SPARC T4

Some news on T4 hotcip@23. more

image

Inside T4

  • SPARC T4 is an eight-core processor @3Ghz+
  • 40nm by TSMC
  • uses a brand-new core called the S3, which runs at much higher clock rate frequency than the previous SPARC T-Series processors
  • The SPARC T4 is up to 5 times faster than the SPARC T3 for single-threaded functions
  • ship the next-generation SPARC T4 system in the first half of FY2012 , late 2011
  • “what we are calling ‘critical thread API,’ or the ability of the operating system to recognize critical threads in our Oracle applications and assign them all by themselves to a single core
  • increase the thread performance and throughput
  • critical thread API: allows a high priority apps to grab one thread on a core and hog all the resource on the core to boost performance of that single thread; the other 7 threads on the core get told to sit tight
  • now designing the new 16-core SPARC T5 processor.
  • Beta Tesing T4
  • S3 core
  • image
    • 16KB L1 I$ , 16KB L1D$ , 128KB L2$
    • dual issues, 16-stage integer pipeline
    • A pause Inst
    • a fused compare-branch Inst
    • support OO execution
    • 5x SPECTint2006 of S2/T3 core
    • 11-cycle floating point pipeline 7X SPECfp2006 of S2/T3
    • 8 threads on S3 core can be dynamically added or substracted, depending in the pre-thread performance level demanded by apps
    • crypto unit: support AES, DES, kasumi, Camellia, CRC32c encryption in-pipe with a 3 cycle internal latency
    • MD5, SHA-1, SHA-256, SHA-512, MPMUL, MONTMUL, MONTSQR out-of-pipe with longer latency
    • 1.5x to 3.5x vs crypto unit in S2/T3

T4 chip

image

    • 4MB L3, shard by 8 cores
    • 8 banks with 16-way association across the cache
    • two dual channel DDR3 memory controllers support 1.07Ghz memory
    • two PCI-E2  x8 controllers
    • two 10 ge interfaces on chip

Performance

image

per this link the core multipler for T4 is .5

 

About laotsao 老曹

HopBit GridComputing LLC Rockscluster Gridengine Solaris Zone, Solaris Cluster, OVM SPARC/Ldom Exadata, SPARC SuperCluster
This entry was posted in oracle, Solaris, SPARC, xvm-V12N. Bookmark the permalink.

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