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Memory leaks are a killer of long running applications - memory usage keeps growing until finally the memory supply is exhausted and it's "game over". If you’re lucky the system recognizes your application is at fault and terminates it. If you’re unlucky…

Today, using one of the early examples from the CUDA toolkit, I’m going to introduce a neat feature of CUDA 5 and CUDA 5.5 - dynamic parallelism - and how to use Arm DDT to debug it.

What is CUDA?

CUDA brings highly parallel computing into the graphics…

We humans can survive in almost every environment on our planet and are beginning to step off it. We command fire hotter than the core of a star and freeze atoms at temperatures cooler than the depths of interstellar space. Not bad for squishy sacks of…

It's January 2012 and I'm sitting on a cross-Atlantic flight. Sweat is beading on my brow and it's nothing to do with the cabin temperature. I am not a happy bunny. I'm a very unhappy bunny and somebody is going to pay.

On this fateful…

One of the great things about working at Arm is meeting developers with real problems and improving their lives. When you have a tool that transforms the daily report to the boss from “still fixing that bug” to “developing new code” - you’ve just made…

Advanced Memory Debugger and Memory Leak tool for Linux C++, C and F90

The memory debugger in Arm DDT assists in fixing a number of common memory usage errors with C, C++ and Fortran codes on Linux. The mode extends massively beyond what can be observed…

Debugging and Optimizing CUDA and OpenACC

Arm Forge is a development tool suite for developing, debugging and optimizing CUDA and OpenACC codes - from GeForce to Tesla and the Kepler K80. Forge includes the parallel and multi-process CUDA debugger, Arm…

It’s with great excitement that we’re announcing that Allinea is now a part of Arm.

For over 10 years at Allinea we’ve been on an incredible journey to be your cross-platform tools provider for high performance computing (HPC).

It’s…

I’ve always enjoyed playing games, but the buzz from writing programs that play games has repeatedly claimed months of my conscious thought at a time. I’m not sure that writing programs that write programs that play games is the perfect solution, but…

Arm DDT and Arm MAP are excellent tools for finding program flaws and performance issues – they are also very helpful for studying codes and coding techniques. In this article I present a handful of optimization techniques and use Arm MAP to illustrate…

For Fortran and F90 debugging is - like all languages - inevitable. We look at debugging tips for Fortran and F90 developers to show why and how to use a debugger for some typical bugs.

Do it the right way, not the write way

The F90 and Fortran write…

Python is pretty commonplace in scientific computing these days. It is easy to code and powerful - but numerical computation is not a strength that Python has. Its interpreter simply can’t apply the advanced optimizations to your loops and floating point…

What are dangling pointers?

Dangling pointers are pointers whose memory has been freed but which have not been set to null (or 0x0). This allows a particularly tricky class of bug to arise, because it is often possible for subsequent code to keep on using…