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jarnold

291 karma · joined March 16, 2008

jarnold@gmail.com

Now Architect at NVIDIA Was CEO, SwiftStack - http://swiftstack.com acq. by NVIDIA Was building infrastructure clouds at Coudscaling. Was head of engineering at Engine Yard. Was at Yahoo!

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jarnold··on Ask HN: What's your note-taking methodology?
Very similar to what I have done. It's very powerful to have a lot of notes in one system like Evernote. Mine goes back to 2006. Likewise, I don't use it for document collaboration or any of the sharing functions – just personal notes synced.

Nowadays I create one note per day. I feel like I take a lot of notes – 500-4,000 words a day.

What balloons the size is I often find myself more in a transcription mode when I'm having critical conversations or interviewing people. Remote work makes this easier.

I've also developed a small number of short-hand annotations. eg. "(" for my inline thoughts, "[" for questions or topics I want to get to in a meeting.

jarnold··on Building a high quality audio system [video]
This isn’t a documentary about hi-if equipment. It’s a story about this man’s obsession. The sacrifices and guilt now realized. Nearing the end of his life with a terminal illness — it’s the reflection at the end that causes pause. How are your obsessions impacting you? Are they tearing you away from your family or friends? Are you happy with those choices made?
jarnold··on Meshroom – Open-source photogrammetry software
Fun software, easy to use. Was able to scan my kid's stuffed animal and reproduce a small 3d-printed version of it.
jarnold··on Nvidia to Acquire SwiftStack
Founder here. Big announcement for us and we are all excited to join NVIDIA.
jarnold··on Boring but possibly interesting audio for going to sleep
I just got the Trekz Titanium, put them on my head backwards for the first time last night. Works great. Nothing in the ear – wireless so no cords to get tangled up in. Super flexible so I'm not afraid of breaking them.
jarnold··on I Have Read Prop F
I can't +1 one this comment enough.

Both have track records in office and the choice can't be more clear. I'm shocked that anyone is supporting Peskin after his term of obstructionism. Esp. in contrast to what Christinsen has accomplished in her recent term.

jarnold··on Tell HN: Entrepreneurs, make sure you are getting guaranteed wins in life
Totally agree. Having kids is a window in life that is much Shorter than the window for doing a startup. I was a bit crazy and had two little ones when I started and a third not too long ago. I know many others who have done both as well.
jarnold··on The Secret Life of Yo-Yos
I had the fortune of getting wrapped up in the Chico yoyo scene of the late 90's. It was amazing to see the transformation around that time. There were only one or two metal, ball berring yoyos on the market at the time. Got to help teach kids and was enlisted by Prima (game guide publisher) to do a book on yoyo play too. Good times...
jarnold··on Entrepreneurs anonymous
I wholeheartedly disagree. A much more important factor is how ready you are and what kind of support structure you have to start out with. If that is later in a career (and when you have a family) so be it. It's the right time.

Founded current company with two young kids and just had a third. Pulling together the right team way more of a factor than having a family.

jarnold··on Getting Physical - Seagate Kinetic Drive Hardware
I have a good feeling that there will be some text as well. :) FWIW we imagine that field replacements will be less common and simply run with 'dead drives' will be more common.

Incidentally, because the drive is moving to a key/value model vs. sectors it means that the useful life of the device will be much better. This is because the device can manage bad sectors itself vs having that be the responsibility of the filesystem. So the drive would just report lower % capacity.

jarnold··on Getting Physical - Seagate Kinetic Drive Hardware
Well given that the device will start asking for a DHCP address when it is powered on, it will probably not do anything.
jarnold··on Getting Physical - Seagate Kinetic Drive Hardware
Good question. That sounds like a reasonable idea for quickly identify when looking for a replacement in the spares closet.
jarnold··on Getting Physical - Seagate Kinetic Drive Hardware
This is a good thing for a couple of reasons. First it allows equipment manufacturers to build chassis with the same drive trays that are already in production. Second, it that from a drive assembly standpoint, the same build and testing equipment can be used. This should speed development and manufacturing quality.

Is the concern more from an ergonomic perspective, that someone in a data center may plug in a drive into the wrong system?

jarnold··on Matt Groening's Artwork for Apple
Cool! I used to have that dorm poster in my dorm. Does that make me old?
jarnold··on The Next Microsoft
My first response was-- hum... I should ping this guy and see if he's free for some branding work.
jarnold··on Ask HN: Who Is Hiring? (June 2012)
FULLTIME Python Engineers, Systems Engineers San Francisco (preferred) SwiftStack - http://swiftstack.com

SwiftStack is building out large-scale object storage systems based on the OpenStack Swift project. Our customers are top 5 web properties and fortune 50 enterprises who want something that works like AWS S3 / Rackspace Cloud Files -- but provide it as an in-house offering. SwiftStack provides a distribution of OpenStack Swift and controller software to manage a deployment.

We are looking for engineers at all levels of the 'stack'. Python is the lingua-franca. Our management controller uses django, zeromq, graphite and all the math required to run a distributed storage system. To build the runtime component we are well versed in linux tuning, systems programming, load balancing, authentication, and filesystems.

We're big contributors to open source. Not just in OpenStack, but also the tools we use to deliver our product. Check out our github page: https://github.com/swiftstack

Please email me at joe@swiftstack.com if you're interested. Thanks!

jarnold··on CloudStack going Apache 2
I'm biased here -- but I see OpenStack Swift coming out as a winner out of all of this. It's an object storage system that can span multiple cloud orchestration frameworks.
jarnold··on Don't try this at home. How credit card arbitrage funded my first company.
I actually did credit card arbitrage in one of my first startups. We discovered a niche market where online credit card transactions were charged exorbitant rates for low-volume, non-swipe monthly subscriptions. By taking on the risk ourselves we aggregated many smaller sites, and was able to become a merchant bank ourselves.

That's arbitrage to me.

jarnold··on Learn Python The Hard Way 2nd Edition Released
I would still recommend it, even to those who know how to program. A lot of the book is just non-stop typing as fast as you can. The benefit to me was how it improved my 'muscle memory' when actually sitting down to write something on my own. There was less stumbling over little things like -- "how do import a library again? 'require?' 'load?'"

As with most things, you get out of it what you put into it. For example, I wrote unit tests in one of the 'extra credit' assignments to explain a bunch of python's symbols.

jarnold··on Ask HN: riak/luwak vs openstack swift for private S3 clone?
(I'm going to have some bias here as I've done Swift deployments as well.)

One of the advantages of using something like Swift for long-term storage is it's simplicity of how data is stored on disk. Data isn't chunked up and distributed throughout a cluster. Each replica is whole and on disk. And, as notmyname, mentions there are auditors that continuously run to check for bitrot and to ensure replicas are in place. The data is extremely durable in a swift cluster if you deploy and configure everything right.

I've done most of my price modeling for petabyte-scale deployments, but it actually has good scaling-down properties as well. If you're concerned about power, 2.5" drives may be an option. Although I would avoid 'green' drives as Swift tends to keep the drives quite active (replica and integrity checks) and you won't see much benefit.

jarnold··on The Legend of Zelda Turns 25
Tell me about it. Back in the day my (future) wife and I would burn a Saturday playing.
jarnold··on The Elephants in the Agile Room
I was involved in that community for a few years. (As part of my job -- the business side it Agile.) Ultimately, I got tired of the politics of ideas, organization and labels.

What is still fun for me is trying out experiments, learning from them. Reading about others trials in how to organize teams, programming practices and deliver as much value as possible. Keeping track of elephants like these was distracting.

jarnold··on SproutCore Amber: A Report by Yehuda
This is Yehuda's m.o. -- take a framework and make it less monolithic before he extends functionality. He's done this with Merb and Rails. These have greatly improved those frameworks. I expect good things from Sproutcore.
jarnold··on Ask HN: My project IsItRails.com — what should I do?
I think there is a market for a lead generation product for niche hosting providers. Have a pay service that 'hunts' down high-traffic or newly-launched websites that fit the profile that they're looking for.

These types of apps are impossible to get done internally. But sales teams would gladly pay if t exists.

jarnold··on Ask HN: My project IsItRails.com — what should I do?
Sell the data to the sales staff of rails hosting companies. Seriously, the sales folks at these companies use this data all day long. Let me know if you want introductions.
jarnold··on Rubinius 1.0.0RC1 released
Here is the getting started page: http://rubini.us/download.html
jarnold··on Odeo Releases Twttr [2006]
I thought this was funny, "So is it pronounced twitter or twatter?"
jarnold··on Can India take on Silicon Valley as a global R&D hub?
Hiring good talent is also a difficult for startups. It's difficult to convince families that an unknown company with upside potential is a better bet than a more well-known brand.
jarnold··on Can India take on Silicon Valley as a global R&D hub?
I've worked for start-ups in Silicon Valley and for a large Internet company in Bangalore. From what I observed, a large part of the missing element were skills for new product development. The culture of development is rooted in large-scale projects. Large plans. Big budgets. Huge teams. As such, the type of product development skills for the quick-iteration that is needed for startup development isn't typical practice.

About a year back I was contacted by a CEO of an Indian development house who couldn't find enough talent to build social-media applications. He was trying to figure out if he should outsource his projects to San Francisco or Manhattan.

jarnold··on Steps to be taken to incorporate a new company in India
How much does it cost to pay an 'agent' to help it through the process?
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