[PATCH] [LNT] Add geometric mean to run report

[Hal Finkel]

----- Original Message -----
> From: "Yi Kong" <kongy.dev at gmail.com>
> To: "Chris Matthews" <chris.matthews at apple.com>, "Anton Korobeynikov" <anton at korobeynikov.info>
> Cc: llvm-commits at cs.uiuc.edu
> Sent: Friday, May 16, 2014 12:08:54 PM
> Subject: [PATCH] [LNT] Add geometric mean to run report
> 
> Hi all,
> 
> This patch implements geometric mean in run report.

You mean that this is for all tests in the entire test suite aggregated into a single number?

> 
> The idea of geomean is to represent the entire data set and not to
> get
> skewed by long running tests. However the major problem with it is,
> zero time is not allowed. I used a workaround by adding 1 to each
> value and subtract 1 from the final geomean result.  The workaround
> certainly break the geomean number, but we don't really care the
> number itself, rather the change of it. It's certainly not the ideal.
> Is there any better solution or statistics we can use?

I don't understand this at all. Is the geometric mean not (mul_i^n a_i)^(1/n)?

Thanks again,
Hal

> 
> Thanks,
> Yi Kong
> 
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-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory