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The SPARC64 VI microprocessor, designed by Fujitsu
Fujitsu

is a Japanese company specializing in semiconductors, air conditioners, computers , telecommunications, and Service , and is headquartered in Minato, Tokyo, Tokyo....
, is a SPARC V9-compliant processors. It is used by Sun Microsystems
Sun Microsystems

Sun Microsystems, Inc. is a multinational corporation vendor of computers, computer components, computer software, and information technology services, founded on February 24, 1982....
 and Fujitsu in their SPARC Enterprise
SPARC Enterprise

The SPARC Enterprise series is a range of UNIX server computers co-developed by Sun Microsystems and Fujitsu introduced in 2007. They are marketed and sold by Sun Microsystems, Fujitsu, and Fujitsu Siemens Computers under the common brand of SPARC Enterprise, superseding Sun's Sun Fire and Fujitsu's PRIMEPOWER server product lines....
 M-class servers.

The microprocessor has two cores. Each core is a modified SPARC64 V microprocessor. The process shrink enabled both cores and a secondary cache to be contained on a die.

SPARC64 VI core features out-of-order execution
Out-of-order execution

In computer engineering, out-of-order execution, OoOE, is a paradigm used in most high-performance microprocessors to make use of Instruction cycle that would otherwise be wasted by a certain type of costly delay....
 pipelines.






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The SPARC64 VI microprocessor, designed by Fujitsu
Fujitsu

is a Japanese company specializing in semiconductors, air conditioners, computers , telecommunications, and Service , and is headquartered in Minato, Tokyo, Tokyo....
, is a SPARC V9-compliant processors. It is used by Sun Microsystems
Sun Microsystems

Sun Microsystems, Inc. is a multinational corporation vendor of computers, computer components, computer software, and information technology services, founded on February 24, 1982....
 and Fujitsu in their SPARC Enterprise
SPARC Enterprise

The SPARC Enterprise series is a range of UNIX server computers co-developed by Sun Microsystems and Fujitsu introduced in 2007. They are marketed and sold by Sun Microsystems, Fujitsu, and Fujitsu Siemens Computers under the common brand of SPARC Enterprise, superseding Sun's Sun Fire and Fujitsu's PRIMEPOWER server product lines....
 M-class servers.

The microprocessor has two cores. Each core is a modified SPARC64 V microprocessor. The process shrink enabled both cores and a secondary cache to be contained on a die.

Processor core

The SPARC64 VI core features out-of-order execution
Out-of-order execution

In computer engineering, out-of-order execution, OoOE, is a paradigm used in most high-performance microprocessors to make use of Instruction cycle that would otherwise be wasted by a certain type of costly delay....
 pipelines. Further, SPARC64 VI is socket compatible with its successor, the SPARC64 VII processor. Existing M-class servers are able to upgrade to the SPARC64 VII processors in the field.

Vertical multithreading


The SPARC64 VI implements multithreading using two techniques, chip multiprocessing (CMP) and vertical multithreading (VMT). The two cores both execute one thread each simultaneously, implementing CMP. Each core executes two threads, but only one of the two concurrent threads is executed at any given time. Which thread is executed is determined by time sharing or if the thread is executing a long latency operation, prompting the pipeline switches to another thread.

See also

  • SPARC64 VII
  • SPARC Enterprise
    SPARC Enterprise

    The SPARC Enterprise series is a range of UNIX server computers co-developed by Sun Microsystems and Fujitsu introduced in 2007. They are marketed and sold by Sun Microsystems, Fujitsu, and Fujitsu Siemens Computers under the common brand of SPARC Enterprise, superseding Sun's Sun Fire and Fujitsu's PRIMEPOWER server product lines....


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