Blog posts
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My time management tip #1 – Pomodoro Technique
Since the pandemic hit the states back in February this year, I’ve been working remotely from home (such a blessing and a serious privilege). Working from home underscores the importance of time management, especially for someone like me who can either deeply fall into work mode for hours and hours (never breaking eyes away from…
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Daily Review – Day ending in 2020/08/27
What’s your chief aim for today Learning that while I’m on call for my team, I very rarely hit my targets for the day (see section on “How did yesterday go”). Not only that, but I’m drained by the end of the day, little to no CPU cycles left for studying (although this window of…
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Thinking out loud – Not fully understanding virtually indexed physically tagged (VIPT) details
I’m really struggling to intimately understanding virtually index privately tagged concept. From a high level, I get that VIPT is an optimization technique, parallelizing both the translation of virtual addresses to physical and the cache look up of the physical address. This seems impossible at first since the cache depends on the physical frame number…
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Daily Review – Day ending in 2020/08/26
What’s your chief aim for today Writing Write and publish one piece on this blog Graduate School Complete typing up answers for assignment #1 Edit answers for pre-lab assignment Watch and take notes on second module in advanced operating systems (Lesson 2) Organization Review Inbox items sitting in OmniFocus Quickly glance over project Work Continue…
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OS Structure Overview
In the context of an operating system, what does structure even mean and why is it important? Structure determines how the operating system serves application in regards to the underlying hardware and how it balances the following qualities: protection, performance, flexibility, scalability, agility, and responsiveness. To obtain the above qualities, several designs exist including monolithic…
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How to go beyond physical memory ?
How can the OS make use of a larger, slower device to transparently provide the illusion of a large virtual address space? Overview Why try and create a large virtual address space, a virtual address space that is larger than the physical amount of address memory installed on the system? Well, the illusion of a…
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Daily Review – 2020/08/26
What’s your chief aim for today Write and publish one piece on this blog Review Inbox and Important projects sitting in OmniFocus (this was a miss yesterday) Put in 1 hour study session before and after work for advanced operating systems (seems unlikely since I woke up at 05:00 instead of 04:30 and made the…
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Daily Review – 2020/08/25
What’s your chief aim for today Recover from waking up from 03:00 AM from being woken up from operational issue Write and publish one piece on this blog Review Inbox and Important projects sitting in OmniFocus Put in 1 hour study session before and after work for advanced operating systems Chip away at writing one-pager…
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Operating Systems – Memory Virtualization – Paging
In my other blog post on memory segmentation, I talked about diving the process’s virtual address space into segments: code, heap, stack. Memory segmentation is just one approach to memory virtualization and another approach is paging. Whereas segmentation divides the address space into segments, paging chops up the space into fixed-sized pieces. Each piece is…
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Word of the day “Notwithstanding”
Today’s word of the day is “Notwithstanding”. Definition – preposition – in spite of Example Sentences notwithstanding the evidence, the consensus is that the jury will not reach a verdict1 Notwithstanding his nervousness, the young man looked his interviewer directly in the eyes as he answered the questions2 His nervousness notwithstanding , the…
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Fear is a Guide
While driving to my tennis lesson, I listened to Jared’s (my guitar instructor) video on “Fear is a Guide” and I must say that I love the new direction he is taking on his YouTube channel. He was previously focusing on delivering guitar lessons. Now, he’s honing on what is important to him including song…
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Memory segmentation
This blog post contains notes I took on memory segmentation, from “OS in Three Easy Pieces Chapter 16”, one strategy for implementing virtual memory systems. In the next blog post, I’ll cover a different approach: paging. 16.1 Segmentation: Generalized Base / Bounds Summary We use segmentation to divide the virtual address space into three distinct…
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Weekly Review – 2020/08/17 – 2020/08/23
Writing Wrote and published close to a dozen blog posts over the past week, creating a new cadence of bite-sized posts instead of large pieces that sit in draft mode Feeling more confident about my digital organization system, storing all my books and articles and journals consistently, naming them author_year and storing them into DevonThink…
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My classmates syllabus in excel form
One of my virtual class mates took the poorly formatted syllabus living on Canvas and converted the document into a beautifully organized excel sheet (above). I appreciate him sharing this screenshot since it saves me at least 15 minutes from copying and pasting and wrestling with inevitable formatting issues. On top of that, I now…
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Snapshotting my understanding before tackling homework assignment #1
Before tackling the homework assignment, I’m going to rate myself on the questions (below), from a scale of 1 (no freaking clue) to 5 (truly understand). The point of this exercise that I just made up myself is that I want to capture my understanding (or lack thereof) at a moment and time. Why do…
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Little Elliott has found her voice
[fvplayer id=”1″] Just a short little video milestone of Elliott finding her voice, which sounds raspier than usual since I think she may have overdone it yesterday, making this “ah ah ah” noise for 14 hours.
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Advanced Operating System Notes (File Systems)
Although I’ve covered file systems in previous courses, including graduate introduction of operating systems, I really enjoy learning more about this concept in a little depth. The file system’s module is packed with great material, the material introducing a high level introduction of file system and then jumps into the deep end unveils what an…
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My First Research Paper: COVID19 and the impact on higher education
Abstract—This research paper explores the impact of the COVID-19 health crisis on the education sector by unpacking the challenges and successes of the forced migration of professors and their curricula onto online learning platforms. Quantitative research was conducted in the form of a domestically focused survey to determine the success of those teaching models and…