Sunday, 25 January 2015

Results

In computer science, some data points can be very expensive to calculate, so compiling a sufficient array of data for analysis can take a very long time. In the past week I have been collecting many different kinds of data for this reason.

Monday, 19 January 2015

Mess up on Stampede

In bash, you can run commands in parallel by terminating them with an "&", rather than a ";". I thought that running commands in parallel on Stampede would help them finish quicker, since I had a job limit of one. However, by doing this I inadvertently submitted the parallel commands to my user nodes, rather than the job nodes, which is against Stampede user policy. So, after having my account terminated for improper conduct, I contacted TACC and they reactivated my account. Since, I've only had the chance to do basic simulations on the new system.

Wednesday, 14 January 2015

Move to different servers

I moved from Lonestar, an old TACC server cluster kept for posterity, to Stampede, the 7th most powerful computer in the world. The server comprises 6400 nodes, 102400 cpu cores, 205 TB total memory, 14 PB total and 1.6 PB local storage. Since, I've been migrating simulators and getting used to the new system of queueing jobs.