Performance Architecture - Workload Characterization, Analysis & Tuning

About SiFive

As the pioneers who introduced RISC-V to the world, SiFive is transforming the future of compute by bringing the limitless potential of RISC-V to the highest performance and most data-intensive applications in the world. SiFive’s unrivaled compute platforms have enabled leading technology companies around the world to innovate, optimize, and deliver the most advanced solutions of tomorrow across every market segment of chip design, including artificial intelligence, machine learning, automotive, datacenter, mobile, and consumer. With SiFive, the future of RISC-V has no limits.

This Performance Architect will be responsible for the workload characterization of applications running on RISC-V cores. They will need to have understand of computer architecture, micro-architecture as well as System software, benchmark software and profiling and monitoring tools. Hands-on Lab skills is a plus. Knowledge of competitive system such as ARM and APPLE will round out the candidate.


  • Using performance architecture skills, the successful candidate will perform competitive HW/SW analysis and optimize workloads to obtain high performance for the SiFive RISC-V microarchitecture, and build tools & flows to efficiently automate these activities.


  • CPU Performance benchmarking using silicon, RTL simulators or performance models
  • Workload performance analysis in the areas of optimal source code, efficient compilation and bottleneck analysis
  • Desirable: Workload characterization and workload reduction techniques for performance simulation
  • Desirable: FPGA or ASIC synthesis, place and route, develop strategies and constraints to enable near complete utilization of available FPGA resources.
  • Desirable: FPGA debug, including use of Integrated Logic Analyzer for waveform capture and debug


  • Ability to build Linux, root file systems and modify boot code ( cross and native compile experience)
  • Deploying bare metal workloads on silicon boards for the purpose of performance measurement and board tuning
  • Knowledge of SPEC, SPECrate, EEMBC, MLPerf, other standard benchmarks, and/or vector benchmarks
  • Desired: SimPoint analysis, workload characterization, and workload reduction through BBV and statistical analysis
  • Desired: Python and TCL scripting for workflow automation


  • Familiar with git or other source code control system
  • Strong background with Linux-based development environments including python/shell programming


SiFive is proud to be an equal employment opportunity workplace. We offer a competitive compensation package that includes flexible paid time off; flexible work environment; health, vision and dental benefits; 401(k) plan; employee stock option program, and much more.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.
If you yearn to be challenged and wish to work in an environment where the boundaries of your creativity and skills will be tested, then SiFive is the place for you!
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Thank you for your interest in SiFive Inc. Please note that SiFive does not accept unsolicited resumes from external agencies unless contracted to fill a specific position. Agencies are hereby specifically directed NOT to contact SiFive employees directly in an attempt to present candidates – all applications must go through SiFive's internal recruiting team. Any third-party resume forwarded by agencies/external recruiters to a SiFive mailing address, fax machine or email address, directly to SiFive employees, or to SiFive's resume database will be considered property of SiFive Inc and treated as a direct application. This exchange does not constitute an agreement between SiFive and the agency/external recruiter. SiFive reserves the right to contact the candidate directly. Employment agencies/external recruiters will receive no compensation from SiFive or its companies.