Feeds

ARM unveils multi-core chip design

License now, punch out silicon in Q2 2005

  • alert
  • submit to reddit

Choosing a cloud hosting partner with confidence

ARM yesterday announced that it is ready to sign licensees for its first multi-core processor, but it admitted it will be a year before silicon derived from the technology begins to appear.

The multi-core design, dubbed the MPCore, was co-developed with NEC to support single-core to four-core processors. Based on the ARMv6 architecture, each core also integrates more recent technology, including ARM's AltiVec/3DNow/SSE-style 'single instruction, multiple data' (SIMD) multimedia processing extensions and the company's Jazelle Java acceleration circuitry.

Pitched at mobile applications, MPCore features a power controller that can shutdown unused cores, taking the consumption down to 0.57mW/MHz for a 130nm CPU. That figures excludes power consumed by the chip's L2 caches, which maintain coherency using a "modified" version of the MESI (Modified, Exclusive, Shared, Invalid) protocol, ARM added.

The MPCore Energy Manager can reduced power consumption by up to 85 per cent, ARM said. It didn't say from what baseline that reduction is measured - presumably from four separate ARM CPUs.

The design supports both symmetric and asymmetric multi-processing, said ARM, with both techniques backed by a variety of operating systems. ARM has begun offering a Linux 2.6-based development system.

In addition to developing the MPCore, NEC said it will use the part in hardware products of its own that target the consumer electronics, automotive and mobile markets. ®

Related stories

AMD restates dual-core CPU scheme
Intel's Whitefield goes Banias in 2006
Intel plots 4MB L2, 64-bit desktop CPU
First 65nm IBM PowerPC chip to be dual-core
First dual-core Itanic to sport 24MB of cache

Internet Security Threat Report 2014

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
New hybrid storage solutions
Tackling data challenges through emerging hybrid storage solutions that enable optimum database performance whilst managing costs and increasingly large data stores.
Protecting users from Firesheep and other Sidejacking attacks with SSL
Discussing the vulnerabilities inherent in Wi-Fi networks, and how using TLS/SSL for your entire site will assure security.