Showing posts with label Austin. Show all posts
Showing posts with label Austin. Show all posts

Tuesday, August 22, 2017

2017-08 Visit to TACC (Texas Advanced Computing Center)

After working for almost a year now on a software team that enables High Performance Computing (HPC), today, I finally saw my first super computer in person. In fact, perhaps counting it as only one super computer is a misnomer. The chips arranged in groups of machines are called clusters. Each cluster has it's own name, types of chips and purpose. However, the largest cluster of all at the Texas Advanced Computing Center (TACC) is made up of 4200 Intel(R) Knights Landing (KNL) chips and 1300 Intel(R) SkyLake (SKL) processors. This is the newly installed Stampede2 system.



Stampede2

We not only got to view Stampede2 from behind the glass, we actually got to walk down one if it's "hot aisles", or an aisle with all the backs of the machines facing in. It's "hot" because the cooling system blows cold air on the fronts of all the racks. The air becomes hot by the time it arrives at the back of the cabinets. Stampede2 takes up five and a half rows. Looking in from the back of the machine, we were able to see this rack full of Intel (R) Omni-Path switches and cabling. These specialized switches and cabling enable all of the chips in the Stampede2 cluster to communicate more quickly than over standard switches and cabling.

Omni-Path switches and cabling

Lest you think that this is all one big advertisement for Intel HPC products, we did see several other clusters, including ones with AMD and Nvidia chips. Strange but I seemed to have forgotten to take pictures of those...

The last cluster we viewed is a collaboration between a Japanese corporation, a Japanese government agency and TACC. It is an experiment to see if a super computer can be powered by solar. The solar panels are installed as a carport in the parking lot. Unfortunately, current solar panel technology doesn't provide enough power to run a super computer, even a smaller cluster like Hikari.

Checking out the solar versus grid powering Hikari






Wednesday, April 9, 2014

From door to patio

Hasta la vista, little condo!

Yesterday, I closed the bright yellow door of my condo. With suitcase so heavy that I could barely roll it and backpack and purse strung over my shoulders, I walked the two blocks to the city bus stop. The city bus dropped me at the megabus stop.  Megabus boasts seats as low as $1 (plus service charge) and free WiFi. The total cost for me to travel from Austin to San Antonio was $4.75. The WiFi, however, was less than satisfactory.
My luggage, propped up by the megabus stop sign.

Megabus dropped us in a parking lot downtown. Since Austin had taxis waiting a block away, I hadn't called ahead for a taxi to meet me in San Antonio. A generous public health professor going to the downtown University of Texas San Antonio offered to share his cab with me. Within twenty minutes, I was at the airport. Checking into my flight, I was doing pretty good conversing with the Volaris attendant in Spanish. Then he quickly rattled off a long question; and, I was lost. Thankfully, he spoke English, too. If you're traveling to Mexico, Volaris is a lower priced option that services select US cities.

The customs and immigration process in Guadalajara was quick and painless. Then, I was out the door, looking for a familiar face in the lobby. It was such a welcoming sight to see my coworker Ivan waiting for me. Outside, another coworker, Mario, was waiting with the car. These two navigated their way through rush hour traffic to the house that I would be staying at. Thankfully, my coworker Hector had talked to the owners and visited a couple potential places for me to stay. The place that Hector recommended is perfect! Both Maribel and Rosalva were waiting for me on my arrival. They showed me the large bedroom, shared bathroom, kitchen and living areas. The crowning glory is the back patio. Two other girls share the place with me.

Enjoying the back patio

Then, Ivan, Mario and I were off to Chapultepec to find some supper. Unfortunately, I was too tired and hungry last night to remember to take pictures of all we saw. There's a broad median down the middle Chapultepec. People were walking; skateboarders were showing off; and, there was a saxophonist performing. We turned off on a side street for some street tacos. I ate a lengua (tongue) taco and a vampiro (fried taco shell on bottom). The lengua was a slice of tongue. It was so tender and delicious! We also stopped by El Callejon de los Rumberos to check out the salsa dancing. It was too early in the evening for anyone to be social dancing. However, there was a salsa class going upstairs. Such energy!

On my return to the house, I met one of my roommates. She is studying to become a medical doctor. She's either at school or studying most of the day. It's going to be a nice, quiet living situation. However, I'm not used to living on a through street. It might take me a few days to get used to all the cars going by.

Charles de Gaulle in the Jardin de Francia (French Garden)

The advantage of this neighborhood is that it's within walking distance of a great trail, convenience stores and public transportation. This morning, I wandered through the French Garden, complete with statue of Charles de Gualle. On my saunter, I stopped at a fresh fruit store for some breakfast--a fresh mango and a sugary empenada. The fruit here tastes so much better than anything in the States. It's going to be a good couple of months.


Sunday, April 21, 2013

Moto GP

We arrived to the sight of the motorcycles doing jumps, spins and tricks while above us a Red Bull stunt plane barrel rolled. And, this was just the pre-race entertainment while the three classes of motorocycles warmed up around the track. Friday and Saturday were qualifying race days, earning the riders positions in the final "grid" or starting positions.
 
 
 
Moto3 started at 11. These racers ride 250cc four-stroke, one-cylinder motorcyles. Even watching these small bikes, earplugs were a welcome sound dampener. We sat along turn 15, watching the racers come off the long straight away and then executing three turns in quick succession. After approximately 10 laps, the workers around the track started waving red flags, calling all racers to stop. A racer had crashed and looked to be injured critically. The leaders started to celebrate, thinking they had won the race. However, the injured racer was cleared quickly from the racetrack; and, the remaining racers were called on to race five more laps. Celebrations ceased and the Moto3 riders took a warm up lap to warm up their tires again. The starting grid set-up matched their current positions after the last clocked lap. Strategically, the front-runner took his time riding his warm-up lap, so that he would be one of the last to arrive at the grid and would have less wait until the start. The wait cools tires. During these last five laps, we saw several examples of the "slipstream effect", where a motorcycle riding closely behind another catches the "slipstream", which pulls it in front of the other motorcycle. The front-runners at the end of the first 10 laps had been numbers 42, 25 and 39. During the beginning of the five laps, 25 slid to 6th place but managed to regain 2nd by the finish line. A very exciting race!
 
By this time, the sun was getting quite warm on the grandstand. There is no shade and no umbrellas are allowed (except for the racers, who have umbrella girls to shade them while they wait in the grid). Thankfully, we had access to a shaded area where I was able to get a seat during the Moto2 race. Moto2 motorcycles have 600cc, 4-stroke engines. These racers completed a total of 18 laps.
 
Finally, at 2 pm, the main event, the Moto GP! These motorcycles have a maximum total engine displacement of 1000cc. For the technical details on these motorcycles, check here: http://www.motogp.com/en/MotoGP+Basics/bikes. These bikes were fast, with the fastest lap clocked at 159.7 Km/h. Now all the names and numbers made sense on the spectators hats and jerseys, they were sporting MotoGP racers. #26 Pedrosa and #46 Rossi both had fans in our section. Pedrosa and his teammate Marquez pulled ahead at the beginning of the race. Pedrosa lead for the first half of the race. But, then, Marquez slipped ahead and continued to increase his lead until the end. With Marquez's win, he became the youngest racer to ever win the MotoGP. How old is the youngest racer? Only 20.
 
More info on MotoGP: http://www.motogp.com/en
More info on the venue, Circuite of the Americas: http://cotaexperiences.com/2013-motogp-championship
 

 
 




Saturday, April 20, 2013

East Austin Tour guided by Harrison Eppright

A brief background on historic East Austin African American Cultural Heritage District: after the Civil War, freed slaves, also known as freedmen, established communities around Austin. The oldest freedom town west of the Mississippi is located in Austin and named Clarksville after freed slave Charles Clark who settled there in 1871. However, in 1928, they city of Austin rolled out a Master Plan to move all African American residents to the east side of Austin. The city denied basic services to all African Americans living outside of East Austin in an attempt to force migration to the east side.

Our tour started on 11th Street, just east of Hwy 35 and Franklin BBQ, in the parking lot next to the Texas Music Museum (open weekdays), behind Ebenezer Baptist Church. This area is called Robertson Hill, from the Robertsons who moved into the French Legation in the 1850s. Across the street, closer to Franklin BBQ, is a small yellow house, which will become the visitor center for the African American Cultural & Heritage Facility. The land was purchased by Mr. Dedrick, a freed slave, who built the yellow house still on the property in 1879 or 1880. Ebenezer Baptist Church was started in 1874 by a freed woman singing spirituals from her porch. Originally named 3rd Baptist Church (Colored), it's first building was in stone in 1885, then stucco in 1915 and the imposing gothic brick structure there today was built in the 1950s.

We walk west up 11th street to a small square dedicated to Dr. Charles E. Urdy, a community activitist for the revitalization of East Austin. The square has a beautiful mural by Professor John Yancey.

As we continue up 11th street, we pass the St. Joseph Masonic Lodge. Masonic Lodges were also segregated when this one was built in 1949.

Across from the lodge, we see the Victory Grill, opened on VJ day, Victory over Japan Day, in 1945. Johnny Holmes started the music venue at a time when Austin was still segregated. Victory Grill hosted many African American musicians as a stop on the Chitlin' Circuit, including Ike & Tina Turner. Today, it is only open for special events.
On this tour, we passed several churches, both African American and Mexican American. Interestingly, East Austin was settled by several different communities, from freed slaves to Swedes, Mexicans to Jews. After the 1928 Master Plan, East Austin split at 7th street, with the Mexican American community living south of 7th and the African American community living north of 7th street. Almost all of the churches we passed (African Methodist Episcopal, Our Lady of Guadalupe Catholic, Wesley United Methodist), were originally located in downtown Austin but were subsequently relocated to East Austin.
We continue west on 11th street and pass Hillside Farmacy, now a sandwich shop, originally Hillside Drugs, a drugstore from 1929-1980s.
At Angelina, we turn left (north) and walk to the George Washington Carver Library. Just north of the current library is the original library, now the George Washington Carver Museum. Underneath the brick structure is the wooden frame building that was originally the Central Library (segregated) located downtown. When the new library (whites only) was built downtown, the old building was moved here, bricked over, and became the first branch library in Austin. The Austin Public Library wasn't desegragated until 1951.
We turn left at Hackberry and walk down to San Bernard Street. As the Austin Master Plan in 1928 rolled out, there was also emigration of current residents from East Austin. The nicest houses were on San Bernard Street, which become the place to live among African Americans of means. San Bernard is still a comparitively wide street today. It also boasts the first Austin church designed by an African American architect, John S. Chase.
And so ended our official tour. However, I wanted to check out a few other places that Harrison mentioned. He talked about the Doris Miller Auditorium, a log cabin and the first ever public project housing in the United States, Rosewood Courts. While I didn't make it all the way across Pleasant Valley to Rosewood Courts, the Doris Miller Auditorium was only about a mile away. The Auditorium is named for the navy messman who shot down two Japanese planes during Pearl Harbor (played by Cuba Gooding Jr in the movie Pearl Harbor). The park contains a log cabin built in 1863 by a freedman, Henry Madison and relocated to Rosewood Park during the 1960s.


Harrison Eppright is a certified Austin Tour Guide. He works at the Austin Convention and Visitors Bureau. He leads walking tours of East Austin, the Driskill and downtown. http://austintourguides.org/members/151/harrison-eppright/