Sierra Forest
General information
Launching2024
Marketed byIntel
Designed byIntel
Common manufacturer(s)
Cache
L1 cache96 KB per core:
  • 64 KB instructions
  • 32 KB data
L3 cache3 MB per module
Architecture and classification
Technology nodeIntel 3
MicroarchitectureCrestmont
Instruction setx86-64
Extensions
Physical specifications
Cores
  • Up to 288
Socket(s)
Products, models, variants
Product code name(s)
  • SRF
Brand name(s)
History
Successor(s)Clearwater Forest

Sierra Forest is a codename for Intel's first generation E-core based Xeon server processors.[1][2][3] It is fabricated using Intel's Intel 3 process and compatible with the LGA 7529 socket.[4][5][6]

Sierra Forest will be used as part of the Birch Stream server platform in 2024.[7]

History

Sierra Forest was first announced during Intel's Investor Meeting on February 17, 2022. The roadmap presented showed upcoming Xeon processors being split into separate tracks for those with only P-cores and those with only E-cores.

On March 29, 2023, Intel confirmed that Sierra Forest chips were powered on and running an OS. Intel also displayed a chip running 144 cores, and announced a release timeline for H1 2024.[8]

On September 19, 2023, Intel announced a 288-core variant of Sierra Forest and confirmed the release timeline of H1 2024.[9]

Architecture

Sierra Forest will use only E-cores to achieve higher core counts in order to compete with AMD's Epyc server processors codenamed Bergamo which features up to 128 smaller Zen 4c cores.[10] AMD's Zen 4c cores feature simultaneous multithreading (SMT) while the Crestmont E-cores featured in Sierra Forest processors can only support one thread for each core. The purpose of the Sierra Forest architecture design is to achieve ultra-high core counts for greater compute density that would benefit cloud and HPC server applications.[11] Cloud service providers may not be as interested in HPC accelerators and instead prioritize greater ECU/vCPU integer and floating-point performance.[5] Don Soltis is the principal engineer and chief architect for Xeon E-Core.[12]

See also

References

  1. ↑ "Intel confirms 15th Gen Core "Arrow Lake", Xeon "Granite Rapids" and "Sierra Forest" 2024 series". VideoCardz. February 17, 2022. Retrieved November 23, 2022.
  2. ↑ Cutress, Ian (February 17, 2022). "Intel Discloses Multi-Generation Xeon Scalable Roadmap: New E-Core Only Xeons in 2024". AnandTech. Retrieved November 23, 2022.
  3. ↑ Mujtaba, Hassan (February 17, 2022). "Intel Client & Server CPU Roadmap Updates: Meteor Lake In 2023, 20A & 18A Powered Xeons & Core Chips Beyond 2024". Wccftech. Retrieved November 23, 2022.
  4. ↑ Alcorn, Paul (February 18, 2022). "Intel Unveils New Xeon Roadmap, E-Cores Coming to the Data Center". Tom's Hardware. Retrieved November 23, 2022.
  5. 1 2 Kennedy, Patrick (February 17, 2022). "Intel Sierra Forest the E-Core Xeon Intel Needs". ServeTheHome. Retrieved November 23, 2022.
  6. ↑ Mujtaba, Hassan (January 31, 2023). "Intel's Massive LGA 7529 Socket For Sierra Forest "Birch Stream" CPUs Pictured". Wccftech. Retrieved February 12, 2023.
  7. ↑ Kostovic, Aleksandar (July 9, 2021). "Intel Birch Stream-AP Platform for Sierra Forest CPUs Listed With LGA 7529 Socket". Tom's Hardware. Retrieved November 23, 2022.
  8. ↑ Kennedy, Patrick (March 29, 2023). "Intel DCAI 2023 Update New Technology and Updated Xeon Roadmap". ServeTheHome. Retrieved March 30, 2023.
  9. ↑ Kennedy, Patrick (September 19, 2023). "Intel Announces 288 E-Core Sierra Forest Variant at Innovation 2023". ServetheHome. Retrieved September 19, 2023.
  10. ↑ Larabel, Michael (October 14, 2022). "Intel Sends Out Meteor Lake & Sierra Forest Patches For The GCC Compiler". Phoronix. Retrieved November 23, 2022.
  11. ↑ Mujtaba, Hassan (January 21, 2023). "Intel Xeon CPU Rumors: Sierra Forest In 2024 Aiming For 334+ Cores, Granite Rapids-SP Up To 132, Granite Rapids-WS Up To 86 Cores". Wccftech. Retrieved February 10, 2023.
  12. ↑ "Tackling Throughput Computing with Sierra Forest". Intel Corporation.


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