Performance insights and tips from a CPU-oriented perspective

  • October 26, 2015

One SPARC Beats Two POWER8 on 3 out 4 SPECrate metrics

Congratulations to the SPARC M7 team for delivery of a monster computer chip incorporating 32 cores, each of which
simultaneously executes 8 independent threads, for a total of 256 CPUs on a single chip.

The chip provides throughput that leaves competitors far behind, as posted today at href="https://blogs.oracle.com/BestPerf/entry/201510_specpu2006_t7_1">blogs.oracle.com/BestPerf, including:

  • 67% more integer throughput than the nearest competitor

  • 76% more floating point throughput than the nearest competitor

The above comparisons are based on best single-chip SPECrate results, as posted at www.spec.org through today, 26-Oct-2015.

Comparison to IBM POWER8

What about POWER8?.... Well, there aren't any 1-chip results at spec.org... now what?

Yes, it is correct that IBM has not submitted results to the SPEC website for systems using only a single POWER8 chip.
Interestingly, though, the newly announced SPARC T7-1 system, using one SPARC M7 chip, outperforms two
IBM POWER8 chips on three out of four top-level metrics:

Compute Throughput

2-chip POWER8 SPECrate results

1-chip SPARC M7
Number of Chips21
Number of Cores2032
Number of CPUs(*)160256
SPECint_rate_base2006 8531120
Best IBM POWER8 2-chip results as published at www.spec.org as of 26-Oct-2015
vs. newly
announced results for SPARC M7.
For more detail, see the full disclosures at www.spec.org and

(The results posted to blogs.oracle.com have been submitted to SPEC, but have not yet been reviewed.)

(*) Depending on context, different terms may be seen:
"hardware threads", "threads",
"virtual processors", "logical processors", "processors", "virtual CPUs", and so forth. From the point of view of the operating
system, there are 256 independently scheduled CPUs available on a single SPARC M7 chip.


Congratulations are due to all who work to deliver stunning throughput, including but not limited to the chip group,
Solaris, Solaris Studio, and in particular to the performance lab rat who puts it all together in a well-documented,
reportable performance result.


More Info

The SPEC CPU benchmarks are derived from the compute intensive portions of real applications. More info is available at www.spec.org/cpu2006. SPECint and SPECfp are SPEC trademarks.

Be the first to comment

Comments ( 0 )
Please enter your name.Please provide a valid email address.Please enter a comment.CAPTCHA challenge response provided was incorrect. Please try again.