
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6 comments
Julie B.
March 18, 2023
This vid is totally on point for good education
Christopher A.
July 16, 2023
super thankful for the clear solution, mr n youre awesome
Joseph P.
August 11, 2023
Thanks for simplifying that tricky concept Mr N Youre the real MVP
Courtney F.
September 16, 2023
THANKS FOR BREAKING DOWN THAT COMPLEX ALGORITHM, MR N!
Stephanie F.
October 20, 2023
Thx for making that algorithm crystal clear Mr. N! You rock
Jeremy A.
October 22, 2023
Grateful for the detailed explanation Mr N Youre a lifesaver