Red Hat and NEC Electronics Demonstrate Significant Performance Improvements with GNU C Compiler for NEC's VR5500 MIPS-Based Platform


Red Hat, Inc., (NASDAQ:RHAT), the world's premier open source and Linux provider, and NEC Electronics announced today certified benchmark scores for the Red Hat GNU C compiler for NEC's 400 megahertz (MHz) VR5500Ãâeuro MIPSÃâeuro™-based microprocessor.



The Red Hat engineering team performed a study of the GNU C compiler created for NEC, using a collection of benchmarks provided by the Embedded Microprocessor Benchmark Consortium (EEMBC). These benchmarks represent real-world algorithms used in the telecommunications, networking, consumer, office automation and automotive/industrial businesses. The benchmark tests were then repeated and scores were certified by the EEMBC Certification Laboratories (ECL).

The study identified optimization opportunities for the GNU C compiler for NEC's VR5500 MIPS-based processor. Red Hat worked with NEC to implement the appropriate optimizations. Because the VR5500 processor has dual instruction issue with out-of-order (OOO) execution, compiler scheduling optimizations are not as critical to execution efficiency as other dual issue architectures that do not support OOO execution. This allowed compiler optimizations to focus on areas other than scheduling to improve performance. The benchmarks were then conducted after the compiler work was completed, indicating a significant performance increase versus other commercially available MIPS-based C compilers in the market.

"The results shown by the Red Hat GNU C compiler indicate the performance capabilities and optimizations of the GNU C compiler targeted at a specific processor architecture," said Markus Levy, president of EEMBC. "These results demonstrate the value of the EEMBC benchmarks in identifying areas of compiler performance improvement and achieving results for specific application areas. It is extremely beneficial to developers, as well as customers, to have a highly optimized C compiler for the NEC superscalar, out-of-order processor. We look forward to seeing certified EEMBC benchmark scores for the VR5500 processor from other compiler vendors."

The most significant increase was seen in the automotive industry benchmark. In automotive, the GNU C compiler was approximately 35 percent faster than its nearest competitor. In the remaining benchmarks, the GNU C compiler was approximately 10 percent faster than its nearest competitor. EEMBC published the complete results at the Embedded Systems Conference on March 13 in San Francisco.

"As demand for better-performing compilers continues to grow, our relationship with Red Hat allows us to optimize the GNU C compiler for the NEC VR5500 MIPS-based processor," said Arnold Estep, senior manager for VR SeriesÃâeuro processors at NEC Electronics Inc. "Customers using the Red Hat GNU C compiler with the VR5500 device benefit from an optimized compiler for their product development, allowing them to focus on improving applications and achieving a fast time to market."

"Submitting these leadership results for our compiler confirm the high performance capabilities of GNU C," said Michael Tiemann, chief technical officer at Red Hat. "The beauty of this announcement is that world-class solutions can now be compiled to run on Red Hat Embedded Linux for the NEC MIPS-based processor. These solutions include set-top boxes, gaming platforms, field automation devices, imaging, telematics and other platforms that can be tethered back to a company's infrastructure that is running Red Hat Linux."


Pricing and Availability

For more information on pricing and availability of the GNUPro tool suite, call Red Hat at 1-866-273-3428, extension 45300, or visit

About NEC Electronics

NEC Electronics Inc., headquartered in Santa Clara, Calif., is one of the leading developers, manufacturers and suppliers of semiconductor products in the United States. Committed to meeting customers' cost, performance and time-to-market requirements, the company offers solutions ranging from standard products, including electron components, to system-on-a-chip (SoC) solutions, as well as customized products for next-generation designs. NEC Electronics also offers customers the benefits of a local manufacturing facility in Roseville, Calif., and the global manufacturing capabilities of its parent company, NEC Corporation (NASDAQ: NIPNY). For more information about products offered by NEC Electronics Inc., visit the NEC Electronics website at

About Red Hat, Inc.

Red Hat, the world's leading open source and Linux provider, is headquartered in Raleigh, NC with satellite offices spanning the globe. Red Hat is leading Linux and open source solutions into the mainstream by making high quality, low cost technology accessible. Red Hat provides operating system software along with middleware, applications and management solutions. Red Hat also offers support, training and consulting services to its customers worldwide and through top-tier partnerships. Red Hat's open source strategy offers customers a long term plan for building infrastructures that are based on and leverage open source technologies with focus on security and ease of management. Learn more:

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