Benchmark Information
Competitive and PGI SPEC® OMPG2012 results listed below were conducted by The Portland Group on the dates listed. Competitor results were conducted using what The Portland Group believed to be the best known optimization options at the time the results were conducted.
SPEC benchmarks include two fundamental metrics. "Base" performance requires the use of a uniform set of compiler options and runtime settings across all benchmarks in the suite. "Peak" performance allows use of arbitrary combinations of compiler options, runtime settings and profile-feedback optimization to maximize performance of individual benchmarks in the suite. The Portland Group believes Base is most representative of "compile-and-go" performance, and it is for this reason that the comparisons on these pages list 64-bit Base performance only.
The Portland Group uses OMPG2012 primarily to compare compiler performance over time. PGI does not perform direct comparative system peformance testing. To minimize performance fluctuations due to hardware variations, PGI retains a limited set of reference systems whose configurations are fixed and stable. As a general rule, reference systems are not modified or upgraded; instead new systems are added and old systems are retired from the reference system pool as needed. The results posted on this web site are organized by individual reference systems.
PGI Reference System: "Galaxy" (16-core Intel Xeon)
| Date | Compiler | SPECompG_base2012 | Notes |
|---|---|---|---|
| Jan-2013 | PGI 13.1 | 3.73 | One thread per core |
| Jan-2013 | Intel 13.0 | 3.80 | One thread per core |
| Jan-2013 | GCC 4.7 | 2.10 | Estimates* |
System Information:
HP ProLiant SL250 with two Intel Xeon E5-2670 at 2.6GHz processors. The system has two eight-core chips and 64GB of memory (8x8 GB 2Rx4 PC3-8500R ECC CL5). Operating System: RHEL 6.2 (64-bit) kernel version 2.6.32-220.e16.x86_64.PGI Reference System: "Piledriver" (32-core AMD Opteron)
| Date | Compiler | SPECompG_base2012 | Notes |
|---|---|---|---|
| Mar-2013 | PGI 13.2 | 4.24 | BIOS Performance defaults loaded |
| Jan-2013 | PGI 13.1 | 3.52 | |
| Jan-2013 | Intel 13.0 | 3.17 | |
| Jan-2013 | GCC 4.7 | 2.32 | Estimates* |
System Information:
Supermicro A+ Server model 2022G-URF with AMD Opteron 6386 SE at 2.8GHz processors. The system has two 16-core chips and 64GB of memory (8x8 GB 2Rx4 PC3L-12800R-11 ECC). Operating System: RHEL 6.2 (64-bit) kernel version 2.6.32-220.e16.x86_64.* Notes: GCC 4.7 was unable to compile and run all test. For calculation purposes, PGI results were substituted for the failing tests. Thererfore the results shown for GCC are estimates only.
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