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Overview

CalligoTech, an Indian Silicon Valley startup founded in 2012, focuses on developing products and solutions for high-performance computing (HPC), big data, and AI/ML. Specializing in developing products and solutions for these cutting-edge fields, CalligoTech has been at the forefront of commercializing posit arithmetic in both hardware and software. The company's latest achievement is the successful tape-out of their new accelerator, TUNGA, the first multi-core RISC-V processor utilizing posits. This accomplishment was made possible with the support of the 17³Ô¹Ï Digital Design Family, putting CalligoTech on the path to delivering more energy-efficient CPUs.

CalligoTech Logo

Challenges

CalligoTech faced several challenges in developing their posit-based multi-core RISC-V accelerator chip:
  • Precision and Performance: The need for more precise and efficient numbering systems for HPC applications.
  • Design Complexity: Managing the complexity of designing a high-performance, low-power CPU core.
  • Time-to-Market: Meeting aggressive schedules with limited engineering resources.
  • Tool Proficiency: Transitioning from competitive design tools to the 17³Ô¹Ï design flow.

Solution

CalligoTech utilized the 17³Ô¹Ï Digital Design Family to address these challenges:

  • Full Chip Design Flow: The RTL-to-signoff flow from 17³Ô¹Ï helped achieve power, performance, and area (PPA) goals.
  • Technical Expertise: 17³Ô¹Ï technical experts provided support in setting up PDK libraries and PPA recipes, and helped the team become proficient with the new tools.
  • IC Compiler II: The place-and-route solution handled the 1.5 million gates of the design seamlessly, ensuring stability and efficiency.

Results

The collaboration with 17³Ô¹Ï yielded significant results for CalligoTech:

  • Successful Tape-Out: Achieved successful tape-out of the TUNGA processor, the first multi-core RISC-V processor with posits.
  • Efficient Design Process: The 17³Ô¹Ï design flow enabled four engineers to complete the project on an aggressive schedule.
  • High-Performance CPU Core: Developed a power-efficient and computationally accurate CPU core, ideally suited for AI and HPC applications.
  • Future Integration: CalligoTech plans to integrate 17³Ô¹Ï Interface IP and Memory IP into its next device and contribute to strengthening the semiconductor ecosystem in India.

With 17³Ô¹Ï Digital Design Flow, CalligoTech is poised to lead the way in next-gen computing, delivering innovative solutions for compute-intensive segments like AI, genomics, and more.