SPEC CPU2006 v1.2
SPEC CPU2006v1.2 measures compute intensive performance across the system using realistic benchmarks to rate real performance.
In our testing with SPEC CPU2006, we use the basic commands to run these tests.
Runspec –tune-base –config=tweaktown.cfg then int or fp
To do multi-threaded, we add in –rate=48 or –rate=64
When SPEC CPU first came out, these tests could take up to a week to run, but thanks to increases in performance, our tests only take up to four days for a full run now and even less on some systems.
The user can do many things to affect the results of CPU2006 runs, such as compiler optimizations, add-ons like Smartheap, and different commands used to start the tests.
This benchmark has many different commands to use depending on what the user is looking for. For our tests, we used basic commands that run a full test with a base tune.
You can see here the SPEC scores after full runs for Integer (int) and Floating Point (fp) tests.
Single-core runs show how fast (speed) a CPU can perform a given task. In the multi-core runs, we set SPEC CPU2006v1.2 to use all threads to measure the throughput of the system.
The additional cores/threads of this system have a huge impact on performance in these tests and really shows the amount of horsepower that a dual-socket system has over a single-socket board.
Single-threaded results are still very important, but when you need many single-threaded apps to run, moving to a dual-socket setup is the way to go.
Just like in the other tests, we see a similar pattern. The 6338P is faster in single-threaded runs, and the 6370P is faster in multi-threaded runs.
Looking at the results of single-threaded integer runs, we can get an idea of the speeds at which the AMD Opteron 6338P and 6370P can crunch through the different integer tests. Not all CPUs are equal here, and ones that have a higher speed will perform these tests faster. Naturally, using an overclocked system or CPUs with a higher stock speed will generate higher results.
Now we run the test using all 48 cores of the quad 6338Ps and all 64 cores of the quad 6370Ps to measure the throughput of the system. In this test, more cores/threads will have a greater effect on the outcome.
Just like the integer tests, we now run the floating-point tests in single-threaded (speed) mode.
Here we see the results of the multi-core floating-point run that uses all 48 cores of the 6338Ps and all 64 cores of the 6370Ps. Like the multi-threaded integer test, more cores/threads will have a greater impact on the test.
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