Nvidia updates programming tools to boost mobile device speed

Version 5.5 of the CUDA tools for the first time support ARM CPUs, which are broadly used in smartphones and tablets

By , IDG News Service |  Hardware

Nvidia wants to accelerate mobile-device performance with underlying tools that enable CPUs and graphics processors to work in a coherent manner.

The company released on Tuesday its CUDA 5.5 programming tools, which will for the first time support ARM CPUs used in most smartphones and tablets. The tools could bring the type of performance gains that have helped supercomputers surpass petaflops in performance. But with mobile devices, the performance boosts will fit within a specific power limit.

Many tablets and smartphones already come with Nvidia's Tegra chips, which offer a strong gaming experience.

Developers use CUDA parallel programming tools to write and manage applications that harness the combined processing power of GPUs, CPUs and other processors.

The CUDA-related performance boosts will be especially felt in image processing, said Ian Buck, general manager for GPU computing at Nvidia. Smartphones with cameras could see improved image processing and recognition, and CUDA could open the door for more feature-rich smartphones.

"This is a progression where we started GPU computing on the desktop, and now it's coming to Tegra," Buck said. "This is the first time we are bringing CUDA to the mobile market."

Nvidia already offers graphics processors in mobile chips that are considered the best, and the company is consistently improving the capabilities. Graphics processing will be faster and more power-efficient through CUDA tools, said Buck, who also invented CUDA.

Supercomputers have been moving to graphics processors and other accelerators as a way to boost performance. Nvidia's graphics processors are used in the world's second fastest computer called Titan, which is at the U.S. Department of Energy's Oak Ridge National Laboratory. The supercomputer achieves a peak performance of 17.59 petaflops per second with 299,008 Opteron CPUs and 261,632 Nvidia Tesla K20X GPU cores.

An upcoming mobile Tegra chip code-named Logan, due next year, will be the first to support CUDA 5.5. Logan's CUDA support will come through an integrated graphics processor based on the Kepler architecture, which is in the Titan supercomputer today. The current Tegra chips have GeForce graphics cores and are not optimized for CUDA.

While the CUDA-compatible mobile chips aren't ready, Nvidia is providing mobile developers an early snapshot of the benefits of CUDA 5.5 through a prototype board, Buck said. Nvidia has introduced hardware for developers that connects Tegra 3 chips with a CUDA-compatible GPU called Kayla through a PCI-Express slot. The hardware, which was introduced earlier this year at Nvidia's GPU Technology Conference, was also being shown at the International Supercomputing Conference this week in Leipzig.

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