Software Tools Will Need Refresh for ORNL's Titan Supercomputer
Posted on Mon, Dec 19, 2011
Eric Gedenk interviews Oak Ridge National Laboratory's Richard Graham on: Application tools critical as programs move toward exascale computing, which includes Allinea DDT.
In this interview Graham discusses the challenges presented by new hybrid computer architectures such as Titan’s. His group’s goal is to make sure that the Oak Ridge Leadership Computing Facility (OLCF) is prepared to offer researchers the most up-to-date and efficient tools possible to make effective use of a new high-performance computing (HPC) environment.
During the interview, Graham talks about how Allinea DDT has changed the way his team debugs: "With one of our partners, Allinea, we’ve really changed the debugging paradigm by scaling up a debugger called Allinea DDT. We’ve been able to basically debug at full scale on Jaguar, even though three years ago people claimed you couldn’t do parallel debugging beyond several hundred to several thousand processes. Now, my group routinely debugs parallel code at over 100,000 processes using Allinea DDT. It’s much more effective than trying to use the old techniques. No other debugger can even come close to Allinea DDT’s performance, so obviously it’s a hit with users."
Read the full interview on HPCWire's website.
Author: Eric Gedenk, OLCF science writer, for HPCwire
Source: HPC Wire, 21 November 2011