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Lenovo ThinkServer RD640 Server Review

By: William Harmon | Servers in IT/Datacenter | Posted: Sep 23, 2014 1:10 pm
TweakTown Rating: 95%Manufacturer: Lenovo

UnixBench

 

UnixBench has been around for a long time now, and is a good general-purpose bench to test on Linux based systems. This is a system benchmark, and it shows the performance of single-threaded and multi-threaded tasks.

 

lenovo_thinkserver_rd640_server_review_51

 

This shows the system indexes after a complete UnixBench run. Here we get an idea of how much performance gain we get using multi-threaded applications. However, many applications use single- threaded, so this number is really the base, and a higher clock speed will increase both indexes.

 

Now we are seeing that the E5-2690 v2s in the RD640 come very close to other systems we have tested. This is starting to look very good for the RD640.

 

 

SPEC CPU2006v1.2

 

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 following basic commands to run these tests:

 

Runspec -tune=base --config=tweaktown.cfg, then int, or fp

To do multi-threaded, we add in --rate=40 on the RD640.

 

When SPEC CPU first came out, these tests could take up to a week to run, but as computers become faster, our tests now take up to four days for a full run. The user can do many thing to effect the results of CPU2006 runs, such as compiler optimizations, add-ons like Smartheap, and different commands used in to start the tests.

 

lenovo_thinkserver_rd640_server_review_52

 

Here you can see 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, and this is a measure of the throughput of the system.

 

The additional core/threads of this system have a huge impact on performance in these tests, and really show 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 lots of those to run, moving to a dual socket setup is the way to go.

 

lenovo_thinkserver_rd640_server_review_53

 

Looking at the results of single-threaded integer runs, we can get an idea of the speed at which the Intel Xeon E5-2690 v2s 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. In this case, this is the stock speed of the Intel Xeon E5-2690 v2s. Naturally, using an overclocked system, or CPUs with a higher stock speed, will generate higher results.

 

lenovo_thinkserver_rd640_server_review_54

 

Now we run the test using all 40 threads of the Dual Intel Xeon E5-2690 v2s, to measure the throughput of the system. In this test, more cores/threads will have a greater effect on the outcome.

 

We can see a big difference here using the dual socket setup over single socket systems, with a three to four times performance boost in many cases.

 

lenovo_thinkserver_rd640_server_review_55

 

Just like the integer tests, we now run the floating-point tests in single (speed) mode. The lower clock speeds of the Intel Xeon E5-2670's also hold this bench back. We do see a strong advantage with using Ivy Bridge-EP E5-2690 v2s in this test.

 

lenovo_thinkserver_rd640_server_review_56

 

Here we see the results of the multi-threaded floating-point run that uses all 40 threads of the Dual Intel Xeon E5-2690 v2s. Like the multi-threaded integer test, more cores/threads will have a greater impact on the test.

 

Just the single-threaded FP runs, we see a strong advantage using Ivy Bridge-EP E5-2690 v2s in this test.

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