Strange error from Nvidia’s apex library
apex is a mixed training library from Nvidia. I have been using it since I got an RTX3080TI GPU. A few days ago, I started to use RegNetY-32GF (I just used RegNetY models smaller than16GF previously)....
View ArticleA strange problem in RegNetY-32G
I have been using RegNetY in DongNiao for almost two years. Previously I was just using small models such as RegNetY-8G. But after having a computer with RTX-3080-TI, I started to use the biggest one...
View ArticleA strange error in BigQuery
Two days ago we met a weird error when running a select through BigQuery Python API: Error : google.api_core.exceptions.BadRequest: 400 Bad int64 value: BA1D I checked the select SQL but it doesn’t...
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View ArticleUsing pendulum in Python
pendulum is a prevalent python library in my company. For example, if I want to get the time of the previous Monday, it could be written: pendulum.today("US/Pacific").previous(pendulum.MONDAY) #...
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Books I read in the year 2022
It does not mean I just read three books in the whole year of 2022 when I just showed three books above. Although reading some short history stories and books about financial knowledge, I still think...
View ArticleA BigQuery error about the partition
We were using client.query() (from Python API of BigQuery) to insert selected data into a table with a specific partition. But the script reported errors like: google.api_core.exceptions.BadRequest:...
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Road to solve LeetCode #322
My first solution is using dynamic programming. Then I want to also try breath-first-search. The first version of my BFS: class Solution: def coinChange(self, coins: List[int], amount: int) -> int:...
View ArticleAn improvement makes the pass of LeetCode #2359
The first idea that jumped out of my mind was using Sets to track two nodes and pick up the first intersection node between these two Sets. Hence came out the first solution: from collections import...
View ArticleDivide and Conquer solution for LeetCode #494
The popular solution for LeetCode #494 is dynamic programming. But my first idea is Divide and Conquer. Although it’s not very fast, it’s another idea: from collections import Counter class Solution:...
View ArticleA tip for the time complexity of LeetCode #127
The first intuitive idea that jumps out of my mind after taking a look at LeetCode #127 is using the graph algorithm. But for building the graph first, I need to traverse the wordList by O(n2) times....
View ArticleEffectively fetch the smallest element in a heap of Python
To solve Leetcode #1675, I wrote the below code with the help of hints: import sys import heapq class Solution: def minimumDeviation(self, nums: List[int]) -> int: n = len(nums) heapq.heapify(nums)...
View ArticleUpgrade ubuntu to solve a GPU problem
After installing an RTX 2080 TI on an old-2016-desktop at the beginning of 2019, we used it to train YOLOv6 for a while. But recently the training job will occasionally hang and the GPU stops working....
View ArticleUse bits instead of set for visited nodes. LeetCode #1434
My first idea is depth-first-search: iterate all people, try to give them different hats. The solution got TLE (Time Limit Exceeded). Then as a hint from discussion forum, I started to iterate hat...
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