[Patch] Linpack-pc broken as a performance benchmark

[Arnold Schwaighofer]

On Oct 30, 2013, at 4:13 PM, Hal Finkel <hfinkel at anl.gov> wrote:

> ----- Original Message -----
>> Hi all,
>> 
>> SingleSource/Benchmark/Linpack is broken as a performance benchmark.
>> It uses the time to execute a set of functions to determine the time
>> to run another set of functions.
>> 
>> The attached patch fixes this by setting “ntimes” to arbitrary 10000.
>> The benchmark then runs in about 30 secs on a recent mac.
> 
> 30 seconds sounds good to me. However, some of the embedded folks may complain ;) -- We should probably have it depend on whether SMALL_PROBLEM_SIZE is in effect or not. (You can add a preprocessor define in the makefile when SMALL_PROBLEM_SIZE is defined, and let that set it to be a factor of 10 smaller).

Sure,

most benchmarks I have seen seem to simply put a “#ifdef SMALL_PROBLEM_SIZE” in the c source it self. So I did that.

 
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