Josef “Jeff” Sipek

Birds

Just before Thanksgiving, someone I know, someone who happens to be a little bit obsessed with taking photos of birds, asked me to take some photos of birds around the NY area. Well, I didn’t intend to actually do it, but… The day before Thanksgiving, I went outside with my camera to take some photos of the colorful leaves all over the place:

Leaves

More leaves

Even more leaves

and at one point, I ran into a gigantic turkey, I could not help but take a photo of it:

Turkey

Luna(tic)

Today, I was in my room, when my sister pointed out that the rising moon was rather big. I grabbed my camera with a 70-300mm zoom, and snapped this:

The Moon!

Not too bad considering I was at 300mm, f/5.6, and 1/2000 second shutter (aperture priority with spot metering).

Edit: I should add that I took the photo around 5pm, and the fast shutter has made the sky which was rather light seem near black.

Max Raabe & Palast Orchester

This is a bit dated, but I feel like making a note of it anyway…

On November 1st, I was told by a friend that Wikipedia article: Max Raabe was going to have a show the next day in Carnegie hall in the City. I couldn’t say no — and it was worth it. As wikipedia states: “He and his orchestra specialise in recreating the sound of German dance and film music of the 1920s and 1930s.”

I’d say that about 50% of the songs he did were in English, and the other 50% were in German. I didn’t understand the songs that were in German, but from what I figured out, they lyrics are absolutely awesome. (E.g., a song about his gorilla that lives in a villa in the zoo and is very happy because the gorilla doesn’t know about politics.)

Anyway, if you got an MP3 or some other audio format of Max Raabe, listen to it, you might enjoy it because it’s different from other music you tend to hear these days.

The trip to the city was pretty painless. Finding Carnegie hall was pretty simple. And the trip back was equally painless. Sorry, no photos.

SC07

As many of you may have noticed, I’ve been really lazy when it comes to updating this blahg of mine…so here’s a short summary of what happened over the past week at SC07. I’m sure I forgot to talk about a ton of things…feel free to leave a comment.

Friday, November 9

Pretty uneventful day…flying from JFK to Reno via LAX, checking into the hotel were the two highlights.

Saturday, November 10

We mis-read the bus schedule, and ended up taking the 6:30 shuttle to the convention center. Waking up that early was quite painful. When we got to the center, we started unpacking the nodes, rack and the TV. Compared to the other teams, we were unfortunate enough to have twelve 8-core nodes, and two 4-core nodes. Yeah, 14 nodes, an infiniband switch, a gigE switch, a TV, and the full-sized rack. That’s 18 things to unpack. Other teams had around 8 nodes and similar interconnect. Either way, we had more to set up.

The organizers of the Cluster Challenge (this is the whole thing about universities, and teams, Stony Brook being one of them - read the link for more info) were nice enough to organize a cruise on lake Tahoe for us…but the only problem with it was, that it was in the evening. So, we got to see a whole lot of big black nothing.

Majority of the Indiana University team, featuring Pikachu:

Majority of the Indiana University team, featuring Pikachu

I must admit, the pikachu hat was a great way to draw attention, I therefore propose that next year, the team looks more like this (photo courtesy of Peter Honeyman):

Pika!

Sunday, November 11

While most of Saturday was spend setting up hardware, at least half of Sunday was spend setting up software. Somehow, magically, NFS decided to stop working (I’ve been told by the NFS folks that it’s generally not NFS that breaks but something else, but I maintain that NFS is broken :) ). In our case, NFS was a major component - we went the netboot way, and had only 1 disk for the entire cluster. We exported the node root directory image, as well as the home directories over NFS over ethernet, and created a tmpfs (kind of like a ramdisk, but it grows as needed) over NFS over IP over IB. There’s probably a way to remove IP out of the equation, but we just didn’t have enough time to try everything we wanted to - like doing PXE boot over IB, removing the need for ethernet all together. (One of the visitors who stopped by our cluster told me that he does do netboot over IB.)

Stony Brook’s rack

Monday, November 12

The Cluster Challenge started at 20:00. Things got really hectic really quickly, but overall it was all fun. Once everything calmed down, we decided to start the 6-hour shifts. I went back to the hotel. At 4:13 in the morning, I got woken up by a call from the team leader asking me when I’d be back. 4:13 is waaaay too early. I decided to take a pillow and the blanket with me to the conference center.

Colorado team

About 19.5 hours later, still at the conference center, I decided to go to sleep. I didn’t feel like going back to the hotel, so I crashed on one of the couches right by our team’s rack. I hear there is a photo of me sleeping on the couch. Moral of the story: when at a conference, take a pillow and a blanket with you, it might come in handy when you decide to sleep at the conference center.

Tuesday, November 13

Shortly after noon, the entire conference center lost power for a couple of seconds (see The Register). None of the teams were using UPSes (UPSes eat up power, which was quite precious - only 26 Amps per team), all the clusters rebooted. I’ve heard that the team from Taiwan lost more than 10 hours of computation because of that.

Taiwan team

We lost only about 15 minutes wall time of computation (on 96 cores) because we just started a new job.

Taken right after the power outage (notice that the lights are still off):

Right after the power outage, it took them a while to turn back the lights

Wednesday, November 14

The competition ended at 16:00. That’s 44 hours after starting. Everyone was quite tired, but not tired enough to skip what the conference organizers have prepared for us. They rented out an entire arcade in one of the near by hotels. The arcade included a whole lot of games, including laser tag. I wish I had a photo of one of the signs at the laser tag place, because it had quite a number of grammatical mistakes.

Purdue team

Thursday, November 15

Judging/organizer station

The conference ended at 16:00. Everything got promptly torn down, and packed up in boxes. And then…*drumroll* everyone headed to a Blue Man Group show done specifically for SC07 tech badge holders (which included the folks doing the Cluster Challenge - read: us). The show was fantastic, but far too short. Next time I have a pile of PVC pipes, I’m going to have a ton of fun :)

Friday, November 16

After an hour meeting at the center to figure out what could be done better next year, everyone dispersed, and went their own ways. We went to the airport, and headed back to NY - this time via Phoenix. We got to JFK around midnight.

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