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Submission + - Object seen in skydiver's helmetcam unlikely to be a meteorite 3

The Bad Astronomer writes: The viral video showing what looked like a meteorite falling past a skydiver made quite a splash, with many people assuming it was true. However, further analysis shows that it's also perfectly consistent with being a small (1-3 cm) rock that fell out of the parachute itself, which is a far more likely explanation.

Comment Re:Still no microSD? (Score 5, Interesting) 297

I don't think that is the main reason as Android now uses MTP to allow concurrent access to the SD card. It is my belief that one of the reasons behind the lack of any sort of SD card is the possibility of it impacting the user experience. If you put in a cheap slow SD card then the apps located there slow to a crawl. With the built in flash storage, it should run to whatever standard Google demanded. I also believe this is one of the reasons Apple refuses to include expansion capabilities, the other of course the ability to charge a huge premium on upgraded space. For the Nexus 4 the bump from 8 to 16GB is only a $50 up-charge which isn't that bad in my opinion.

Comment Re:Learning new stuff is hard (Score 1) 515

I am in a similar boat. 36, two kids, 14 and 12. They are discovering new things and really helped to increase the realm of items I was interested in. I have delved into electronics which has given me even more of a sense of how things work at a low level. I bought an old 100MHz Tek 465M scope and I was amazed as what I was able to see on screen and deduce what was happening at a low level.

I am not the youngest in my group but I am the most skilled and I take it upon myself to delve into technology that will improve our efficiency and help with stability of our systems. Really the end users don't talk to you until there is a problem.

As you grow you will also learn that if you listen well enough you will start to find out what problems a user won't tell you because they may think it is unworthy of your time. An example was that people were having hard times moving and copying files on our large clustered storage. They would mount it to their Windows box and copy it between systems this way. Using local Linux tools like cp to copy was much faster due to 10Gbit connections on the nodes.

Sadly you will find companies where old IT is entrenched and sometimes the best option is to move on.

Comment Re:Bogus study (Score 1) 357

My Samsung Galaxy S (Vibrant on T-Mobile) has been the toughest phone I own. I even managed to drop it in a pool, let it dry out and it is still working today. The gorilla glass on this phone is amazing. It lives in my pocket with no screen protect and with change, pens and sometimes keys and doesn't have any noticeable scratches. About the only thing that bothers me is that the GPS is crap, but that isn't high on my list of priorities. I will definitely go with the SGS II or the SGS 3 if that is out by the time I can upgrade late next year.

Comment Re:Building Clusters (Score 2) 264

This post is full of good information. I have been managing HPC for seismic companies for the past 8 years now. I regularly use xCAT as I find that after a few nodes automation is the way to go.

You will find that most clusters run RedHat or a variant of the OS. Most places run CentOS on the nodes and have a machine with RedHat stashed around somewhere in case a problem occurs and they need to reproduce it on a "supported" OS.

Why is there a requirement for a full blown X install? Are these machines desktop boxes or are they racked? Typically you have a thin client software installed at the cluster gateway. We use both NX and ThinAnywhere today.

Comment Re:Because its magic (Score 1) 720

I love your feed, I have been following you for quite a while on twitter. I know a lot of the tips and tricks that come up but at least once a week something new to me shows up.

I have been a systems administrator for over 10 years and I find the command line invaluable. Even the geophysicists ask me to write quick one use awk scripts to format a file into something usable.

Comment Re:The solution is well organized physical storage (Score 1) 70

While I agree for the most part I think you may be missing an important facet of a software based inventory system.

With a software based system that is kept up to date you can know without having to count physical items if you have enough parts for a particular project.

Just my quick $0.02 on the subject.

Comment The overkill solution (Score 5, Insightful) 405

Time for overkill solution number 1:

1) Buy a SIP to POTS adapter
2) Install asterisk on your Linux server (You do have a Linux server right?)
3) Create a web app, preferably Ruby on Rails, that connects to Asterisk over the management port and dials a phone number and rings it back to your home phone line
4) Profit until the system breaks and the wife wrings your neck because she can't call to make her beauty salon appointment!


Comment Re:ROCKS rocks! (Score 1) 114

A cluster is a collection of, usually, homogeneous compute nodes. They are usually split into MPI and SSI, Message Passing Interface of Single Server Image. The latter is a bunch of machines trying to emulate a single system and is not commonly found in the HPC world. You are more likely to find MPI setups where each bit of processing can be broken into smaller pieces and distributed to each node.

For a render farm you can have machines with no knowledge of each other as they can each work on a separate set of frames. If the rendered is MPI aware it can ask neighboring nodes for data.

ROCKS Clusters are MPI based but can be used as individual machines. ROCKS strength is its simplicity in managing the OS image on each of the nodes. You plug a machine into the network, flip it on, wait for ROCKS to find the MAC broadcast during PXE boot and then assign it to a predefined image group. Minutes later you have a machine installed exactly as all other nodes on the cluster are. This is sometimes vitally important as certain software may not work with a different revision of the OS.

ROCKS allows for easy management and easy expandability. If you need more compute power, plug in new nodes, collect the MACs and image.

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